What I'm Thinkin'...
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
You're welcome.
Though you may prefer to use my earlier formulas, which are decent approximations of all the complicated math, at least if you intend to use junkyard turbos rather than buy something new and want to learn how to decipher the complex compressor maps.
Glad it was helpful.
Though you may prefer to use my earlier formulas, which are decent approximations of all the complicated math, at least if you intend to use junkyard turbos rather than buy something new and want to learn how to decipher the complex compressor maps.
Glad it was helpful.
Thread Starter
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Freshman User
Joined: Aug 2006
Posts: 39
Likes: 0
Wow, thanks for that! I'll definatley have to save that post for reference... On a side note however... I was thinking about constructing my own intercooler with a tranny cooler or small radiator. Have you done this? You seem like the guy to talk to on this stuff.
Thanks again for all your help!
Thanks again for all your help!
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
No, haven't done that. Considered it, but decided for my purposes over the years, it would be just too darn small.
based on the numbers I put together for building my 500cid, twin turbo crewcab, even the powerstroke intercooler (which I have on the shelf) is probably "borderline" as far as usefulness.
There are plenty of OEM cars with intercoolers. Dodge, mazda, T-birds and so on. Junkyards and ebay are littered with them. If you are considering constructing your own, using one or a pair of those might be a better starting point. At least they were designed with the intention of flow numbers higher than a radiator or tranny cooler.
Most radiators are designed to work with liquids... and with air, you'll find that the inside shape of the end tanks aren't condusive to good flow of air - meaning that 1/2 of the radiator will get very hot from the compressed air, and the rest of it will get warm via convection.
based on the numbers I put together for building my 500cid, twin turbo crewcab, even the powerstroke intercooler (which I have on the shelf) is probably "borderline" as far as usefulness.
There are plenty of OEM cars with intercoolers. Dodge, mazda, T-birds and so on. Junkyards and ebay are littered with them. If you are considering constructing your own, using one or a pair of those might be a better starting point. At least they were designed with the intention of flow numbers higher than a radiator or tranny cooler.
Most radiators are designed to work with liquids... and with air, you'll find that the inside shape of the end tanks aren't condusive to good flow of air - meaning that 1/2 of the radiator will get very hot from the compressed air, and the rest of it will get warm via convection.
Senior User
Joined: Jul 2006
Posts: 138
Likes: 0
Originally Posted by frederic
based on the numbers I put together for building my 500cid, twin turbo crewcab, even the powerstroke intercooler (which I have on the shelf) is probably "borderline" as far as usefulness.
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
Yep, it started off as a 89 EFI 460. Now it's 500cid, has a 6.8:1 c/r, ready for more boost than you can shake a stick at 
The cam/crank are Ford, a lot of the internals are "other".
Though if you like diesels, I have a good friend who built and drives (as his daily) an 70's F250 highboy with a 24V 2003 Dodge Cummins, 6sp, and a pair of holets turbos instead of the one. One turbo for cyls 1, 2, 3 and the other for 4, 5, 6 which was convienent for me to make the manifolds since the firing order is staggered like that.
It's coming off the road for the winter so he can do the much needed body work before the truck completely disappears... as it is, every pothole he hits drops about 5lbs of rust onto the ground lmao
The cam/crank are Ford, a lot of the internals are "other".Though if you like diesels, I have a good friend who built and drives (as his daily) an 70's F250 highboy with a 24V 2003 Dodge Cummins, 6sp, and a pair of holets turbos instead of the one. One turbo for cyls 1, 2, 3 and the other for 4, 5, 6 which was convienent for me to make the manifolds since the firing order is staggered like that.
It's coming off the road for the winter so he can do the much needed body work before the truck completely disappears... as it is, every pothole he hits drops about 5lbs of rust onto the ground lmao
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