Elva Rover V8 exhaust

[100SRV]

A colleague of mine is building an Elva with a Rover V8 engine, the exhaust system has 4 into 1 custom tubular manifolds for each bank but no link / balance pipe between the sides. There isn't a lot of room to route a balance pipe either due to low ground clearance.

Am I correct in thinking that the engine will run badly without a balance pipe or will this only be a problem at low engine speeds (say below 1500rpm)?

[eliot]

I think it will be fine without it.

[rev-erend]

It will be fine, do the two systems met up at all or are both system seperate all the way. The only reason for a balance pipe is to inprove scavenging but the same effect can be achieved by having the two systems met in a common centre box.

Here is a picture of mine before I welded on clamps for the manifolds..

Edited by rev-erend on Wednesday 20th April 09:17

[100SRV]

Hi,
thank you for responses...the systems are completely seperate from port to exhaust outlet.

[rev-erend]

You will just loose a few bhp / torque ..

[The Black Flash]

Plenty of V8 Dax's with separate systems for each bank, it'll be fine.

[elvaracingroger]

Interested to hear of the Elva being fitted with V8 power ... post said 'building' but assume rebuilding/restoring original car? Type/year etc?
I am aware of a Courier Mk.IV T-Type with V8 power and over the years many Elva sports racers have been fitted with non-original power units. Details of these and lots more will feature in the Elva book due to be published in August. Ground clearance always a problem with the various Courier models even with the 'standard' set-up, so the V8 power an interesting challenge but will sound wonderful!

[brittanytvr]

you can perhaps phone to this Elva owner also with a V8 if not sold?
http://www.elva.com/forsale/elva_for_sale.php?id=e...
Chris

[blitzracing]

My Ginetta runs completely split systems, not an issue. One of the Ginetta owners did run a balance pipe forward of the sump to join the two sides, and was convinced he gained about 2 mpg however!

[elvaracingroger]

Thank you Chris ... the Courier V8 you kindly provided the link to is the car I mentioned in my query and is on the official Elva website. This topic may relate to the same car (which I have seen) but I wondered if there were now two V8 powered Couriers. Your previous response appreciated. Rog