Weber 34 ICT installation.

[nuts4914]

Hey Guys,
I picked up a set of Weber 34 ICT's at a swap meet and they were complete except for installation instructions! Anyone put these on your 914? Can you scan the instructions and E-mail them to me? It all seems pretty straight forward except for the tube coming out the side of the manifold (see picture). I assume that they attach to a length of vacuum line and connect to a tee and that connects to the breather?? Also, do I need an insulator between the manifold and the head or will a gasket do?
I'm not real big on carburators. I would rather run the Fuel injection. But I have all the parts (ie: distributor and fuel pump) so I thought I'd give it a try.
Thanks,
Bruce

Thats for the balance tube. Just connect the intakes together with a piece of hose. No insulator needed, just a gasket will be fine.

Terry

[Dave at Pelican Parts]

Yup. In fact, you do not want an insulator between the head and manifold. You want the manifold to get nice and warm--this will help to keep the fuel atomized, which helps just about everything from emissions to power to driveability.

One of the biggest problems with the single center-mount carb (like the "Pinto Weber") is that there is no provision for heating the manifold or the intake air. So you get crappy atomization and fuel distribution.

If you're ambitious, you can add a "T" fitting in the middle of the "balance hose" and run a (small) hose to the retard port of a vacuum cannister on your distributor. If you have a distributor with a vacuum cannister, that is...

--DD

[maf 914]

Dave,

That vacuum fitting is for manifold vacuum, not throttle vacuum. Discussions on the Type 4rum indicate that manifold vacuum is not the source for distributor vacuum advance. The vacuum advance source should be the carb body just above the throttle plate. (I think.)

Mike

[Pillow]

Weber 34 ICTs are great in my opinion.

The vacuum for the dizzy should come off of the carb body and should already have vacuum barrels on them. You can use one or "T" them together for additional vacuum if needed.

The fittings off of the manifolds are a balance tube between the carbs. Use a hose to connect them, no other "t"s on this hose.

The one complaint people usually have with the ICTs is that the idle will need to be set a little higher than normal like at 1200 RPM.

The picture is kind of blurry, but if you have not go ahead and rebuild them before use... They get grimmy inside if they sit with gas in them.

[Dave at Pelican Parts]

Maf, read the note again. I did not say "advance port", I said "retard" port.

I can see how having some volume of air inside the manifolds and balance hose between the throttle plate and the advance fitting could cause problems. It might cause the retard signal to lag behind the throttle opening, which would make the engine bog down off-idle.

I guess my idea wasn't as clever as I thought, then.

--DD

[DDS]

You can get Weber rebuild parts and jets from Pierce Manifolds, Roger knows his stuff and actually provides decent service. I was tipped off by a maserati guy (sees lots of webers) that replacing gaskets and getting an accellerator pump diaphragm from UAP was all they generally needed. (After a serious cleanup)

www.piercemanifolds.com

[maf 914]

Dave,

You are correct! I need to be more observant I guess. Sorry about that.

Mike

[nuts4914]

Thanks Guys,
I have an 009 distributor for this set up but it sounds like I may want to try an 005 to get better advance. This motor is going to be my "inspection motor" so it's intentionally "mild". I have a 2.0 that I plan to rebuild after this project car is finally rolling.
I got the rebuild kits ordered. I agree, since I got these at a swap meet, there is no telling what kind of gunkus is in them! Plus, they have been sitting for a long time and the diaphrams are probably pretty hard.
Thanks again. ~Bruce