 Troublesome Pertronix Install, something to watch out for |
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| Rand |
 Jun 6 2011, 01:27 PM
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#21
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Cross Member  Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None  |
QUOTE(windforfun @ Jan 5 2011, 03:17 PM)  QUOTE(dr914@autoatlanta.com @ Jan 4 2011, 09:24 AM) WE thought that the pertronix and compufire units, when introduced for the type four distributor, were the be all end all, and in the beginning it was: Units that eliminated the messy points condenser, kept the dwell and timing steady, provided better fuel economy, easier cold starts, and smoother idle, AND would hide under the distributor cap. What we have learned over the years is that it has a high failure rate due to the excessive heat of the air cooled engine, actually reduces the total horsepower of the engine, AND has clearance problems! I would NEVER drive my 914 on a long trip without carrying a set of points and a condenser with me. Too bad we thought that we had a solution. I have one in my Dad's 64 Riviera and it has never failed, but of course that is a water cooled engine with a BIG distributor! Do you still sell these? Nah, he would never sell a product he didn't believe in. That's not his style... http://www.autoatlanta.com/detail.php?Part...al_number=28882 Kidding aside, I like the Pertronix. Sure, I would always carry points in the onboard parts/toolkit just in case. But I never had trouble with them and appreciated the benefits. To each his own. |
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| Als914 |
Jun 6 2011, 02:00 PM
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#22
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Lighting my way Group: Members Posts: 330 Joined: 1-January 06 From: Hemet,Ca. Member No.: 5,346 Region Association: Southern California |
QUOTE(McMark @ Dec 31 2010, 09:23 PM) I rebuilt a distributor today and installed a Pertronix unit, and ran into a problem that I never had/noticed before. This was a 039xxx205A distributor and the problem was that the little 'finger' in the bottom right was running into the Pertronix mounting plate. This interference was completely eliminating any vacuum advance. 5 minutes with a file and it was all fixed. If you've got a Pertronix, this would be something to look for and should be visible simply by removing the cap and rotor and jumping in the engine bay with a flashlight. Always learn something new. (IMG:style_emoticons/default/shades.gif) Good job on notching the plate. When I installed mine some fifteen years ago the kit included the notched and non-notched plates. |
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| Crash207 |
Jun 8 2011, 04:52 PM
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#23
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Newbie Group: Members Posts: 17 Joined: 23-May 11 From: United States Member No.: 13,108 Region Association: Rocky Mountains |
I just bought and installed a "Hot Spark" unit in mine. similar to the pertronix. had exactly the same issue with the baseplate but 5 mins with the file and its fine. BTW the hot spark mod is working like a champ so far. best 10 mins and $50 i have spent on this project so far.
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| ThinAir |
Jun 8 2011, 11:08 PM
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#24
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Best friends Group: Members Posts: 2,542 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region 
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Never heard of "Hot Spark" before - do you have a link? Can you leave your ignition on like a Pertronix2?
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| Derek Seymour |
Jun 8 2011, 11:32 PM
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#25
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Member Group: Members Posts: 394 Joined: 10-March 09 From: Yucaipa Member No.: 10,151 Region Association: Southern California |
Personally IMHO if your engine is "close" to stock either run stock or this. http://www.hot-spark.com/Hot-Spark-SVDA034-3BOS4U1.htm
You need both vacuum and centrifugal advance for a Porsche Type IV or 1750 SC/912 engine. |
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| McMark |
Jun 9 2011, 12:02 AM
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#26
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Unless you use stock D-Jet. (IMG:style_emoticons/default/wink.gif)
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| SLITS |
Jun 9 2011, 07:17 AM
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#27
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
Someday, everyone will realize that the vacuum advance is for emissions and gas mileage only. Think about it ... it will only function when there is vacuum available ... idle, part throttle cruise or de-acceleration. When accelerating, the advance is mechanical only.
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| reharvey |
Jun 9 2011, 07:46 AM
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#28
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Senior Member Group: Members Posts: 573 Joined: 16-July 08 From: N. E. Ohio Member No.: 9,308 Region Association: North East States |
I've installed Pertonix on four of my 914s and there was always some issue getting them to fit and work properly. Had a problem with all of the issues mentioned here. Once they're set up they seem to work very well. Rayjay
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| DRPHIL914 |
Jun 9 2011, 11:31 AM
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#29
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Dr. Phil Group: Members Posts: 5,767 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States
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QUOTE(ThinAir @ Jun 9 2011, 01:08 AM) Never heard of "Hot Spark" before - do you have a link? Can you leave your ignition on like a Pertronix2? recently put the hot spark unit with coil in after car had quit the week before(points went, bad coil too) so i thought i would give it a try- cranked right up- ran great for 3 days, then car started missing - its electrical, but have not been able to chase it down yet- not ready to say the unit went bad already, i will know tonight when i trouble shoot it and try a spare- i'll let you know(could be injector points)- but for the 3 days it was the best it has run or idled since ive had the car in 2 years. pw |
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| marksteinhilber |
Aug 1 2018, 11:26 PM
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#30
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Member Group: Members Posts: 229 Joined: 18-October 12 From: Foothill Ranch, CA 92610 Member No.: 15,057 Region Association: Southern California |
QUOTE(Philip W. @ Jun 9 2011, 10:31 AM) QUOTE(ThinAir @ Jun 9 2011, 01:08 AM) Never heard of "Hot Spark" before - do you have a link? Can you leave your ignition on like a Pertronix2? recently put the hot spark unit with coil in after car had quit the week before(points went, bad coil too) so i thought i would give it a try- cranked right up- ran great for 3 days, then car started missing - its electrical, but have not been able to chase it down yet- not ready to say the unit went bad already, i will know tonight when i trouble shoot it and try a spare- i'll let you know(could be injector points)- but for the 3 days it was the best it has run or idled since ive had the car in 2 years. pw Do you have djet? You may need to clean and lube your trigger points in the bottom of the distributor. |
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| raynekat |
Aug 1 2018, 11:37 PM
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#31
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Advanced Member Group: Members Posts: 2,159 Joined: 30-December 14 From: Coeur d'Alene, Idaho Member No.: 18,263 Region Association: Pacific Northwest
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Had Pertronix in my 73 911 and never had a problem with it for over 15 years. Beats the heck out of points and a condenser. To me, that is just Neanderthal tech.
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| Tbrown4x4 |
Aug 2 2018, 02:39 AM
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#32
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Senior Member Group: Members Posts: 704 Joined: 13-May 14 From: Port Orchard, WA Member No.: 17,338 Region Association: None
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QUOTE(marksteinhilber @ Aug 1 2018, 10:26 PM) QUOTE(Philip W. @ Jun 9 2011, 10:31 AM) QUOTE(ThinAir @ Jun 9 2011, 01:08 AM) Never heard of "Hot Spark" before - do you have a link? Can you leave your ignition on like a Pertronix2? recently put the hot spark unit with coil in after car had quit the week before(points went, bad coil too) so i thought i would give it a try- cranked right up- ran great for 3 days, then car started missing - its electrical, but have not been able to chase it down yet- not ready to say the unit went bad already, i will know tonight when i trouble shoot it and try a spare- i'll let you know(could be injector points)- but for the 3 days it was the best it has run or idled since ive had the car in 2 years. pw Do you have djet? You may need to clean and lube your trigger points in the bottom of the distributor. Well if he hasn't fixed it in the last 7 years, I doubt he's going to bother now! |
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| 914werke |
Aug 2 2018, 08:04 AM
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#33
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"I got blisters on me fingers" Group: Members Posts: 10,085 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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Nah. sure it still on jack stands
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| DRPHIL914 |
Aug 2 2018, 09:29 AM
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#34
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Dr. Phil Group: Members Posts: 5,767 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States
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blast from the past! - let me see if I can recall the issue- it was not the hotspark module, in fact I am still running that same module with out an issue at all. - I had and issue with the FI grounds shorting out on one bank , and I had a MPS take a crap as well. but if I remember correctly the issue back in 2011 was the fi grounds and some other short so I ended up buying a new harness from Jeff Bowlsby, got a different MPS which later both got rebuilt when the kits from Tangerine racing came out. at some point a few years ago I was getting a bucking issue that turned out to be the TPS circuit board, which was replaced by the new ones from davesprinkle.
Yes it is 2.0 D-jet on mine anyway, - oh and I have the new 123ignition distributor that will be going in soon. |
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| porschetub |
Aug 2 2018, 11:51 PM
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#35
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Advanced Member Group: Members Posts: 4,701 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Have had fitment issues,the Ignitor II kit I bought for my Bosch 6 dizzy wasn't ideal the base mounting plate didn't line up properly and needed correction.
Fair from perfect but not a huge deal. |
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| porschetub |
Aug 3 2018, 12:19 AM
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#36
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Advanced Member Group: Members Posts: 4,701 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(Rand @ Jun 7 2011, 07:27 AM) QUOTE(windforfun @ Jan 5 2011, 03:17 PM) QUOTE(dr914@autoatlanta.com @ Jan 4 2011, 09:24 AM) WE thought that the pertronix and compufire units, when introduced for the type four distributor, were the be all end all, and in the beginning it was: Units that eliminated the messy points condenser, kept the dwell and timing steady, provided better fuel economy, easier cold starts, and smoother idle, AND would hide under the distributor cap. What we have learned over the years is that it has a high failure rate due to the excessive heat of the air cooled engine, actually reduces the total horsepower of the engine, AND has clearance problems! I would NEVER drive my 914 on a long trip without carrying a set of points and a condenser with me. Too bad we thought that we had a solution. I have one in my Dad's 64 Riviera and it has never failed, but of course that is a water cooled engine with a BIG distributor! Do you still sell these? Nah, he would never sell a product he didn't believe in. That's not his style... http://www.autoatlanta.com/detail.php?Part...al_number=28882 Kidding aside, I like the Pertronix. Sure, I would always carry points in the onboard parts/toolkit just in case. But I never had trouble with them and appreciated the benefits. To each his own. (IMG:style_emoticons/default/agree.gif) no issues what so ever with many units fitted ,having spare parts for these systems is like carrying a second spare tyre because you might get 2 flats in a drive. Noticed on here some don't run the right coils with these units also,maybe reason for failures (IMG:style_emoticons/default/confused24.gif) . |
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