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 > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Feb 2001
Location: Buzzards Bay, Ma, USA
Posts: 619
Post 82/924 Performance Upgrades

After months of mostly pleasant work and more money than I ever imagined the 924 is running pretty well and being driven daily. Sure learned a lot.

Anyway, as the disease progresses you find yourself talking about performance upgrades. We are thinking of a few simple changes to get a little more power. Specifically, better ignition, exhaust headers and Obin's legendary throttle body replacement (already have the part-$10.00). I have a spare motor that has only 76,000 miles and had a valve job just before the previous owner gave up on the project. My thinking is to go thru this motor, do whatever else necessary, and drop it into the car this winter along with the mods listed above.

Any advice you guys could provide would be appreciated. I'm a reasonably good mechanic but my experience is limited to repairing things, not modifying for performance. Are the Bursch headers any good? I recall a post from a ways back that mentioned that they were hard to fit up. Who makes a good ignition upgrade? Do they have a 12 step program for people like us?

Thanks,

Jon Aborn

Old 10-11-2001, 07:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Mar 2001
Posts: 28
Post

My God, you poor man. I have worshiping my little 924 for 5 1/2 years now and know just how you feel. The little engines can use some power, and if you read the looking for 924/944 post, the Pocket Rocket upgrades are listed there. I am curious what the "throttle body upgrade is?"
Old 10-11-2001, 09:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
macreel's Avatar
 
Join Date: Jan 2001
Location: (the other) WA state
Posts: 220
Talking

Tom Swift...throttle body upgrade = the
easiest is replacement by an Audi5000S unit. I'm looking for one now(for '79 924).

Bursch headers get a lot of 'good press'.

G' luck.
Old 10-16-2001, 01:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
J1NX3D's Avatar
 
Join Date: Feb 2001
Location: Christchurch, New Zealand
Posts: 2,049
Garage
like this one??

http://cgi.ebay.com/ebaymotors/aw-cgi/eBayISAPI.dll?ViewItem&item=596738274

If so I'm very interested!!
Old 10-16-2001, 04:26 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Banned
 
Join Date: Jul 2000
Location: greenwood,sc usa
Posts: 2,431
Post

Jon,

There is a lot of wear in the cam & lifters of these old motors. When you see it during a valve adjustment, go ahead & get a bigger cam. Then injection, ignition, & exhaust mods will pay off.

You can try the old USA tricks back in the distributor days, light advance springs, fixing vacuum advance plate for no advance, and add a modern MSD box. One thing about the MSD box, if you're already burning all of the gas what does adding one help? If you modify the injection it might help.

Injection? Increase fuel pressure by playing with the shims in the mixture thing with the flapper, keep forgetting what to call it but all of the injection lines come from it.

drew1
Old 10-20-2001, 06:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Composite Shop Owner, DJ
 
MixMasterK's Avatar
 
Join Date: Oct 2001
Location: Saint Helens, OR, USA
Posts: 397
Send a message via MSN to MixMasterK Send a message via Yahoo to MixMasterK
Post

I have a full Bursch exhaust system installed on my '79 924. It works great! One or two of the mounting holes had to be enlarged a bit, but other than that there were no problems assembling the system. Just make sure to weld everything together instead of using the inferior clamps.

I have also installed the Jacobs Omni Magnum Ignition Package. This system is really nice as well. I pulled one of the spark plugs a bit ago (number 1 cylinder) and inspected it. It looked like it had only been run for a couple miles, no deposits of any kind, very clean. I've put over 2000 miles on this rebuilt head as well as using the ignition system.
Old 10-20-2001, 12:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
JB2 JB2 is offline
Registered User
 
Join Date: Oct 2001
Location: el cajon,ca.USA
Posts: 30
Post

i got my bursch headers from performance products for 275.00, and they came with the test pipe to delete the cat.you can feel the differance,and the sound is nice.they don't advertise them you have to ask for them.i did not have any fit problems.also i use the msd6a, its very easy to hook up. good luck..

------------------
MSD 6A,JACOBS WIRES,BOSCH 15V COIL,+4'S,THROTTLE RESPONCE CAM,CUSTOM COLD AIR INTAKE,K&N FILTER,BURSCHE HEADERS,2 1/4 PIPING,HIGH FLOW CAT,FLOWMASTER 3 CHAMBER, TURBO FRONT END,MOMO STEERING WHEEL,STRUT BRACE,KYB'S,MOROSO BATT. BOX AND CUT OFF SWITCH,KENWOOD CD,AUTOMETER TACH AND OIL PRESS GAUGE,SUMMIT DATA RECALL SYSTEM,FALKEN TIRES,EPSILON TWO PIECE RIMS.
Old 10-20-2001, 01:12 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Feb 2001
Location: Buzzards Bay, Ma, USA
Posts: 619
Post

Quote:
Originally posted by Tom Swift:
My God, you poor man. I have worshiping my little 924 for 5 1/2 years now and know just how you feel. The little engines can use some power, and if you read the looking for 924/944 post, the Pocket Rocket upgrades are listed there. I am curious what the "throttle body upgrade is?"
Tom, the throttle body came from an old 5 cylinder Audi. The local junkyard had a whole row of them and we just removed the cleanest looking one. I havn't installed yet but it looks like a very easy fit-up. It cost me $10.00.
Old 10-21-2001, 06:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Mar 2001
Posts: 28
Post

And this (5000s) can bolt in to my 80 924FI easily? Just what is the real benefit, HP wise, for this mod? Thanx!
The Pocket Rocket 80 924
Old 10-27-2001, 11:14 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Feb 2001
Location: Buzzards Bay, Ma, USA
Posts: 619
Post

Tom, the throttle body will bolt right up to your manifold and the rubber boot will fit over the other end, no trouble. What will require a little work is getting the microswitches and the throttle cable to work. I have not done this swap yet but it looks like the shafts for the butterflies can be interchanged and all the original linkage and switch set-up can go onto the new throttle body. Obin did a post about this a while back. You may be able to find it.
I am in the process of replacing the head on the 924 with my spare that was rebuilt before I got it. I am also adding Bursch headers along with the throttle body. I will let you know how much performance all this adds. I'm guessing that there will not be a significant improvement, I'll be happy with anything noticeable......
Jon

Old 10-27-2001, 04:47 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 08:19 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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.