I've found a local '81 Rabbit pickup for $300, but the ad says it's "jumped timing". I know incorrect engine timing can cause head damage, but is that always the case? Can the belt slip a little and cause rough running, without bending valves?
I'm hoping I get lucky and the injection pump is just out of time. I searched for "head rebuild" and didn't get anything. What's the cost if I do it myself?
The guy spelled it "Volts Wagon," so I'm assuming he doesn't know his way around the 1.6.
-Cale
IIRC one tooth on the cam sprocket can cause things to hit.. It is possible that the cam sprocket could have slipped slightly as they are not keyed.. Best scenario is it is just the pump timing.. I would do some investigating before running the engine..
If the rest of the truck is decent $300 ain't bad even if it does need major head work.. I'm lazy so I've never actually redone a head myself, but the last one I had done was bit over $300.. That was straightened, resurfaced, new exhaust valves & all guides, seats and intake valves ground and valve lash set... Ready to install!
One other thing to keep in mind too.. If that '81 has it's original engine it'll have the dreaded 11mm head bolts.. Check this out for more info
http://www.vwdiesel.net/forum/index.php?topic=21948.0
As stated, one tooth can cause some collision. Mine slipped one night and was about a tooth off; I got it started, but heard some clashing. Retimed, and it runs fine... I consider myself lucky.
-Todd
If that '81 has it's original engine it'll have the dreaded 11mm head bolts..
Yeah, I'm aware of the design. My current daily driver is a 1981 diesel Rabbit, complete with 11 mm head bolts and everything. They're only dreaded if you want to put a turbocharger on. Otherwise, they've been adequate for the last 29 years.
Excellent car, and a good year too!!!
Although the 11mm can be as equally dreaded without a turbo.. Seems like one will hold together forever, and the next one is trashed if you look at it funny...