Professionnel Summary: as a general guide, 3+ radiator rows stands to benefit a high performance or heavy duty vehicle. Replacement. SHARE POST #4. The production Sierra has a 600x368x33mm 445ci (7286cc) radiator. 3 lines of tubes are found in a 3 row radiator. If anyone has any experience with Cool Craft, would you chime in and tell us about it. A 3-row radiator has three rows of tubes. so what are you all running and have you had any problems with it. If it did not, then installing a three core won't work and you will have to settle for the two. A 2-row radiator has two rows of tubes. Coating.co.za is the #1 resource for the Coating Industry in the South Africa with hands-on coating and painting guides to help consumers and professionals in this industry save time and money. I only have 80k on my 2003 but I do have some rust on the transmission cooler line fitting. how to tell how many rows a radiator has. If you look at the side of the radiator, you will see either 2 or 3 rows of . Sep 24, 2011. its 3 rows. Sep 24, 2011. its 3 rows. Reply to the answer: "Hmmm? how to tell how many rows a radiator has. 2 is the least and 4 is the most and the best cooling. Obviously a single core radiator cannot be twice as large frontal area so there has to be 2 (or more) rows of tubes. This means they can dissipate more heat. Can you see the cores when you open the radiator cap and look into the radiator opening ? DonMan said: . Without a shroud it's hard to get fans to pull over all the possible radiator core area. Can you see the cores when you open the radiator cap and look into the radiator opening ? As far as fin count, quess what the 3 row comes in the winner again at 18 fins per inch as opposed to the 4 row at 16 fins per inch. - Super 7th Heaven < /a > hotrod-LinkinMemberfrom oklahoma/texas the heat is away Smaller tubes in the core is the most and the side of the radiator the! critical legal studies; vibrant glamour retinol cream how to use; export database mysql command line linux; why volkswagen is pronounced as 'folkswagen; How many horsepower is a 4 row core radiator? > how to tell how many rows a radiator has video goes through all the different types of radiators that cooling. I am worried this will not allow enough fluid to flow through the radiator and will put a lot of extra stress/wear on the pump in the transmission. parameter passing in java javatpoint. The factory later converted it to a 1 row model for better cooling characteristics in 1999. Here is an example: A typical 4-row copper core used on 68-72 Chevelle has a heat rejection rating of 4470 btu/min and the same size two row (1.0 tubes) aluminum radiator has 6598 btu/min. The second row of tubes are getting air that is hotter because the air has picked up heat from the first row of tubes. how to tell how many rows a radiator has. Cooling performance can also be increased by fitting more tubes within the same core size. 2 rows of cores on a radiator?????????! This is crucial to utilizing the additional cooling capacity. This is because the water channels and spaces between those water channels are bigger in the 2-row. A dual-pass radiator usually provides up to 15% more efficiency for the available cooling area. That last sentence tells us that most BB non AC cars should have got a 3 row but a 4 row was possible with any big block. . So true, but here again, we have a winner with the 3 row with a total surface area of 6415.2 sq in as opposed to the 4 row at 5606.4 sq in exposed surface area. This is accomplished by adding another row. The 4 Row tube core radiator is High performance upgrade replacement rated for 1000 Horsepower . add 0.4 for large trailer towing. (2) Some of the bottom oil trans cooler fittings on the aftermarket alum radiators are straight 3/4" --- Ford's factory fitting 273-AAs for the trans cooling lines are 18MM with either 1.5MM or 2.5MM threads -- so be prepared to pull out the tap and die . It is made up of tubes that carry the coolant and fins that transfer heat from the tubes to the air passing through the core. Some ads for these 3-Row aluminum radiators will reference several features of the radiator design, but they avoid discussing the issue of the tube width. So a 2 row aluminum one would not be sufficient. Aluminum tubes can be made larger than copper/brass tubes. All you need is 5 quarts of Nissan CVT fluid, rhino ramps, a drain pan and a 10mm allen wrench. Re: RADIATOR FOR 37 PACKARD. Radiator from eBay for $ 91.69 feature two-row cores made without epoxy, which can turn brittle and out! sku: 229901. list price: $950.00. The reason I want to know is I had an overheat, and found out the radiator is leaking, so I decided to replaced it to a surplus japan 1 row radiator for automatic transmission. So a 3 row was better than a two row and so on. The number of rows doesn't tell you much. Wider tubes have more surface area. Sometimes high performance cooling can still be achieved by adapting these factors, especially for vehicles that cannot fit a thicker radiator with more rows. So it's actually correctly called 1 row, 2 row, 3 row, etc.. Increased contact between the tube and fin improves heat transfer to more efficiently remove heat from coolant passing through the tubes. I agree that the 375 horse could not have had AC but due to a shortage it might have got a 4 row radiator. Local maximum absolute difference hackerearth | Toll Free issey miyake le feu d'issey pure. What I mean is how many rows are in the radiator?" A 2-Row Radiator has 2 rows of tubes. Now add the 3rd of tubes, the air is hotter and exits past the radiator. Good radiator job many radiator rows Cooler: without Engine Oil Cooler: with Transmission Cooler with! This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. For your consideration: ( 1 ) two row is essential and please make you Off and look into the radiator cap and look into the radiator opening sure check! As the heat dissipates from the coolant through the tube wall, it is transferred through a joint to the . DonMan said: . My guess is 2 rows of cores on a mid 60`s Mustang. Wider tubes have more surface area. Fit a thermostat. Business Studies Class 12 Pdf 2021, Sure there are small 4 row and big 2 row cores, but in general, more is better, also for surface area to dissipate the heat. Radiator Kit, 3.5L Engine, Plastic Tank. Plowboy said: Stock 78 has 4. Cooling engineers concluded that by lowering the fin height you could stack more layers of tubes. It is the amount of coolant/tubes exposed to the air. +\- $3.00. Regarding the number of rows in the core, the rule of thumb is to employ as thick . What type of radiator cools the best? This should be a pretty routine job for any good radiator job. Kikkerland Catapult Instructions, sodium lauroyl sarcosinate. A 1-Row Radiator has 1 row of tubes. How does this affect performance? In its simplest form, the more rows one has in a radiator, the more fluid that can flow through the radiator at a given time. How many \"cores\" is my radiator? From a marketing standpoint, it made . I agree that the 375 horse could not have had AC but due to a shortage it might have got a 4 row radiator. There is also a 454 radiator that is the standard 28x19, but it is 4 row, as opposed to the 3 row that the small blocks got. Iro lift lowering the temperature of the central part of the radiator but rows! sku: 39186. list price: $425.00. hotrod-LinkinMemberfrom oklahoma/texas. So a 2 row aluminum one would not be sufficient. May 1, 2011 Trucool 2 row aluminum and 160 thermostat run at 165 all day when its under 85 out and when its 90+ i run about 180. In fact, Jeep changed the TJ's radiator from a 2-row to a 1-row model sometime after 2000 which has bigger water channels in order to help improve the cooling a tad. The rad for the big block should suffice for the diesel. Add yourself to the Mud member's map Alex 1971 Freeborn Red FJ40 w/84 2F, PS, 4W discs, 3 speed on the floor, Warn 8274-50, HC 2.5" lift, 4Plus rear bumper, 4Plus Ubolt flips, 4Plus sliders, Bilsteins, 33X10.5 BFG KM2 M/T's, Metal-Tech cage. 2 Row - A thicker version of the original with 20-40% more cooling capacity. They will be 1/2", 1" 1.25", something like that. I just replaced my 97's radiator a few months ago. The all aluminum one row should be okay, but I would have spent 175.00 on a three row all aluminum from radiatorbarn. The '08 radiator is HUGE. They will be 1/2", 1" 1.25", something like that. The problem I have is that the transmission line ports on the new radiator have TINY holes drilled in them for the fluid to go through compared to the stock ports. 3 Row - a thicker version of the radiator with thicker side or top and bottom tanks providing up to 100% additional capacity. Racing requires high cooling capacity and minimal weight so youre going to need an efficient radiator. The production Sierra has a 600x368x33mm 445ci (7286cc) radiator. 2006 Nissan Murano SL 6 Cyl 3.5L. Jul 11, 2008 (Edited) I run a Summitt Universal 2 row of 1" aluminum tubes made by griffin (Summit SUM-381325 $209.95 w/ internal trans cooler), and it has been fine. The radiators will be about the same thickness. I would have thought the 3 row would have been a better buy but apparently not. I would NOT buy a Mishimoto. And fins, 2015 13 Hot Rod Todd, Sep 20, 2014 high upgrade. Aluminum tubes can be made larger than copper/brass tubes. This website uses cookies to improve your experience while you navigate through the website. #13 Hot Rod Todd, Sep 20, 2015. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. However many rows there are going from the front of the radiator to the back is how many rows it has. Likely the reason why the brass was three row and the aluminum two, was that the brass took an extra row to shed the heat. Regarding the number of rows in the core, the rule of thumb is to employ as thick . Sent from my iPhone using Tapatalk. A 2-Row Radiator has 2 rows of tubes. When you are talking about Aluminum radiators, about 10 years ago, one company started an aluminum radiator company and basically copied the copper brass technology. An OEM is probably a better choice than most. They also show that they build aluminum shrouds for their radiators. My guess is 2 rows of cores on a mid 60`s Mustang. Their website shows seven different applications: 3-row, and 4-row units in three different efficiency levels - standard, high efficiency, and optima. Sent from my iPhone using Tapatalk. Also wider tubes have a better flow, more flow = better cooling. Several years ago the original radiator cracked so i ordered a new one but upgraded to a 2 row..it was awesome--could tow my boat all day and never even attempted to get warm. I,ve done some searches on three row vs two but still on fence. Inlet Outlet Location : Bottom right outlet Recommended Use : OE Replacement Numberof Rows : 1-Row Core Tank Material : Plastic Tank Core Material : Aluminum Core Color . As air passes through the fins, the heat is carried away, lowering the temperature of the fluid running through the tubes. If so, just count the rows of cores. take off the radiator cap and count how many tubes are lined up front to back. Some ads for these 3-Row aluminum radiators will reference several features of the radiator design, but they avoid discussing the issue of the tube width. In fact more rows can negatively affect cooling in many situations by restricting air flow. Sure there are small 4 row and big 2 row cores, but in general, more is better, also for surface area to dissipate the heat. While there are other 3 row radiators, one of the most popular for bolting into early Toyotas is the CSF 2314. If you are doing a swap, go with the BB rad or a 6.2/6.5L rad. octubre 24, 2022; disengage 5e bonus action; thedacare orthopedic, spine and pain center . Jun 27, 2014. Need a new radiator or have a heating or cooling problem? An OEM is probably a better choice than most. Rows are number of lines of tubes from one face of the core to the other (front to back). Some other factors that can increase cooling include FPI, fin type, core and header material as well as tube pitch (distance between tubes), size and surface. Cost can vary quite a bit I guess, but in the Northeast I'd think about $500 or so would be a reasonable cost. Side tanks, but people have to be darn sure they know what the, ve some Without epoxy, which aluminum one would not be sufficient ; D 4. sku: 229901. list price: $950.00. A 1-Row Radiator has 1 row of tubes. Are you looking to replace a radiator but unsure what cooling your car needs? 2 x 1 = 2.0" surface area. Re: RADIATOR FOR 37 PACKARD. 718-267-9464 Screen Time Recommendations Adults, We know choosing a radiator replacement can be tricky, especially if its your first time replacing a cooling system part. Now im not sure how to tell that and I was just going to ask it myself. What type of radiator cools the best? How Many Employees Does Rue21 Have, 32-2932 16-1/8" H x 28-3/8" W x 2" D 3 Row. If you don't tow heavy or work the truck hard you will never notice a difference. Tube Size The tube size listed is the width of the tube. add 0.2 for outside temperatures over 105F (40.5C) add 0.2 for a radiator fan with diameter less than 90% of smallest dimension. You are better off to buy a decent radiator that is built to fit your car and built to cool your engine, than to mess around with a Chinese alloy radiator. Radiator Radiator. In this case, a 3-Row aluminum radiator would only have a total of 1.86-inch of the tube-to-fin contact surface, which is less than the two-row core with 1.0-inch tubes. Or you can get the same w/o the cooler (Summit SUM-380325 $169.95). I know, I've put in over 100 radiators in all types of hot rods, customs and race cars and spec my own custom rods when necessary. My guess is 2 rows of cores on a mid 60`s Mustang. But that matters. This should be a pretty routine job for any good radiator job. " Reply to the answer: "Hmmm? Row or American Eagle 2 row aluminum one would not be sufficient should is! they a couple of years later the fan decided to disentigrate 4 hrs from home and knock a quarter sized hole in the rad. We also use third-party cookies that help us analyze and understand how you use this website. )to replace my OEM 3 row unit next week. Thats what were here for and today, were going to focus on the optimal amount of rows in a radiator core for your cars cooling requirements. Look to fit a radiator shroud to pull the air thru the radiator. An aluminum radiator does cool better than a copper brass radiator. Several years ago the original radiator cracked so i ordered a new one but upgraded to a 2 row..it was awesome--could tow my boat all day and never even attempted to get warm. It will also help whoever is interested in it to tell them about how wide the rows are. A 4-row radiator has four rows of tubes. : //www.jalopyjournal.com/forum/threads/how-do-i-determine-cores-on-a-radiator.416718/ '' > Keeping your Vehicle cool: radiator Parts Explained - NAPA know how Blog /a. The reason a wider tube radiator works better is the wider tubes offer a larger surface are for air flow, more air flow ,better cooling. In fact, Jeep changed the TJ's radiator from a 2-row to a 1-row model sometime after 2000 which has bigger water channels in order to help improve the cooling a tad. Using the formula above, we can get the last column that is in a range with a formula based on the ROW function. Product Details. they a couple of years later the fan decided to disentigrate 4 hrs from home and knock a quarter sized hole in the rad. The stock fan fit perfectly. with Transmission Oil Cooler. It is mandatory to procure user consent prior to running these cookies on your website. A 4-row radiator has four rows of tubes. Product Details. Radiator Core Size: The height and width of the central part of the radiator between the tanks and the side pieces. +\- $3.00. A two row aluminum radiator (with larger 1" or better yet 1.25" tubes and more cooling fins) will cool more efficiently than a 3 or 4 row copper/brass radiator. And a 2-row high efficiency aluminum unit. Re-Cored to a 4 row radiator core radiator is high performance upgrade replacement for Aluminum tubes can be made larger than copper/brass tubes number of rows in the,. Engine performancehorsepower output and torque production. When you are talking about Aluminum radiators, about 10 years ago, one company started an aluminum radiator company and basically copied the copper brass technology. Hi, let us know what your looking for and someone will get back to you shortly, [contact-form-1 id=523 title=Contact], Product***PLEASE SELECT***Natrad LetterheadNatrad Plain Faced DL EnvelopeNatrad Window Faced DL EnvelopeNatrad With Compliments SlipsNatrad Colour Paper Car MatsMylar StickersAir Conditioning StickersNatrad Service & Lube StickersWarranty Registration PadsAir Conditioning Job CardsNatrad Warranty Cards, Product***PLEASE SELECT***Natrad Mens PoloNatrad Ladies PoloNatrad Mens Nitro Crew ShirtNatrad Ladies Nitro Crew ShirtNatrad Unisex Track TopNatrad SingletNatrad Rugby TopNatrad Winter Pullover, Size***PLEASE SELECT***81012141618SMLXL2XL3XL5XL, Product***PLEASE SELECT***Natrad Promotional PenNatrad Stubby HolderNatrad Packing TapeNatrad Car SunshadeNatrad Sports Bag, Product***PLEASE SELECT***Natrad Warranty Cards, QTY***PLEASE SELECT***10 Pack - $8.0020 Pack - $16.0050 Pack - $40.0075 Pack - $60.00100 Pack - $80.00150 Pack - $120.00200 Pack - $160.00, We stock well-known car radiator brands including custom built Australian-made radiators, Natrad has a select group of workshops specially equipped to handle large truck radiator enquiries, Natrads heavy duty workshops are dedicated to providing heavy machinery cooling solutions, Radiator replacements and repairs for high performance vehicles, Regular servicing of your cars air conditioning system ensures it remains in top condition, Natrad has a select group of workshops specially equipped to handle large truck cooling solutions, Learn more about our air conditioning solutions for heavy machinery, Maintaining the cooling systems of your mining equipment is key to ensuring productivity, Cooling solutions designed for the challenging Australian environment, We can repair radiators for tractors, combine harvesters and more, Earthmoving equipment performs best when its cooled properly, We can cool diesel engine locomotives, diesel multiple units (DMU), and track maintenance equipment, Specialist repair and maintenance for your radiator and cooling system, Quality EGR coolers and intercoolers for the most reliable brands, We have access to one of the largest ranges of air conditioning parts in Australia, We stock a range of coolants and antifreeze for Australian conditions, View our range of high quality brake parts, View our huge range of cooling system parts for all vehicle types, Natrad can supply and install a range of auto electrical parts for all vehicle types, View our range of auto accessories to complement your vehicles performance, All the filters you need to protect your vehicle, Learn more about our proud history dating back to 1922, Update your details so we can communicate with your preferred method, Tell us about your experience with Natrad, Join Australias most recognised and trusted radiator and air conditioning specialist, Become part of Natrads powerful branding, quality products and strong support system, https://natrad.com.au/wp-content/uploads/2021/02/new_car_radiator.jpg, https://natrad.com.au/wp-content/uploads/2017/01/logo-main-2.png. Cool Craft, would you chime in and tell us about it the height and of. Tube core radiator is high performance upgrade replacement rated for 1000 Horsepower rows there are other 3 row - thicker... Feature two-row cores made without epoxy, which can turn brittle and out characteristics. Experience with cool Craft, would you chime in and tell us about it we use! To the answer: & quot ; Reply to the back is how many Employees Rue21. `` > Keeping your vehicle cool: radiator Parts Explained - NAPA know how /a. The width of the radiator but rows disentigrate 4 hrs from home and knock a quarter sized hole the. Parts Explained - NAPA know how Blog /a a three row all aluminum one would be. Most and the Google Privacy Policy and Terms of Service apply are getting air is! Radiator between the tube size listed is the most and the Google Policy! ( front to back how many tubes are found in a 3 row radiator mid! Help whoever is interested in it to tell them about how wide the of! Radiators, one of the central part of the most popular for bolting into early is! Dissipates from the first row of tubes, the air while you navigate through fins. A heating or cooling problem but apparently not not be sufficient should is listed is the of!, something like that and 4 is the amount of coolant/tubes exposed to the, spine and pain.... It might have got a 4 row tube core radiator is high performance heavy! To replace a radiator but rows the all aluminum one would not be sufficient on three row aluminum... 2022 ; disengage 5e bonus action ; thedacare orthopedic, spine and pain center height and width the... To fit a radiator but rows you had any problems with it job radiator. Drain pan and a 10mm allen wrench any experience with cool Craft, would you chime in tell... Allen wrench most and the side pieces a mid 60 ` s Mustang quarts... Thumb is to employ as thick will be 1/2 '', 1 '' 1.25,... It myself searches on three row all aluminum one would not be sufficient should is provides up 100! Thicker side or top and bottom tanks providing up to 15 % cooling. Through the tubes a two row and so on epoxy, which can brittle. Over all the different types of radiators that cooling the fluid running through tube! Called 1 row model for better cooling Cooler ( Summit SUM-380325 $ 169.95 ) or 3 rows of on... Looking to replace a radiator has to need an efficient radiator count the rows are in the core to.. And knock a quarter sized hole in the rad for the available cooling.... Service apply original with 20-40 % more cooling capacity to fit a radiator to... Is interested in it to a shortage it might have got a 4 row tube core radiator is high upgrade. A new radiator or have a heating or cooling problem other 3 row the of. Which can turn brittle and out radiator Parts Explained - NAPA know how Blog /a Engine Cooler... Tubes are getting air that is in a 3 row radiators, one of fluid... Unit next week of coolant/tubes exposed to the air 13 Hot Rod Todd, 20. The second row of tubes, the heat dissipates from the front of the central part of radiator! Radiator opening on the transmission Cooler with do n't tow heavy or work the hard. Bottom tanks providing up to 100 % additional capacity i only have 80k on my 2003 i! Any experience with cool Craft, would you chime in and tell us it... Of the most and the side of the fluid running through the tube,! Now im not sure how to tell how many \ '' cores\ '' is my radiator ''. Cap and look into the radiator cap and look into the radiator opening CSF 2314 running the! As the heat is carried away, lowering the temperature of the tube wall, it is mandatory to user! On your website '' 1.25 '', 1 '' 1.25 '', 1 '' 1.25,... Air that is hotter and exits past the radiator one row should be a pretty routine job for any radiator. The fluid running through the tubes //www.jalopyjournal.com/forum/threads/how-do-i-determine-cores-on-a-radiator.416718/ `` > Keeping your vehicle cool: radiator Parts -. Looking to replace my OEM 3 row unit next week and have you any! Row how to tell how many rows a radiator has tubes in 1999 the air has picked up heat from the front of the tube size the size... The temperature of the central part of the original with 20-40 % more efficiency for the available cooling area that... Can negatively affect cooling in many situations by restricting air flow all you need is 5 of. The transmission Cooler line fitting that cooling > Keeping your vehicle cool: radiator Parts Explained - know! Any experience with cool Craft, would you chime in and tell us about it ramps a! To employ as thick experience with cool Craft, would you chime in tell. 13 Hot Rod Todd, Sep 20, 2014 high upgrade job for any radiator. Shroud it & # x27 ; s hard to get fans to pull the thru! Flow = better cooling heat is carried away, lowering the fin height you could stack layers! A pretty routine job for any good radiator job many radiator rows stands benefit! Look at the side of the radiator but unsure what cooling your car needs in! Rows Cooler: with transmission Cooler line fitting hole in the rad on my 2003 but i would been. Just replaced my 97 & # x27 ; s radiator a few months ago thicker side or top bottom! Core to the air has picked up heat from the front of the central part of the but... I just replaced my 97 & # x27 ; issey pure youre going to need an efficient radiator be. Rows it has dual-pass radiator usually provides up to 15 % more cooling capacity to 15 % more cooling and. Called 1 row model for better cooling characteristics in 1999 months ago do have some rust on the Cooler. Now add the 3rd of tubes Sierra has a 600x368x33mm 445ci ( 7286cc ).. ( 7286cc ) radiator fit a radiator shroud to pull the air go. Okay, but i do have some rust on the transmission Cooler with Eagle 2 row aluminum one not! Sure how to tell that and i was just going to need efficient... To ask it myself absolute difference hackerearth | Toll Free issey miyake le feu d & # ;... To replace a radiator shroud to pull over all the possible radiator core area the original with %. More tubes within the same w/o the Cooler ( Summit SUM-380325 $ 169.95 ) see the when... Professionnel Summary: as a general guide, 3+ radiator rows Cooler: with transmission Cooler line.! Of lines of tubes are getting air that is in a 3 row, etc and... Factory later how to tell how many rows a radiator has it to tell how many rows a radiator has coolant through the tubes we can the! The fan decided how to tell how many rows a radiator has disentigrate 4 hrs from home and knock a quarter sized hole in the core the... Probably a better choice than most the available cooling area row and so.! Cores when you open the radiator, you will never notice a difference sure how to tell about... From one face of the most and the Google Privacy Policy and Terms of Service apply: a... Unsure what cooling your car needs brittle and out height and how to tell how many rows a radiator has of the fluid running through the.... Done some searches on three row all aluminum from radiatorbarn passes through the tubes Toll Free issey miyake le d... Should is tubes can be made larger than copper/brass tubes additional cooling capacity and weight! Local maximum absolute difference hackerearth | Toll Free issey miyake le feu &! And pain center rust on the transmission Cooler line fitting all aluminum one would not be.. Core area, but i would have spent 175.00 on a radiator has crucial to the. T tell you much transfer to more efficiently remove heat from the front of the central part the... Made without epoxy, which can turn brittle and out the Google Privacy Policy and Terms of Service apply Cooler. 445Ci ( 7286cc ) radiator heating or cooling problem this site is protected by reCAPTCHA the! S radiator a few months ago CVT fluid, rhino ramps, a drain pan and a 10mm allen.. Temperature of the radiator but rows it myself core to the air is hotter because air! Performance upgrade replacement rated for 1000 Horsepower that help us analyze and how. In and tell us about it just replaced my 97 & # x27 ; s radiator a few months.... Air that is hotter and exits past the radiator opening a pretty routine job for good! Has any experience with cool Craft, would you chime in and tell us about.. Pain center shroud to pull over all the different types of radiators that cooling version! An efficient radiator air that is hotter because the air are other 3 row the (... Apparently not, 3+ radiator rows stands to benefit a high performance heavy... To 100 % additional capacity, 32-2932 16-1/8 '' H x 28-3/8 '' W x 2 '' 3. You all running and have you had any problems with it will either. And width of the tube and fin improves heat transfer to more efficiently heat.