sidedraft 40s on my '69 2002

[dunkeroo32]

I recently had some Weber 40s come into my possession. I am wanting to make installing them on my '69 2002 a winter project. What do I need to do to my car to prepare for the installation? Electric fuel pump, etc.? I also am in need of linkage. Where's the best place to purchase linkage?

[winstontj]

I recently had some Weber 40s come into my possession. I am wanting to make installing them on my '69 2002 a winter project. What do I need to do to my car to prepare for the installation? Electric fuel pump, etc.? I also am in need of linkage. Where's the best place to purchase linkage?

I think there's a FAQ on this. You'll need a by-pass pipe for the coolant from an e21 (it's a steel pipe). Also I'm not sure if you'll have issues with your air horns with the booster but you won't with the carbs themselves. The linkage can be had from Pierce Manifolds or many other places.

There was a thread a few days ago about how to use an inertia switch from a Ford car for your fuel pump (incase you get hit or roll over it stops pumping fuel)

That's it. It could be a one day or few hours long project. Really simple. Take off the old manifold and install the new manifold and carbs. Tuning them is a different story!

Good luck!

[boxy02]

If you have all winter to do this...It should take you less than a day to install the new setup and probably the rest of the winter to understand this article (link) and tune them... 8^) FWIW, I'm doing this in the future as well (w/ a pair of Solex's).......still trying to understand the article.

http://www.tjwakeman.net/TR/WeberDCOEinfo.htm

[TobyB]

(venturis?)

If they're much bigger than 30mm then you may not have much t o r q u e...

t

[AlanM]

Alfas of the same period with 2L engines of similar HP have 32mm chokes in 40mm carbs. 30, 32, or even at a pinch 34s will all be OK with a stock M10.

Main and air jets of course would most likely be different in all cases. Generally 45 or 50F8 idles will be all right, and 130-135 main with 180-185 air corrector are a fair start, but if you have 145s with 200 airs with the carbs just suck it and see. Generally 2.5 -3 sizes in airs is equal to 1 size in mains. Small mains with small airs tend to give rich mixtures in the top end.

The M10 seems to like an F9 emulsion in all states of tune, but an F16 or F15 will probably be OK as well. F2s tend to be too rich in the lower ranges.

[Freeman]

Before you start make sure everything else is PERFECT with your motor. I thought that just because mine ran good with a 32/36 and only had 30K on a crate motor that the webers would work fine. Because of slight differences in compression I never could get them balanced and running right - after two years of effort and frustration I pulled them off and sold for half what I had in 'em. Obviously your (and a lot of other people's) milage may vary, but I'm back to the single and having fun again.

Issues you might run into - water bypass, electric fuel pump and regulator, brake booster clearance, horns or air cleaners, dip stick clearance, oil breather, linkage, synchronizing, mid- throttle transition, idle, possibly recurving your distributor... I have a pretty complete writeup if you want to e-mail me I can look for it.

They sound incredible at full song, and do make some hp, but for me it wasn't worth it.

Also, somewhere I have a spreadsheet with the different jetting recipes that about 30 or so folks were running on motors of different tune. Would give some good starting points - can e-mail it too.