edwin-82/rx7

iTrader: (1)

So I'm in the middle of rounding up/purchasing parts for my motor rebuild. I had originally planned on replace the stationary gear bearings because of copper showing 1/2 way around them.

Anyways I have another engine that was gifted to me, it had ingested some foreign matter and lost compression. However it was a fresh rebuild, so I'm thinking the bearings are OK. Anyways, they aren't showing any copper -- they're just a little dirty.

Anyways, check them out and tell me if they look usable. No gouges, no copper, so I'm guessing they're fine, but let me know what you think.

Rear bearing:




Front bearing:




I still have to measure them and compare them against my e-shaft to make sure they're within tolerance. I'm a tiny bit worried about the more polished areas -- I'm no expert and I don't know how much of that wear it takes to get down to copper. My motor had 101k on it, and the wear was opposite the combustion area, like the eshaft was pressing on that part of the bearing the most.

TIA
J

IRPerformance

iTrader: (41)

Why would you go through the hassle of a rebuild and not replace the bearings? A full set is less than $200.

edwin-82/rx7

iTrader: (1)

$120 for bearings -- $145 for the tools to do it. That's the part that burns me, and I don't have a shop where I can cob together something to press them out.

Yea, $265 that I don't want to spend unless I HAVE to. If I didn't need two rotor housings ($665/ea now -- weren't they cheaper a year ago??) I'd do it for sure.

Thanks

IRPerformance

iTrader: (41)

I wouldn't put together a motor using used bearings and offer any kind warranty, especially with that mileage. Thats just my opinion. Honestly pressing bearings is a pain in the *** if you don't have the right set up. I'd be happy to do it for you if you want to send me the parts.

yourmom23

iTrader: (4)

Im in the same boat as you, mine were really bad crazy. I think you have to go with new ones no matter what or pay the concequnces of sub par parts. It sucks but has to be done. Does anyone have some prices on pressing in the bearings?? I was just going to mill something down on the lath to press them out are there any tricks to it???

silverfdturbo6port

iTrader: (26)

any copper showing they need to be replaced

edwin-82/rx7

iTrader: (1)

Thanks for the replies.

Ihor, pming you.