GHL Headers and Heat Exchangers

[Scooter]

Anyone have comments on GHL headers and heat exchangers? My mechanic told me the GHL's have bigger pipes, which actually allow for more HP gain on a 3.2, unlike SSI's. I have been told that there may be a problem with GHL's allowing water or moisture in the heat exchangers, producing steam in the cab and fog on the windows. Is this true? Any comments are appreciated. Thanks.

[Bill Verburg]

The SSI's are only a little undersized on a 3.2. They can and have been successfully used even on 3.6. The issue is cost /benefit, for much less $$ you can fit a euro pre muffler and derive 90% of the benefit. The equal length pipes don't add anything unless cams w/ more overlap are also installed. You are only reducing flow restriction for these engines.

The GHL design does not tightly fit the heater boxes around the pipes , so yes, water can enter at this point and yes, it will find it's way into the cabin.

[Craig 930 RS]

I'd go with SSIs if you are staying with a 3.2.
Actually, I'd stay with your stock Carrera HEs - they are nearly
as good as SSIs re HP. Bang for buck wise this is the way to go.
But for the cool factor - SSI or GHL are nice.

A tiny bit more HP can be gained with a dual in dual out muffler.

Craig
RS
3.0 with SSIS and Monty muffler

[jpachard]

You should stick with 1 5/8 OD primaries, 1 1/2 ID. Anything else is a bit big and will hurt your midrange. Is this a stock motor?

Cheers, James

[Scooter]

I have a stock 3.2. I have a euro pre-muffler and single in, dual out flowmaster in my garage as we speak. The flowmaster is from a 3.0 and my mechanic told me that it does not fit my 3.2 properly. The option of GHL headers and heat exchangers along with a GHL dual out or single out muffler (my option) has presented itself, so I have to at least consider it. I will be purchasing a Steve W chip as soon as I decide what exhaust to run.

[john walker's workshop]

PM piedogger and ask about what he thinks about them. in fact he may have a set for sale.

[Scooter]

Thanks for the input guys!