!!!!!Caution M20 porn inside!!!!!

[Garageaholic]

Ely,

I wouldn't expect anything less from you. You're doing great. Keep us updated with pics!!

[rs4pro3]

Ok, just got 8' of aluminum pipe for making the runners today. Just waiting on the large pipe for the plenum to put it all together

[rs4pro3]

Ok plenum fabbed up. I used some aluminum brazing rod to connect the runners to the large pipe, and got a good solid connection on 3 of them, but the other 3 popped loose so I doubled everything up with a layer of JB weld also. Just waiting for the epoxy to dry, then I have to sand it all smooth, prime and paint it tomorrow.
Doesn't look so pretty right now, but should clean up nicely once it's painted
Only thing I have left to do is mount the air temp sensor and figure out the throttle cable
And I'm thinking of hacking some plastic motorcycle velocity stacks up and mounting them inside the plenum at the end of each runner.

[Teaguer]

Looking good .

Are you not using a brake booster on the car this is going on ?

[rs4pro3]

nope going manual brakes. Already have the brake pedal modified to increase the leverage ratio ;)

But I could go with a hydraulic booster setup easily, and have most of the parts to do so.

[So Live]

Wow dude, thats doin work right there. I think the velocity stacks would be a good addition.

Do you think your gonna have any cylinder filling problems with the one size pipe plenum getting air from the front? (i dont have the slightest when it comes to intake manifolds)

Im impressed how it came out with the tools your using.

When is somebody gonna get this dude a TIG machine?!

Keep it up!

That m20's going to look puny in the engine bay!!!!! Its so short!!!!

[rs4pro3]

with forced induction it won't be a problem, with N/A it possibly could.

I have enough material to build a second plenum so if this one works how I want. I'll replicate it but get it TIG welded:D

[Tarn]

Did i miss the idle bypass or have you yet the make it??

[rs4pro3]

idle bypass? I no longer have an ICV at all. The idle speed on these is controlled by a small bypass screw on each throttle body.

[CorvallisBMW]

Wow, that is awesome! Keep us updated, I can't wait to see how it turns out

[skatebline]

That is some amazing work!
Im sure that will give off a beautiful sound.

[Intro]

Nice work man, JB weld comes in handy alot lols.
you might have better success if you rounded the runners into the plenum to be flush with the plenum, better transition.

[4ce30]

Heck yes bra... make some more of these!! hah...
-Brandon

[Justin B]

Nice work, Ely. I like to see the DIY ITB set ups, especially since I plan on doing one myself eventually, whether completely DIY like this that requires lots of fab work, or buying real automotive throttlebodies from a manufacturer and still building my own system.

I noticed there was a manufacturer posted a little while ago, but has anybody looked at www.jenvey.co.uk ? Those things look AMAZING. Check out the trumpets too, available in CF. Oooh :D Of course just the throttle bodies would cost more than what could be otherwise put into a complete set up scratch built like this.

Looks good though, keep us updated as usual.

[rs4pro3]

Nice work man, JB weld comes in handy alot lols.
you might have better success if you rounded the runners into the plenum to be flush with the plenum, better transition.

Well I wanted a protrusion to which velocity stacks could be later added on to