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scientist wrote:they were? swear they were all 7 bolts...considering the time frame in which mitsubishi switched.
Ok confirmed, the Evo 1-4 share the same 7 bolt crankshaft, MD187923 which is superceeded by MD346024
the Only 6 bolt motors stopped production in japan in 1992 on the Galant VR4
MISHI wrote:As for where, you should post that in the classifieds section as you may get a better response there.
scientist wrote:For the last time, NO evos came with a 6 bolt motor from Factory. Mitsubishi Stopped production of the 6 Bolt motor in 1992 and Revised it with the 7 Bolt.
The 4G6x cranks are Nitrided including the 4G64 cranks. The N/A 4G63 Cranks carry the same part number as the Turbo 4G63 cranks as mitsubishi Opted not! to make a different crank. Even the Non turbo bare blocks are Forged from the same mold except the Turbos get the oil squirters machined in POST casting.
the Non turbo and turbo also share the same rods
dragmaster wrote:Thanks a million. Very concise and direct information. Why I trust your info is cuz your source is the very valuable experience. I'm on it.
What are your thoughts on machining the slightly damaged crank to a 1 thousandth and using over-sized bearings??
I was made to understand that the treatment of the crank during the creation process that includes a hardening coating/process of some sort and machining the journals would essentially weaken it.
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