trogdor
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| posted on 28/2/09 at 01:36 PM |
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Success! Audi V6 now runs!
After resetting the cam timing the audi engine now runs the crank was offset from the cams by 30 degrees or so. The marker was completely wrong.
So aside from being happy that it runs there are a few issues, the exhaust still smokes after its warm so it may be water in the exhaust still or the
head gaskets will look into this but am probally gonna replace it anyway.
my biggest issue at the mo is that the crank pulley has visiable run-out ie its wobbling quite a bit certainlly more than the other pulleys so does
anyone think that this is a problem. The belts run fine etc.
Many thanks
Tom
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zilspeed
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| posted on 28/2/09 at 02:33 PM |
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For the benefit of my failing memory.
Remind us again, is it an Audi V6 mid mounted with the Audi transaxle ?
How are you running sparks and fuel ?
One could be extremely tempted by such a setup in the sports racer currently in my head.
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trogdor
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| posted on 28/2/09 at 02:49 PM |
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yip it will be, I am planning to use the audi's loom to run sparks and fuel as its not too complicated.
I may upgrade to megasquirt when i decide to upgrade the engine with a supercharger or turbos
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MikeRJ
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| posted on 28/2/09 at 03:13 PM |
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It's possible the cam timing has slipped due to the crank pulley moving on the crank, e.g. sheared location peg. It's also possible some
one has reassembled it with the location peg not in the machined cut out in the crank, which would certainly explain why you are seeing runout...
e.g. like this
[Edited on 28/2/09 by MikeRJ]
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Canada EH!
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| posted on 28/2/09 at 04:31 PM |
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Did the engine come from a wreck, damage from collision, crank pulleys sit low and are subject to ground impact.
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trogdor
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| posted on 28/2/09 at 06:56 PM |
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As far as i am aware car has not been in any sort of accident and it certainly seems fine.
I think the crank pulley for the timing belt is fine as that is not wobbling its the one in front of this that runs the accessory belt.
This bolts to the front of the crank and timing pulley and is not on straight, hence why the engine didn't run as somebody put it on one bolt
offset.
So if it is keyed to the crank this would explain the runout as the key would not be in its recess.
hope its as simple as that at least.
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trogdor
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| posted on 1/3/09 at 03:49 PM |
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Looking at the pulley today, there is no actual runout on the bottom pulley. It has a lot of vibration, seeing as its a balancer/damper for the engine
and its not on in the correct position i assume that this is the reason.
So will put it back where it should be and see if that helps.
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