engine and drivetrain Solex To Weber Adapter: Screw Length?

[RAS-2002]

As I mentioned in some earlier posts, I had so many problems with my old Solex 32/32 DIDTA 2bbl on my '72 '02 that I had to ditch it and install a Weber 32/36.  The difference is incredible! 

 

To keep everything in the engine compartment looking stock, I want to use the original Solex air filter assembly on the Weber 32/36.  I found tons of information here on faq on modifying the assembly and the rubber gasket, and I picked up the Weber/Solex adapter, but it came with no screws (see attached hi-jacked pic from another bmw2002faq posting).  I know they're M6-1.0 socket/Allen head screws, but I don't know their length.  I was wondering if anyone knows the correct screw length that I'll need to order.

 

Thanks,

Bob

[Mike Self]

Your Weber should have come with four studs of the proper length to accept the adapter; failing that, simply measure the overall height of the adapter and add a few mm.  The allen screws will fit into the wells on the adapter, and the well depth plus those few extra mm will give you sufficient length to properly engage the threads in the carb.  Since the factory air cleaner's weight is borne by its brackets, all the screws do is keep the adapter from falling off. 

 

Suggestion, though...many folks (me included) discovered that using the adapter will make the air cleaner hit the hood's underside.  I ended up deplying my Dremel tool and tinsnips to modify the underside of the air cleaner, then make a sealing gasket from closed-cell foam.  Works fine and easily clears the hood.

 

cheers

mike

[RAS-2002]

Hi Mike,

I've already done the mods to the underside of air cleaner. Looks like it'll be a good fit.

And, lazy-arse that I am, I answered my own question about the screw length; looks like 40mm screws will do it.

Just gotta find some now - - - heading over to Lowe's during lunch.

Thanks,

Bob