shortrunner manifolds?

[j933 vrd 0]

can you put a shortrunner manifold on a n/a vr? if so how come nobody does? what is involved? thanks

[Cowpatmatt 0]

you can but the problem will be the flow of air will not be the same to each cylinder.

[Phat VR6 3]

and would be slower as a result

[FishWick 21]

I ran the Schimmel Short runner on my engine naturally aspirated before I went turbo and it was no slower than stock. Better at the top end actually.

In theory, a short runner slows the gas speed down, which affects low rpm torque.... but in reality it's not always the case.

Don't judge until you've tried it ;-)

[philbatesvr6 0]

i was thinking about this the other day as well,

as the standard manifold is supposed not to flow as goof to cylinder 1 and 6,

and as it goes across the top of the engine as it gets hot and the throttle body sits almost over the exhaust manifold so it would be cooler as well been short run,

also the intake piping would be shorteer as well

[FishWick 21]

Yeah short runners are best for forced induction because once you're on boost, all the low rpm theories and practices go out the window :-)

The VAG 1.8T is short runnered, but it has a very quick spooling turbo to counter any potential low rpm lag.

Another thing with short runners is the intake plenum volume is much smaller than stock, so can affect brake servo performance, but again, in practice, I didn't find that to be the case with the SPTurbo intake.

And yep, moving the throttle to the front reduces heatsoak in traffic and also boost pipework length.

[Kelster 0]

So, what needs to be done then to fit one ? Is is as straight forward as it looks ? I assume you will need a long accelerator cable, if so how long and where from ? Thanks

[FishWick 21]

Yep, straight forward. Off with the old one, on with the new one.

The standard throttle cable works fine, plenty long enough.

The other advantage of short runners is much easier access to the cams and spark plugs.

[Kelster 0]

Excellent thx. Best get the credit card out

[VR6Pete 1,455]

What are you talking for the short runners?

[Kelster 0]

Strictly dubs are selling SP Shortrunners complete with billet fuel rail and fuel pressure reg adaptors for £750. Needs an adapter for ODB2 though for another £90.

Strictlydubs

Direct from SPturbo (USA) £550 + £45 for the fuel reg.

SPTURBO

This is all I know atm about cost as these are the only ones I have looked at so far. Have been trying to individually price up the VR6 turbo kit that Strictlydubs are advertising on Edition38 as I think it could end up cheaper buying the lot from them.