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mod the 300, need help
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Posted by: 300exil

hello, i need to rebuild the top engine...anything i can mod thier if i already open it up ?
and if so any good place that ship worldwide ?
Thanks!

Posted by: bwamos

Top end rebuild on the 300?

You could always get a better cam. Possibly look at a very mild port/polish, and shave the head to increase compression. Even being international, I'm sure you can find someone to do that work easily.

Posted by: 300exil

well, it pretty impossible to find someone to do the job in good price...what i need is parts...and cant find hot camshaft here...
any other things i can do ?

Posted by: bwamos

Look for webcams. I dont beleive hotcam even makes a cam for the 300ex/250x.

Outside of that, I'd get an 11:1 compression piston from weisco. Same bore. Just get the cylinder honed for like $20 and toss in the new piston. That will be your best bang (pun?) for the buck if you already have a pipe/filter. If not the pipe/filter combo is your best bet. The 300ex is horribly corked. Easily get a 20% power increase just by replacing the silencer, header, filter, and rejetting.

Posted by: 300exil

i have only filter atm..secend i need to send my old cam to get new webcam ;\
secend what exactly the compresion piston do ?
and if i still want to bore it what size do i need?
also what type of dynojet i need for that
and how much power will i gain ? will it be notice able:
uni filter/bore to 330/dynojet?