2002 Mechanical Restoration w/ M20 Triple Weber

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2002 Mechanical Restoration w/ M20 Triple Weber

Postby SkiFree » Mon Jan 09, 2012 4:38 am

THE BACK GROUND

This project is being put together by myself (Andrew) of Ireland Engineering (don't hate, I'm well aware of the opinions of some of those found here and on e30tech. I've worked there for over a year and a half now and love every day of it. Please keep any hate reserved for that 'Ireland UNengineering' thread I saw on E30tech while back.) This is NOT something I'm doing on the job, it is a pet project build with my free time.

My background is automotive design but am currently pursuing a mechanical engineering degree while working at IE. Jeff being an oldschool engineer is a great resource to learn from. I bought the car a few years ago and it serves as a current daily driver.

The goal is to make a really fun 'weekend warrior' car but keeping it look like the stock classy 2002 it is on the outside. I love the idea/novelty/sound of a triple weber powered M20 in a 2002. I'm not building the for big numbers, anyone can do that, simply building the funnest possible streetable setup (this goes with the suspension setup as well).


THE CAR

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Interior re-do____

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Finished. This was done a few years ago, had to sell the Nardi wheel, want one again very badly (Nardi was based out of Turin, IT and since that's where I studied Auto Design there's a bit of a personal connection)

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Engine tear down_____

Block in the foreground.
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M20 originally out of an E34

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Coolant in the oil pan, mmmmm.

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Pulled the bearings, here's a good example of what happens when you don't change your oil often enough. Worn all the way to the copper.

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Head stripped

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OEM rockers had seen better days.
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After being pressure checked and cleaned, going to be doing some mild port work. Will put up the pictures once finished.

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Going to be smoothing out the edges, as marked.

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Test fit some Rowland manifolds in a different project car next door (Groma Race Fab.) Unfortunately the manifold is not tilted (the intake and exhaust flanges are the same angle) making the DCOE's sit at too much of a rake. Anything over 5 degrees and the fuel float inside the carb will not allow fuel to fill the bowl, resulting in potential fuel starvation. Will get to break out my (slowly) growing CAD skills to come up with a new manifold.

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Playing around with some 2002 compatible header ideas.

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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Yoshi » Mon Jan 09, 2012 4:41 am

Never knew we had something against IE here. I never had much of a problem with the products. The website is kinda meh to navigate.

The build seems good. I always thought the biggest problem with the M20 was that the head didn't flow too well even if you shoved in a nicer cam and ITBs. I guess I'm wrong? Can you elaborate on the subject?
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Status: HG repair. 488wtq though!
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AustinR
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby AustinR » Mon Jan 09, 2012 4:47 am

Siiiiick.
I like where this is going. Looks good man.

Also, you're not gonna find a bunch of hate on this forum. Everybody here is pretty down-to-earth.

Welcome to e3p!
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M20_fever wrote:Austin is right.
Nsquared97 wrote:You were right again Austin!
87e30 wrote:Austin is right yet again!

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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby SkiFree » Mon Jan 09, 2012 4:56 am

The 885 head flows plenty well. The problem I see with a lot of the ITB guys is that they buy something like the Extrudabody or Dbilas kit and end up with a 45mm bore which is simply too much for all but a pretty race specific engine build . I'll be running DCOE 40's, mild 272' billet cam with a 2.9 stroker bottom end.

As for the IE comment, maybe it's just my cynicism kicking in. I like how straight forward this site appears to be. EDIT: Also agree with your mission statement.
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Nsquared97
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Nsquared97 » Mon Jan 09, 2012 5:04 am

Welcome man, this is a very cool project! I would love to do something similar someday, not build for numbers but making the car more fun to drive. Definitely keep us updated, I really want to see where this goes.
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Court M3 » Mon Jan 09, 2012 8:58 am

Damn like where this is going! Subscribed
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Yoshi » Mon Jan 09, 2012 11:12 am

KK, def like where this is going!
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Status: HG repair. 488wtq though!
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Rick » Mon Jan 09, 2012 4:00 pm

Great thread! I love it.

If you have not seen this guys website it might have some good info for you, i thought of it when i saw your webers:

http://e21jps.webs.com/engine.htm
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby M20_fever » Mon Jan 09, 2012 8:19 pm

Welcome to e3p! Sick little project you gave there, should swap swap it over to the old style distributor to stick with the old school carbs. Looking forward to updates!
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby ponycarman » Mon Jan 09, 2012 8:52 pm

Car looks great! Good work! Welcome to the forum

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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby SkiFree » Mon Jan 09, 2012 11:59 pm

Thanks for the warm reception guys.

M20_fever - You bring up a good point with the 323 distributor. Another downside to the Rowland Manifolds is that they will not allow fitment of the distributor without shortening the distributor cap (which would be ackward). Something to consider when in CAD is going to be raising the carb side of the manifold to clear (and hopefully clear a 2002tii brake booster which has a fairly small Outside diameter). I think I'll probably run a distributor-less Megajolt Jr. EDIS-6 ignition system.

Rick - Thanks for the link, some of those Australians go into some pretty in depth M20 builds. Here's a couple Australian 3.1 stroker customers...

In an E21 race car IE 3.1 stroker with 45mm extrudabody setup.
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In an E30 race car IE3.1 stroker with S54 throttle bodies.
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For my car a few updates.

Did a rebuild on my steering box. A little more compact than the power steering system you E30 guys run.

How it started.
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Exploded view, ready to be put back together.
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End result, complete with IE urethane steering coupler and cadmium plated steering coupler joint (for a bit of bling). Apparently the 2002 steering coupler works for E30 guys doing the E36 steering rack conversion.
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Also got word this morning that my suspension is done at the powdercoaters, HOPEFULLY be putting up the new front/rear subframes in this weekend.

Some before pics.

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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Nsquared97 » Tue Jan 10, 2012 1:21 am

I know this has nothing to do with your build, but what is that #5 open wheel car in your last pic?
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby M20_fever » Tue Jan 10, 2012 2:01 am

God that us some hard core m20 porn! That first one with the custom fuel rail.
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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby SkiFree » Tue Jan 10, 2012 2:33 am

The open wheeler is Jeff's little LeGrand Cheetah MKI formula 4 car, very very fun. Powered by the flat twin out of a BMW 700.

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Re: 2002 Mechanical Restoration w/ M20 Triple Weber

Postby Nsquared97 » Tue Jan 10, 2012 3:07 am

Now that is sweet! I was figuring a vintage formula ford, but that is cooler imo.
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