when you look in the service manual it talks about a "soft material coating" and i was wondering if i sent the engine to a maching shop to be cleaned like the rootor housings, rotors, ect. if it would destroy or remove the coating. it is for a 91 n/a. thanks

 

Why don't you ask the machine shop about it?


-Ted

 

you will need to have the housings lapped as well as cleaned. my suggestion would be to send the housings to a reputable builder like mazdatrix, atkins, racingbeat, and they will lap and clean. or just try calling one of the builders and ask. btw, the coating is metal, not a lubricant.

 

the service manual just says take care not to damage the soft coating so i was wondering if having the machine shop clean the parts would it hurt the soft material.

 

no, they mean not to throw it around and chip it. like i said before, its a metal coating. but you will need to lap the housings. its like honing a cylander so that the piston rings will seat in properly.

 

I have heard that lapping removes the coating and greatly increases wear on the side housing. Essintially it is better to have a housing that is in spec than to lap one into spec. can anyone give an opinion on this?