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 Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jul 2002
Location: Sydney, Australia
Posts: 2,443
Distributor options for 3.2 with DME removed

Doing some project musing...

Is there a "drop-in" distr that would suit a 3.2 with the DME removed and running carbs? Looking to convert a stock 85 3.2 to early style fuel and ignition to run in classic events.
__________________
Cheers, Ryan
1969 911E (historic racer)
911ST replica (tarmac rally)
Old 11-30-2005, 04:44 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Look for a '76 Turbo distributor.

Those are breakerless units that will slip right in. I'd suggest that the advance curve be redone since they are optimized for a Turbo motor.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 11-30-2005, 10:08 AM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Jul 2002
Location: Sydney, Australia
Posts: 2,443
thanks steve
__________________
Cheers, Ryan
1969 911E (historic racer)
911ST replica (tarmac rally)
Old 11-30-2005, 01:58 PM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Jul 2002
Location: Sydney, Australia
Posts: 2,443
next question - are weber 40's big enough for a fairly stock 3.2 with an early exhaust setup?
__________________
Cheers, Ryan
1969 911E (historic racer)
911ST replica (tarmac rally)
Old 12-01-2005, 02:10 PM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
40mm Webers are a bit small for a 3.2, even in a mild state of tune,...

46mm PMO's (LOTS of differences between those and Weber's) would be a better choice in all respects.

Please take note that I did NOT recommend 46mm Weber's.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-01-2005, 09:58 PM
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jul 2002
Location: Sydney, Australia
Posts: 2,443
thanks again steve
__________________
Cheers, Ryan
1969 911E (historic racer)
911ST replica (tarmac rally)
Old 12-01-2005, 10:12 PM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Registered User
 
Join Date: Apr 2004
Location: Los Angeles California
Posts: 667
Not drop-in, but what I did for my PMO'ed SC was to send the distributor in, have it rebuilt, recurved, and converted to full mechanical advance (what you'll need).

Cost was $300.

You'll need a SC distributor to start with.

The result worked excellent.

PM me if you need to know where to get it done.

TonyG
__________________
LSx 951 with 997 Cup Suspension - vision944.tonygarcia.org
3.6L 911SC - www.tonygarcia.org/911SC
Old 12-05-2005, 05:50 PM
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Tony:

Remember now that your SC's distributor has a magnetic trigger in it so thats an easy thing to do,.........

Ryan's Carrera distributor has no trigger inside it so he must either install one (not feasible for many reasons), install a compatible one with a trigger as I suggested above, or use a crank triggered system (not recommended).

Hope this clarifies things a bit,....
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-05-2005, 08:39 PM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Apr 2004
Location: Los Angeles California
Posts: 667
Steve

If he's going PMO's and dumping the DME/Fuel Injection, then the simple solution is to get a SC CDI box (which sell for $100), a SC wiring harness (cheap), and a SC distributor which then can be recurved/setup properly.

I just sold a good CDI box for $100, and a fully rebuilt/recurved/converted to mechanical advance distributor for $275.


I'm new to 911 stuff for sure. But what I did with my SC worked real well, silky smooth, made 200HP to the wheels (34mm ports, 20/21 cams, PMO 40mm carbs, SSI exhaust, properly setup distributor).

What am I missing here? (seriously.. not taking jabs at you!)


TonyG
__________________
LSx 951 with 997 Cup Suspension - vision944.tonygarcia.org
3.6L 911SC - www.tonygarcia.org/911SC
Old 12-05-2005, 09:07 PM
  Pelican Parts Technical Article Directory    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Tony:

SC distributors rotate CCW,......all other distributors rotate CW. If Ryan wants to use an SC dizzy, he must change the crank gear.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-05-2005, 10:13 PM
  Pelican Parts Technical Article Directory    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Apr 2004
Location: Los Angeles California
Posts: 667
Steve

Ahhhhh Good Point!

I wonder if a SC distributor could be modified to retard instead of advance using the same curve. If so, the reversed rotation would be a non-issue.

Like I said... I'm not up on the 911 details yet.

I'll ask the guy that modifed my distributor. Probably a dead-end though.

TonyG
__________________
LSx 951 with 997 Cup Suspension - vision944.tonygarcia.org
3.6L 911SC - www.tonygarcia.org/911SC
Old 12-05-2005, 10:33 PM
  Pelican Parts Technical Article Directory    Reply With Quote #11 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Quote:
Originally posted by TonyG
Steve

Ahhhhh Good Point!

I wonder if a SC distributor could be modified to retard instead of advance using the same curve. If so, the reversed rotation would be a non-issue.

Like I said... I'm not up on the 911 details yet.

I'll ask the guy that modifed my distributor. Probably a dead-end though.

TonyG
LOL,...Nossir, it won't do that. I have a distributor machine and have been doing such things since the mid-sixties,...
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-05-2005, 11:15 PM
  Pelican Parts Technical Article Directory    Reply With Quote #12 (permalink)
Registered User
 
Join Date: Apr 2004
Location: Los Angeles California
Posts: 667
Steve

I don't own a distributor dyno, but I've spent countless hours using them throughout the last 20+ years.

Owning a piece of machinery doesn't make you an authority on the subject as your post would suggest.

The point was that the mechanics of the SC distributor, which I openly admit I'm not familar with, might be able to be converted to move the in the opposite direction making a SC distributor a economical solution...nothing more or nothing less.

It's really a small potatoes deal...

He could simply install the Electromotive XDi ignition system. No distributor. Fired either of a pully trigger wheel (like I just did) or off a proper flywheel. $1200 retail list price (which I could get him for substantially less though our shop) and it blows any distributor out of the water ...

TonyG
__________________
LSx 951 with 997 Cup Suspension - vision944.tonygarcia.org
3.6L 911SC - www.tonygarcia.org/911SC

Last edited by TonyG; 12-06-2005 at 12:14 AM..
Old 12-06-2005, 12:08 AM
  Pelican Parts Technical Article Directory    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Quote:
Originally posted by TonyG
Steve

I don't own a distributor dyno, but I've spent countless hours using them throughout the last 20+ years.

Owning a piece of machinery doesn't make you an authority on the subject as your post would suggest.

The point was that the mechanics of the SC distributor, which I openly admit I'm not familar with, might be able to be converted to move the in the opposite direction making a SC distributor a economical solution...nothing more or nothing less.

It's really a small potatoes deal...

He could simply install the Electromotive XDi ignition system. No distributor. Fired either of a pully trigger wheel (like I just did) or off a proper flywheel. $1200 retail list price (which I could get him for substantially less though our shop) and it blows any distributor out of the water ...

TonyG
Hi Tony:

Mentioning that I have a piece of equipment wasn't my point and I apologize for the miscommunication, Sir....

I was only trying to point out that the SC distributor couldn't be converted to CW operation and how I arrived at that conclusion. I was also trying to convey that I was not a rookie at this,....

I'd also mention that there are some drawbacks to some of the current crank-fired ignitions and some are not as good as they might appear to be. In most cases, you get what you pay for.

Best Regards,
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com

Last edited by Steve@Rennsport; 12-06-2005 at 03:09 PM..
Old 12-06-2005, 08:46 AM
  Pelican Parts Technical Article Directory    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Apr 2004
Location: Seattle, WA
Posts: 177
Will a 2.7S distributor work?

Thanks

Eddie
Old 12-06-2005, 04:26 PM
  Pelican Parts Technical Article Directory    Reply With Quote #15 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Quote:
Originally posted by eddie914
Will a 2.7S distributor work?

Thanks

Eddie
Hi Eddie:

The 2.7 unit is a point-type distributor (as you know) and could be used in Ryan's application as long as he used a compatible ignition system such as the early Bosch 3-pin CD or an MSD setup.

One could also use the 2.7 dizzy with a Pertronix (to eliminate the points) and trigger the early Bosch 3-pin CDI or an MSD system.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-06-2005, 05:03 PM
  Pelican Parts Technical Article Directory    Reply With Quote #16 (permalink)
Registered User
 
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,838
Send a message via Yahoo to Lukesportsman
Actually Tony, that was my question to you days ago about the 3.0. I wanted to make sure you had kept the CCW rotation. I have a standard rotation dizzy and was just clarifying this with you before looking for other options. Just SC's and some Turbos have this quirky firing order and rotation.
__________________
Luke S.
72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8
Old 12-09-2005, 08:49 AM
  Pelican Parts Technical Article Directory    Reply With Quote #17 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,859
Hi Luke;

The firing order is identical on all air-cooled 911's, '65-'98.

Only the distributor rotation changed in some model years.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 12-09-2005, 08:59 AM
  Pelican Parts Technical Article Directory    Reply With Quote #18 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 5,918
Garage
Quote:
Originally posted by Steve@Rennsport
Hi Eddie:

The 2.7 unit is a point-type distributor (as you know) and could be used in Ryan's application as long as he used a compatible ignition system such as the early Bosch 3-pin CD or an MSD setup.

One could also use the 2.7 dizzy with a Pertronix (to eliminate the points) and trigger the early Bosch 3-pin CDI or an MSD system.
Actually the 2.7 distributor will fit in a 3.2 engine but not properly.
I have been following this thread for awhile now and thought the correct answer was given and then things went goofy.

Let's recap.
The 3.2 distr. turns clock wise.
Sc dist. turns counter clock wise.
There is no practical way to convert the SC dist.
The 2.7 dist. turns clock wise but has the wrong size gear. You can change the gear and it will work properly but the curve is strange and it uses points (float) and small dist. cap and rotor (arc inside causing cross fires at higher rpm).

The best option as stated by Steve at the beginning is:

Look for a '76 Turbo distributor.

Those are breakerless units that will slip right in. I'd suggest that the advance curve be redone since they are optimized for a Turbo motor.

All be it that you must change the drive gear to match the 3.2 crank gear.

We have a 3.0 dist. in stock that we could recurve.
Call for price and turn around.
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net

Last edited by Henry Schmidt; 12-11-2005 at 08:09 AM..
Old 12-09-2005, 02:10 PM
  Pelican Parts Technical Article Directory    Reply With Quote #19 (permalink)
Registered User
 
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,838
Send a message via Yahoo to Lukesportsman
Yes, duh.... firing order mis stated.

I was just thinking about the wiring order in the cap, but obviously it only appears different visually since it rotates backward. Brain fade. I certainly didn't mean to blur the real data.
__________________
Luke S.
72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8
Old 12-10-2005, 09:06 AM
  Pelican Parts Technical Article Directory    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 12:37 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2017 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.