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3 into 1 manifold
Posted: Sun Dec 05, 2010 7:54 pm
by tomkidd
How do Gents
What kind of manifolds are you racer types running? I currently have a Stage 2 Hi Flow maniflow manifold but have got hold of a second hand 2" system. I've measured up the old manifold and its smaller than the 2" system so I am wondering whether to ditch the system I have got hold of or get a 2" manifold?
Any advice?
Ta
Re: 3 into 1 manifold
Posted: Mon Dec 06, 2010 10:29 am
by guru_1071
tom
2" is only suitable for 1430 / 120 bhp and above
used on anything smaller it will just be a waste.
Re: 3 into 1 manifold
Posted: Mon Dec 06, 2010 10:43 am
by tomkidd
Ok cheers Rich, even on 1380?
Re: 3 into 1 manifold
Posted: Mon Dec 06, 2010 4:05 pm
by littler
what state of tune?
Re: 3 into 1 manifold
Posted: Mon Dec 06, 2010 4:09 pm
by GraemeC
Rich - simply a waste, or would it actually be detrimental?
I'm running a 2" system with just over 100 horses, would I see a gain from down sizing?
Re: 3 into 1 manifold
Posted: Mon Dec 06, 2010 4:12 pm
by tomkidd
I spoke to maniflow earlier, they suggest a stage III manifold at £300. I also spoke to someone who had a 1380 by swiftune and after fitting a stage III from maniflow saw a rise in bhp and torque and it pulled from 400rpm lower down.
My engine is 1380, weber and SW10 cam. It was producing 105bhp with a 1.5" SU
Re: 3 into 1 manifold
Posted: Tue Dec 07, 2010 4:35 pm
by littler
if you have a good compresion ratio the larger manifold would be benificial.
the only way as with anything is to try
my cars at the stage im thinking of trying one with a 2" system