Big bore kits

[brif]

Anybody seen or heard of these big bore kits before? They are located about 45mins away from me. I talked to several places sparks,gtthunder and they say their big bore kits are still in development. I'm curious about these guys because they are so close....
http://www.maxpower-engines.com/bb-atv.htm

[R3Concepts]

Lots and lots of big bore 450Rs are blowing up out here on the west coast.

[BIGBLOCKBILL]

I just installed my FST 500 kit with a HRC cam for the XC race this past weekend, it pulls like my turned up Duramax, just smooth and torquey. You might want to give Mickey a call , he said he had more kits available.

[WhiteZee]

is the FST 500cc kit just a piston?

[BIGBLOCKBILL]

Kit includes piston,rings,gaskets,and cylinder(exchange). FST cam is recommended but not required.

[brif]

Did mickey port it also? What comp ratio and brand is the piston? 2 or 3 ring piston? Price if you don't mind me asking?

[BIGBLOCKBILL]

Mickey said not to do any port work unless it's a TT bike,it will kill the bottom-end. The piston is a 2 ring JE 12:1 comp,starts very easy with HRC cam. You'll have to call him for a price.

[250RXCrider]

Originally posted by BIGBLOCKBILL
Mickey said not to do any port work unless it's a TT bike,it will kill the bottom-end. The piston is a 2 ring JE 12:1 comp,starts very easy with HRC cam. You'll have to call him for a price.

Bill....just curious if you are running straight race fuel or 93 octane. I read in a few other posts that you can run 93 octane, but I just wondering what you feel works best?

Thanks,
-JP

[BIGBLOCKBILL]

You can run pump gas with a cam at least as large as the HRC. I mix my fuel 50/50 just to be on the safe side,plus I like the smell:D

[250RXCrider]

Originally posted by BIGBLOCKBILL
You can run pump gas with a cam at least as large as the HRC. I mix my fuel 50/50 just to be on the safe side,plus I like the smell:D

Thanks man, I am running the sparks cam so I guess I would have to do some research with the race gas. One more quick question are you running the stock gearing with the 500 kit?

[BIGBLOCKBILL]

No,I stayed with 13/38,works best for XC.

[brif]

Where did you gain with the kit: bottom, mid, top or all over? I'm getting curious about the kit. Anymore feedback on how it works would be good........

[BIGBLOCKBILL]

With the HRC cam it picked up everywhere with the best gains being mid to top. Doesn't start much harder either,it will probably get better once I get the jetting dialed in. Ran good enough for 1st overall at the local XC series today.

[brif]

Are you still running the stock carb?

[kazpr]

Bill how much was the kit? Any idea how much the cam was also? Thanks alot appreciate it :)

[BIGBLOCKBILL]

Originally posted by brif
Are you still running the stock carb?

Just for now,I haven't had time to put my FCR on and tune it.

[BIGBLOCKBILL]

Originally posted by kazpr
Bill how much was the kit? Any idea how much the cam was also? Thanks alot appreciate it :)

I think it lists for around $700.00 with cam.