New IRTB/MS setup progress

[Miserareta]

Here is my new setup for the engine. The engine is rebuilt and ready to go in, I don't have any pics though and I just finished the megasquirt. I am using what is essentially a miata's setup with the CAS and dual coils. And a set of 38 mm throttle bodies, the manifold is made of 6061 Al and carbon, so if nothing else i am dropping some weight the whole rig weighs 2.3 pounds. They are small, but overall larger than stock, I wanted to keep this as a daily driver eventually so I am not going too crazy with the setup yet. I am working on making a 4 into 1 header for it, I don't have any pics of that yet either though.

From Carbon/6061 IRTB

From Carbon/6061 IRTB

[Turpro]

That looks like fun.

[18sOnAiR]

Are you gonna do a HOW TO? Maybe list where you got your material?

[Miserareta]

Well, it would require access to the molds for the carbon runners or cutting your own on a cnc machine out of pattern block. I can upload the solidworks models I made if anyone is interested in those, and the models for the flanges. I had the flanges water-jet cut out of 6061 aluminum 3/8 plate. The runners are 8 layers of pre-preg carbon fiber standard weave. Lay those up in the molds and vacuum bag and cook them off. I used Hysol aerospace adhesive (holds airplanes and champ car chassis' together, it should work for this.) to hold it all together. I had to use a jig when gluing to space everything together. Its about 65$ worth of aluminum and $100 or $150 in carbon(the price is high at the moment because of the shortage from airbus and boeing building a lot of new planes.) and a lot of time. The runners would change shape depending on what irtb's you went with. 38mm ones from any of the 600cc sportbikes would flow enough for a pretty much stock motor. Cams and higher compression would probably want larger ones. I welded the bottom of the throttle bodies to the plates to give me bolt on throttle bodies and avoid the whole "my intake is held together with silicon couplers" look. But that is about it. I am going to use the idle air control valve from an older bmw with the megasquirt and have it routed through the bike injector bungs on the tbs to control idle and provide a vacuum source for the brake booster. I think i have some pics from when i was laying it up and jigging it up for glue. I will post if i find

[Miserareta]

That is funny, i just looked at your sig. my Tbs came off of a kwak 636

[dave0r]

looks good

[G85]

i'm interested to see what gains the itb setup will have. i was thinking of using the intake manifold from a toyota 20valve 4age which runs a 4 throttle body setup since i couldn't find one of those mazdaspeed itb kits for the bp engine.

[FE3-323]

quite interesting.

[18sOnAiR]

I need to make a manifold like that for my toyota ae101 IRTB's

[G85]

but ideally we should try and track down this kit...

[18sOnAiR]

That doesnt work with the 99 head, plus I already have the IRTB's

[Turpro]

but ideally we should try and track down this kit...

whats the price on that kit?

[G85]

i honestly have no idea yet. i'm still trying to track 1 kit down...new or used.

[Miserareta]

That kit is really nice. I have never seen that before. That is what I am thinking of doing for an air box though. Route air from outside the engine bayy somewhere to it.

[G85]

i'm really looking forward to your finished itb project.