Update on my Multi throttle project.

[rs4pro3]

Charlie: you got to remember this is the first one I've made. Sure i'd want to do that on the second or third.
Thank you so far to anyone who has given any suggestions.
I'll try to start thinking of ways to make an Air box. I could convert the car to Hydro brake booster setup but I'd rather not If i don't have to. Does any body know of a company that sells a One inlet one out let Coolant Thermostat? The 318i Themostat would work but it has two outlets where as I just need one outlet.
I need to go out an install a spair heater core as it looks as if it is going to be a tight fit between the bottom of the throttles and the two pipes coming of the heater core.

[randomtask37]

If we let the critics of the world dictate our plans, we'd all still be walking on hands and feet, banging sticks, and running around naked without fire. :roll:

It has plenty of potential with time and ingenuity anything can be accomplished

im thinkin the same thing. i say GOOD JOB! and keep trying whatever u can to get that thing to work right. and i also say do it as cheaply as possible! becuase when u finnaly do get it to work right it will be that much more gratifying.

[modifiede30]

Ely, use a small sized hole saw on the drill press. It will take out a complete circle and if you use the right one, it will only require minor sanding to port match. Also, the suggestion earlier to use a thinner plate is a good one, since it will alllow you to attach the air box to the last tb. Otherwise, you'll end up restricting air flow to the last cylinder since the turbulance will not be equally distributed.

[rs4pro3]

I thought of that but none that I say had a large enough cutting depth. I'd get about half way threw and the aluminum would hit the top of the hole part, so I just went with the drill bits. I only have to drill out the last three opening for the ports on the m20 side then I'll start smoothing it. I still Highly doubt I could use a smaller plate as it would reduce the amount of coolant that would be flowing off the head. I have a pretty good idea worked out in my head for the airbox and it shoule evenly distrubute the air with around the same turbulence to each throttle. I started to draw the airbox last night in Auto-cad basically there be a flange that will bolt onto the end of each throttle then an elbows on the rear three bending upward and an elbo ont he first three bending down ward, Then I'll use a cylindrical 2 inch diameter hollow tube that will run with a ruffly 20 to 30 degree downward angle towards the front of the engine. I could run some 90 degree bends straigth up and use a small diameter cylinder to feed air, but the cylinder would litterly be pressed right up against the bottom of the hood. Of course then I cut cut a very small opening into the hood and funnel cold air directly to the throttles. Some time next week I'm going to go down the road to a plastic supply store and see what they have.

[RedBaron86325]

Keep doing what you are doing. Don't let any negativity get to you. The first one of anything you make won't be absolutely perfect. Just do what you can do with the tools at hand. You can do a lot with a little (a little patience and a little inginuity). For me, the fabrication is the fun part. Figuring out and working around the problems that arise will make you a better fabricator/problem solver on future projects. When you expect little, the results are quite an acheivement. Your project will be a success whether it works or not. Anyone can bolt on catalog mods; but, few have the confidence to attempt to create something difficult or different. Just because it isn't tagged Hartge or Alpina doesn't mean it can't be done.

[modifiede30]

I ran into the same problem with a speaker build project not long ago and found that when you run out of room with the hole saw, flip it over and the guide hole is there from the center drill bit. You'll get an almost exact match when the other half is drilled out. A little sanding and you'd be done.

Let me know how the thing runs once its done. I may try one if I can get the parts without the wife finding out.

[rs4pro3]

Thanks guys, I didn't think about that with the hole saw, to late now. If you do make on it would probally be easier to use three side draft carbs that have been stripped down. Right no I could tkae a manifold I cut up and weld some side drafts carbs to them and I'd be pretty close to done but then there is so much more to figure out like linkae, Idle valve, and tps hookup.

[Charlie]

I applaud the effort, but no offense man, I don't think you've planned any of this out at all.

I can't see how you're going to fab up a manifold that is going to clear the booster and be anywhere near efficient. At best, it looks like a bad angle, at worst, its going to flow a lot worse than a stock manifold.





This should give you an idea on how to angle it, the problem is, your throttles are much longer and make it very difficult to angle in the main box.

This BTW, is part of my plan on my m20 build.

-Charlie

[rs4pro3]

Thank you very much for the pictures, I'd never actual seen the Diballis or BMP unit on an engine, Diballis doesn't have any pics on there site. Just curios where did you find the pics? any more?
I haven't planned it out any as it is somewhat hard to plan out. I could sit down and take lots and lots of measurment and start designing something. as Dibalse made there throttle around the measurments. There was on comany I found that made webber stlye bolt on throttle bodies that would fit in with no problems but they were around $500 a pair.

[Stu]

Ely, I commend your effort for making a custom 6-throttle setup, and it looks like you're getting pretty involved in it.

I would like to comment on the angle of the throttles though. Since, as you know, M20 heads have a very steep angle where the stock manifold meets the head ports, you may want to design an adapter that will point the throttles downward. You'll notice that the Dbilas plenum sits very high with the throttles positioned downward, which is what you want for optimal head flow.

Just something to think about.

[Charlie]

Thank you very much for the pictures, I'd never actual seen the Diballis or BMP unit on an engine, Diballis don't ahve any pics on there sight. Just curios where did you find the pics? any more?
I haven't planned it out any as it is somewhat hard to plan out. I could sit down and take lots and lots of measurment and start designing something. as Dibalse made there throttle around the measurments. There was on comany I found that made webber stlye bolt on throttle bodies that would fit in with no problems but they were around $500 a pair.

I've gotten all the pics off of the e30.de site, there's a few discussions on there as well. The BMP unit is the dbilas setup, just rebadged.

Few more:







-Charlie

[Rob]

wow, you plan to actually put that on your car? No offense, but that looks downright horrible. There's a reason aftermarket ITB setups are $2500+

[UNHCLL]

Guys, for shits sake....

I hold more respect for Ely for TRYING to CREATE and SOLVE this problem on his own than I do for the guy who went out and dropped $2500 on a damn intake from BMP/Dbilas.
So what, right now its not pretty. Big deal, beta versions never are. Only difference is this.... he isnt a manufacturer who can create this in a secret back room and only reveal it when its honed to perfection. He showed us his work to gain some tips, suggestions, and support. Give it to him. Dont cut him down because you cant imagine doing this yourself and your to jealous.

Ask the creator of the CF hoods for these cars, did they come out perfect the first time? Fuck no, it takes time, tweaking, and problem solving. Do you think Jim Conforti picked some arbitrary numbers, plunked them into the chip and said Voila! ? Nope. Do you think Eibach said, "ehh just roll up some metal rods and we'll sell them"... nope. I wont continue with examples as they are monotnous and repetative.

With the exception of a few, let me remind you the E30 is a cheap ass car that any moron can pick-up. You dont own a 250gtb Quad Cam, or a DeTomasso Pantera.... accept that and give him some due credit for his work.

There I said whats been irking me. Got issues with it, please by all means PM me. I'll be more than happy to discuss the virtues of view points. Criticism is a part of the board, yes.... but plain old throw it down and stamp it into the mud remarks arent necessary.

[OreoGaborio]

......................... WERD 8)

[RedBaron86325]

Looks like 'remote' brake booster time, similar to e34 530i.