4 Port Intake
12-07-10, 06:32 PM
#3
You will need to make an adapter plate from 3/4-1" aluminum. JapantoLA had some sort of adapter plate, not sure of it's application. There have been some commercially made by a rotary shop in Australia. Same group that sells the Tweak-It throttle body kit, iirc.
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12-07-10, 07:08 PM
#10
Old [Sch|F]ool
I want to do this the other way... wanted to put a later style manifold on an early 4 port.
Specifically, I bought a GSL-SE engine and I wanted to rebuild it with 12A end housings and make adapters so I could use my TII-converted 6-port N/A intake manifold... Confused yet?
There's kinda-sorta room to put the late bolt pattern on the early rear housing but not the front one. There *may* be enough room to put the early bolt pattern on the TII housings. There WILL be a port mismatch, however.
Specifically, I bought a GSL-SE engine and I wanted to rebuild it with 12A end housings and make adapters so I could use my TII-converted 6-port N/A intake manifold... Confused yet?
There's kinda-sorta room to put the late bolt pattern on the early rear housing but not the front one. There *may* be enough room to put the early bolt pattern on the TII housings. There WILL be a port mismatch, however.
12-07-10, 07:42 PM
#13
Old [Sch|F]ool
I said it was odd
The 4 port housings have nicer flow and port timing characteristics than the 6 port, which is why an N/A TII is so much nicer than any 6-port. But the S4 N/A intake manifold works a lot nicer than the TII manifold. I mated the two, and it worked phenomenally well, even after my mind cleared from breathing in all the aluminum and JB Weld dust.
I killed the TII rear end housing (horrible scoring from the rotor hitting it) but I found a GSL-SE engine and knew I could make a four port out of it using the plentiful stock I have of 12A side housings in excellent shape... but the bolt pattern's different. So I blocked off the aux ports RX-8 Low Power style and bridge ported the secondaries. Haven't run it yet. Going to play with intake manifolds on this one as well, jump between GSL-SE and S4 N/A.
Next engine is already in the planning/acquisition stages... found another 12A, this one will probably be a fullbridge with quad 48mm throttle bodies. Why? Why the hell not?
The 4 port housings have nicer flow and port timing characteristics than the 6 port, which is why an N/A TII is so much nicer than any 6-port. But the S4 N/A intake manifold works a lot nicer than the TII manifold. I mated the two, and it worked phenomenally well, even after my mind cleared from breathing in all the aluminum and JB Weld dust.
I killed the TII rear end housing (horrible scoring from the rotor hitting it) but I found a GSL-SE engine and knew I could make a four port out of it using the plentiful stock I have of 12A side housings in excellent shape... but the bolt pattern's different. So I blocked off the aux ports RX-8 Low Power style and bridge ported the secondaries. Haven't run it yet. Going to play with intake manifolds on this one as well, jump between GSL-SE and S4 N/A.
Next engine is already in the planning/acquisition stages... found another 12A, this one will probably be a fullbridge with quad 48mm throttle bodies. Why? Why the hell not?
12-07-10, 07:48 PM
#15
Old [Sch|F]ool
Oh I forgot the good part... GSL-SE center housing so I can have integral fuel injectors and mate it to the FC crossmember easily.
Never did like doing anything simple when I could do it ***-backwards. (Name that quote!)
Never did like doing anything simple when I could do it ***-backwards. (Name that quote!)
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