JE 10.75:1 102mm piston on 91 oct. pump gas

im looking at big bore kits an came across a JE 10.75:1 piston im looking to get the highest compression an still run 91 oct pump gas with no problems and not have to worry about the timing my cdi box is throwing at it what do you guys think? also will be adding a hot cams stage one drop in cam not the mudbuster thanks

Should work fine,thats what I run and a stage 1 raptor cam,runs great!!

Great thanks for the reply

I nave the hotcams mudbuster stage one , what the difference in the stage one an the mud buster stage one ???

http://www.hotcamsinc.com/ProductSearch.aspx?page=1 rhino cams mudbuster and stage 1

http://www.hotcamsinc.com/ProductInfo.aspx?item_id=547  this is what they call stage 2 rhino cam.more midrange.

so u have mudbuster cam,stage 1,then stage 2 which would be raptor stage 1,then stage 3 would be stage 2 raptor cam 4005-2. then stroker cam which would be 4050-3 raptor stage 3 cam,which is mostly all top end.

rhinosport84 wrote:

im looking at big bore kits an came across a JE 10.75:1 piston im looking to get the highest compression an still run 91 oct pump gas with no problems and not have to worry about the timing my cdi box is throwing at it what do you guys think? also will be adding a hot cams stage one drop in cam not the mudbuster thanks

 I'm running the CP 10.5:1 piston with a Mudbuster cam on 91 octane and have had zero issues in 3000 miles. I suggest upgrading your cam chain tensioner to the 700 tensioner. The 660 tensioners are a screw type and have been known to loosen up. The 700 tension ears are a ratchet style and won't loosen up.

x2 the stock 660 tensioners are junk!!700 ratchet style is the only way to go!!

The problem is that the 4034-1 mudbuster cam used to be a bigger lift cam,then they lowered the lift on the newer mudbuster cam and kept the 4034-1 #,if looking for a mudbuster cam then u want the old one which is very hard to find...research it and u will see what I mean,thats why I went with stage 1 raptor cam,great bottom to midrange without loosing topend!!..check it out on raptor forums.

http://www.raptorforum.com/forums/64-raptor-660-modifications/60914-hotcams-stage-1-vs-mudbuster.html  here is the discussion about the old style mudbuster and new mudbuster cam.

I believe that my stock 660 cam chain tensioner is what cost me my motor , 700 ratchet only way to go

 Don't know when they changed the lift but think mine is the older one was bought around 08-09 very happy with the way my cam

keep in mind there talking about a lot lighter vehicle,the stage 1 raptor cam works very well with a rhino and higher compression piston,and a good flowing head!just ask James!!

if u got the older mudbuster cam then I would stick with it!!...very good cam!!

good info to know I had no idea that the chain tensioner in the 660 were prone to fail I will def go with the 700 tensioner. im working on a deal right now to get my hands on another rhino have a guy that wants my super duty an offerd me a 06 660 full cab ext cage 4 seater heat an more if I end up with that one too I might just stroker my 07 an use the 06 for the family

rhinosport you need to take some more pics of your rhino and post them up, I really like that whole setup.

thekevin wrote:

rhinosport you need to take some more pics of your rhino and post them up, I really like that whole setup.

thanks, I have a bunch of pics of it when I get a day off ill post them up

Also, don't forget to upgrade the cam decomp pins. Oems have been known to sheer off. Benchmark Performance has some nice pins made out of tool steel.