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Any gains to be had with inlet mods?
Posted: Thu Jun 13, 2013 9:00 pm
by Discopotatoes
On my twin turbo RV8 I have 71mm plenum butterfly, 45mm short trumpets and V8 developments stage 3 heads,
What would the pros and cons to a blended trumpet base be if any?
Cheers
Disco
Posted: Fri Jun 14, 2013 6:50 am
by chodjinn
You won't notice much difference if at all really. I had a custom blended trumpet base on my twin turbo, never had it running tho, but I got it more because I could rather than because I needed it lol.
Posted: Fri Jun 14, 2013 7:20 am
by r2d2hp
Anyone used the Thor Manifold on a supercharged setup as thinking of changing to a later 4.6 enging for my next build
Posted: Fri Jun 14, 2013 9:33 am
by Eliot
r2d2hp wrote:Anyone used the Thor Manifold on a supercharged setup as thinking of changing to a later 4.6 enging for my next build
Jonathan Douglas(JE Engineering) talking about the thor - taken from my manifold archive page:
'the throttle body has a 68 mm throttle as standard and again, we often take this out, in this case to 71.5 mm. The Thor manifold, when used with either a standard cam or a mildly tuned cam, gives a strong torque peak at around 2,000 rpm, much higher than that achievable with the Lucas plenum design, but even with careful gas-flow work the power is limited. We find it difficult to achieve more than around 280 bhp with this manifold, where a similar amount of effort on a Lucas Plenum manifold will yield 320 bhp (but with less torque below 3,500 rpm'
Re: Any gains to be had with inlet mods?
Posted: Fri Jun 14, 2013 9:33 am
by Eliot
Discopotatoes wrote:On my twin turbo RV8 I have 71mm plenum butterfly, 45mm short trumpets and V8 developments stage 3 heads,
What would the pros and cons to a blended trumpet base be if any?
Cheers
Disco
I would say you have a good combination and to leave it alone!
Posted: Fri Jun 14, 2013 3:00 pm
by mgbv8
r2d2hp wrote:Anyone used the Thor Manifold on a supercharged setup as thinking of changing to a later 4.6 enging for my next build
Reg!
I've been trying to ring you. Has your number changed?
Pel
Posted: Fri Jun 14, 2013 4:46 pm
by r2d2hp
Hi Eliot,
I guess that’s a normally aspirated setup. Do you know anyone who has tested it with a Supercharger to see how it performs?
Am using the standard Thor Throttle Body on my Lucas Plenum with the SC at the moment and all seems ok. Do you think I would benefit from having it enlarged.
Pel, was good to catch up
regards
Reg
Posted: Fri Jun 14, 2013 8:01 pm
by Discopotatoes
chodjinn wrote:You won't notice much difference if at all really. I had a custom blended trumpet base on my twin turbo, never had it running tho, but I got it more because I could rather than because I needed it lol.
Unfortunately I have a thing for shiny stuff and I don't always buy through necessity but cos it looks good,
May be ill give this one a miss