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07-26-2015
I actually got a 4x4 4.0 '91 Cherokee off CL for $500, owner said it had a bad engine, was knocking pretty loud. Got it home, did some troubleshooting and found the crank pulley was bad (separated from the rubber, no noise with belt off), swapped it out and drove it to work for a while. Eventually sold it to my mother in law, who finished it off in a year or 2, with almost 250k on it.
07-26-2015
x2?Originally Posted by J57ltr
Originally Posted by The Sunfire Guy
07-27-2015
Wonder if the starter was hanging up?
07-27-2015
we need a mod to change the title of this thread.
it should be,
owner derps out and fails even try to investigate bad sounds, then tears the engine down. and now what?
07-27-2015
Fixed that for you.
07-27-2015
that works too. he was all to eager to rip his engine apart if you ask me.
lets hope he can put it all back together again lol
at this point a used engine maybe in order.....
07-27-2015
Here I am fighting tooth and nail trying to keep my heads on and this guy just chunks them off like a Coed during Mardi Gras looking for beads
07-27-2015
your killing me. so true tho.....lmao!
maybe hes not heard they rarely blow head gaskets?
got to admire his enthusiasm tho. dove right the f in blind as a bat lol
07-27-2015
I wonder if there's going to be a huge part out after he realizes it's going to cost him about $300 just to get them heads back on only to find out it was the tensioner all along.
07-27-2015
nah, head gaskets and new bolts under 60, lim gaskets another 40 or so. then fluids.
full gasket kits to do the whole engine and new fluids and elbows ran me just over 200 bucks.
07-27-2015
You don't surface the heads?
07-27-2015
Yeah I wouldn't bolt on a set of heads without at least a resurface, guides inspected, new seals, and 3 angle valve job. Probably new springs too while I had it all apart and doing seals anyways.
07-27-2015
they looked good with a metal straight edge, they came off a running jy engine. last owner took them off to use his heads he had already. so they got cleaned up and bolted back on. 500 miles later shes still tight and running well.
i did lightly port em, new seals, and lapped the valves too.
07-27-2015
I pulled the 181k mile heads off my black gtp, stored them in my shed for about a year, then slapped them on a l26 and ran them for 30k miles and had no issues.
Sent from A Galaxy Far Far Away
Originally Posted by The Sunfire Guy
07-28-2015
I had a non-Pontiac engine make similar sounds (as you describe them anyhow) and it was the timing chain jumping a tooth. Kinda uncommon though.
07-28-2015
Now that is pure luck, but it's dry enough where you are at that the heads won't rust solid in that time. Here if you have exposed steel it will start to rust before you can get primer on it.
Bobc455,
How, with what I would assume was a worn out timing set and have it jump full retard by a tooth still manage to keep the engine running?
Jeff
07-28-2015
As the car is going to get a top swap, the heads needed to come off anyways, and this was a good reason to get them off. I plan to pull the block out, take the front and rear covers off, and the pan next week, which should tell me what actually happened.
07-28-2015
when my ac went to crap it made god aweful noises. at first a thought it was the supercharger coupler. sometimes it rattled and sounded like rocks in a can , sometimes it made a grinding noise. then i seen the metal shavings on the ac pulley , so i yanked the compressor and put in an ac pulley delete...no more noise.
07-28-2015
well now you can just look for a sc engine instead of a true top swap. if you cant find one get the new n/a block.
07-29-2015
I plan to go N/A with a top swap anyways, I have a PCM from intense with a custom tune on it.
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