Pretty easy mate BUT before you fit them sand the manifold to cyl head flanges on a piece of glass with some 400 wet and dry on the glass and some WD40. I say this as the flange isn't always totally falt and hence air leaks and poor running ensue.

They should come with a setup guide but a carb balancer will make sure they are spot on

 

Ok thanks for the advise, how do you get the old manifold out ?

 

I've just replaced my single carb with twins on my beetle and found it easier to take the engine out to remove the old manifold

 

I fitted these first with the engine out and then later on removed and refitted with the engine in place , no real issues, just remember to fit a balance pipe between the manifolds.

 

I fitted the twins while the engine was out to get the linkage set then dismantled to fit the engine and reassembled once in

...but the pain was removing the old manifold

 

Personally I'd do it with the engine out, especially in a Bay. I have Dell'orto 34s and getting to the manifold studs is a real ballache in there.

 

If it s a DP engine then there are rubber boots between the centre section and end pieces. Just undo these and maybe a support nut on the centre section and it'll all come off.

Engine out is easier but on a Bug there's enough room for most people

 

Just undo these and maybe a support nut on the centre section and it'll all come off.

I couldn't get the manifold with the preheat pipe through under the alternator so alt and fan shroud had to be loosened and lifted which is not worth trying with the engine in IMHO (don't know if you have more room though in a bus)

 

Thanks for all the replys, just had a tinker as I had an issue with lights for mot all sorted now though.

That's what I was thinking, the nuts on inlets look easier enough to get to but I can't see the manifold coming out that easy.

They should be with me Tuesday but planning a trip this weekend in the bus so will be the week after before I fit.

Out of interest what's the pipe between the 2 carbs for ?

 

Also what linkage does everyone recommend ?

Herd the standard hex bar is abit toilet

 

The pipe from the manifolds is a balance pipe. Helps with smoother running of the engine.

For a linkage stay away from EMPI unless someone says they are good cos their quality has gone way downhill since moving production to China

Otherwise, Look at all the USA vendors, all the UK vendors and then CSP in Germany. Far as I'm aware there ain't many parts manufacturers in the UK anymore but depending on your fabrication skills a linkage ain't so hard to make with proper rose joint links