Welcome to the North American Subaru Impreza Owners Club Wednesday October 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 07-07-2008, 03:06 PM   #1
avi1777
Scooby Newbie
 
Member#: 147652
Join Date: Apr 2007
Vehicle:
02 sti
white

Default cams

will i feel a major diference if i will put 272 cams(kelford) on a build sti with gt35r?
i understood that the stock cams are good but the 272 will work the gt35 much better
does it worth the time and money?
thanks
* Registered users of the site do not see these ads.
avi1777 is offline   Reply With Quote
Old 07-07-2008, 03:14 PM   #2
jays05
Scooby Specialist
 
Member#: 78165
Join Date: Dec 2004
Chapter/Region: South East
Location: SC
Vehicle:
05 STI 35r + e85

Default

You are opening up a big old can of worms. The cams will be very beneficial. You will most likely need to replace a lot of valve buckets and/or have the valvestems ground down to get the valve lash in spec. You should replace the springs/retainers as well, and your fuel system might need to be upgraded to handle the extra high rpm airflow.
jays05 is offline   Reply With Quote
Old 07-07-2008, 05:35 PM   #3
avi1777
Scooby Newbie
 
Member#: 147652
Join Date: Apr 2007
Vehicle:
02 sti
white

Default

thanks
avi1777 is offline   Reply With Quote
Old 07-07-2008, 09:05 PM   #4
blue05
Scooby Newbie
 
Member#: 125144
Join Date: Sep 2006
Chapter/Region: SCIC
Location: SoCal, LA that is.
Vehicle:
2005 wrx STi
wrb

Default

My buddy has the kelford 272's on his 2.5 with a perrin 35r kit. He is friends with a very reputable northern pacific area tuner, that has tuned an exact copy of his car with the only difference being the 272's. His car with the cams made 50+ more hp and about the same amount more torque. Yes the powerband did shift a little but not much. He only revs to 7500rpm. Plus, if you have a quiet catback you don't even notice the car has cams, even more so with equal length headers. I plan on using the kelford 272's as well now that I know they are so mild mannered.
blue05 is offline   Reply With Quote
Old 07-07-2008, 09:51 PM   #5
blue05
Scooby Newbie
 
Member#: 125144
Join Date: Sep 2006
Chapter/Region: SCIC
Location: SoCal, LA that is.
Vehicle:
2005 wrx STi
wrb

Default

Quote:
Originally Posted by jays05 View Post
You are opening up a big old can of worms. The cams will be very beneficial. You will most likely need to replace a lot of valve buckets and/or have the valvestems ground down to get the valve lash in spec. You should replace the springs/retainers as well, and your fuel system might need to be upgraded to handle the extra high rpm airflow.
^^yes^^
I forgot to mention. He also installed new springs/retainers (I think it was a bc set) and had the valve tips ground to get the correct lash.
blue05 is offline   Reply With Quote
Old 07-07-2008, 11:43 PM   #6
kellygnsd
Scooby Guru
 
Member#: 32669
Join Date: Feb 2003
Chapter/Region: SCIC
Location: Rancho C
Vehicle:
2007 2.34LR, EFR7670
LINK G4 hybrid STi

Default

Quote:
Originally Posted by blue05 View Post
My buddy has the kelford 272's on his 2.5 with a perrin 35r kit. He is friends with a very reputable northern pacific area tuner, that has tuned an exact copy of his car with the only difference being the 272's. His car with the cams made 50+ more hp and about the same amount more torque. Yes the powerband did shift a little but not much. He only revs to 7500rpm. Plus, if you have a quiet catback you don't even notice the car has cams, even more so with equal length headers. I plan on using the kelford 272's as well now that I know they are so mild mannered.
Are you talking about the 272 AVCS cams? Just wondering because my 272's w/ Kelford ground lope like a mother(non-AVCS)
kellygnsd is offline   Reply With Quote
Old 07-08-2008, 08:08 AM   #7
avi1777
Scooby Newbie
 
Member#: 147652
Join Date: Apr 2007
Vehicle:
02 sti
white

Default

Quote:
Originally Posted by blue05 View Post
My buddy has the kelford 272's on his 2.5 with a perrin 35r kit. He is friends with a very reputable northern pacific area tuner, that has tuned an exact copy of his car with the only difference being the 272's. His car with the cams made 50+ more hp and about the same amount more torque. Yes the powerband did shift a little but not much. He only revs to 7500rpm. Plus, if you have a quiet catback you don't even notice the car has cams, even more so with equal length headers. I plan on using the kelford 272's as well now that I know they are so mild mannered.
did you mean 50whp or 50hp?
avi1777 is offline   Reply With Quote
Old 07-08-2008, 11:04 AM   #8
dmross
Scooby Specialist
 
Member#: 2818
Join Date: Nov 2000
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2000 2.5RS

Default

Quote:
Originally Posted by kellygnsd View Post
Are you talking about the 272 AVCS cams? Just wondering because my 272's w/ Kelford ground lope like a mother(non-AVCS)
+1

My non-AVCS Kelfords lope like mad... and I love it.

I picked up 80whp changing from STI 5/6 cams (EJ207 heads).
dmross is offline   Reply With Quote
Old 07-08-2008, 11:06 AM   #9
dmross
Scooby Specialist
 
Member#: 2818
Join Date: Nov 2000
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2000 2.5RS

Default

Quote:
Originally Posted by kellygnsd View Post
Are you talking about the 272 AVCS cams? Just wondering because my 272's w/ Kelford ground lope like a mother(non-AVCS)
+1

My non-AVCS Kelford 272s lope like mad... and I love it.

I picked up 80whp changing from STI 5/6 cams (EJ207 heads).
dmross is offline   Reply With Quote
Reply

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
closed subydude02 Engine/Power/Exhaust 41 08-11-2010 08:29 AM
Scorpion cam. Cow cam. Coyote Cam. Frog cam. Jessie James Off-Topic 3 08-31-2009 01:50 PM
Cams, Cams, and More Cams impr25rs Normally Aspirated Powertrain 35 03-25-2008 08:31 PM
turbo cams or n/a cams flent Normally Aspirated Powertrain 19 04-02-2001 09:00 AM


All times are GMT -4. The time now is 01:30 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.