JE piston comparison???

[atl3128]

I know that FST sells an 11:1 JE pistson for their 366 kit but I also se a 10.5:1 version on Powroll's site aswell as ebay and JE's web site which one is lightest and produces the best power? Also were is a good place to get the Megacycle 252X1 cam?


Thanks

 

[jasonp]

Also alba claims they have a 10:75.1 JE custom made piston that uses all overbore sizes not just two as the standard and 85mm that everybody sells.

 

[dave76]

FST dosn't get the 11.1 JE no more, it's 10.5:1 now. You can get the cam here www.megacyclecams.com

 

[atl3128]

I spoke with Mickey at FST and he claims to that his pistons are 11:1 is it possible that FST has theirs custom made by JE like Alba?

 

[dave76]

I spoke with Mickey at FST and he claims to that his pistons are 11:1 is it possible that FST has theirs custom made by JE like Alba?

Mabe so, I had thought that the JE catalog only offers the 10.50:1 so I figured he couldn't them anymore.

 

[atl3128]

I dont know either Dave do you think it would be a big difference between the two? Also i noticed that you have the 446 FST kit in your 02 warrior how much of a diff would you say it produced? How does it compare to other larger cc bikes?

 

[dave76]

All I say is it fucken rips. There really isn't much comparison with other quads because this engine has so much torque, those 450 machines can only dream of this.

 

[atl3128]

How does it compare to a raptor 660? How much did it cost to install start to finish and have you had any reliablity issues?

 

[jasonp]

After working on a 660 engine I will never buy one, total POS. My guess is going up to a stock one or lightly modded you would burn him.
I have pic's of alba's pistons up close and also 12:1 JE warrior pistons. They look the excate same. This is why I never went with there pistons. I believe they use a little thicker gasket to lower compression but that is just my guess as they will not give me any info on it. You can try calling them...
I have the new style JE 10.5:1 piston 85mm. I have around 175psi cold cranking compression with a huge cam. I believe that is a little more then what 10.5:1 comes to....
FST most likely uses off the shelf JE pistons.

 

[dave76]

No reliability issues that were'nt my fault. I just never changed the oil right after the initial start and the oil pick up screen was clogged with fibers from all the rags I used to wipe the motor down, and it caused no oil to flow to the head killing the cam and both rockers.

I can spank a piped 660 through the trails and keep up with them on top speed. That 660 engine is garbage thats why it's long gone and replaced by the 700.

 

[atl3128]

Man that sounds like an awesome setup you have. I dont have a Warrior but a 04 Wolverine that I am looking to build I just dont have the funds for a 446 nor the know how to do it myself. I think right now I am going to do the 366kitwith the 10.5:1 or maybe the Alba 10.75:1 with a Megacycle 252x1 cam and port and polish of the head. I already have an HMF slipon, K&N w/Proflow adapter, Dynojet and EPI clutch kit. I am hoping that all of the upgrades that i have together will get me to somewhere around 25hp at therear wheels what do you think?

 

[dave76]

Man that sounds like an awesome setup you have. I dont have a Warrior but a 04 Wolverine that I am looking to build I just dont have the funds for a 446 nor the know how to do it myself. I think right now I am going to do the 366kitwith the 10.5:1 or maybe the Alba 10.75:1 with a Megacycle 252x1 cam and port and polish of the head. I already have an HMF slipon, K&N w/Proflow adapter, Dynojet and EPI clutch kit. I am hoping that all of the upgrades that i have together will get me to somewhere around 25hp at therear wheels what do you think?

This changes things a bit, you didn't say what you had. For the Wolvy I wouldn't be looking for cam with such long duration, I would rather see you go with the megacycle 252X2. The Wolverine is about 60 lbs heavier then a Warrior and with the 252X1 being topend oriented, it will really make a 4x4 quad sluggish in the low end, plus you can't play around with sprokets like we can so you cannot move your powerband around. I would get the standard Dynatek CDI, JE piston, good exhaust if you don't have one, Megacycle 252X2 and if you got a few extra bucks get your head ported, this will make a nice torquey motor.

Don't try to build the motor like a Warrior BC they are two different animals. If you build that motor like I just said you will be very happy with it. Hell I would love an older Wolverine. Give Mickey at FST a call and see if he still dose the manuel clutch conversion on the wolverines, that would make it even more awsome.

 

[atl3128]

Yeah I was confused on the cam number but the 252x2 is the one I was thinking of. I currently have an HMF pipe I didnt know dynatek mad a cdi for the wolverine.