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ALZR1
06-30-2014, 02:46 PM
Here is my next port roughed up as it and it still measured 300CC I hope to have it ready by next year.there's A lot of welding involved.


AL.

LGAFF
06-30-2014, 03:21 PM
I thought everyone decided Siamese did not work as well as standard porting????

LGAFF
06-30-2014, 03:23 PM
http://www.zr1.net/forum/showthread.php?t=14186&highlight=siamese

ALZR1
06-30-2014, 03:32 PM
I thought everyone decided Siamese did not work as well as standard porting????

what do you mean everyone decided,I didn't know this was done on A big cube motor.Not only will the heads be siamesed but also the injector housings and the plenum.

AL.

Kevin
06-30-2014, 03:38 PM
I thought everyone decided Siamese did not work as well as standard porting????

I'm not sure there was ever a consensus about it.

LGAFF
06-30-2014, 04:10 PM
Todd vs Kevins flow test


Here is the data I have for mine and Kevin's induction system. These are loss percentages. Higher loss = lower flow. This is a loss compared to each of our cylinder heads with just a clay radius, nothing else.

http://i1036.photobucket.com/albums/a441/tpepmeie/400lift.jpg (http://s1036.photobucket.com/user/tpepmeie/media/400lift.jpg.html)

http://i1036.photobucket.com/albums/a441/tpepmeie/450lift.jpg (http://s1036.photobucket.com/user/tpepmeie/media/450lift.jpg.html)

http://i1036.photobucket.com/albums/a441/tpepmeie/500lift.png (http://s1036.photobucket.com/user/tpepmeie/media/500lift.png.html)

LGAFF
06-30-2014, 04:12 PM
I will be curious to see your results Al...I am running a Siamese setup on my car...however the neck running into my valve bowl is pretty small compaired to what others have. Still need a tune also

FU
06-30-2014, 04:22 PM
what do you mean everyone decided,I didn't know this was done on A big cube motor.Not only will the heads be siamesed but also the injector housings and the plenum.

AL.

You go get it Al !