Polaris RZR Forum

High compression pistons.... How high?

This is a discussion on High compression pistons.... How high? within the Engine and Drivetrain forums, part of the Technical category; anyone offer a really high compression piston? like 14-15:1 Or shorter pushrods if I have to cut the head to get my comp up that ...


Go Back   Polaris RZR Forum - RZR Forums.net > Technical > Engine and Drivetrain

Engine and Drivetrain For discussion of drivetrain and engine performance and maintenance

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old October 18th, 2012, 06:46 PM
BSG's Avatar
Feedback Score: 0 reviews
 
Member #30436
Join Date: Sep 2011
Posts: 48
Garage
View BSG's Photo Gallery(0)
High compression pistons.... How high?

anyone offer a really high compression piston? like 14-15:1 Or shorter pushrods if I have to cut the head to get my comp up that high...

anyone checked with comp cams if they make a forged one piece formed tip pushrod yet? Im sure its a close size to something they have or possibly willing to cut specially for guys like us.

and if you ask why I'm looking for this stuff then yes I'm looking into building a nasty e85 engine.
Reply With Quote
Sponsored Links
RZRForums.net is the premier Polaris RZR Forum on the internet. Registered Users do not see these ads. Please Register - It's Free!
  #2  
Old October 18th, 2012, 07:23 PM
hogA55wild's Avatar
Feedback Score: 1 reviews
 
Member #32687
Join Date: Nov 2011
Posts: 325
View hogA55wild's Photo Gallery(0)
Re: High compression pistons.... How high?

800 or 900?
__________________
2012 artic kitty
Reply With Quote
  #3  
Old October 18th, 2012, 07:37 PM
allcool's Avatar
TURBO'S RULE
Premium Member
Feedback Score: 1 reviews
 
My RZR: 2010 rzrs
Member #11295
Join Date: Nov 2009
Location: s fl
Posts: 1,762
View allcool's Photo Gallery(7)
Re: High compression pistons.... How high?

Quote: Originally Posted by BSG View Post
anyone offer a really high compression piston? like 14-15:1 Or shorter pushrods if I have to cut the head to get my comp up that high...

anyone checked with comp cams if they make a forged one piece formed tip pushrod yet? Im sure its a close size to something they have or possibly willing to cut specially for guys like us.

and if you ask why I'm looking for this stuff then yes I'm looking into building a nasty e85 engine.
12.5 HPD are the highest I've seen... But, To be honest with you, the 800 engine doesn't lend itself easily to very high compression. The ports, combustion chamber, and general engine configuration are just not great for high HP NA applications. All the normal stuff produces small gains. And a lot have tried. The best big bore high compressin kits advertise 20+ hp gain, but on the dyno they prove to be 7 -8 hp gain. HP per $$$ is just not there.

But.... blow a little boost in there, and now you're talking. They respond very very well to boost. Especially if you know what you're doing with e85 or race fuel.
__________________
CURRENT GLAMIS WEATHER
Reply With Quote
  #4  
Old October 19th, 2012, 05:41 AM
BSG's Avatar
Feedback Score: 0 reviews
 
Member #30436
Join Date: Sep 2011
Posts: 48
Garage
View BSG's Photo Gallery(0)
Re: High compression pistons.... How high?

next year I'll be running a race series that doesnt allow any power adders like turbo, supers, or No2.... need all motor 800, no big bore allowed.

I wanna stick with cams, springs porting and high comp for e85. rules dont say anything about fuel
Reply With Quote
  #5  
Old October 19th, 2012, 05:42 AM
BSG's Avatar
Feedback Score: 0 reviews
 
Member #30436
Join Date: Sep 2011
Posts: 48
Garage
View BSG's Photo Gallery(0)
Re: High compression pistons.... How high?

I have a box full of everything i need to turbo this bad boy, but I dont want to fab it all up and have to take it off for next season. I'm a turbo guy personally.... just cant get away with it yet.
Reply With Quote
  #6  
Old October 19th, 2012, 06:15 AM
swingarm1's Avatar
Official Site Vendor
Premium Member
Feedback Score: 155 reviews
 
First Name: Tim
My RZR: XP 4/2 TAGTEAM APEX / UTVINC / BMP FAB / COGNITO / STM / HOLZ / GNS / $$$$ EDITION
Member #7690
Join Date: May 2009
Location: PRESCOTT, ARIZONA (928) 273-4249
Posts: 32,646
View swingarm1's Photo Gallery(1)
Re: High compression pistons.... How high?

Quote: Originally Posted by BSG View Post
anyone offer a really high compression piston? like 14-15:1 Or shorter pushrods if I have to cut the head to get my comp up that high...

anyone checked with comp cams if they make a forged one piece formed tip pushrod yet? Im sure its a close size to something they have or possibly willing to cut specially for guys like us.

and if you ask why I'm looking for this stuff then yes I'm looking into building a nasty e85 engine.
Check with Nate @ Alba Racing for CP Pistons...
Reply With Quote
  #7  
Old October 19th, 2012, 02:02 PM
BCRacing24's Avatar
Feedback Score: 1 reviews
 
First Name: Brian
My RZR: 2012 Liquid Silver XP4 900
Member #20030
Join Date: Nov 2010
Location: Central IL
Posts: 1,919
Garage
View BCRacing24's Photo Gallery(0)
Usa Re: High compression pistons.... How high?

Quote: Originally Posted by BSG View Post
Or shorter pushrods if I have to cut the head to get my comp up that high...

anyone checked with comp cams if they make a forged one piece formed tip pushrod yet? Im sure its a close size to something they have or possibly willing to cut specially for guys like us.

I have used these before as they will make ANYTHING you want. They are super nice pieces !!!

http://www.pushrods.net/index/index.html
__________________
Member #247
Reply With Quote
Reply

Lower Navigation
Go Back   Polaris RZR Forum - RZR Forums.net > Technical > Engine and Drivetrain


Search tags for this page
2012 rzr 800 pistons
,
best compression piston for polaris rzr 800
,
best piston for rzr 800
,
high compression pistons for rzr xp
,

piston hi comp polaris rzr xp900

,

polaris rzr 800 high compression piston

,

polaris rzr 800 pistons

,
polaris rzr 900 xp high compression piston compression test
,

rzr 800 high compression pistons

,
rzr 800 s high compression pistons and cam
,
rzr 900 hig compession piston review
,
rzr 900 xp piston install
,
rzr xp high hp na motor
,
weisco forged piston for turbo 500 ho polaris
,
why should i put high compression pistons in my rzr s
Click on a term to search our sites for related topics.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
high compression pistons help Walker Engine and Drivetrain 3 March 23rd, 2012 08:41 PM
Long Travel RZR High Compression brick Polaris RZRs For Sale 7 June 13th, 2011 12:28 AM
meth water injection high compression and or high boost dr.vacation Forced Induction 1 May 11th, 2011 07:32 AM
RZR XP900 High Perf Pistons available AlanRR RZR XP 900 4 April 26th, 2011 11:51 PM
high comp. pistons????? billrigg Engine and Drivetrain 19 December 17th, 2010 06:40 PM

All times are GMT -7. The time now is 12:47 AM.




Clubs, Garage Plus vBulletin Plugins by Drive Thru Online, Inc.