Volkszone Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
632 Posts
Discussion Starter · #1 ·
please excuse my ignorance! (not up on the mech's of flat fours, yet!)

took off the crankcase cooler, to change out the oil (which by the looks of it hadnt been done in a while!)

there is a flap in the intake manifold, which was connected by a cable that was wrapped around a small lever, a: what is that for? b: where should the flap lie when the engine is cold, open or closed, and what controls that flap?

cheers for any advice anyone can give!

jas
:coffeecup
 

·
Registered
Joined
·
8,832 Posts
No offence, but your question is misleading...

Crankcase cooler - mean the fanshroud? Or as you keep going on about the intake, do you mean th air cooler? You need to find out what you mean, otherwise the rest of us can't help you out!

If you mean the fanshroud, then why did you have to take it off to change the oil?
If you mean the aircleaner - oilbath early style - then the flaps should be closed when its cold so that hot air comes from the hot side of the engine to speed the warming up process hwen the engine is warm.

Get some pics up for us. Just one of the engine bay and then describe what you mean.
 

·
Registered
Joined
·
632 Posts
Discussion Starter · #4 ·
hey guys, no offence taken!! lol

its a 72 1200 bug, and its the oil bathy thang!

so i guess the answer is it should be closed when the engine is cold, and open when hot, (beware more igonorance coming!) how is it controlled?

cheers all

jas

(i may just stay with putting graphics on cars! and leave the engine bits up to the guys who know!)
 

·
Premium Member
Joined
·
8,812 Posts
The Air Filter (that's what it is, and the 72 1200 Beetle uses the oil bath type), has it's intake air controlled by the flap. when the engine is cold, the flap only allows warm air from under the cylinders to go in, there should be a long cardboard air pipe from near the dipstick, up to the air cleaner. When the engine is hot, the flap moves to only allow cold outside air into the cleaner. The flap is operated by a cable which is attached to a lever on the cooling regulating flaps inside the Fan housing. Those flaps, (and the lever) are operated via a pushrod attached to engine thermostat, which is mounted underneath the right hand pair of cylinders. Thermostat looks like a brass concertina about 2 inches in diameter.
 
1 - 6 of 6 Posts
Top