hybrid question (not hg or cam questions btw)

AWDWRXLOVER · 05-11-2009, 10:57 AM

heres my setup
2.5 with 100mm cps/eagle rods/acl bearings
2.0 heads with cometic .051 hg and sti cams
sr55 w/ forge wg actuator
pe800s
coolingmist stg2
avcr
injen sri
injen fmic(yes i know its too small but am not allowed to get a new one as of right now

)
helix dp
greddy evo 2
06 six speed 5-114 w/brembos

i did break in for 750 miles. i had my tuner remove the rev limit he put on during break in. my question is what is safe to rev to(fuel cut is 7400 right now)? by safe i mean 100% no worries what so ever safe. the car is only at 15psi right now on 91 w/o meth. should i stay in the 7500 range?

* Registered users of the site do not see these ads.

25rsti · 05-11-2009, 11:20 AM

i dont know it all what so ever, but i have done tons of research. From what ive read, our cars (subies) arent built for high revving. Your setup IS built compared to factory setups, but i doubt your going to get much up top anyways. just my .02. Hope some other more experienced members can chime in.

Artie@Agile Auto · 05-11-2009, 01:09 PM

I would not push it farther then stock rev limit. You do not have anything in your build that will support high rev. Where is your hp peaks?(rpm)

3MI Racing · 05-11-2009, 02:00 PM

Quote:

Originally Posted by Artie@Agile Auto

I would not push it farther then stock rev limit. You do not have anything in your build that will support high rev. Where is your hp peaks?(rpm)

+2 on both accounts.
I also see you have an 02 and that would mean you have shim over buckets for cam lash...those and high RPM aren't exactly friends

AWDWRXLOVER · 05-11-2009, 03:03 PM

i havent had it on the dyno yet. should i lower the redline to 7200 then? the car is daily driver and must be reliable so im not worried about maxing it out anyways.

Gixxer1K · 05-11-2009, 03:35 PM

Quote:

Originally Posted by 3MI Racing

+2 on both accounts.
I also see you have an 02 and that would mean you have shim over buckets for cam lash...those and high RPM aren't exactly friends

How do you figure that? My bike motors all have shim over bucket.

kellygnsd · 05-11-2009, 03:39 PM

Quote:

Originally Posted by Gixxer1K

How do you figure that? My bike motors all have shim over bucket.

And they have a lot lighter valvetrains and they are not Subaru motors.

Artie@Agile Auto · 05-11-2009, 03:53 PM

Very good question. As long as there is no valve floating, shim over bucket is OK. However people will switch to shimless buckets to reduce weight of the valve tain thus being able to rev higher.

Artie

05-11-2009, 10:57 AM	#1
AWDWRXLOVER Scooby Specialist Member#: 50267 Join Date: Dec 2003 Chapter/Region: SWIC Vehicle: 02 built hybrid sr55/meth/sick speed	hybrid question (not hg or cam questions btw) heres my setup 2.5 with 100mm cps/eagle rods/acl bearings 2.0 heads with cometic .051 hg and sti cams sr55 w/ forge wg actuator pe800s coolingmist stg2 avcr injen sri injen fmic(yes i know its too small but am not allowed to get a new one as of right now) helix dp greddy evo 2 06 six speed 5-114 w/brembos i did break in for 750 miles. i had my tuner remove the rev limit he put on during break in. my question is what is safe to rev to(fuel cut is 7400 right now)? by safe i mean 100% no worries what so ever safe. the car is only at 15psi right now on 91 w/o meth. should i stay in the 7500 range? * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Strange WRX Hybrid Noise, not ticking or knocking.	alex02wrx	Built Motor Discussion	3	12-10-2009 04:32 PM
building a hybrid..cam question.	ricky05	Built Motor Discussion	14	09-29-2008 08:32 PM
Hybrid build not reaching or holding target boost.	Starch	Built Motor Discussion	4	09-10-2008 05:22 PM
2.5L hybrid, retarding intake cams question	Turbo_Mike	Built Motor Discussion	20	01-06-2008 02:56 AM
Hybrid Cams Question	thejean	Built Motor Discussion	8	01-16-2007 09:29 PM

05-11-2009, 11:20 AM	#2
25rsti Scooby Guru Member#: 166324 Join Date: Dec 2007 Chapter/Region: NESIC Location: Haverhill, MA Vehicle: 02 V8 Spec C 03 V9 Limited 2013 Legacy	i dont know it all what so ever, but i have done tons of research. From what ive read, our cars (subies) arent built for high revving. Your setup IS built compared to factory setups, but i doubt your going to get much up top anyways. just my .02. Hope some other more experienced members can chime in.

05-11-2009, 01:09 PM	#3
Artie@Agile Auto Scooby Newbie Member#: 189490 Join Date: Sep 2008 Chapter/Region: MAIC Location: Baltimore, MD	I would not push it farther then stock rev limit. You do not have anything in your build that will support high rev. Where is your hp peaks?(rpm)

05-11-2009, 03:03 PM	#5
AWDWRXLOVER Scooby Specialist Member#: 50267 Join Date: Dec 2003 Chapter/Region: SWIC Vehicle: 02 built hybrid sr55/meth/sick speed	i havent had it on the dyno yet. should i lower the redline to 7200 then? the car is daily driver and must be reliable so im not worried about maxing it out anyways.

05-11-2009, 03:53 PM	#8
Artie@Agile Auto Scooby Newbie Member#: 189490 Join Date: Sep 2008 Chapter/Region: MAIC Location: Baltimore, MD	Very good question. As long as there is no valve floating, shim over bucket is OK. However people will switch to shimless buckets to reduce weight of the valve tain thus being able to rev higher. Artie