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Search: Posts Made By: Bob Ashlock
Forum: Porsche 911 Technical Forum 09-13-2018, 07:41 PM
Replies: 52
Views: 16,252
Posted By Bob Ashlock
Thanks JP! Glad to see you got everything...

Thanks JP! Glad to see you got everything working properly. I have over 1000 of these units now in service.
Forum: Porsche 911 Technical Forum 09-10-2018, 01:32 PM
Replies: 52
Views: 16,252
Posted By Bob Ashlock
As I understand it, the MSD adapter is basically...

As I understand it, the MSD adapter is basically is a toggled inductor that puts out a pretty high voltage spike with some undamped resonating pulses. Some tachs respond to those extra pulses and...
Forum: Porsche 911 Technical Forum 09-09-2018, 02:09 PM
Replies: 52
Views: 16,252
Posted By Bob Ashlock
Common problem with the MSD adapter driving these...

Common problem with the MSD adapter driving these old VDO tachs. You should use the discrete tachometer output from the MSD and send that to my TACH-ADAPT unit. It will then convert that low...
Forum: Porsche 911 Technical Forum 09-02-2018, 01:44 PM
Replies: 5
Views: 210
Posted By Bob Ashlock
Verify your points are properly gapped.

Verify your points are properly gapped.
Forum: Porsche 911 Technical Forum 08-26-2018, 09:54 AM
Replies: 8
Views: 345
Posted By Bob Ashlock
Hi friends, service by AshlockTECH (direct and...

Hi friends, service by AshlockTECH (direct and via Pelican) will resume in mid Sept when I return from vacation. Us mad-scientist guys need a break once in a while... ;). Other experts mentioned...
Forum: Porsche 911 Used Parts For Sale & Wanted 07-02-2018, 10:53 AM
Replies: 0
Views: 77
Posted By Bob Ashlock
6-pin CDI cores wanted

Looking for 6-pin Bosch CDI cores. Do not need to be functional, but must be complete. What have you got?
Forum: Porsche 912 Technical Forum 06-17-2018, 10:28 AM
Replies: 4
Views: 366
Posted By Bob Ashlock
Fer, make sure to check out the 912 Registry BBS...

Fer, make sure to check out the 912 Registry BBS ... beaucoup info there on the 912, lots of friendly people ready to help!
Forum: Porsche 911 Technical Forum 05-09-2018, 10:38 AM
Replies: 27
Views: 595
Posted By Bob Ashlock
Definitely manipulate the green distributor wire....

Definitely manipulate the green distributor wire. And, just because you can hear the unit sqealing does not mean it can fire the coil. If you need the unit serviced, check pelican part number...
Forum: Porsche 911 Technical Forum 05-03-2018, 07:34 PM
Replies: 20
Views: 696
Posted By Bob Ashlock
The question about CDI Box squeal ... well, some...

The question about CDI Box squeal ... well, some are louder than others (has to do with how tight the transformer windings and cores are seated), but definitely if there is zero detectable whine,...
Forum: Porsche 911 Technical Forum 05-03-2018, 09:04 AM
Replies: 20
Views: 696
Posted By Bob Ashlock
Do check for spark.. the symptom you describe is...

Do check for spark.. the symptom you describe is typical of the CDI box discharge capacitor dying it's last breath .. hard starting because of weak spark, then the spark energy decreases further as...
Forum: Porsche 911 Technical Forum 03-18-2018, 09:09 AM
Replies: 518
Views: 74,207
Posted By Bob Ashlock
Where to begin...? Back in the mid 70's I sold...

Where to begin...? Back in the mid 70's I sold my '66 911, still in good condition for $3200. Hey, I didn't lose much... I only paid $3500 for it in '71 when it had 36000 miles on it.
Forum: Porsche 911 Technical Forum 02-06-2018, 12:48 PM
Replies: 4
Views: 240
Posted By Bob Ashlock
Engine only or engine and trans? (912's are easy...

Engine only or engine and trans? (912's are easy to pull engine only.)
Forum: Porsche 911 Technical Forum 01-25-2018, 06:49 AM
Replies: 38
Views: 1,609
Posted By Bob Ashlock
Tell your goofball insurance company to take a...

Tell your goofball insurance company to take a hike! I have my daily-driver 912 insured by Infinity through Heacock Classics with unlimited mileage with insured value at 40K. The annual premium is...
Forum: Porsche 911 Technical Forum 01-09-2018, 05:07 PM
Replies: 4
Views: 223
Posted By Bob Ashlock
I once had a regulator and gauge in the engine...

I once had a regulator and gauge in the engine compartment up so I could keep an eye on the pressure for my Webers. I found it changed quite a bit with increasing temperature. First thought it was...
Forum: Porsche Marketplace Discussion 12-18-2017, 09:08 AM
Replies: 19
Views: 1,167
Posted By Bob Ashlock
This is a common occurrence on CL nowadays. The...

This is a common occurrence on CL nowadays. The first giveaway is when you email the 'seller' and start asking simple questions about ownership, registration, smog certificate, etc. that they refuse...
Forum: Porsche 911 Used Parts For Sale & Wanted 12-16-2017, 01:56 PM
Replies: 0
Views: 177
Posted By Bob Ashlock
WTB: Bosch CDI Cores

Always on the hunt for Bosch CDI cores. No need to be functional, but must be complete. I offer $100 plus shipping.
Forum: Porsche 911 Technical Forum 12-05-2017, 07:27 AM
Replies: 7
Views: 362
Posted By Bob Ashlock
Around August of the '71 production year, Porsche...

Around August of the '71 production year, Porsche changed the tach to work directly from the points. Before that, the tach was triggered from a 'filtered' signal derived directly from the high...
Forum: Porsche 911 Technical Forum 10-18-2017, 02:02 PM
Replies: 10
Views: 364
Posted By Bob Ashlock
happens all the time... Starter solenoid plunger...

happens all the time... Starter solenoid plunger gets 'sticky' in its bore. Can't slide quite far enough to engage the contactors. Take the starter apart, clean and lube and be good to go for many...
Forum: Porsche 912 Technical Forum 10-06-2017, 12:05 PM
Replies: 7
Views: 1,461
Posted By Bob Ashlock
Been there, done that. I have an otherwise...

Been there, done that. I have an otherwise "good" motor now sitting in the garage that needs to be torn down and have the case reworked due to this problem. Winter project I guess.
Forum: Porsche 911 Technical Forum 09-28-2017, 03:54 PM
Replies: 0
Views: 219
Posted By Bob Ashlock
Tachometer Tester

Here's a little product design I did a few years back for my own test-bench and recently moved forward to 'commercialize' because, according to one well-known Porsche Master Mechanic, "Every Porsche...
Forum: Porsche 911 Used Parts For Sale & Wanted 09-07-2017, 07:37 PM
Replies: 11
Views: 827
Posted By Bob Ashlock
And thanks xsurfer/Gene Selger! I do strive to...

And thanks xsurfer/Gene Selger! I do strive to provide a reasonably priced, high-quality service experience to my fellow Porsche enthusiasts. :)
Forum: Porsche 911 Used Parts For Sale & Wanted 09-07-2017, 04:54 AM
Replies: 11
Views: 827
Posted By Bob Ashlock
Sorry to not respond sooner ... vacation called! ...

Sorry to not respond sooner ... vacation called! PM's sent.
Forum: Porsche 911 Technical Forum 08-16-2017, 07:55 PM
Replies: 13
Views: 574
Posted By Bob Ashlock
The Bosch 6-pin CDI TD 8V (Tach Drive) signal...

The Bosch 6-pin CDI TD 8V (Tach Drive) signal needs a pull-up resistor. This is normally provided within the SC tach. The earlier 74 tach does not provide this, and also expects to see a 12V signal...
Forum: Porsche 911 Used Parts For Sale & Wanted 08-15-2017, 01:58 PM
Replies: 11
Views: 827
Posted By Bob Ashlock
Thanks for the bump Tom. Always looking...

Thanks for the bump Tom.

Always looking for Bosch CDI boxes. Dead ones are welcome, I can fix them!
Forum: Porsche 911 Used Parts For Sale & Wanted 08-14-2017, 01:13 PM
Replies: 11
Views: 827
Posted By Bob Ashlock
WTB: Calling all CDI Cores

Hi all, I'm always on the hunt for Bosch CDI Cores. They do not need to be functional but they need to be complete and not all corroded. I offer $80 - $100 depending on condition.
Showing results 1 to 25 of 298

 
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