Machine cases for big bore?

[destey]

I'm completely rebuilding my motor. I'm going to put the stock cylinder back on, but at some point in the future I may step up to some large bore cylinder.

Can I have the cases machined for big bore, but put the stock cylinder back on?

Who can do the case machining?

thanks in advance,
D

[cdrookie]

yes

find a local machine shop, use a die grinder and do it yourself, or you can send them out to be machined

[1promodfan]

M&M ATV does case machining. Andy and those guys are really good guys, and will help you out any way they can.
http://www.mmatvonline.com/index.php?osCsid=27b9223ca743940e8a0232659fd924bd

[86 Quad R]

These (http://www.titanracinginc.com/) are good. :cool:

[250r grave yard]

Originally posted by 86 Quad R
These (http://www.titanracinginc.com/) are good. :cool: x-2 to that company he getting my puma for me

[86 Quad R]

Originally posted by 250r grave yard
x-2 to that company he getting my puma for me

he building it aswell?

[250r grave yard]

86 Quad R im building it he's getting the parts for me

[oldschoolr]

yes send them out . do not do it yourself with a grinder. do you guys remember johnf ?

[destey]

Originally posted by oldschoolr
yes send them out . do not do it yourself with a grinder. do you guys remember johnf ?

JohnF? do tell pls!

[cdrookie]

people on here have used a grinder before, it's just clearance. you need to know the OD of the sleeve before you start machining or grinding though:eek:

[86 Quad R]

quite honestly i'd wait until the time comes to mod the cases for the b/b. :cool:

[destey]

Originally posted by 86 Quad R
quite honestly i'd wait until the time comes to mod the cases for the b/b. :cool:

So its pretty much matching the cylinder to the cases? I was just thinking since I have it all apart and am sending the cases to be painted, may as well have it prepped for big bore so when I do finally get a large cylinder I just have to plop the new cylinder on versus tearing it all down again (has taken me months at my slow work pace)

[86 Quad R]

understand where your coming from in your thinking but it would be hard for me to run the current setup awhile and then later add more power/bigger cylinder to a somewhat tired/used crank and bearings. me personally i would be pulling it down and going with a fresh crank with the fresh larger cylinder. see what i'm saying? :cool:

[Ruf Racing]

Originally posted by 86 Quad R
understand where your coming from in your thinking but it would be hard for me to run the current setup awhile and then later add more power/bigger cylinder to a somewhat tired/used crank and bearings. me personally i would be pulling it down and going with a fresh crank with the fresh larger cylinder. see what i'm saying? :cool:

/\ Agreed. If you plan on riding your current setup for awhile, it
would be wise to fresh'in up the bottom end to handle the
big bore. :ermm: