Bought a blown up SE-R yesterday, today I took the engine ap

[datdaz8400]

I bought a 2002 Sentra SE-R yesterday with a blown engine. The serptentine belt had broken on the car and the engine was quickly overheated, and locked up. I took the engine out today and took it apart. I only found a few problems.

The crankshaft main bearings are good, the cylinder walls are good. The head is straight and will be sent out to be pressure checked, but I would venture to say it's good. It bent #4 rod when that rod bearing spun, and all the rest of the rod bearings are pretty bad. The crank is likely shot, as is the rod bearings. The pistons and everything else look great. Even the rings look good.

I'm planning on rebuilding this engine. I need a new crankshaft, rods, main & rod bearings, and a head gasket. What are my cheapest options here? I bought this car to give it to my sister for free, so I don't want to spend $1200+ on a used engine. It's actually cheaper for me to purchase a complete 07 Altima engine, but I need to know if the crankshaft and rods will interchange. Otherwise, what other options do I have on buying a crank kit? It's after 5 and most places are closed, so I have to wait until tomorrow to call around. I thought I'd come to the experts.

Any and all ideas would be great

[PapaSmurf2k3]

Well you could roll the dice and try just replacing the bearings and that one rod. I think the compression ratio (among other things) are different between the Altima and SER engines.

[06_blkout]

The 07 rods and crank are interchangeable, the turbo guys do it, but I'm not sure if it's a direct swap.

I do know that there's something different about the wheel that reads the crank sensor being different.

[datdaz8400]

I bought an 07 Altima qr25 for $500, it had 62k. I pulled the engine apart, stole the crank, rods, pistons, and main & rod bearings out of it and it fit perfectly into the 02 engine. I performed the free balance shaft removal mod, installed a New head gasket, and resealed everything. It runs perfect. No check engine light. No mod to the crank trigger.

[06_blkout]

Awesome Nice work man.

[el_blacky06]

Daym sounds great for those who further want to build their qr25 for us 4th gen or coupe guys.
Even tho it might be a different compression ratio the parts seem to fit internally & externally

[datdaz8400]

That, and it runs perfect. No check engine light, no problems.