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Forum: maintenance & nonperformance 07-08-2020, 07:49 PM
Replies: 15
Views: 310
Posted By bobxyz
A failing alternator might be able to generate...

A failing alternator might be able to generate enough electrical noise to cause false triggers from the LH2.2 distributor pickup, but it's doubtful. I'd re-check the disti pickup wiring, and the EZK...
Forum: performance & modifications 07-08-2020, 07:35 PM
Replies: 3
Views: 214
Posted By bobxyz
It will be easiest to replace all the original...

It will be easiest to replace all the original K-Jet relays, fuses and wiring with new ones. Follow this diagram as closely as you can, and ask questions if it doesn't match what you're seeing: ...
Forum: maintenance & nonperformance 07-03-2020, 10:00 PM
Replies: 16
Views: 639
Posted By bobxyz
Do you hear it prime the pumps when you first...

Do you hear it prime the pumps when you first turn it on? If you're not getting any diag box codes when the probe is in socket #2 (ECU), but you are getting codes from socket #6 (EZK), try replacing...
Forum: performance & modifications 07-03-2020, 01:32 PM
Replies: 8
Views: 429
Posted By bobxyz
A '88 245 should have an electronic speedometer...

A '88 245 should have an electronic speedometer (vs. mechanical cable driven), so the VSS Vehicle Speed Signal is available on the back of the cluster, but will need a new wire to connect it to the...
Forum: performance & modifications 07-03-2020, 01:20 PM
Replies: 8
Views: 429
Posted By bobxyz
I'd suggest converting to LH2.4. You'll need a...

I'd suggest converting to LH2.4. You'll need a NA LH2.4 240 Engine Wiring Harness, plus a LH2.4 Turbo ECU, a EZK116 Turbo ignition box, the Turbo injector resistor module with wiring, a LH2.4 MAF...
Forum: performance & modifications 06-30-2020, 12:26 AM
Replies: 56
Views: 3,926
Posted By bobxyz
Ohhhh, I like puzzles, I'll guess ROH.

Ohhhh, I like puzzles, I'll guess ROH.
Forum: maintenance & nonperformance 06-27-2020, 03:02 PM
Replies: 6
Views: 401
Posted By bobxyz
I think the issue of the OBD diags not working is...

I think the issue of the OBD diags not working is separate from the CPS/car dying.

The OBD diag box has two wires to power and ground, plus one wire to the EZK (#6) and one wire to the ECU (#2). ...
Forum: aftermarket engine management 06-25-2020, 02:29 PM
Replies: 85
Views: 11,109
Posted By bobxyz
^^^ they're part of the deluxe MS3pro kit...

^^^ they're part of the deluxe MS3pro kit (https://www.diyautotune.com/shop/mspro-efi-ems/ms3pro/ms3pro-ecu/), but they're also available individually...
Forum: aftermarket engine management 06-25-2020, 09:24 AM
Replies: 85
Views: 11,109
Posted By bobxyz
Looks fine :) I'd chase down your voltage...

Looks fine :)

I'd chase down your voltage drop before doing much else. Either your battery's dead and you're running on just the trickle charger (try the headlights), or you have a really...
Forum: aftermarket engine management 06-23-2020, 09:42 AM
Replies: 85
Views: 11,109
Posted By bobxyz
Looks like you added the resistors in series...

Looks like you added the resistors in series instead of a pullup configuration. The original crank / cam wires should go directly from CAS to MS3. In addition, connect one end of each 1K resistor...
Forum: aftermarket engine management 06-22-2020, 01:34 PM
Replies: 85
Views: 11,109
Posted By bobxyz
The config settings look mostly OK. You may need...

The config settings look mostly OK. You may need to flip the Second Trigger Active On edge if your fixed 10degree timing is way off with a timing light. For full sequential, you want COP instead of...
Forum: aftermarket engine management 06-22-2020, 12:23 PM
Replies: 85
Views: 11,109
Posted By bobxyz
You need a 1K ohm pullup resistor to Vref (+5v)...

You need a 1K ohm pullup resistor to Vref (+5v) on the crank pin, and another 1K pullup on the cam pin. These can be added either to the harness, or usually within the MS box (I'm not sure if...
Forum: performance & modifications 06-22-2020, 09:51 AM
Replies: 7
Views: 806
Posted By bobxyz
To begin with, you can use the distributor, coil,...

To begin with, you can use the distributor, coil, ignition box, and ballast resistor from the original K-Jet B21FT car. In one of the old ignition greenbooks, you can find the advance/retard curves...
Forum: performance & modifications 06-19-2020, 04:02 PM
Replies: 7
Views: 806
Posted By bobxyz
You can use a LH2.2 temperature sensor (2 pin,...

You can use a LH2.2 temperature sensor (2 pin, single sensor, not grounded to block) or one pin of a LH2.4 temperature sensor (2 pin, 2 separate sensors, using block for common ground). Measure the...
Forum: maintenance & nonperformance 06-18-2020, 12:44 AM
Replies: 42
Views: 1,586
Posted By bobxyz
Your hypothesis for the blown fuses sounds...

Your hypothesis for the blown fuses sounds reasonable. With this, your alternator charging voltage at the battery is OK, but on the low side. It sounds like you've done some voltage drop tests and...
Forum: maintenance & nonperformance 06-17-2020, 07:40 PM
Replies: 42
Views: 1,586
Posted By bobxyz
Huh??? What sort of alternator do you have? The...

Huh??? What sort of alternator do you have? The standard small 55Amp Bosch alternators have a B+ stud and a recessed D+ male spade terminal. Terminal 61 is another name for the D+ spade terminal. ...
Forum: maintenance & nonperformance 06-17-2020, 05:23 PM
Replies: 42
Views: 1,586
Posted By bobxyz
Fuse 13 supplies a bunch of stuff, including the...

Fuse 13 supplies a bunch of stuff, including the instrument cluster. If fuse 13 is bad, then the D+ connection to the alternator doesn't get voltage which means the field coil in the alternator...
Forum: performance & modifications 06-14-2020, 04:00 PM
Replies: 860
Views: 920,579
Posted By bobxyz
^^^ post 566 is the same one I have bookmarked...

^^^ post 566 is the same one I have bookmarked for latest instructions. Post 639 shows a recent, or maybe latest?, kit.

If you look at the squirter parts carefully, you'll find that there's a...
Forum: maintenance & nonperformance 06-12-2020, 08:53 PM
Replies: 5
Views: 619
Posted By bobxyz
I have no experience with these, but white855T...

I have no experience with these, but white855T suggested in this thread: http://forums.turbobricks.com/showthread.php?t=344174
to try:...
Forum: performance & modifications 06-12-2020, 08:42 PM
Replies: 860
Views: 920,579
Posted By bobxyz
Web search for: BMW Oil Spraying Nozzle...

Web search for: BMW Oil Spraying Nozzle 11111739907
Forum: performance & modifications 06-12-2020, 08:29 PM
Replies: 5
Views: 616
Posted By bobxyz
Make sure the fan position overlaps the one...

Make sure the fan position overlaps the one corner -- 740 Tic shrouds are similar, but the fan is more centered. Normal NA 240 shrouds are ~7" deep. The 240 Tic shrouds are ~3 1/4" deep. I've seen...
Forum: performance & modifications 06-12-2020, 02:20 PM
Replies: 24
Views: 1,478
Posted By bobxyz
See group buys in For Sale for some additional...

See group buys in For Sale for some additional info
Forum: maintenance & nonperformance 06-12-2020, 02:17 PM
Replies: 3
Views: 644
Posted By bobxyz
These may help: ...

These may help:
http://www.forums.turbobricks.com/showthread.php?t=346287
https://forums.turbobricks.com/showthread.php?t=344679

Is your VSS signal the one I think it is? If so, it may not play...
Forum: maintenance & nonperformance 06-06-2020, 02:54 PM
Replies: 31
Views: 1,820
Posted By bobxyz
Are you running standard fuel pressure again? ...

Are you running standard fuel pressure again? Have you checked that the fuel pressure regulator is working correctly and that the vacuum line is dry (what's the pressure at the rail at idle and at...
Forum: maintenance & nonperformance 06-05-2020, 02:25 PM
Replies: 33
Views: 1,710
Posted By bobxyz
Clearly you must have riled the Old Norse gods of...

Clearly you must have riled the Old Norse gods of K-Jet. You'll need to ask the experts here what a suitable sacrifice is to restore their good graces.

If you want to take apart a Denso, see:
...
Forum: maintenance & nonperformance 06-05-2020, 10:43 AM
Replies: 33
Views: 1,710
Posted By bobxyz
Glad that it's working again, but I agree that...

Glad that it's working again, but I agree that it's weird that the densos failed.

AFAIK, there should be no problem running a 100A on an older car as long as it has a normal battery and the...
Forum: maintenance & nonperformance 06-04-2020, 05:04 PM
Replies: 33
Views: 1,710
Posted By bobxyz
I thought about this a bit more and it still...

I thought about this a bit more and it still seems like it must be a bad diode in the alternator(s). The wiring is simple enough - ground cable, +12 to battery via starter, and D+ exciter wire to...
Forum: article composition 06-03-2020, 04:08 PM
Replies: 213
Views: 178,192
Posted By bobxyz
Try removing the yoshifab adapter, rotating the...

Try removing the yoshifab adapter, rotating the gear by one tooth and re-installing (equivalent to rotating a standard distributor drive gear by 1 tooth). It should then match the descriptions...
Forum: maintenance & nonperformance 06-03-2020, 12:53 AM
Replies: 33
Views: 1,710
Posted By bobxyz
It sure seems like a shorted upper diode, but I'd...

It sure seems like a shorted upper diode, but I'd expect the light to stay on anytime the battery is connected (and not wait for the switch to be cycled to go on). Since you've seen this with 2...
Forum: maintenance & nonperformance 06-02-2020, 05:19 PM
Replies: 33
Views: 1,710
Posted By bobxyz
Is this the harness you have? ...

Is this the harness you have? https://www.240turbo.com/9139228newmed.jpg

If so, I was confused about the '79 connectors. The above picture shows a '79-only short little adapter piece that goes...
Forum: maintenance & nonperformance 06-02-2020, 04:18 PM
Replies: 33
Views: 1,710
Posted By bobxyz
If I understand, it hasn't worked correctly after...

If I understand, it hasn't worked correctly after replacing the harness and alternator. If so, I'd check the harness to make sure it wasn't mis-assembled. Unplug the exciter wire at the alternator,...
Forum: maintenance & nonperformance 05-29-2020, 07:43 PM
Replies: 14
Views: 1,309
Posted By bobxyz
I didn't see it mentioned, so any chance the...

I didn't see it mentioned, so any chance the intake hose or something in the air box is getting sucked shut and cutting off air to the engine?
Forum: maintenance & nonperformance 05-29-2020, 02:58 PM
Replies: 2
Views: 609
Posted By bobxyz
From Dave's website: "An extensive 13 page PDF...

From Dave's website:
"An extensive 13 page PDF INSTALLATION GUIDE may be viewed here (0.8 mb pdf):
https://www.davebarton.com/pdf/HarnessLH2.2EZK.pdf"

I'd start with this ^^^ and ask questions...
Forum: maintenance & nonperformance 05-28-2020, 09:40 PM
Replies: 31
Views: 1,820
Posted By bobxyz
Do you have any ECU or EZK diagnostic codes? If...

Do you have any ECU or EZK diagnostic codes? If not, the wiring between ECU and EZK is most likely good.

Some cheap meters have frequency/pulse width measurements ("Hz" or similar) that expect...
Forum: performance & modifications 05-28-2020, 05:32 PM
Replies: 9
Views: 1,157
Posted By bobxyz
The B21FT blocks that I've seen ('82, '83, '84)...

The B21FT blocks that I've seen ('82, '83, '84) all have the 4 red circled studs.

I think the normal B230F blocks also have the same 4 mounting holes, but use bolts instead. I'm not sure if the...
Forum: aftermarket engine management 05-28-2020, 05:23 PM
Replies: 20
Views: 1,542
Posted By bobxyz
I'd still like to see the full schematics for the...

I'd still like to see the full schematics for the CORE4 board. If the _only_ thing on the VSS signal between the connector pin and the CPU is the 2.5K pullup to +5volts, you may have damaged the CPU...
Forum: performance & modifications 05-28-2020, 09:16 AM
Replies: 9
Views: 1,157
Posted By bobxyz
These should help: B230 Accessory bracket on a...

These should help:
B230 Accessory bracket on a B21? (http://forums.turbobricks.com/showthread.php?t=353723)
-92 vs 93 240 AC Brackets (http://www.forums.turbobricks.com/showthread.php?t=348196)
Forum: performance & modifications 05-27-2020, 07:53 PM
Replies: 56
Views: 3,926
Posted By bobxyz
^^^ sorry, looks fine (with only the one plug on...

^^^ sorry, looks fine (with only the one plug on front end). Just to cover the bases, where is your turbo oil feed line connected? Any chance it got moved from an oil galley hole to a coolant hole?
Forum: aftermarket engine management 05-27-2020, 02:31 PM
Replies: 20
Views: 1,542
Posted By bobxyz
Can you generate a high speed log of the VSS pin?...

Can you generate a high speed log of the VSS pin? Or, try configuring it for flex, with a fully fixed table, and see if the flex % changes reasonably (probably only over part of the MPH range)? ...
Forum: aftermarket engine management 05-26-2020, 07:01 PM
Replies: 20
Views: 1,542
Posted By bobxyz
OK, you shouldn't need any external pullup if the...

OK, you shouldn't need any external pullup if the CORE4 matches that ^^^ schematic.

If you're stopped, the VSS signal will be 5volts. Once you start moving, there will be brief pulses going down...
Forum: aftermarket engine management 05-26-2020, 04:23 PM
Replies: 20
Views: 1,542
Posted By bobxyz
Can you post a link to the CORE4 schematics? It...

Can you post a link to the CORE4 schematics? It is open source, right? Or are folks already doing non-open knockoffs? Maybe the flex fuel input is for a 12v signal, or has some sort of additional...
Forum: aftermarket engine management 05-26-2020, 12:01 PM
Replies: 20
Views: 1,542
Posted By bobxyz
The chip in the speedo that drives the VSS signal...

The chip in the speedo that drives the VSS signal is a UAF2115 - try a google and rummage around a bit for a good pdf. Pin 3, the "taximeter" output, is an open-collector driver. It should work...
Forum: projects & restorations 05-25-2020, 12:05 PM
Replies: 43
Views: 5,005
Posted By bobxyz
yes, the white connector is for cruise control (a...

yes, the white connector is for cruise control (a black ~6"x6"x1" box, from Dana Corp.), and the crusty can is a vacuum reservoir for the cruise control.

If you don't have one already, get a copy...
Forum: performance & modifications 05-22-2020, 06:47 PM
Replies: 2
Views: 761
Posted By bobxyz
Try a bicycle pump to the gauge to make sure it's...

Try a bicycle pump to the gauge to make sure it's actually working, and somewhat accurate. Most anywhere off the intake manifold (on the manifold, not the throttle body before the butterfly) should...
Forum: maintenance & nonperformance 05-22-2020, 06:35 PM
Replies: 16
Views: 1,197
Posted By bobxyz
With the bezel off and key on, try pressing the...

With the bezel off and key on, try pressing the tiny little Reset button on the main unit. Does the blue[?] led on the main unit blink? If not, try wiggling the wiring harness and see if it comes...
Forum: performance & modifications 05-21-2020, 07:43 PM
Replies: 4
Views: 764
Posted By bobxyz
I know almost nothing about 940s, but the...

I know almost nothing about 940s, but the temperature sender for a LH2.2 240 is a 2-pin single-sensor sender (the LH2.4 240 senders are 2-pins dual-sensor senders, using the engine block for ground)....
Forum: maintenance & nonperformance 05-20-2020, 07:55 PM
Replies: 44
Views: 2,849
Posted By bobxyz
Can you get to the 2 wires to the motor? If so,...

Can you get to the 2 wires to the motor? If so, try swapping them and see if you have lots more flow.
Forum: maintenance & nonperformance 05-20-2020, 09:15 AM
Replies: 7
Views: 825
Posted By bobxyz
Rotate it to TDC, peer through the oil filler cap...

Rotate it to TDC, peer through the oil filler cap and check that the cam lobes for #1 are upwards to left/right - there are 2 TDCs per engine cycle, you want the one with the #1 valves closed. ...
Forum: maintenance & nonperformance 05-19-2020, 08:03 PM
Replies: 3
Views: 816
Posted By bobxyz
Try swapping around a couple spark plug wires, or...

Try swapping around a couple spark plug wires, or water mist it lightly with the lights out and see if there's a visible discharge between the distributor and #1. Also check the distributor cap for...
Forum: maintenance & nonperformance 05-19-2020, 08:00 PM
Replies: 9
Views: 961
Posted By bobxyz
You can check the resistance with key off and CPS...

You can check the resistance with key off and CPS unplugged of the two outer CPS pins, on the harness side, to the battery ground post. It should be a fraction of an ohm - the 2 outer pins are...
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