There was a slight ridge where the inner Onring sits onto the snout, but I just spent the last hour running it out. Flat now.
It only does it, if I turn it. I’m think because of the dizzy drive gear maybe? Probably be taking that out next. There are the two shims under it…
So, if the needle goes around a full circle, what shims would I need? (And why doe it go in and out when I turn the flywheel?)
If it moved exactly 1.00mm that needs shims of 0.93mm to leave 0.07mm end float. If the dial indicator value changes smoothly as you turn it going from high reading to low reading after a half turn, thats the flywheel out of true by a small amount,. According to VW Spec : max axial runout 0.30mm in the centre of the area where the clutch friction disc runs . If it steps in suddenly then you arent measuring the flywheel resting on the bearing all of the time as the bearing and the flywheel should both be smooth. You might be feeling the crank being pushed by the springs in the valve gear if they are still connected, causing the camshaft to overtake the crank for a short while and push back against you as the helical crank gears push the crank and the camshaft back and forwards in the case. But that ought to happen twice per rotation as the different cylinders go through their valve operating sequences. Dont forget to never rotate the crank with the distributor drive gear in and the distributor out of the engine -- or you will have chewed edges on the drive gear. . Take both out if you want to try turning the engine without the distributor.
Excellent. Yes. That is exactly what the guy that built it said. I rang him earlier, and he explained this to me,pretty much what you said. (Arnie Levic, Vw Porche engine builder). He kindly offered to shim it up for me tomorrow morning). Nice guy, in his ‘80’s now, but used to build racing Porsche engines. Thank you everyone for all your kind advice.Sorry about all the questions, but I just need to get it right. Heavy times here at the moment, and I can’t seem to concentrate on one thing at a time very well.
Incidentally. While he was looking at my engine, he said “Why have you got a thermostat and flaps fitted? I bet if you drove to Scotland, you wouldn’t get as far as Birmingham, as your engine will burn up! The amount of burnt up engines I’ve seen over the last 50 years of building them. Take them out”. His words, not mine…
If it’s all working I don’t get that the flaps also direct air to the bits that need it the most and the thermostat helps with warming up the engine faster to help
That would be the last time I let him anywhere near my engine. What a plonka. Obviously not as clever as he hopes you think. Sorry to say there are plenty make a living all their lives without really bothering to learn anything more than absolutely necessary and bull-Marmiteting. An equivalent would be a VW garage I went to with a rolling road. Successful business been going for decades, lots of people rate them. They don't understand how vacuum advance works but bull Marmite instead. "That vacuum advance with cause your engine to over advance and burn the pistons, it's why I take them out and fit 009 type". Sound familiar? That particular idiot obviously never wondered why the millions of vw's all fitted with SVDA distributors do not immediately explode. If that's the effort he's prepared to put into understanding what he does in general, which I'm afraid is more than likely, what ever else is he screwing up for his customers simply because "I always do it this way". Doh! There may have been an engine builder on here in the past with a similar attitude to educating himself.
Exactly. And your expert is stuck in the 70's when everyone was throwing them away because some plonka like him was quoted (probably mis-quoted) in a VW magazine saying they were bad. What's the betting that flying down the strip in your drag buggy, flaps could be useless and potentially problematic so chuck them. What starts on the strip makes it's way through "hot-street" to us poor fellows who need flaps, do not need over-rated oil pumps and springs and do not benefit from an 009 as you might if your driving style was rev the nuts and drop the clutch as you take off for a 1/4 mile drive. Gah!
..that mechanic fella must have read too many vw hot-rod magazines ftom California back in the 70s for sure..
