Advice for moving forward.

[Mahreeoh17]

So I recently picked up a 1999 GST for relatively cheap, the only caveat being it was a crank/no start. The guy I bought it from said his brother ran it without oil and it will start up but knocks terribly (I threw starter fluid at it and confirmed)

I'm partial to the 99 motor because of the split thrust bearings and I knew this one would've held up a while, however I'm not sure if the extent of the damage done from the previous owner. And I don't want to go 6 Bolt and have to deal with the cross over of parts.

What would you do?
Rebuild?
Swap another 7 Bolt in and hope to get one with split thrust bearings?
Swap in a 6 bolt?
Frankenstein something made of both?

 

[pauleyman]

Hard to decide without knowing the condition if this motor. Block and crank may be salvageable, maybe not. I would take it apart first then decide. In your case motor has to come out no matter what. Parts availability is also a consideration.

 

[Mahreeoh17]

Hard to decide without knowing the condition if this motor. Block and crank may be salvageable, maybe not. I would take it apart first then decide. In your case motor has to come out no matter what. Parts availability is also a consideration.

That's true. I'm basically going with the idea that this motor is completely toast. Would you consider a rebuild on a motor that ran with no oil?

 

[pauleyman]

There is no way no answer that question. Either the parts are good or they aren't. You take it apart, observe and measure, machine etc. Would I? Absolutely. Knowing if you can brings us back to the same scenario. You won't know until it's apart. Oil cooler will be trash. No way I reuse those after this.

 

[Mahreeoh17]

There is no way no answer that question. Either the parts are good or they aren't. You take it apart, observe and measure, machine etc. Would I? Absolutely. Knowing if you can brings us back to the same scenario. You won't know until it's apart. Oil cooler will be trash. No way I reuse those after this.

Okay that gives me some guidance. I was just trying to weigh out the scenarios and cost. I know it's quite a bit to rebuild vs dropping in something else.

 

[fourgsixty3]

Okay that gives me some guidance. I was just trying to weigh out the scenarios and cost. I know it's quite a bit to rebuild vs dropping in something else.

It's a double edged sword. You can pick up another motor to drop in but unless you really know it's in 100 percent working order you could wind up in a bad spot. Like Pauleyman said, take it apart and see where you stand. I would also start looking for a backup at this time.