V8 Manifolds

[need4speed]

Will P-38 V8 manifolds be suitable to use on my 110 if the system is custom from the manifolds back?

[FridgeFreezer]

Can't see why not, although I seem to remember something about the P38 ones being more prone to cracking as they're not cast - could be wrong though.

[Hybrid_From_Hell]

3.5s are cast have single port exit + no very good

3.9s 4.0s are cast have twin exit ports + much better + twin downpipes

4.6s are thin metal tube + covers and have huge tendency to crack and fall apartt due to corrosion and / or cold water NigeUse

3.9 twins best std manifold

[need4speed]

http://www.ebay.co.uk/itm/260980484663?_trksid=p5197.c0.m619

These are what i was looking at. Says they are for 4.0 or 4.6

[Bowie69]

Nige, 4.0l are thin metal as well, and crack and fall apart.

[zardos]

Also a 3.9 with cats the exhaust immediately goes to a single pipe after the manifolds, so not much benefit there.

You can try a non cat front section for a 3.9 (esr225) which does have twin pipes for about the first meter but watch out the one I ordered from my local land rover independent (from all makes 4x4 but built by Klarius ) was carp.

It was built wrong (drivers side exhaust was built for backward pointing manifold where as my disco 3.9 points straight down and my independent said the exhaust should have been for a straight down manifold).

It was also shockingly badly built with big reduction in pipe diameter on the bends and 2 -> 1 joints were done by flattening the 2 pipes in to D shapes and stuffing in to a slightly larger pipe.

[need4speed]

Are the manifolds I put a link to in my last post the ones I need?

[zoltan]

I maybe missing something here but won't P38 manifolds point straight down at the chassis rails on a 110? Or are you factoring in cutting and shutting?

[rusty_wingnut]

Also a 3.9 with cats the exhaust immediately goes to a single pipe after the manifolds, so not much benefit there.

You can try a non cat front section for a 3.9 (esr225) which does have twin pipes for about the first meter but watch out the one I ordered from my local land rover independent (from all makes 4x4 but built by Klarius ) was carp.

It was built wrong (drivers side exhaust was built for backward pointing manifold where as my disco 3.9 points straight down and my independent said the exhaust should have been for a straight down manifold).

It was also shockingly badly built with big reduction in pipe diameter on the bends and 2 -> 1 joints were done by flattening the 2 pipes in to D shapes and stuffing in to a slightly larger pipe.

This is correct on mine I had to completely rework this exhaust.

[need4speed]

Regarding the V8 manifolds, is it ERR7393 and 7394 i should look for?

[mickeyw]

It was also shockingly badly built with big reduction in pipe diameter on the bends and 2 -> 1 joints were done by flattening the 2 pipes in to D shapes and stuffing in to a slightly larger pipe.

Alas this seems to be common practice with replacement exhaust systems. IMO this is hugely restrictive.

Proper way to do it would be to sculpt the two pipes to join each other without flattening, but this would be more expensive, not as easy to weld bodge together, and of course outside of the skills of the *******s that manufacture these parts.