Turbo engine build, and parts - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

serialk11r · 11-21-2012, 05:00 PM

Quote:

Originally Posted by No Limit Motorsport

Its a street car. It really isn't low compression at all, these cars just come abnormally high. It is perfect turbo engine compression for pump fuel.

Most WRX/STI guys run 8.2-8.5:1 compression.

That's cuz EJs aren't that great :P

Tradewind · 11-23-2012, 05:09 AM

Taking 20psi on stock parts, plenty enough. Gonna take a good few psi just to bring back the power loss from the compression drop, inefficiency creeping in from all directions

rusty959 · 11-23-2012, 11:54 AM

Quote:

Originally Posted by Tradewind

Taking 20psi on stock parts, plenty enough. Gonna take a good few psi just to bring back the power loss from the compression drop, inefficiency creeping in from all directions

Don't forget that took e85. Not everyone wants to or can run e85. Some people can't even run 93.

Personally if I ever change out the engine internals, (probably will happen eventually) I'm looking to hit 10.5:1 or so. However Ill be looking out for more people doing testing before I'd be completely set on a number.

Calum · 11-23-2012, 01:55 PM

That^^

J_D · 11-23-2012, 02:55 PM

I believe they make both 9 to 1 and 10 to 1 pistons.

civicdrivr · 11-23-2012, 04:55 PM

Price?

MANDALAY · 11-23-2012, 06:11 PM

9:1 is a great number with many builders using this c/r as a norm for building a safe engine.

jdzumwalt · 11-23-2012, 10:36 PM

CP is very good stuff I only use there pistons

DanoFA20 · 11-23-2012, 11:49 PM

Quote:

Originally Posted by Tansey86

With FI I would go with around 10:1, more response and power. If it wasnt DI I could see why going down so low.

wouldnt clearance between piston and head would be close at that CR with boost?

No Limit Motorsport · 11-24-2012, 09:01 AM

Quote:

Originally Posted by DanoFA20

wouldnt clearance between piston and head would be close at that CR with boost?

No, because the stock pistons have a taller dome than these, it would be more clearance.

MANDALAY · 11-24-2012, 04:31 PM

These would be good only IF the total squish area and volume were either improved or remain untouched. If this wasnt taken into consideration they are just shaved down pistons that are nothing special

No Limit Motorsport · 12-10-2012, 04:06 PM

SnapOv3st3r · 12-10-2012, 04:30 PM

Beef...

3MI Racing · 12-11-2012, 05:00 PM

What's the weight on those Pauters?

One thing I can say about Pauter's, having use to special order them in bulk, their tolerances are spot on!!

11-23-2012, 05:09 AM	#16
Tradewind Senior Member Join Date: Feb 2012 Drives: 2006 Subaru Liberty EZ30 S/charged Location: Cairns, Qld, Australia Posts: 291 Thanks: 0 Thanked 53 Times in 40 Posts Mentioned: 1 Post(s)	Taking 20psi on stock parts, plenty enough. Gonna take a good few psi just to bring back the power loss from the compression drop, inefficiency creeping in from all directions __________________ Toyota 86 test driver

11-23-2012, 04:55 PM	#20
civicdrivr Senior Member Join Date: Mar 2012 Drives: 2018 Golf R Location: Richmond, VA Posts: 2,807 Thanks: 5,386 Thanked 1,095 Times in 647 Posts Mentioned: 68 Post(s)	Price? __________________ Parting out HERE

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11-23-2012, 01:55 PM	#18
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11-23-2012, 02:55 PM	#19
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11-23-2012, 06:11 PM	#21
MANDALAY Banned Join Date: Jun 2012 Drives: MR2 Location: AUSTRALIA Posts: 146 Thanks: 3 Thanked 38 Times in 31 Posts Mentioned: 3 Post(s)	9:1 is a great number with many builders using this c/r as a norm for building a safe engine.

11-23-2012, 10:36 PM	#22
jdzumwalt Motor Sports slut Join Date: Sep 2012 Drives: 13 FRS, 2011 f150eco boost, Location: Fallbrook Posts: 262 Thanks: 8 Thanked 65 Times in 30 Posts Mentioned: 3 Post(s)	CP is very good stuff I only use there pistons

11-24-2012, 04:31 PM	#25
MANDALAY Banned Join Date: Jun 2012 Drives: MR2 Location: AUSTRALIA Posts: 146 Thanks: 3 Thanked 38 Times in 31 Posts Mentioned: 3 Post(s)	These would be good only IF the total squish area and volume were either improved or remain untouched. If this wasnt taken into consideration they are just shaved down pistons that are nothing special

12-10-2012, 04:06 PM	#26
No Limit Motorsport Senior Member Join Date: Jul 2012 Drives: 2013 DGM BRZ Location: Long Island, NY Posts: 2,266 Thanks: 355 Thanked 406 Times in 228 Posts Mentioned: 27 Post(s)

12-10-2012, 04:30 PM	#27
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12-11-2012, 05:00 PM	#28
3MI Racing Pro Subie Engine Nerd Join Date: Feb 2012 Drives: empty spot for an FR-S/BRZ Location: Virginia Posts: 96 Thanks: 8 Thanked 36 Times in 19 Posts Mentioned: 1 Post(s)	What's the weight on those Pauters? One thing I can say about Pauter's, having use to special order them in bulk, their tolerances are spot on!!

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