The Saleen Forums at header image

Go Back   The Saleen Forums at > Saleen Vehicle Discussions - Tesla, S7, Focus, Sportruck and XP > 2004-2005 Focus N20 and S121
Register FAQ Members List Calendar Mark Forums Read

2004-2005 Focus N20 and S121 Just for the Saleen N20 and S121 Focus cars.

Thread Tools Display Modes
Old 12-15-2011
Continuous Continuous is offline
Saleen Forums Participant
Join Date: May 2011
Location: Pottsville, PA
Posts: 31
Default Q: Compression ratio? - 2005 N20

Hey everyone out there I've got a question for you all about a 2005 Saleen N2O with a 2.0 Duratec. I would like to put a turbo on my car but I want to leave the nitrous system on with the turbo this is like the only major upgrade I want to do on the engine besides like injectors or such. My question is about compression ratio I don't know what the compression ratio is on the stock engine nor do I know what it is with the nitrous. Basically I want to make sure that on my stock block, and head I would be able to run a turbo with the nitrous to spool it. I mean I just don't want to install this and find out I need to change my whole block or head. I also saw another Saleen Focus owner without the nitrous that turbo'd his car and he had to add something to the exhaust because supposedly the Magnaflow exhaust can only handle like 8 pounds of boost and obviously a turbo is gonna need to push out more boost then that, at least for me it will. So, if anyone out there has any answers to my questions or knows where I can get said answers I'd greatly appreciate it.
Reply With Quote
Old 12-17-2011
busaandy busaandy is offline
Saleen Forums Participant
Join Date: Nov 2011
Location: springfield ma
Posts: 75

the stock rods and pistons wont stand up to more then 250 whp safely. can you go past it im sure, people have.. ive been talking to a tuner that deals with tuning foci... just using the n20 maxs out the motor....... once you do the rod and pistons your good for over 400+hp
Reply With Quote
Old 01-02-2012
Continuous Continuous is offline
Saleen Forums Participant
Join Date: May 2011
Location: Pottsville, PA
Posts: 31

So basically I would need to replace the rods and pistons in the engine and add the turbo that's it for the engine. I also heard that I need to do something with the exhaust due to the fact it would only handle up to like 8 pounds of boost. Is there any truth to that?
Reply With Quote
Old 01-30-2012
saleen#89 saleen#89 is offline
Saleen Forums Registrant
Join Date: Aug 2011
Location: janesville, wisconsin
Posts: 8

You can run up to 12 psi on the stock engine with the fswerks turbo kit. Also with the saleen exhaust you are ok to run it you just will be restricting the power. I have an 04 saleen focus that i turboed last summer and i felt the difference on how it pulled going to a bigger exhaust. With the fswerks turbo kit the recommend using a 2.5'' when you put the kit on but you dont have to.
Reply With Quote


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 On

Forum Jump

All times are GMT -4. The time now is 09:22 AM.

Orders placed through these advertiser links help to support SOEC and this website.

Tire Rack Wheel Clearance

When you buy one Valeo® ULTIMATE™ Wiper Blade from Tire Rack, you'll get one free!

Dunlop $50 Rebate


All Original Content Copyright © 1991-2021 Saleen Owners and Enthusiasts Club, LLC (SOEC). All Rights Reserved.
SOEC is the official independent, non-profit organization for owners and enthusiasts of vehicles by Steve Saleen and Saleen Automotive, Inc.