How do you know if an engine has been rebuilt?

[Joe's_GSX]

I have owned 4 4G63's. I am looking at another one that says it has the following engine mods:
14K on build 92 6 bolt
Wiesco 9.0:1 pistons
Wiesco rings
Eagle rods
Arp headstuds
Arp Rod bolts
Ported head
Ported & polished intake
Balancing shafts removed

I am wondering how I could test to see if this work has been done without major teardown? What would I look for in a compression test? Any other things to look for?
Thanks!

 

[yangtech]

how about asking for paper work..

 

[Joe's_GSX]

As you can see I am not that thoughtless, I want mechanical proof. The paperwork could come from another car. Who knows!?

Would compression come back around 170-180 with a 9:1 comp ratio or am i all wrong?

 

[oldman]

The compression numbers can vary due to many different factors, I would bite the bullet and pull the oil pan.

 

[Ultimatedsm]

I was going to say that oldman, damn it you beat me again!!!!!!

 

[Joe's_GSX]

What things should I look at in the oil pan? I should be able to see that the balance shaft is removed; although this could have been done without an engine rebuild. I need some verifications. Maybe I should jsut tell him that I can't confirm the motor is built so I am not going to pay as if it was built. WHats the worse that could happen; not getting the car...big deal. DSM's are not impossible to come by.

 

[ozgvr4]

I would bite the bullet and pull the oil pan.

Definetly.

It's the only way to be 100%.


Added bit: as you said, the balance shafts can be removed while the engine is still intact so that doesn't help you unfortunately.

 

[oldman]

What things should I look at in the oil pan? I should be able to see that the balance shaft is removed; although this could have been done without an engine rebuild. I need some verifications.

You can check the bottom of the pistons for serial numbers.

 

[luvmygst]

If you pull the pan the eagle rods should be pretty obvious. If they are there then I'd bet that the rest of the motor is done also.

 

[kidwiththelaser]

Yeah, just pull the oil pan. That way you know for sure.