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Search: Posts Made By: jcorenman
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Forum: 928 Forum
06-21-2019, 12:11 PM
Replies: 29
Views: 1,590
Posted By jcorenman

Without a chip (or a PEM) plugged in properly the...

Without a chip (or a PEM) plugged in properly the LH was dead, its microprocessor was not micro-processing. This is the dead-LH syndrome where it just fires the injectors whenever the key is on. The...
Forum: 928 Forum
06-09-2019, 09:10 PM
Replies: 75
Views: 6,429
Posted By jcorenman

And the avatars... :cheers: I tried...

And the avatars... :cheers:

I tried searching the archives on Facebook, once.
Forum: 928 Forum
06-07-2019, 01:55 AM
Replies: 29
Views: 1,590
Posted By jcorenman

Blake, this brings a whole new dimension to the...

Blake, this brings a whole new dimension to the usual advice of "check whatever you last changed"...:cool:

Was it tested or refurbished? Can you get your hands on a stock LH for a test?

Sounds...
Forum: 928 Forum
05-23-2019, 08:55 PM
Replies: 39
Views: 4,282
Posted By jcorenman

Yes.

Yes.
Forum: 928 Forum
05-23-2019, 02:10 AM
Replies: 110
Views: 7,634
Posted By jcorenman

Correct, timing ring for the crank position...

Correct, timing ring for the crank position sensor (CPS). Fuel timing is not important but ignition timing is critical. And yes, if you add ten degrees advance to all of the maps (idle, cruise, etc)...
Forum: 928 Forum
05-22-2019, 11:20 AM
Replies: 110
Views: 7,634
Posted By jcorenman

Yes, timing ring has slipped. This is an auto,...

Yes, timing ring has slipped. This is an auto, right? If so the timing ring is a separate piece, interference-fit as noted and can slip. (For stock single-disc clutches the timing teeth are integral...
Forum: 928 Forum
05-20-2019, 06:28 PM
Replies: 18
Views: 730
Posted By jcorenman

If I missed a query, please accept my apologies....

If I missed a query, please accept my apologies. Sharktuner Mk-2 works on 87+ but needs PEMs installed, as noted. The PEMs are what provide the communication with the ST2 box and computer, and allow...
Forum: 928 Forum
04-10-2019, 10:50 AM
Replies: 57
Views: 4,823
Posted By jcorenman

Interesting discussion. Thank you Ricardo, for...

Interesting discussion. Thank you Ricardo, for finding that and posting it.

Here is the Bosch press release, in English:...
Forum: 928 Forum
02-08-2019, 06:47 PM
Replies: 107
Views: 7,388
Posted By jcorenman

A 928, our '88s4... ...

A 928, our '88s4...

https://cimg5.ibsrv.net/gimg/rennlist.com-vbulletin/1279x853/88s4_6c8307f6f4096dc204ecede852ae5d224ea30601.jpg
Forum: 928 Forum
01-16-2019, 11:23 AM
Replies: 13
Views: 520
Posted By jcorenman

Yes, and zero....

Yes, and zero. https://rennlist.com/forums/928-forum/960607-so-i-need-a-new-windshield.html#post13714963

Porsche only has windshields with antennas. So whatever part# you order (and there has been...
Forum: 928 Forum
12-28-2018, 11:57 PM
Replies: 19
Views: 673
Posted By jcorenman

Jeff, what are the ET offsets for the front...

Jeff, what are the ET offsets for the front wheels, the 18" summers that were OK and the winter wheels that you just fitted?
Forum: 928 Forum
12-03-2018, 12:02 AM
Replies: 41
Views: 1,638
Posted By jcorenman

This one, buy the set:...

This one, buy the set:...
Forum: 928 Forum
11-27-2018, 01:26 AM
Replies: 161
Views: 17,989
Posted By jcorenman

No need, assuming the injectors are large enough....

No need, assuming the injectors are large enough.

Remember that the stock intake has a cam arrangement between the throttle plate and the cable, so that initial pedal travel has a small effect on...
Forum: 928 Forum
11-07-2018, 07:26 PM
Replies: 50
Views: 2,037
Posted By jcorenman

No, the green thing is the pressure switch and...

No, the green thing is the pressure switch and the threaded plug hides the check valve. :)
Everything else is the pump: The two pistons and balls go into holes in the hub, which goes onto the...
Forum: 928 Forum
11-05-2018, 10:54 PM
Replies: 64
Views: 5,536
Posted By jcorenman

Ignition map looks reasonable, a couple degrees...

Ignition map looks reasonable, a couple degrees more advance in the mid-range (30-70 load, 2000-4000 RPMs) compared to where I wound up with our '88s4. And your compression (at cranking RPM) is lower...
Forum: 928 Forum
11-03-2018, 01:33 AM
Replies: 50
Views: 2,037
Posted By jcorenman

Try this thread:...

Try this thread: https://rennlist.com/forums/928-forum/796987-help-on-psd-pump.html

How much vacuum does the brake bleeder pull?
Forum: 928 Forum
11-02-2018, 04:14 PM
Replies: 50
Views: 2,037
Posted By jcorenman

If the pump is dry then getting it primed can be...

If the pump is dry then getting it primed can be a challenge. Start with the bleeder at the solenoid valve body, open it (one turn or so) and stick a length of plastic tubing on it to a catch-can....
Forum: 928 Forum
11-01-2018, 01:46 AM
Replies: 8
Views: 735
Posted By jcorenman

19. Nice car! :cheers:

19. Nice car! :cheers:
Forum: 928 Forum
10-31-2018, 10:33 PM
Replies: 15
Views: 1,036
Posted By jcorenman

ID of the connector hose is the universal...

ID of the connector hose is the universal standard of 12.7mm :)

Try this thread: https://rennlist.com/forums/928-forum/700943-in-tank-pump-repair-with-pics.html#post9863710

:cheers:
Forum: 928 Forum
10-31-2018, 10:51 AM
Replies: 96
Views: 2,692
Posted By jcorenman

The important spec is engine stopped, pump...

The important spec is engine stopped, pump jumpered: 3.8 +/- 0.2 bar (55 psi +/- 3). The reason for engine-stopped is no engine intake-vacuum, which will change (reduce) fuel pressure to maintain a...
Forum: 928 Forum
10-31-2018, 02:19 AM
Replies: 96
Views: 2,692
Posted By jcorenman

Yes, same spigot but there are certainly...

Yes, same spigot but there are certainly differences. Paul (merchauser) here, also Bill (placer), hard to argue with audible knocks in a DD, we've seen it also when tuning our GT. Fuel is the same...
Forum: 928 Forum
10-30-2018, 07:12 PM
Replies: 96
Views: 2,692
Posted By jcorenman

Yep, stock GT EZK chip, Interesting...

Yep, stock GT EZK chip, Interesting...
Forum: 928 Forum
10-30-2018, 05:06 PM
Replies: 96
Views: 2,692
Posted By jcorenman

Paul, in post# 28 I said "few if any", not zero....

Paul, in post# 28 I said "few if any", not zero. I think Dave (in a previous thread) and others have posted that S4/GTs generally show zero knock-retards, but it is highly variable.

There is one...
Forum: 928 Forum
10-30-2018, 11:50 AM
Replies: 96
Views: 2,692
Posted By jcorenman

Part-throttle and you are getting knocks at 4K...

Part-throttle and you are getting knocks at 4K rpm? Are these stock brains or did someone slip in a set of Autothority chips?
Forum: 928 Forum
10-30-2018, 11:44 AM
Replies: 96
Views: 2,692
Posted By jcorenman

^^^ This. Having more variables than data really...

^^^ This. Having more variables than data really wrecks the logical process.

Paul, if the throttle switch shows any flakiness, then replace it. That removes one variable. The effect of a...
Showing results 1 to 25 of 493
 


 
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