Carb/manifold question

[Scottjeffrey]

I removed the weber 32/36 DGAV today from my stock 1974, desmogged '02. It looks to me from the indentations on the base gaskets (on top and below the spacer) that the manifold opening should be a bit larger. The car ran good but I am wondering as to what kind of difference is obtained, if the manifold is modified as I am thinking it ideally would be. Of course I may be wrong. I'd like to put the new or rebuilt car back on without removing the intake manifold and am wondering what the real difference is. Than you all.

Best Regards,

Scott

[xr4tic]

The gasket oval has a bigger end and smaller end for use with the 32/36, looks to me like they installed  it backwards.

 

As you found out, as long as the throttle blades aren't hitting, it will run just fine.  You may leave some HP behind, but if you don't want to pull the intake manifold, then there's not much you can do.

 

I have a Weber 38 and decided to opened mine up:

[Scottjeffrey]

1 hour ago, xr4tic said:

The gasket oval has a bigger end and smaller end for use with the 32/36, looks to me like they installed  it backwards.

 

As you found out, as long as the throttle blades aren't hitting, it will run just fine.  You may leave some HP behind, but if you don't want to pull the intake manifold, then there's not much you can do.

 

I have a Weber 38 and decided to opened mine up:

 

Hi John, Thanks for the reply. Seems you have it right about the gasket being installed backwards. I guess not matching the manifold exactly is as you suggest, paid for in horsepower though apparently they can 'run fine' nonetheless. If only I had a garage, lol. I hope you are happy with your 38. I have read many good things here about them. Best Wishes - Scott

PS. Do you know if there should be a paper gasket above AND below the spacer?

 

Edited September 14, 2019 by Scottjeffrey

[xr4tic]

There should be a paper gasket on both sides of the spacer.

['76mintgrün'02]

I opened mine up with the manifold in place, after stuffing the ports with rags.  I also put a sheet of cardboard over the engine, with a cut out for the intake.  That way the little aluminum shavings did not wind up stuck to every oily bit in the bay.

 

Once it was opened up, I made my own gasket, with holes port matched to the carb and intake; instead of using the oval shaped one.  No spacer for me, I need clearance for the filter.

Time well spent, imho. 

I also believe in smoooth air entry into the carb mouth using the stock air cleaner (which snorkels in cool air).

23 hours ago, Scottjeffrey said:

I am wondering as to what kind of difference is obtained, if the manifold is modified as I am thinking it ideally would be.

 

The Truth is in the details.

Might as well make it fit, I say.  Unless you decide not to care, that is.  Your call, of course.

Tom

 

 

[Scottjeffrey]

Beautiful, Tom!