Intercooler for K27HF
09-28-2004, 01:32 PM
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Racer
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Intercooler for K27HF
Getting ready to draw up list of things to do during winter, so am considering "upgrading" my intercooler.
Just wonder if anyone has done a full bay conversion with the K27HF?
Does it need a full bay? What cfm should I use for calculations?
thanks.
Just wonder if anyone has done a full bay conversion with the K27HF?
Does it need a full bay? What cfm should I use for calculations?
thanks.
09-29-2004, 09:02 AM
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PT:
Here are my pics. I bought an intercooler core from Bell Intercoolers that flows 1010cfm. I bought a 25x10x3.5 core.
Engine Pics
Here are my pics. I bought an intercooler core from Bell Intercoolers that flows 1010cfm. I bought a 25x10x3.5 core.
Engine Pics
09-29-2004, 10:31 AM
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Thanks for the pic Brian... Just curious - how did you come up with needing 1010 cfm core?
From what I remember, you switched to EFI? I am just wondering if there's any difference in cfm requirements for CIS vs EFI? I suspect not but then EFI will create better combustion so might "flow" more than CIS would?
From what I remember, you switched to EFI? I am just wondering if there's any difference in cfm requirements for CIS vs EFI? I suspect not but then EFI will create better combustion so might "flow" more than CIS would?
09-29-2004, 10:44 AM
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I was told to base cfm off of expected HP. If you expect 600HP, multiply that by 1.5 to get your cfm rate.
So that is what I based it on.
I think EFI flows more than CIS (simply an opinion).
I will tell you that if you have a K27HF using GHL headers you will more than likely run into overboost. I have a .8 spring and can easily see 1.4bar.
Ask hobieboy on this board. He has experienced .95 bar with a .6 boost spring with a K27HF and GHL's. Just keep that in mind.
Brian
So that is what I based it on.
I think EFI flows more than CIS (simply an opinion).
I will tell you that if you have a K27HF using GHL headers you will more than likely run into overboost. I have a .8 spring and can easily see 1.4bar.
Ask hobieboy on this board. He has experienced .95 bar with a .6 boost spring with a K27HF and GHL's. Just keep that in mind.
Brian
Somehow Rennlist wont let me use that user name 
One of these days, will sync up all my user names
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09-29-2004, 11:58 AM
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Racer
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well no you did - at least now I have a starting point of considering how to size an intercooler.
Though the million dollar question becomes: will I really see any improvements over the Garretson I have?
Though the million dollar question becomes: will I really see any improvements over the Garretson I have?
