VR6 Short manifolds

[MarkGolf 0]

Just wondered, I came across a few of these manifolds on ebay, I know they are normally used when doing a turbo conversion but can you use them with an N/A and S/C VR?

 

 

 

 

I personally can't see why they can't be used but then Im no genius...

 

I'm quite up for trying one out if no one really knows!

 

I want to buy a schimmel but with a retrim and apartment coming, cna't afford one!

[antonio_b12 0]

im gona try and do my own mani,

 

should look like the last 1...

 

i want a schimmel too...

 

but not willing to pay that much..

 

and yea they can be used, but not sure on the ISV yet..

[dr_mat 0]

Short manifolds are usually only used with forced induction. You need a nice long manifold to produce good torque, so without the s/c or t/c you might find a short manifold leaves you somewhat wanting more, unless you drive everywhere at 5500 rpm ..

[Kevin Bacon 5]

I've run mine n/a with a schimmel and it's fine. Everyone says it kills the torque but properly designed ones don't. With the throttle being so close to the head, response is instant.

 

Bear in mind a VR6 no longer sounds like a VR6 with a short runner because you've taken away the induction impulses that make the familiar VR warble sound. Short runners sound dull...... but they have a massive flow advantage.

[dr_mat 0]

Well, I guess everyone *assumes* it kills the torque, because we're taught that you need nice long runners to generate good low rev torque .. but I doubt many people have actually tried it ..

[double-6s 0]

What does it sound like Kev? More like a straight?

[eatthis 0]

if it meant it sounds poo id keep the stock manifold just for that reason hehe

[Kevin Bacon 5]

The schimmel gives a very linear torque curve. It doesn't swell up and come down again like stock and Schrick mannies do, just a nice flat line all the way up.

 

Hard to say what it sounds like tbh, it's very non-descript. Just kind of rumbles along with a bassy, authoritive thrum....

[GazzaG60 0]

i think the length of the runner must reduce low end torque somewhat.

 

anybody know the optimum length for VR runners? must be a science wizz somewhere.

 

a general rule is try to make the plenum at least the same capacity as the engine.

[dr_mat 0]

It's more about the ratio of length of runner to it's diameter. Look at the VSR/VGI. That works by creating two narrower inlets for each bank of cylinders and using a standing wave, a resonance in the air to boost mid-range torque.

[MarkGolf 0]

Umm, quite sad but Im actually a bit put off at the thought of loosing the VR noise, especially since I haven't even run the Golf with the VR lump as yet...

 

That aside, im quite tempted to go for this until my house/porsche purchase has settled down (then schimmel)

 

 

Seems to be the best of the bunch on ebay..

 

May even make one like this out of a normal Golf 2.8 mani..

 

 

Just not to sure....

 

Would like to see figures on the dyno of the differences between a short intake against a normal corrrado intake..

 

Thanks

 

Advice and info still appreciated...

 

(Recommendations on TB wud be good too)