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NEED 280Z BLOCK-Machine shop failure!!


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Pretty sure it's never been bored. No way to know since it's assembled and I have very little inclination to take it apart, being that it's in the way as it is.

Are some blocks incapable of a 1mm overbore? This one was sold to me as a 1978 engine.

 

Prior owner said it burned a little oil though, but it's quite possible it was just running rich. The car it was in was rusted to pieces, and I bought it solely for the transmission, though I've used a few pieces off it (alternator, thermostat housing). It was complete end to end when I got it, all the way down to the air conditioner compressor and harness, both of which are still attached.

 

I'd think that the machine shop owes you a block if they screwed up on their own account. Or a fix. They could sleeve the old one.

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I have no idea. Probably in the high 100s, under 200K. I was told how many, it was either 147,000 or 174,000 but I wasn't paying much attention as I was after the transmission.

 

For $125 you get the whole thing. It'll cost more if I have to take stuff off. I have absolutely no use for 6-cyl L-series engine parts at this point, and I have 2 L28s taking up space in the garage.

 

How far did the machine shop go? A number of 280Z folks claim you can go to 89mm with the L28 (using KA pistons), though I say that's pushing things.

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They went to 87.75mm. I had measured the bore prior to taking in the block and even provided them with a new piston for refrence!!! I wanted to keep the bore at 87mm (for the piston match) and because the engine will see long hard upper rpm (8000-8200??). I have found a block and all it will cost me is a "RATSUN" sticker on my race car!! That I can do. With my luck I will nuke the engine first time out!! We shall see. Thanks

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