NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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sen2two 10-28-2007 07:51 PM

ok...so i picked up my 83-85 core today. and it has the thinner flywheel with no dowel pins (79-80) from what you said. so i'll still have to switch over the flywheel. so i shouldnt have to swap the front counter weight right???



oh...and the reason im swapping the core is the front rotor weld "welded" to the damn shaft on the other motor. or at least the bearing was stuck to it beyond the point of getting it off. but the motor ran fine until it started smoking like a building on fire. i found a broken o-ring on the rotor that has to be the cause of the smoke. but i shut if off after about 1 minute of the crazy smoke show...that that couldnt of caused the rotor-shaft porblem. any other ideas??? and could the rotor and shaft be re-usable with a new bearing.

bigboi12A 10-29-2007 06:44 PM


Originally Posted by sen2two' post='886524' date='Oct 28 2007, 04:51 PM
ok...so i picked up my 83-85 core today. and it has the thinner flywheel with no dowel pins (79-80) from what you said. so i'll still have to switch over the flywheel. so i shouldnt have to swap the front counter weight right???



oh...and the reason im swapping the core is the front rotor weld "welded" to the damn shaft on the other motor. or at least the bearing was stuck to it beyond the point of getting it off. but the motor ran fine until it started smoking like a building on fire. i found a broken o-ring on the rotor that has to be the cause of the smoke. but i shut if off after about 1 minute of the crazy smoke show...that that couldnt of caused the rotor-shaft porblem. any other ideas??? and could the rotor and shaft be re-usable with a new bearing.

use the fly-wheel and counter weight off the motor thats in the car now put it on the the motor u just got. Think about the this. based on what I have viewd personally and what I have been taught by my elders is that when a bearing seazes on the e-shaft like that its from lack of oil or lack of oil pressure. If a oil control rig goes bad; dries out or just plain breaks that just lets more oil flow through and yes smoke a hell of alot. Are u sure the last time u ran it even though it smoked you didn't rev the **** out of it for more than a minuet? Thats just my two cent though?

sen2two 10-29-2007 07:34 PM

it didnt rev it at all. i drove it at about 2k for a half mile while smoking. then into my garage. and that was it.


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