Exhaust manifold what to do?

[coxyboy]

Hey people have just recently had my gearbox rebuilt and fitted a new vr6 clutch and g60 flywheel which I must say i am very pleased with as it revs noticeably quicker in the taller gears only problem is my car started to sound like a tractor over the last week and I've noticed I have several bad cracks in my exhaust manifold one I could get a piece of paper through it's so wide, my question is rather than buy another standard one I was thinking of upgrading, I have seen a couple of stainless 4 - 1's on flee bay one equal length and one unequal lengths, so are there's any good if so what's best performance wise, at the moment it's running 240bhp on a ko3s with the standard manifold also what sort of power could I expect which a high flow mani?
Cheers
James

 

[chris_200120vt]

dont get one of those ebay manifolds there crap, either buy a standard one and give it to bill to port or get a jbs manifold , i went for a jbs i was surprised in the size differnce with the standard and jbs

 

[tashacupra]

Hi, you may have seen this, but if you have not it's an interesting read regarding eBay manifolds and people's opinions on them.

http://www.seatcupra.net/forums/showthread.php?t=248458&highlight=eBay+manifold

 

[coxyboy]

dont get one of those ebay manifolds there crap, either buy a standard one and give it to bill to port or get a jbs manifold , i went for a jbs i was surprised in the size differnce with the standard and jbs

There a bit steep for me, what sort of gains are to be had from the jbs though? Also what gains from the standard one if ported? Don't really fancy buying a used one incase it cracks so going to get a price for a new one, do you know roughly how much it would be to be ported?
Thanks

 

[chris_200120vt]

not too sure on the gains but im sure bill says this ported ones are as good as a jbs manifold i only bought my jbs as it was up for sale at £250 plus with going hybrid wanted something up to the job

 

[CupraElliott]

I have had two INA manifolds and they both have been fine. Some people say you can get trouble with them cracking.