New build recommendations from engine builders/machinists - Page 4 - Subaru Impreza WRX STI Forums: IWSTI.com
STI Forum
Join
Start New Thread Create Account Advertise FAQ Members List Contact
New build recommendations from engine builders/machinists
New build recommendations from engine builders/machinists
Go Back   STI Forums > > > New build recommendations from engine builders/machinists
Reply
 
Thread Tools
Old 07-11-08, 09:13 AM   #31
calisti
Developing Advanced Mastery
Feedback Score: 5 reviews
 
Car: 04 WRB STI
Fav Mod: vf36 now BW8374EFR ext wg
My Threads
Posts: 916
My Subaru Parts for sale

Join Date: Jul 2004
Location: 315 awhp 371 ft/lbs
calisti is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

Got my BC 272 cams and Supertech dual valve spring kit. I was thinking of just replacing the exhaust valves with inconel Supertech valves and using the stock intake valves. I'll replace the intake valves if I can sell some of my parts though.
calisti is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 07-12-08, 11:00 AM   #32
calisti
Developing Advanced Mastery
Feedback Score: 5 reviews
 
Car: 04 WRB STI
Fav Mod: vf36 now BW8374EFR ext wg
My Threads
Posts: 916
My Subaru Parts for sale

Join Date: Jul 2004
Location: 315 awhp 371 ft/lbs
calisti is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

Well I'm going to order the Supertech black nitride intake valves and the inconel exhaust valves. Should I stay standard size or go 1mm larger? No port and polish and will going 1mm shift me to the right more? Will there be a noticeable difference with going 1mm larger?
calisti is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-15-08, 10:44 PM   #33
calisti
Developing Advanced Mastery
Feedback Score: 5 reviews
 
Car: 04 WRB STI
Fav Mod: vf36 now BW8374EFR ext wg
My Threads
Posts: 916
My Subaru Parts for sale

Join Date: Jul 2004
Location: 315 awhp 371 ft/lbs
calisti is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

I just picked up my block today after a 3 wk wait. I had John Edwards talk to CP Piston's tech support to get the right ra numbers for their rings. Cosworth's tech support also recommended an ra of between 20 or lower for the deck surface to have their head gasket seal correctly. So this was the goal when resurfacing the top of the block deck. John also checked the mains for straightness. The crank was sent out to have a .001" clearance on the rod journals. He also balanced the whole rotational assembly to 0.5 gram.

Here's some vids of machinist I used, John Edwards from Costa Mesa R & D:

Honing an STI block
YouTube - Subaru STi Block Honing

Here's another vid from John Edwards of R & D Costa Mesa resurfacing a Subaru SVX block with sleeves:
YouTube - Subaru SVX Sleeved Block Resurfacing

Here's another of his custom 6 qt Subaru oil pan:
YouTube - Subaru Aluminum Oil Pan, etc...

Last edited by calisti; 07-15-08 at 10:53 PM.
calisti is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 07-22-08, 07:20 AM   #34
gabedude
Advanced Mastery Level I
Feedback Score: 0 reviews
 
Fav Mod: ECU
My Subaru Parts for sale

Join Date: Apr 2007
Location: Austin
gabedude is on a distinguished road
Default Re: New build recommendations from engine builders/machinists

Quote:
Originally Posted by calisti View Post
Mike, CP tech support gave me ring gap numbers: top ring .025, 2nd .028, oiling ring .15, and also recommended due to the hardness of the 1st ring the cylinders must have a rough hone. I had my machinist call Mike to get the proper ra (roughness average) numbers and what grit honing stones are required.
That's what I gapped mine to (I was worried that it was too large of a gap) and after removing one head (I installed a comp ring upside down and it was smoking, had to fix that) and re-installing a new ring set on the piston, I noticed the walls with my rough hone were nice and smooth (the rings seated pretty quickly) and the car no longer burned oil. I have ~250 miles on the motor (plus a bunch of idling and revving) and it has a tad bit of slap when cold, but goes away once warmed up. Seems like it is going to be fine. These are ceramic coated CP dropins.
__________________
2007 RomRaided STI - Stage 2 block (CP dropins by me) - Currently in build : lots of goodies such as Kinugawa TD06STS-25GTX 8CM^2 3 inch surge ported inlet, Custom AN lines with Fuelab FPR, 1180CC FIC injectors, Aeromotive stealth pump + Grimmspeed heat coated all the way to turbo + many more minor +2-3 HP mods.

2006 RomRaided STI - Stage 2 block and Stage2 tuned by me + 100K mile club - Wife's car (s/n Tess)

RIP: 02 WRX, 06 WRX

http://www.romraider.com
gabedude is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-25-08, 04:07 AM   #35
viperguy
Advanced Mastery Level II
Feedback Score: 1 reviews
 
Fav Mod: JATO bottle
My Subaru Parts for sale

Join Date: Oct 2005
Location: Trier,Germany
viperguy is on a distinguished road
Default Re: New build recommendations from engine builders/machinists

Quote:
Originally Posted by calisti View Post
Now I'm contemplating on going with the ATP gt35r instead of AVO's ts gt3076r.
Stick with the TS buddy..

Any idea on the cost of your motor?
__________________

MODS: None ..all stock.
viperguy is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-25-08, 10:11 AM   #36
calisti
Developing Advanced Mastery
Feedback Score: 5 reviews
 
Car: 04 WRB STI
Fav Mod: vf36 now BW8374EFR ext wg
My Threads
Posts: 916
My Subaru Parts for sale

Join Date: Jul 2004
Location: 315 awhp 371 ft/lbs
calisti is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

Quote:
Originally Posted by viperguy View Post
Stick with the TS buddy..

Any idea on the cost of your motor?
Once the motor's done I just slap the vf36 back on until AVO comes out with their ts. They came out with a new exhaust housing cast and was sent to the machine shop. Hopefully it'll be out soon. I believe it's already up towards $6500 usd and I don't have everything I want. I'm just trying to spend on parts that wouldn't require pulling the motor again.
calisti is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-25-08, 10:40 AM   #37
BM_STi
Advanced Mastery Level III
Feedback Score: 6 reviews
 
My Subaru Parts for sale

Join Date: Apr 2004
Location: NorCal (916)
BM_STi is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

those videos are awesome! I think I just found my new engine builder.
BM_STi is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-25-08, 07:50 PM   #38
calisti
Developing Advanced Mastery
Feedback Score: 5 reviews
 
Car: 04 WRB STI
Fav Mod: vf36 now BW8374EFR ext wg
My Threads
Posts: 916
My Subaru Parts for sale

Join Date: Jul 2004
Location: 315 awhp 371 ft/lbs
calisti is an unknown quantity at this point
Default Re: New build recommendations from engine builders/machinists

Quote:
Originally Posted by BM_STi View Post
those videos are awesome! I think I just found my new engine builder.
He's highly recommended. John has taught this field for 10 yrs, published a book called the "auto dictionary", and has several other publications.

My mechanic broke the plastic cam gear exhaust sproket on the passenger side even with the right tools. Can that be replaced with a metal gear off of another 2.5 na subie motor?
calisti is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-26-08, 03:42 PM   #39
viperguy
Advanced Mastery Level II
Feedback Score: 1 reviews
 
Fav Mod: JATO bottle
My Subaru Parts for sale

Join Date: Oct 2005
Location: Trier,Germany
viperguy is on a distinguished road
Default Re: New build recommendations from engine builders/machinists

I'm going to sit back and watch.. Mine is due a rebuild.
__________________

MODS: None ..all stock.
viperguy is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 07-28-08, 05:27 AM   #40
gabedude
Advanced Mastery Level I
Feedback Score: 0 reviews
 
Fav Mod: ECU
My Subaru Parts for sale

Join Date: Apr 2007
Location: Austin
gabedude is on a distinguished road
Default Re: New build recommendations from engine builders/machinists

Quote:
Originally Posted by calisti View Post
He's highly recommended. John has taught this field for 10 yrs, published a book called the "auto dictionary", and has several other publications.

My mechanic broke the plastic cam gear exhaust sproket on the passenger side even with the right tools. Can that be replaced with a metal gear off of another 2.5 na subie motor?
I wouldn't do it, even if it fit.
__________________
2007 RomRaided STI - Stage 2 block (CP dropins by me) - Currently in build : lots of goodies such as Kinugawa TD06STS-25GTX 8CM^2 3 inch surge ported inlet, Custom AN lines with Fuelab FPR, 1180CC FIC injectors, Aeromotive stealth pump + Grimmspeed heat coated all the way to turbo + many more minor +2-3 HP mods.

2006 RomRaided STI - Stage 2 block and Stage2 tuned by me + 100K mile club - Wife's car (s/n Tess)

RIP: 02 WRX, 06 WRX

http://www.romraider.com
gabedude is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may post new threads
You may 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


New To Site? Need Help? More

All times are GMT -8. The time now is 07:07 PM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Designed & Powered by Domain Architect
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.