I mean other than size are they all the same efficiency wise? Im gonna go to my local autoparts store and ask them for a heatercore thats 5x10 inches and was wondering if all 5x10 heater cores would perform the same. Thanks for any help in advance.
![[H]ard|Forum](/styles/hardforum/xenforo/logo_dark.png){kind=logo}
-
Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Are all heatcores equal?
- Thread starter Tunabow
- Start date
Little Grabbi
Gawd
- Joined
- Aug 15, 2003
- Messages
- 565
there are two basic factors:
Size, and
thickness
these determine the surface area, and with surface area, more is better.
Then there is the number of times the tube passes through the entire length of the radiator. Here too, more is better.
Size, and
thickness
these determine the surface area, and with surface area, more is better.
Then there is the number of times the tube passes through the entire length of the radiator. Here too, more is better.
You forgot how many passes a radiator is.... You can find one; two, and sometimes, three pass radiators. The most common heater core for DIY users in the US seems to be the 2-302 Bonneville core, this is about 5x12 inches total. This core is a double pass design, meaning the water goes in one end, turns around, and then comes back out making a bend in the rad. If you are running a weaker pump you may want to look into a single pass radiator since this causes less flow restriction and will give you a higher flow rate. If you go this route, the common choice seems to be the 2-342 core which is roughly the same size as the 2-302 but will have barbs on opposite ends since water only passes through it once.
thewhiteguy
Supreme [H]ardness
- Joined
- Jun 17, 2002
- Messages
- 4,551
77 Boneville heatercores are roughly 5"x12". This is a common heatercore and only costs about $20.
Edit: BEATEN!
Edit: BEATEN!
Are all heatercores equal?
no. some have been weaponized.
sorry, couldn't refuse that one.
anyway, there are several options for dual 120mm heatercores - some are much easier to mod that others though and they definitely have different pump requirements depending on whether they are single pass or dual pass as well as the rest of the components in the cooling loop.
3 of the most often used cores are the 2-302 ('77 bonneville with a/c), the 2-199 ('77 b'ville without ac) and the 2-342 ('70 chevy c10 pickup with ac)
the 302 is the most likely to fit in the space you are looking at as it has a little less width than the 199 or the 342.
specs:
2-302:
10-3/4" X 5-5/8" X 2" w/o the tanks
about 12-1/2" X 5-5/8 X 2" with the tanks
^that is according to fedco and original spec sheet. Note that not core manufacturers stick closely to the specs - some replacement models of the 302 core will have a finned core area of 10-1/2" x 5-5/8" depending on which company produced the core (i.e. GDI, Stant, Ready Aire, etc. etc.) The most common 302 cores seem to be 10-3/4 but you will run into a 10-1/2" cored model ever now and then - I have a couple of them that are 10-1/2 but most are 10-3/4"
2-199:
9.5" x 6.125" w/o the tanks
depending on the design of the top and bottom tanks (some are flatter and more rounded than others) - about 10-1/4 to 10-3/4" x 6.125" w/o the tanks
2-342:
9.5" x 6.125" w/o the tanks
about 11" x 6.125" with the tanks.
as mentioned above, any of the cores can be about .25" from the specs on width, length or both depending on the maker so I wouldn't start chopping on anything until you get the core you are going to use and then measure it.
a pic of all three cores (in various stages of the mod process)
the black one in the foreground is a modded 342 single pass core with a 1.5" standoff shroud mounted to it - it has also had side plates silver soldered onto it, hence, no wavy sided look.
the one in the middle is a 2-199 - it has had the factory tubes trimmed, deburred and polished and copper side plates soldered onto it.
the one in the back is a 2-302 - it has had the factory inlet and outlet tubes removed, the holes in the top tank threaded, 1/2" brass barbs threaded and then soldered in place.
as for the 199 and 302, look for cores with round holes where the tubes enter the top tanks - they are usually much easier to mod.
as opposed to rewriting all of this, I think I'll be lazy:
http://www.ocforums.com/showthread.php?t=304440
^that's about 5 pages of 302, 342 & 199 info.
no. some have been weaponized.
sorry, couldn't refuse that one.
anyway, there are several options for dual 120mm heatercores - some are much easier to mod that others though and they definitely have different pump requirements depending on whether they are single pass or dual pass as well as the rest of the components in the cooling loop.
3 of the most often used cores are the 2-302 ('77 bonneville with a/c), the 2-199 ('77 b'ville without ac) and the 2-342 ('70 chevy c10 pickup with ac)
the 302 is the most likely to fit in the space you are looking at as it has a little less width than the 199 or the 342.
specs:
2-302:
10-3/4" X 5-5/8" X 2" w/o the tanks
about 12-1/2" X 5-5/8 X 2" with the tanks
^that is according to fedco and original spec sheet. Note that not core manufacturers stick closely to the specs - some replacement models of the 302 core will have a finned core area of 10-1/2" x 5-5/8" depending on which company produced the core (i.e. GDI, Stant, Ready Aire, etc. etc.) The most common 302 cores seem to be 10-3/4 but you will run into a 10-1/2" cored model ever now and then - I have a couple of them that are 10-1/2 but most are 10-3/4"
2-199:
9.5" x 6.125" w/o the tanks
depending on the design of the top and bottom tanks (some are flatter and more rounded than others) - about 10-1/4 to 10-3/4" x 6.125" w/o the tanks
2-342:
9.5" x 6.125" w/o the tanks
about 11" x 6.125" with the tanks.
as mentioned above, any of the cores can be about .25" from the specs on width, length or both depending on the maker so I wouldn't start chopping on anything until you get the core you are going to use and then measure it.
a pic of all three cores (in various stages of the mod process)
the black one in the foreground is a modded 342 single pass core with a 1.5" standoff shroud mounted to it - it has also had side plates silver soldered onto it, hence, no wavy sided look.
the one in the middle is a 2-199 - it has had the factory tubes trimmed, deburred and polished and copper side plates soldered onto it.
the one in the back is a 2-302 - it has had the factory inlet and outlet tubes removed, the holes in the top tank threaded, 1/2" brass barbs threaded and then soldered in place.
as for the 199 and 302, look for cores with round holes where the tubes enter the top tanks - they are usually much easier to mod.
as opposed to rewriting all of this, I think I'll be lazy:
http://www.ocforums.com/showthread.php?t=304440
^that's about 5 pages of 302, 342 & 199 info.