CP Piston 100mm 11:1
 

Hello,

I was surfing on the internet and this was coming by.

http://www.gw-racing-parts.de/index2...is=2010&lan=en

Search for this article name: PCPXT660/04-09/100mm

Did somebody tried a higher compression piston with the stock cylinder size?
And so yes is this recommend? HP gain? torque gain?

Is the diamond honing really necessary or only on a engine with allot of km's?

Greetings,
Thom Plas

I have seen their pistons & tunning kits, you get around +1.5 more HP per 1:1 compression point, so you will have 1.5 more HP going from a 10:1 to a 11:1 piston of the same bore size.

If you set the correct deck height for the piston you can see 2 more HP per compression point, the XT has a low deck height as standard.

I would not diamond hone a nikasil bore, I have always used a fine scotch brite pad

The min I would go on the XT motor is 11.5:1 CP piston with a Raptor 102mm cylinder, you can machine the cylinder skirt so the cylinder drops right into the standard XT casings.

Thanks for ur reply, i've found the piston.


http://www.tqsatv.com/proddetail.php...00-TECH-PISTON

Greetings,
Thom Plas

http://i62.tinypic.com/25tiauf.jpg
Christmas is early :)
102mm CP Tech piston 11,5:1 and Throttlebody bored out to 46mm by www.Maxbore.com

Next step is to port my cylinderhead and get a 102mm OTR Cylinder

Is there a other brand or company than OTR that offer bigger exhaust headers?


Cheers

Hi Kev,

Can i run RON 95 and 98 on a 11,5:1 piston?
Or is it only recommend to run RON 98?

And do you know the specs for the needed deck height?

Greetings,
Thom Plas

98 RON would be the one I would be using.

Okay thanks Kev!

Just sent my cylinder head to america for a porting and flowing proccess.
And it will be power coated black
I'll post some pic's if its done!
:team[1]:

Look forward to seeing your results.:occasion14:

Just started with breaking done the bike.
Are there things to look after? what's important?
Also made a 220v adapter for my powercommander.
Build it by myself for only 10 bucks. Normally it cost 70 bucks??
http://i59.tinypic.com/2j5awqb.jpg


http://i57.tinypic.com/2ilhp9t.jpg

Yesterday i went further with the bike.
The engine is finally dismantled from the bike :love-smiley-085:
The hardest part was to lower the engine out of the frame :/
Everything went oke with ur instructions kev.
What is that engine heavy, wow haha.

Kev is there a way to change the thread's name?

Some pics

http://i61.tinypic.com/op8h90.jpg

http://i59.tinypic.com/98x1c1.jpg