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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Does plating a cylinder change the castings properties?
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[QUOTE="DEANSFASTWAY, post: 680652, member: 31309"] Mike S try out Mc Master Carr catalog or MSC catalog for thread inserts. Its not the place where you had the job done thats at fault so Its not likeMillenium is a saving grace Its not Erics fault either.. This happens every time you get something coated . Every timne I cet a cyl recoated I have to clean out the threads with a bottoming tap and now I do it as a rule. Trouble is (and not a big one) There is not much room left on your RM cyl and if you put alot of inserts etc it may distort the cyl bore walls when installed . Youll want to install all of the coils and studs and them have the cyl rigid honed not ball honed to make sure the bore is totally round. This is a real good idea and might help disway a future seizure.ON 400Exs and XR 400s they also pull out the cyl studs and blow gaskets. When you bore a 400 Ex out the sleeve gets real thin and after a seasons use when refreshening you can actually see a pattern near the suds on the cyl bore where the rings wore deeper . For this reason and this motor I built a torque plate so I torque against the studs to make it seem like the cylinder head is installed , then finish hone. On your 80s and 125s Ill use the original studs and use 4 old wrist pins with washers at the cyl top and torque the head stud nut down then finish hone if I think there is a problem.Sometimes theres only so much time you can throw at something until youve got to scrap or save for a momento. The aluminum seems to get kinda brittle esp Japanese , Its funny but on like ktms and huskys and stuff it always seems to be a higher quality of cast and denser aluminum. GLMF [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Does plating a cylinder change the castings properties?
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