This is a first gen question cause only a first gener would want to do this. Do weber 13b 4 port intakes fit on tII motors?

 

nope. Same bolt pattern for housings but different for the the front and rear plates.

 

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.

 

Last time I checked, Japan2LA and Tweakit dont have an adapter but I can get it made. On the other hand, Rene (rotary works) can add the additional injectors to the lower TII intake manifold.

 

You can also purchase a RB weber intake for ida

 

show off!! lol. at least polish it.

 

Cost wise:
Adapter $200 appx plus gaskets
RB manifold $286 + tax and shipping

 

Or buy my intake pictured for $50 less than RB and ill throw in a gasket.

 

you're a good salesman. Sales is not in my line, I cant even sell an ice to an eskimo. LOLLLLL

 

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.

 

What the?
12A housings on converted 6-port T2 intake?

 

Just curious, why bother turning a low compression turbo motor into an N/A motor?

 

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?

 

gotcha. In the beginnng, I was like "WTF" lol

 

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!)

 

I would use a TII core and S3 internals. Mazdatrix offers a bunch of intakes for IDAs but I think you have to grind the proper port. Anyone know for sure. And what does it mean that they have no facility for the break servo

 

What motor does it fit? Carb for sale too?

 

87-91 T2 engine, I would sell it with the 48ida carb