20v Trumpet Question

[Mr Revhead]

iv come across that in many many places asweel.

which means those ones n the KP above are not the best....


wasnt there another thread on here recently with info on the radius needed etc?

[gasman]

47mm wide at throttle body side and length is about 50mm i think

[Caribeena]

Just been speaking to my partners dad who races in the muscle car seies and he said the same thing about the air coming from behind the trumpet and around the side.
interesting what some people know when you ask haha, he saw me looking at this thread .....

[Mr Revhead]

that would also explain why 3 and 4 inlet trumpets in the 3S-GT are quite close to the inside of the manifold, to allow more room behind....

[gasman]

that would also explain why 3 and 4 inlet trumpets in the 3S-GT are quite close to the inside of the manifold, to allow more room behind....

never seen this before, got pics?

[QikStarlie]

simple test, sick a bellmouth on the end of a vacuume cleaner. see where the air comes from.

interesting post here, look at the images about half way down, about flow into tubes:
http://forums.fastfours.com.au/viewtopi ... ake+tuning

if the air does come from behind. it isnt going to be of much use to you. unless you have a proper full round edged bellmouths,like in frost's post.
so your average bellmouth, should be better with a flat plate behind them. if thats the case

the kp's setup is all about helmholtz, the downfalls it has are outweighed.

[Mr Revhead]

that would also explain why 3 and 4 inlet trumpets in the 3S-GT are quite close to the inside of the manifold, to allow more room behind....

never seen this before, got pics?

nope... it appears i was thinking of something else!
just looked at the pics i have, and they dont match what was in my head!

[78ke30]

found these on the net


http://www.tweakit.net/shop/product_info.php?currency=NZD&cPath=57_49_124_140&products_id=6434



Toyota 4AGE Small Single Port 100KW engine - Dual Weber Manifold
http://www.tweakit.net/shop/product_info.php?products_id=450



http://www.tweakit.net/shop/product_info.php?cPath=57_49_33_153&products_id=238



EFI Hardware Quad Throttle Body Kit - Toyota 4AG, 4AGE 16 valve only
http://www.tweakit.net/shop/product_info.php?cPath=57_49_32&products_id=112



http://www.tweakit.net/shop/product_info.php?cPath=57_49_32&products_id=121