Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
resident samsquamch
 
sand_man's Avatar
 
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
Quote:
Originally Posted by Alan L View Post
Sometimes life sucks. But I still find them more consistent than women.
Regards
Alan
No truer words have been spoken...
__________________
-jeff
back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 11-21-2008, 02:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #61 (permalink)
Forced Induction Junkie
 
WERK I's Avatar
 
Join Date: Jan 2003
Location: Wisconsin
Posts: 3,298
Garage
Don,
Were there any other cylinders that had bad valves/guides or was #3 the only one?
__________________
Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 11-21-2008, 04:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #62 (permalink)
Wo ist die Rennstrecke?
 
DonE's Avatar
 
Join Date: Mar 2004
Location: Brooks, GA
Posts: 1,211
4 of 6 heads had trashed guides, both intake and exhaust. The valve stems were trashed as well but they sealed just fine on their seats - compression and leakdown tests were all good. The only explanation given was bad guide material.
Old 11-21-2008, 04:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #63 (permalink)
Will program for food
 
ghnat's Avatar
 
Join Date: Feb 2004
Location: Clarkston, GA USA
Posts: 827
Garage
Don,
Any updates?
__________________
Greg Hnat
87 Targa Disassembled
90 944 S2 Auto-x, DE and semi-daily driver
98 Jeep Cherokee
Old 12-18-2008, 06:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #64 (permalink)
Wo ist die Rennstrecke?
 
DonE's Avatar
 
Join Date: Mar 2004
Location: Brooks, GA
Posts: 1,211
Picking up the heads in FL while on vacation next week. I should have it back together around new years day. Let's see if I can top more than 5000 miles before I take it out again.
Old 12-18-2008, 06:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #65 (permalink)
Will program for food
 
ghnat's Avatar
 
Join Date: Feb 2004
Location: Clarkston, GA USA
Posts: 827
Garage
What part of FL? I'll be in Tampa and Hernando next week...
I'll need some head work as well. Maybe you can give me a contact???
Has the studying finished?
__________________
Greg Hnat
87 Targa Disassembled
90 944 S2 Auto-x, DE and semi-daily driver
98 Jeep Cherokee
Old 12-18-2008, 06:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #66 (permalink)
 
Wo ist die Rennstrecke?
 
DonE's Avatar
 
Join Date: Mar 2004
Location: Brooks, GA
Posts: 1,211
Bill at Xtreme Cylinder Heads in Palm City FL. One more test in early Jan (CRPC) and I hope I'm done. Waiting on results from CFP exam (takes 6 weeks).
Old 12-18-2008, 06:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #67 (permalink)
After the next project
 
x98boardwell's Avatar
 
Join Date: Sep 2006
Location: Central Valley, CA
Posts: 1,522
Garage
Yoh!

Don,

My buddy just went for the week long course in November to Dallas for the study session for that test which he has also now taken. He is waiting the results. CFP, here you come. Best of luck.

Bryan
Old 12-19-2008, 07:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #68 (permalink)
Cynical Misanthrope
 
AFM744's Avatar
 
Join Date: Dec 2001
Location: Campbell, CA
Posts: 382
Send a message via Yahoo to AFM744
Quote:
Originally Posted by DonE View Post
4 of 6 heads had trashed guides, both intake and exhaust. The valve stems were trashed as well but they sealed just fine on their seats - compression and leakdown tests were all good. The only explanation given was bad guide material.
Don, do you know which guides your previous machinist installed? Also, which stem seals did you use? Obviously these guides should be blacklisted.
I thought my exhaust guides were bad, with about 1mm clearance at 89k mi. Then at German Precision I saw some reeeeally worn guides, like you could put an extra valve or two in there!
__________________
X-1, AFM744, Jon, '92 C2 Turbo
JE 8:1 pistons, 964 cams, 38mm intakes ported/polished/twinplugged, ARP hardware, B&B headers/exhaust, 355whp. Full-blown GT35R 3.2 intake EFI pending...
Where my misspent time and money is currently going.

Last edited by AFM744; 12-19-2008 at 08:04 AM..
Old 12-19-2008, 08:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #69 (permalink)
Wo ist die Rennstrecke?
 
DonE's Avatar
 
Join Date: Mar 2004
Location: Brooks, GA
Posts: 1,211
I picked up my heads from Xtreme Cylinder Heads in Palm City FL this afternoon. Below are some pics of one of the heads, and a pic of the trashed valves (intake and exhaust).

The valves are custom stainless steel intake and inconel exhaust valves, both turned from blanks. The guides are manganese/bronze. The inconel valves cost $25 for the blanks and $25 to custom machine each. Stock exhaust valves are $48 each. The custom stainless intake valves cost $42 each (blanks plus machining) compared to $50 for stock.



The springs had to be replaced because of the new custom valves and their retainer positions. They are Elgin springs with titanium retainers. You'll see the top of the stems are a bit higher off the retainers than stock.



Here are the old intake and exhaust valves cleaned up, but clearly show severe wear. The intake valve has a ridge cut in it at the top of travel. The stems feel as if they where sanded with 50 grit sandpaper.



The engine should be back together around Jan 1.
Old 12-22-2008, 02:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #70 (permalink)
Wo ist die Rennstrecke?
 
DonE's Avatar
 
Join Date: Mar 2004
Location: Brooks, GA
Posts: 1,211
Here's the engine on the stand. You can see that I've packed the turbo shield with new insulation. After I took this pic, I joined the tranny and motor, so tomorrow it goes in the car.


Old 01-12-2009, 06:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #71 (permalink)
Cynical Misanthrope
 
AFM744's Avatar
 
Join Date: Dec 2001
Location: Campbell, CA
Posts: 382
Send a message via Yahoo to AFM744
Quote:
Originally Posted by done View Post
...so tomorrow it goes in the car.
woot!!!
__________________
X-1, AFM744, Jon, '92 C2 Turbo
JE 8:1 pistons, 964 cams, 38mm intakes ported/polished/twinplugged, ARP hardware, B&B headers/exhaust, 355whp. Full-blown GT35R 3.2 intake EFI pending...
Where my misspent time and money is currently going.
Old 01-12-2009, 07:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #72 (permalink)
Will program for food
 
ghnat's Avatar
 
Join Date: Feb 2004
Location: Clarkston, GA USA
Posts: 827
Garage
Alright, can't wait to see the beast again...
__________________
Greg Hnat
87 Targa Disassembled
90 944 S2 Auto-x, DE and semi-daily driver
98 Jeep Cherokee
Old 01-12-2009, 08:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #73 (permalink)
Registered User
 
purplehaze's Avatar
 
Join Date: May 2005
Location: Waiting to pass you, or Sebastopol CA
Posts: 349
Nice work, Don!

Looking forward to seeing it back in your car.

When I think I've had a bad day, I just think of the ***** you've been through, and it puts it all in perspective.
__________________
Glenn
87' 930TT
Old 01-13-2009, 06:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #74 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:47 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.