Need Help...ABout to make a big purchase

[turbodsm18]

Alright, So a local has a complete motor for sale but its been disassembled. He is saying that it is a 6 bolt. My question is, how to I tell a difference in the block?

I know the oil pans are different and the crankshaft has only six bolts but how do I tell if the block is actually a 6 bolt.

Also if the block is a 1g 7bolt, would it be ok to put a 6 bolt crankshaft in it and would that make it a 6 bolt.

Some one Please let me know!!!

Thank You Everyone!!!!

-Kevin-

 

[b00stedtalon2]

If there's a 6 bolt crankshaft in it, its a 6 bolt.

 

[turbodsm18]

But its all disassembled, so the cranks could have been switched out.

Thats why I need a way to tell the actuall difference in the blocks!!!

-Kevin-

 

[mygsx2120]

It is the flywheel that actually has 6 or 7 bolts in it, not the crank. Look at where the flywheel bolts on and count the number of holes. Should be simple. The crankshafts are different and not interchangeable. The 1g crank is longer. Also, you can not make a 1g 7 bolt into a six bolt. Although 1g 7 bolts are thought to crankwalk less.

 

[kenamond]

Make sure the crank has 6 bolts *and* fits the block.

 

[turbodsm18]

Make sure the crank has 6 bolts *and* fits the block.

Okay, like said earlier, is the 6 bolt crank longer than a 7 bolt crank?

 

[Locutus78]

The 7bolt and 6bolt engine cradles are different. The 7bolt has more tie-ends

 

[turbodsm18]

Do you happen to have pictures?

-Kevin

 

[turbodsm18]

Also......Would I be able to tell from the main journals and the crank put together.

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These are larger on the 1g's and I beleive the oil squirters are located in a different position.

 

[Dream On]

I know the rear main seal between a 6 and 7 bolt are different, as well as the front case. Found this out when we put some new gaskets on my buddies 6-> 7 bolt conversion. The oil filter housing is different on a 7 bolt also I think, but maybe the 91-94 are the same, not sure.

 

[Defiant]

It is the flywheel that actually has 6 or 7 bolts in it, not the crank.

Uh.... it'd better be both. WTF

 

[zilo900]

Uh.... it'd better be both. WTF

I'd love to see a 7 bolt flywheel attached to a 6 bolt crank

But yeah if the flywheel bolts to the crank............

see where im goin