3.5i/3.9i Cast Manifolds

TVRTASMIN · Post by **TVRTASMIN** » Wed May 07, 2008 4:48 pm

Was thinking of using two of the right hand cast manifolds (HRC1583) on my P6, as i don't have room for fitting the left hand manifold.
Anybody used this configuration? Should be better than the standard 4-1, as i'm after torque rather than top end power.
Anybody any thoughts?

ChrisJC · Post by **ChrisJC** » Wed May 07, 2008 7:51 pm

Presumably you mean two 'starter motor side' manifolds? If you mean two 'non-starter motor' side manifolds, I think it will foul on the starter.

Not sure what it would do to power, and of course you'd have to make up the downpipes.

Chris.

TVRTASMIN · Post by **TVRTASMIN** » Wed May 07, 2008 9:36 pm

The two manifolds i aim to use are the shorter of the normal pair. The one where they exit straight down rather than swept back.
I wouldn't have thought i would have clearance issues with the starter though.
I appreciate having to fabricate downpipes, but i was considering using the Range Rover items modified slightly.

Post by **katanaman** » Wed May 07, 2008 10:52 pm

I take it your on about 4x4 manifolds 4 into 2 into 1? you shouldn't have any problems although they aren't the greatest power wise.

TVRTASMIN · Post by **TVRTASMIN** » Thu May 08, 2008 6:54 am

Correct.

I know tubular manifolds would be better for power, but having had a Range Rover and TVR with tubular manifolds, i would prefer to have a little less under bonnet noise.
I'm sure the Rangy 4-2-1 should be better than the standard P6 4-1 log.

ChrisJC · Post by **ChrisJC** » Thu May 08, 2008 7:23 am

TVRTASMIN wrote:The two manifolds i aim to use are the shorter of the normal pair. The one where they exit straight down rather than swept back.
I wouldn't have thought i would have clearance issues with the starter though.

They should fit fine then - as you're using the starter-side one on both sides.

Chris.