| View previous topic :: View next topic |
| Author |
Message |
endwrench
Joined: 07 Dec 2002
Posts: 1631
Location: Victor, Montana
|
 Posted: Sun Jan 27, 2008 10:13 am Post subject: |
 |
|
Oh, don't worry, we're still reading the updates!
Do you think you'll have any clearance problems with that alternator? Maybe now is the time to graft an aisin style alternator on there.
Todd
_________________
'79 924NA. Rebuilt 9.5:1, MSDS header, Mega Squirt Injection, MJLJ-EDIS Ignition, 1.6L Whipple Charger and Intercooler, 10lbs Boost, 944 Trans, Custom HD Clutch.
"simsport" said....superchargers are better than turbos its official!.... |
|
| Back to top |
|
 |
PwrGTOGuy
Joined: 23 Jun 2007
Posts: 194
Location: Middletown, PA
|
| Posted: Sun Jan 27, 2008 11:31 am Post subject: |
|
|
| endwrench wrote: | Oh, don't worry, we're still reading the updates!
Do you think you'll have any clearance problems with that alternator? Maybe now is the time to graft an aisin style alternator on there.
Todd |
I had major clearance issues with the stock alternator location. I had to modify the original a/c alternator mount. I have the old alt. mounted in the location where the A/C compressor bracket would have mounted....
I will probably purchase a new alternator and check for that clearance. Do you see a problem with how I have it now? That is about where my old a/c compressor sat.? |
|
| Back to top |
|
|
PwrGTOGuy
Joined: 23 Jun 2007
Posts: 194
Location: Middletown, PA
|
| Posted: Sun Jan 27, 2008 11:40 am Post subject: |
|
|
| Rasta Monsta wrote: | | How many cc's each are those runners (including TB)? |
Not sure on the ITB manifold.
The ITB bore is 45 mm and it is about 5 inches long |
|
| Back to top |
|
|
morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
|
| Posted: Sun Jan 27, 2008 5:41 pm Post subject: |
|
|
that exhaust manifold ideea does not look good to me.
_________________
Supercharger and EFI kits
https://www.the924.com |
|
| Back to top |
|
|
PwrGTOGuy
Joined: 23 Jun 2007
Posts: 194
Location: Middletown, PA
|
| Posted: Sun Jan 27, 2008 9:52 pm Post subject: |
|
|
| morghen wrote: | | that exhaust manifold ideea does not look good to me. |
What do you see wrong with it? |
|
| Back to top |
|
|
morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
|
| Posted: Sun Jan 27, 2008 10:13 pm Post subject: |
|
|
well imagine the gas coming out of lets say piston 2...hiting the pipe wall 90° to it...dont you think that the ideea is a bit rough? put some smoke trough an vacumecleaner and point directly at a wall or 90° to a inner pipe profile...the gas will go both ways left and right. So what i'm saying is that when piston eliminates gas maby half of it will go in the oposite direction of the turbo because none of the other cyls are eliminating gas at that moment....my guess is that an exhaust gallery like that would overheat and crack very fast...and would give poor performance.
_________________
Supercharger and EFI kits
https://www.the924.com |
|
| Back to top |
|
|
PwrGTOGuy
Joined: 23 Jun 2007
Posts: 194
Location: Middletown, PA
|
| Posted: Mon Jan 28, 2008 9:11 am Post subject: |
|
|
| morghen wrote: | | well imagine the gas coming out of lets say piston 2...hiting the pipe wall 90° to it...dont you think that the ideea is a bit rough? put some smoke trough an vacumecleaner and point directly at a wall or 90° to a inner pipe profile...the gas will go both ways left and right. So what i'm saying is that when piston eliminates gas maby half of it will go in the oposite direction of the turbo because none of the other cyls are eliminating gas at that moment....my guess is that an exhaust gallery like that would overheat and crack very fast...and would give poor performance. |
Well I don't disagree. I was just curious as to what you saw. The manifold may not be of the greatest design, but honestly, the manifold and turbo are just temporary until I develop (and afford) an upgrade. Basically, it will be there to get the car on the road, I do not plan on heavy, high boost performance driving.... |
|
| Back to top |
|
|
dpw928
Joined: 02 Nov 2002
Posts: 1860
Location: owasso, ok 74055
|
| Posted: Tue Jan 29, 2008 12:36 am Post subject: |
|
|
Agree with Morghen. That configuration will cause a lot of back pressure which will cause a loss of power, overheating and rough or no idle. If the outlet tubes were expanded ( / \ ) to allow flow both ways (except #1) the flow would be much better.
Dennis
_________________
81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black |
|
| Back to top |
|
|
macBdog
Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia
|
| Posted: Tue Jan 29, 2008 10:08 am Post subject: |
|
|
I agree that manifold design will flow pretty poorly. I went for a log manifold but used elbows to force the gas to flow towards the outlet checkitout:
_________________
1979 931 with a 350 chev
1973 911E with EFI
| p-talk wrote: | I'm still convinced the word 'Porsche' makes people crazy in all kinds of ways  |
|
|
| Back to top |
|
|
morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
|
| Posted: Tue Jan 29, 2008 6:12 pm Post subject: |
|
|
this looks better.
_________________
Supercharger and EFI kits
https://www.the924.com |
|
| Back to top |
|
|
moone924
Joined: 05 Feb 2003
Posts: 868
Location: Douglas Wyoming
|
| Posted: Tue Mar 24, 2009 7:18 am Post subject: |
|
|
What ever happened with this project? Didn't he sell all the engine parts and part the car?
Who ended up with the ITB set-up ?
_________________
Ryan Moone
Always shopping for a nice s2 931 to baby.
New philosophy : one car project at a time. |
|
| Back to top |
|
|
ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
|
| Posted: Tue Mar 24, 2009 7:59 am Post subject: |
|
|
IIRC, Pat traded the complete powerplant including ITBs with a VW guy out in Cali in exchange for an electric / battery conversion "kit".
_________________
erstwhile owner of just about every 924 variant ever made |
|
| Back to top |
|
|
Ron Henderson
Joined: 06 Jan 2009
Posts: 21
Location: San Clemente, CA
|
| Posted: Wed Mar 25, 2009 8:47 am Post subject: Similar restoration |
|
|
I'm in Southern California with a similar restoration project--let me know if we can help
_________________
Ron Henderson
Kaman Industrial Technologies
951-312-1625 cell |
|
| Back to top |
|
|
ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
|
| Posted: Wed May 06, 2009 9:36 pm Post subject: |
|
|
| ideola wrote: | | IIRC, Pat traded the complete powerplant including ITBs with a VW guy out in Cali in exchange for an electric / battery conversion "kit". |
I just remembered, the guy Pat traded his stuff to is Robert Mink, works at VW, has a profile here but doesn't come around much any more. His profile indicates he is in Orange County.
_________________
erstwhile owner of just about every 924 variant ever made |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
