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 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rating: Thread Rating: 2 votes, 5.00 average.
Author
Thread Post New Thread    Reply
Registered User
 
camgrinder's Avatar
 
Join Date: Feb 2004
Location: California
Posts: 921
About this time last year there was a post with a lot of good rod/stroke info..
Camshaft Selection -- First Draft
__________________
John Dougherty
Dougherty Racing Cams
Old 09-30-2005, 09:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #41 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,729
Quote:
Originally posted by camgrinder
About this time last year there was a post with a lot of good rod/stroke info..
Camshaft Selection -- First Draft
Whoa...no kidding! Killer info.
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 09-30-2005, 09:27 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #42 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 721
Quote:
Originally posted by Henry Schmidt
At 8500 this gets fuel yardage not mileage.
Joking aside, this engine like all other MFI engines is very thirsty.
I don't have any real fuel consumption numbers but I would guess 8-12 depending on right foot flexibility.
Henry, Why don't you test a Motronic fuel injection system (from 3.2 carrera) on your 2.8SS to see how it performs, and measure fuel mileage? (Can Motronic handle 8500rpm?)
Old 10-01-2005, 09:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #43 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 6,028
Garage
I like MFI, always have, always will.
I'll leave the EFI engine development to those people who like it.
Fuel milaege does not interest me much.

" the fastest way to go broke in business is to get an ever growing percentage of an ever shrinking market"

Money must not be the primary motivation.

__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net
Old 10-01-2005, 10:39 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #44 (permalink)
up-fixing der car(ma)
 
YTNUKLR's Avatar
 
Join Date: Aug 2002
Location: Fremont, CA
Posts: 3,743
Garage
Send a message via AIM to YTNUKLR
Henry, what did you set the deck height @ on the 2.8SS ?

Thanks, Scott
__________________
Scott Kinder
kindersport @ gmail.com
Old 10-15-2005, 11:55 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #45 (permalink)
Registered User
 
Join Date: Oct 2004
Location: minneapolis MN
Posts: 463
Henry - howz about posting a link with some video and soundtrack to one of your creations!! I'm sure more than a few of us would like to meditate to that!
Nabil
__________________
'71 S track car, 2.7L & Webers forever!
Old 10-17-2005, 08:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #46 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 6,028
Garage
Quote:
Originally posted by nabilious
Henry - howz about posting a link with some video and soundtrack to one of your creations!! I'm sure more than a few of us would like to meditate to that!
Nabil
Meditate? It sounds to me like pornography.
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net
Old 10-18-2005, 07:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #47 (permalink)
Registered User
 
Join Date: Oct 2004
Location: minneapolis MN
Posts: 463
We all have our weakness!!
Old 10-18-2005, 07:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #48 (permalink)
Registered User
 
speedingbullitt's Avatar
 
Join Date: Aug 2004
Location: NW New Jersey
Posts: 82
Henry,

How would one differentiate between a 2.2 S crank and one from an E or T??

Thanks!
__________________
Steve Benitz
Old 10-18-2005, 07:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #49 (permalink)
up-fixing der car(ma)
 
YTNUKLR's Avatar
 
Join Date: Aug 2002
Location: Fremont, CA
Posts: 3,743
Garage
Send a message via AIM to YTNUKLR
2.2S and E are the same.
pic:
2.0/2.2l Counterbalanced Crank Blowout At $575 Shipped

The 2.2T crank does not have counterweights, the flanges of dark metal that hang off opposite each journal. BTW, that one is still available.

Best regards, Scott
__________________
Scott Kinder
kindersport @ gmail.com
Old 10-18-2005, 07:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #50 (permalink)
Registered User
 
jluetjen's Avatar
 
Join Date: Oct 2001
Location: Westford, MA USA
Posts: 8,596
Garage
Wow! Cool thread. There's not much that I feel that I can add at this point.

Although I wonder if some of the difference in performance between short stroke and the long stroke 911ST motors might be due to the increase rod angularity that Henry describes above. On the other hand, one of the benefits of "longer" stroked motors that Porsche's designers have always appeared to have been sensitive to is that with a "longer" stroke motor it's possible to have a more compact combustion chamber (specifically, by this I mean that the surface area to volume ratio is smaller) which results in improved combustion, reduced emissions and reduced ignition timing for a given level of performance.

Just some unquantified thoughts.
__________________
John
'69 911E

"It's a poor craftsman who blames their tools" -- Unknown
"Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman

Last edited by jluetjen; 10-21-2005 at 09:43 AM..
Old 10-19-2005, 05:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #51 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 721
Quote:
Originally posted by YTNUKLR
Henry, what did you set the deck height @ on the 2.8SS ?

Thanks, Scott
Well?
Old 10-19-2005, 12:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #52 (permalink)
 
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 6,028
Garage
.040 DECK HEIGHT
AND .070 VALVE TO PISTON CLEARANCE.
THIS IS THE SAME FOR ALL OUR HIGH PERFORMANCE ENGINE.
MOST ENGINE BUILDERS HAVE A SERIES OF NUMBERS THAT THEY ARE COMFORTABLE AND IN MY CASE THESE ARE THEM? THEY? IT? MINE
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net

Last edited by Henry Schmidt; 10-19-2005 at 03:11 PM..
Old 10-19-2005, 01:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #53 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 721
Henry, I understand that you've used JE pistons for this application but is Mahle P&C's 95mm available for such a application? If so, what's the part #?
Old 10-21-2005, 09:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #54 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 6,028
Garage
Mahle does not make a piston specifically designed for this engine configuration.
They do make a 10.5 to 1 compression, 3.0 RSR piston that you can order in a cylinder with SC bolt spacing that will work for a 2.8 SS engine. Part # from Andial is AND 10398495
Keep in mind that a 10.5 to 1, 3.0 piston was designed for a 70.4mm crank so when you install it on a 66mm crank you will loose static compression.
I have measured a loss from .5 to .58 reduction in comp. ratio when doing this conversion.
10.5 to 1 will now be as high as 10.0 to 1 and as low as 9.9 to 1.

With this engine as with all other engines of custom configuration, if compression ratio is important to you, you must measure it.
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net
Old 10-21-2005, 09:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #55 (permalink)
Registered User
 
speedingbullitt's Avatar
 
Join Date: Aug 2004
Location: NW New Jersey
Posts: 82
Henry Thanks for all the information!!

In your opinion is the mahle 3.0 RSR in which you listed the andial p/n for superior to the JE piston for longevity? Would you recommend the mahle over the JE? I am sure there is a big cost difference, but might there be any other reasons to use/ not use the mahle 3.0 RSR set?

Thanks again!
__________________
Steve Benitz
Old 10-21-2005, 10:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #56 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,729
What about Cosworth pistons in terms of longevity when compared to Mahle? Aren't Cosworth's about the same price?
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 10-21-2005, 10:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #57 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 721
Quote:
Originally posted by Henry Schmidt
They do make a 10.5 to 1 compression, 3.0 RSR piston that you can order in a cylinder with SC bolt spacing that will work for a 2.8 SS engine. Part # from Andial is AND 10398495.
What its cylinder wall thickness?
Is it CE ring groove delete?
Old 10-21-2005, 10:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #58 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 6,028
Garage
Quote:
Originally posted by blue72s
What its cylinder wall thickness?
Is it CE ring groove delete?
Cylinder wall thickness is stock for 95 mm SC or Carrera.
CE ring is optional. Either way.
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net
Old 10-21-2005, 12:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #59 (permalink)
Registered User
 
Walt Fricke's Avatar
 
Join Date: May 2004
Location: Boulder, Colorado
Posts: 5,243
Porsche Crest Re: IT'S DONE

[QUOTE]Originally posted by Henry Schmidt
[B] AFTER OVER A YEAR IT'S DONE

2.8 SHORT STROKE 66 MM STROKE 95 MM BORE

THIS BAD BOY SHOULD MAKE 300+ HORSE POWER AND TURN 8500 RPM

Henry - has this bad boy been on a dyno of some sort by now? Any numbers you can share?

Walt Fricke

(slowly building a similar engine with 3.2 heads and wondering particularly what cam to use, though my pistons are cut for more like 12/1 which might change things)
Old 10-21-2005, 04:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #60 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 03:06 AM.


 
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.