4x4Wire TrailTalk

Something went bang!

Posted By: 87CanadianRaider

Something went bang! - 04/11/19 10:18 PM

Well I put a few monthis of work into my 88 montero last fall, trying to do as clean a build as I could to make it pass safety here in Ontario. Ran great all winter as my plow truck, and I was looking forward to getting her out in the bush. Kids were excited too. Until today! I hadn't really taken it far from home over the winter so today giving it a good run on the highway, I was going up a rather steep hill ( read: screaming along at almost 4k on the tach) when BANG. then she sounded like a diesel till I got to the side of the road. she started 2 more times but couldn't run under load and then nothing. wouldn't turn over at all.
Towed the girl home and now I cant budge the crank with a bar. It ain't looking good. time to go back to the garage for the post mortem.

Sheldon
Posted By: Bigshankhank

Re: Something went bang! - 04/13/19 03:59 PM

Best of luck to you, had much the same thing happen in my wife’s Jeep TJ. Turned out to be a warped cylinder head, but luckily parts availability for the Wrangler is slightly better than the Raider/Montero’s.
Posted By: rxinhed

Re: Something went bang! - 04/13/19 08:12 PM

There are so many places to start, but the 2.6L is notorious for crank and rotating-mass failures following episodes you describe.
Posted By: Tuxedo_Ranch

Re: Something went bang! - 04/14/19 11:35 PM

Best of luck to you Sheldon.

I wish I knew more about them and could help, but you've been a member for quite a while and I'm sure you know more than me.

Hope you get it running again soon so you can take the family out exploring in it.
Posted By: 87CanadianRaider

Re: Something went bang! - 04/15/19 02:15 AM

Thanks guys, the garage is cleaned out. time to pull it down. not sure where I'd find another 2.6 near me if it come to that. i really don't wanna do the vortec swap.
Posted By: chadzeilenga

Re: Something went bang! - 04/15/19 04:04 AM

Saunders in Thorndale has one. 1-800-265-0369
Posted By: 87CanadianRaider

Re: Something went bang! - 04/20/19 06:59 PM

well put a scope down the chaincase to find no teeth left on the silent shift gear. Thoughts? worth the repair?, do a delete kit? Guess I better take it apart to really tell.
Posted By: Tuxedo_Ranch

Re: Something went bang! - 04/21/19 04:31 AM

How well do the “silencer shaft” delete kits work? I’ve seen them online but is it something that’s good for the engine?
Posted By: 87CanadianRaider

Re: Something went bang! - 04/21/19 02:46 PM

I think the general consensus is to keep the silence shafts if you want to keep all your fillings. it'll all depend on how the bearings are in the block.
Posted By: Tuxedo_Ranch

Re: Something went bang! - 04/30/19 12:27 AM

So what's the diagnosis? Have you had a chance to tear it down yet?
Posted By: 87CanadianRaider

Re: Something went bang! - 04/30/19 03:12 AM

sadly I haven't pulled it down yet. I've been busy with flood season here. When the dust settles I'll check it out and keep you posted!
Posted By: 87CanadianRaider

Re: Something went bang! - 10/09/19 10:44 PM

Ok so I'm a procrastinator. With snow on the horizon am getting back to business.
Things dont look good. I pulled the front case to find the silent shaft sprocket toothless but both shafts and oil pump spin smooth as silk. I can rock the top end a little, but the crank spins VERY stiffly with a pipe. I'm pulling the pan now to check further bottom end damage.
I'm really confused as to how I spun the sprocket. all guides look good and tension was up when I took it apart.
I'm guessing once the silent sprocket dies, so does the oil pressure and a bearing or two will follow...
Anybody got a line on another 2.6??
Sheldon

update: took caps off. all were cooked and #2 rod bearing was welded on good. So yes, gonna have to find another 2.6....... rare as Hens teeth in these parts
Posted By: rxinhed

Re: Something went bang! - 10/16/19 12:02 AM

Sheldon, I have a core 2.6L from an 89 Mighty Max that could be available. Trip from NorCal may be $$.

Yes, oil pump driven from same chain.
Posted By: 87CanadianRaider

Re: Something went bang! - 10/16/19 11:08 PM

Thanks I appreciate it. I think I'm gonna do a rebuild. my block is ok, need new crank. Rock auto is gonna love me. Also I live right across a river from Michigan so I get my rock auto sent there and pick it up. The crank is the only pricey part when you add in the core charge.

I'm still puzzled how it happened though. no teeth on the balance chain sprocket on the crank but both balance shafts and oil pump spin. and all my bearings are scrubbed. How did I lose teeth? It seemed to be up snug on the adjuster. Not that it matters much now lol.

any suggestions on the rebuild are helpful. ie copper head gasket and ARP studs etc.

Thanks
Sheldon
Posted By: rxinhed

Re: Something went bang! - 10/19/19 07:53 PM

ARP studs, Fel-Pro Starion head gasket, keep the balance shafts, Clearwater head
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