Headwork and some ?'s - TriStateTuners.com :: Home of Tristate Auto Enthusiast

ambitiousCK · 04-20-2010, 08:57 PM

Hello, i was wondering if you could help me with some questions i have. I am wondering what i will have to do to rev higher in my 2005 wrx sti. Plans are a Track series shortblock from raw performance (good for 8500rpms), FP green and supporting mods. MY questions have to do with the heads...what will i need? PnP? valvesprings and retainers? any help will be greatly appreciated. Thanks!

RyanG · 04-22-2010, 01:27 AM

honestly if you are going to spend the money on Rons track block... then just get the matching heads :D

Toyotech · 04-22-2010, 08:19 AM

Quote:

Originally Posted by ambitiousCK

Hello, i was wondering if you could help me with some questions i have. I am wondering what i will have to do to rev higher in my 2005 wrx sti. Plans are a Track series shortblock from raw performance (good for 8500rpms), FP green and supporting mods. MY questions have to do with the heads...what will i need? PnP? valvesprings and retainers? any help will be greatly appreciated. Thanks!

depends on how much over your limiter you're talking but new increased spring rate/retainer set is suitable... other options depend on your set-up and power numbers you're looking for, since you seem to be going the go big or go home direction i would just opt for a built head off the shelf done by a reputable company that already did the runner/bowl work along with new valvetrain components

ambitiousCK · 04-22-2010, 09:55 AM

Well I was going to go big but now the goal is only for 400whp with a fp green and meth. So built heads shouldn't really be needed. I'd like to be able to rev to where I make power, no useless reving if there's no power. The car will be a road course track car acouple times a year and a daily (3000 miles/year). If reving higher would including having to get raws mTching heads I might stick to the 7k redline. Just wanted your guys opinion.

ambitiousCK · 04-22-2010, 10:48 AM

also id only be looking to rev to 7500-8000 (as long as i make power up there)....could i just do valveprings and retainers? or would more be needed? thanks!

ambitiousCK · 04-24-2010, 08:44 AM

Anyone? I'd like to come to you guys (area1320) when I get my motor put in...hence why I specifically came to you guys with my ?'s. Thanks

RyanG · 04-24-2010, 10:26 AM

you would need

cams, springs and retainers, as well as a better oil pump. The issue is oiling at that RPM.. You can rev the stock 2.5 to 7200 easily. If you are doing cams, then might as well do springs

You will easily hit 400whp with a green and meth, last STI we did with that combo hit 432whp.

ambitiousCK · 04-24-2010, 11:13 AM

You make me want to get cams lol I know power is made in the heads so it'd be a good idea just to do it when the motor is out. As far as the oil pump is concerned I was looking at the jdm 12mm oil pump. Would I need something larger such as the cosworth 15mm pump? Also could you give me a rough estimate of how much it would be to do this? You can PM me if you don't want the prices out in the open like that. When you guys install a motor do u tune it for break in or just install it and let it be? thanks again for the help.

ATTI2D · 04-25-2010, 07:38 PM

Just do the cams. I had the lilttle BC 272's on my 20g setup and it kicked ass all the way to 7k, I loved it.

ambitiousCK · 04-26-2010, 11:13 AM

Sounds like a plan to me

04-20-2010, 08:57 PM	#1
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	Headwork and some ?'s Hello, i was wondering if you could help me with some questions i have. I am wondering what i will have to do to rev higher in my 2005 wrx sti. Plans are a Track series shortblock from raw performance (good for 8500rpms), FP green and supporting mods. MY questions have to do with the heads...what will i need? PnP? valvesprings and retainers? any help will be greatly appreciated. Thanks! __________________ Pain is necessary, suffering is optional. *CK*

04-22-2010, 01:27 AM	#2
RyanG Tri-State Post Whore Join Date: Jan 2005 Location: Easton, PA Member #63 iTrader: (1)	honestly if you are going to spend the money on Rons track block... then just get the matching heads :D __________________ I am Area1320 To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

04-22-2010, 09:55 AM	#4
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	Well I was going to go big but now the goal is only for 400whp with a fp green and meth. So built heads shouldn't really be needed. I'd like to be able to rev to where I make power, no useless reving if there's no power. The car will be a road course track car acouple times a year and a daily (3000 miles/year). If reving higher would including having to get raws mTching heads I might stick to the 7k redline. Just wanted your guys opinion. __________________ Pain is necessary, suffering is optional. *CK*

04-22-2010, 10:48 AM	#5
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	also id only be looking to rev to 7500-8000 (as long as i make power up there)....could i just do valveprings and retainers? or would more be needed? thanks! __________________ Pain is necessary, suffering is optional. *CK*

04-24-2010, 08:44 AM	#6
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	Anyone? I'd like to come to you guys (area1320) when I get my motor put in...hence why I specifically came to you guys with my ?'s. Thanks __________________ Pain is necessary, suffering is optional. *CK*

04-24-2010, 10:26 AM	#7
RyanG Tri-State Post Whore Join Date: Jan 2005 Location: Easton, PA Member #63 iTrader: (1)	you would need cams, springs and retainers, as well as a better oil pump. The issue is oiling at that RPM.. You can rev the stock 2.5 to 7200 easily. If you are doing cams, then might as well do springs You will easily hit 400whp with a green and meth, last STI we did with that combo hit 432whp. __________________ I am Area1320 To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

04-24-2010, 11:13 AM	#8
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	You make me want to get cams lol I know power is made in the heads so it'd be a good idea just to do it when the motor is out. As far as the oil pump is concerned I was looking at the jdm 12mm oil pump. Would I need something larger such as the cosworth 15mm pump? Also could you give me a rough estimate of how much it would be to do this? You can PM me if you don't want the prices out in the open like that. When you guys install a motor do u tune it for break in or just install it and let it be? thanks again for the help. __________________ Pain is necessary, suffering is optional. *CK*

04-25-2010, 07:38 PM	#9
ATTI2D Tri-State Aficionado Join Date: Dec 2007 Location: Easton PA Member #6408 My Ride: 04 JBP STi iTrader: (0)	Just do the cams. I had the lilttle BC 272's on my 20g setup and it kicked ass all the way to 7k, I loved it.

04-26-2010, 11:13 AM	#10
ambitiousCK Tri-State Post Whore Join Date: Oct 2009 Location: Reading PA Member #14943 My Ride: 2016 Jaguar F-Type R/2015 Hyundai Accent Sport (6MT)/2023 Chevrolet Traverse LT/2002 Yukon LT iTrader: (12)	Sounds like a plan to me __________________ Pain is necessary, suffering is optional. *CK*

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Headwork/motorwork in LV	Sgt. Pepper	Networking: requests and offers	3	01-04-2009 11:13 PM