Date: Wed, 3 Jun 1998 09:37:00 -0700 From: rubidiumnopsamdnet.att.net (Jim Collins) Subject: Re: Did I ruin my Engine ? Timing chain replacement off two teeth....
In article <3574177E.90ED00Bnopsamst.net>, chobbsnopsamst.net says... > I doubt that any damage occured. You may have a valve that needs a little > adjusting. might as well do all of the valves. > > CH > > > Jim Collins wrote: > > > I replaced my timing chain on my 89 900T and got it back together two > > teeth off (cams were advanced about 25 degrees from the crank). As I fed > > the new chain in, I didn't feel any valves hitting (turing crank with > > wrench), and then, after replacement I unhooked the ignition and cranked > > it until the oil pressure came up. Once I hooked up the ignition and > > started it, there was this noisey clacking noise coming from the head. > > Still, turning it over with the started and disabling the ignition showed > > no obvious signs of additional load on the starter. > > > > After pulling the valve cover and checking the chain timing, finding out > > what a stupid mistake I had made, correcting it and starting it up again, > > it seems to idle and run fine (I haven't driven it yet), but it has the > > noise of bad lifters (louder than normal clicking, not the injectors). > > > > My question, do you think I bent half the valves, (how would I determine > > that)or do you think I damaged some lifters and they're stuck (and how do > > I determine that)? > > > > THanks for your help. > > > > Never work till 2:00am just to get a job done, JC. > > I want to thank all of you who have written to me...It ended up this way.... After letting the engine sit for a day, restarting it and running it for 15 minutes, all abnormal noises went away. Evidently the valves (this is a 16 valve) DID hit the pistons , but not so far as to bend any. I think the collision compressed the lifters farther than normal causing them to stick temporarily. I also checked with Scandia Autosport here and they acted like that was no problem either. I sure am happy to have not damaged the engine. JC > > What kind of range do you think this repair will be ? > > -- > > Jim Collins > > Issaquah, WA > > (206)817-3102 > > > > -- Jim Collins Issaquah, WA (206)817-3102
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