Thread: GEMS intake trumpets

Are you after torque or power?
Peter (mechanic2you) fitted longer trumpets along with a plenum spacer in an attempt to alter the torque curve.

Originally Posted by Scouse

Are you after torque or power?
Peter (mechanic2you) fitted longer trumpets along with a plenum spacer in an attempt to alter the torque curve.

A little more of both would be nice but i think i would be happy to sacrifice a little power for more torque

Did the longer trumpets and spacer make a difference?

Steve

Originally Posted by TheTree

Did the longer trumpets and spacer make a difference?

It made a difference but not the difference he was looking for. He's gone across to the 'othor' side now.

Hi

I think the ATC trumpets are much more likely do do the business since they have been professionally designed and tuned

I think the taper is the key, they would provide a higher air density at the point where it enters the manifold

Steve

And they'd also have the same intake velocity into the head, so your not going to loose torque.

I wonder how thick the thermal gasket is (if it's designed to raise the plennum chamber? ) as it's already touching the under bonnet lining.

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Originally Posted by TheTree

I think the ATC trumpets are much more likely do do the business since they have been professionally designed and tuned

I'm not sure on the exact design of the trumpets Peter has but they were supplied by Bruce Davis (along with the plenum spacer) so you'd think they'd have been well thought out.