View Poll Results: Which intake manifold flows more
87-88 TII intake manifold
2
40.00%
89-91 TII intake manifold.
3
60.00%
Voters: 5. You may not vote on this poll
Which Intake Manifold flows more?
#1
W. TX chirpin Monkey
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Which Intake Manifold flows more?
I have an 89 TII motor with an agressive street port..i also have a 87 and an 89 TII intake manifold (w/ throttle bodies) SO ....before i place them into my engine bay i would like to have them ceramic coated, both for looks and to insulate against heat a little bit. So which one flows more..........in the end it will be extrude honed, but that wouldn't happen for another year or so. Please help me out with this. thanx
Last edited by fastrotaries; 05-22-02 at 03:26 AM.
#5
Rotary Motoring
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I compared my S4 and S5 lower intake manifolds side by side and concluded the S5 has slightly larger runners. Thats what I modded.
Why extrude hone? Thats great for manifolds that are convoluted and impossible to finish w/ die griner. I polished my S5 lower w/ 10" rod split for emery cloth in a die grinder- the runners are a straight shot. Remember to rough out below the 2ndary inj. to avoid excessive mani whetting.
I am using S6 upper, which can be polished w/ die grinder as well since its runners are pretty straight. 2nd gen upper isn't so easy, I guess...
Why extrude hone? Thats great for manifolds that are convoluted and impossible to finish w/ die griner. I polished my S5 lower w/ 10" rod split for emery cloth in a die grinder- the runners are a straight shot. Remember to rough out below the 2ndary inj. to avoid excessive mani whetting.
I am using S6 upper, which can be polished w/ die grinder as well since its runners are pretty straight. 2nd gen upper isn't so easy, I guess...
#6
W. TX chirpin Monkey
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Thanks BlueTII......Anybody body else have any more thoughts.....? Wow this is the first thread that i've started that hasn't gotten into some sort of flaming.
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