HELP PLEASE! I'm stuck in the wilderness with a dead fxj80

[Dragos80]

Yeah! What NANCY said.
The chain was my second guess, right behind broken cup holders.

 

[SmokingRocks]

I've always had the impression that an interference engine meant the pistons could contact the valves if not kept in time.

ha yup I meant a noninterference engine. Guess I typed in a rush and didn't reread it.

 

[foeix]

Great, one more PM item to lose sleep over...

Glad you found the issue in the comfort of your own home!

 

[Qball]

Wow that's is the last thing I thought it would be.

Road trip would be very fruitless as NO ONE carries a timing chain.

 

[Dragos80]

Wow that's is the last thing I thought it would be.

Road trip would be very fruitless as NO ONE carries a timing chain.

Speak for yourself. I always do.

 

[LS1FJ40]

My money was on the Head Gasket...

 

[6894kevin]

daum

 

[NLXTACY]

Yeah! What NANCY said.
The chain was my second guess, right behind broken cup holders.

Right?!

 

[70Cruza]

WOW...........im like ...................WOW.............I can sleep now!!!!!......well good luck with the repairs!!!!!!!!! Still waiting on seeing any other details or carnage you find In there. thanks a lot for updating and sharing.

 

[bloc]

Double check your Cam Chain Sprocket.. look for the timing marks on front.

When I got my 94 someone had installed the sprocket backwards.. which retarded the cam timing slightly.. but possibly more relevant to your issue it misaligned the chain a bit.

 

[packetstormin]

When my hg was done there were missing teeth on the sprocket. I had like 230k on my engine at that point.

I wonder if it would be prudent to start doing the timing chains on these rigs as pm.

 

[justbecause]

How many thousands of 80s go 300k miles with no issue?

One has a chain snap after playing dukes of hazard and now it should be considered standard pm?

 

[alia176]

I can see CruiserDan being inundated with timing chain purchases!!!

Good find Bryan, thanks for the follow up. I guess the front cover has to come off for the new chain install? Here are some pics from my engine rebuild project.

 

[Howard705]

For future reference- they will crank very strangely with broken chain- just pumping some air with some pistons- not compressing- blowing through intake spinning freely-etc.

 

[Pin_Head]

Look at the bright side: You get to do the head gasket while you are in there.

 

[bryanb]

Look at the bright side: You get to do the head gasket while you are in there.

a preventative HG replacement? is that necessary? I have heard lots of talk about HG failures... are the factory ones weak? What do you replace them with? will I have to get the block and head decked?

 

[alia176]

a preventative HG replacement? is that necessary? I have heard lots of talk about HG failures... are the factory ones weak? What do you replace them with? will I have to get the block and head decked?

I did a HG replacement as a PM and the usual #6 area was beginning to fail. When you have two dissimilar metals with two different heat expansion/contraction rates, the HG takes a beating. Toyota improved on their HG design and construction so that's what most folks go with. Of course, you have few aftermarket HG choices as well.

You don't need to do HG at this juncture if you don't want to. But the front cover removal may have to be removed for the timing chain installation, unless you can get creative and fish the chain around the bottom sprocket some how.

 

[bwakeling]

glad you got it sorted out!

 

[george_tlc]

I did a HG replacement as a PM and the usual #6 area was beginning to fail. When you have two dissimilar metals with two different heat expansion/contraction rates, the HG takes a beating. Toyota improved on their HG design and construction so that's what most folks go with. Of course, you have few aftermarket HG choices as well.

You don't need to do HG at this juncture if you don't want to. But the front cover removal may have to be removed for the timing chain installation, unless you can get creative and fish the chain around the bottom sprocket some how.

I personally think it would be a VERY good idea to remove that front cover to inspect the lower end of things to determine what else may have initiated the chain failure. At the very least inspect the lower sprocket carefully and slipper condition etc...

cheers,
george.

 

[Howard705]

Don't think it's even possible to put it on without removing the cover-unless there's a master-link I don't know about. Pan and head are supposed to come off too, but I think there may be some work-around-shortcuts for those.