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> 3D914s 914-6 SHO 3.2L v6, Build Thread - Project for sale. See classifieds
3d914
post Nov 22 2012, 02:16 PM
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Got the hose for the PSP yesterday. I'm only keeping it for the pulley. I'll run a loop with fluid. And the ignition switches I needed cam in - so I hope to get this finished up and ready to test this weekend.

I'll post an invite to see if anyone's interested in coming out to SE AZ for some 914/SHO fun & see if this thing runs.

ENjoy your Thanksgiving!
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Eric_Shea
post Nov 22 2012, 04:26 PM
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Purdy 74.

Can't wait til that SHO gets running. I remember burying that speedo coming back from Flint to Lansing one night.
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3d914
post Nov 28 2012, 06:50 PM
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Wiring is all in and going through double-checks now. Expect to do the turn-over to build oil pressure this weekend, then next weekend is the bench-test day to get this SHO started.

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3d914
post Dec 2 2012, 03:08 PM
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HooRa! Got oil pressure. Just finished spinning up the SHO motor to test oil pressure before starting it the first time (next Saturday).

Using the stock instrument cluster simplified things. With power on I got Oil, Batt, and Check Eng lights. Once I started the motor, all went out except oil pressure. About 45 seconds later - oil pressure went out. Gotta love it when things work.

Here's the video.
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914GT
post Dec 2 2012, 08:01 PM
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Hi Gerard,

I'd like to make a run down to Benson one of these weekends and check out your project. It's looking really good.

Guy
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3d914
post Dec 8 2012, 10:26 PM
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Well we had a nice gathering for the "Get the SHO Started - Take 1". Here's some of the cool vehicles that showed up.

Jason's 993 Carrera
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Rich's SHO
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Guy's 914-V8
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3d914
post Dec 8 2012, 10:28 PM
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OK, now for the event details. Let's just say we had partial success. The motor started, fuel pump & relays all worked, tach signal was good, etc.

Here's the video.

There was some bad news though. Something in the wiring caused the PCM to go into limp-home mode - permanently. We weren't able to even pull codes on it. We tried a second PCM and got the same thing.

So now it looks like I'll be retracing all the wiring (again) to find the issue. Keep ya posted.
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Mike Bellis
post Dec 8 2012, 11:03 PM
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(IMG:style_emoticons/default/sad.gif) You'll get it figured out.

I'm afraid of the same thing when I start mine. I did have my ECU flashed to take out all the devices that can put it into limp mode. We shall see...

Keep at it. I want to see that thing drive! (IMG:style_emoticons/default/beerchug.gif)
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3d914
post Dec 9 2012, 09:25 AM
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QUOTE(kg6dxn @ Dec 8 2012, 10:03 PM) *

(IMG:style_emoticons/default/sad.gif) You'll get it figured out.

I'm afraid of the same thing when I start mine. I did have my ECU flashed to take out all the devices that can put it into limp mode. We shall see...

Keep at it. I want to see that thing drive! (IMG:style_emoticons/default/beerchug.gif)


Thanks, Mike
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914GT
post Dec 9 2012, 07:15 PM
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Hi Gerard,

Glad I came down to see your project yesterday, as well as see you again since its been a few years. I know you'll do fine chasing down a few snags. That's the fun of doing these conversions (except when it costs $$). You're not that far away from me. We'll have to keep in touch. Thanks again for the food too.

Guy
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3d914
post Dec 13 2012, 04:51 PM
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Guy, Glad you could make it & I can use the support. As much as I'm enjoying this approach, I sometimes wish I'd taken a simpler route. Those V8's like yours sure sound sweet!
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Cairo94507
post Dec 13 2012, 05:46 PM
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When you get that Yamaha engine dialed in you will be smiling from ear to ear. My brother had a '91 SHO and that car screamed. In a 2100 pound 914 that is going to be blistering fast.
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Tilly74
post Dec 13 2012, 06:00 PM
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Yamaha engine? Enlighten me please?
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rktmn247
post Dec 13 2012, 11:27 PM
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QUOTE(Tilly74 @ Dec 13 2012, 02:00 PM) *

Yamaha engine? Enlighten me please?


Yes, built for ford by yamaha.

http://en.wikipedia.org/wiki/Ford_SHO_V6_engine
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AZ914
post Dec 14 2012, 02:32 PM
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Gerard, how is the wire tracing going?
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3d914
post Dec 14 2012, 05:05 PM
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QUOTE(Tilly74 @ Dec 13 2012, 05:00 PM) *

Yamaha engine? Enlighten me please?


Tilly, here's a pic of the 3.2L SHO motor on the test stand.
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3d914
post Dec 14 2012, 05:20 PM
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QUOTE(AZ914 @ Dec 14 2012, 01:32 PM) *

Gerard, how is the wire tracing going?


Jason, not too bad. Here's the codes that we pulled, so I've started chasing down the wiring first, then follow with component check-out.
  • 26 - MAF (out of range)
  • 51 - ECT (coolant temp signal too high)
  • 95 - FP ground circuit (Fuel pump: open, bad ground or always on; bad fp ground or open between fp and pin 8 at PCM)
  • 65 - Check intermittent HO2S (signal or ground)

So far I've verified the wiring is good for the heated O2 sensors. It's just that I have 4-wire O2 sensors (for 3.2 ECU) when I should have 3-wire since I'm using the 3.0L ECU. Using the manual trans ecu (PCM) from the 3.0L setup is easier as far as the computer goes - but the differences in wiring have tripped me up more than once.

Wiring checks for all others (MAF, FP, & ECT) look good also. There is one thing that's odd though. I'm not using the stock Constant Control Relay Module (CCRM), so I came up with my own custom one. Since I don't have a schematic for the 3.0L PCM's CCRM, I've had to improvise with the 3.2L CCRM diagram. There's one case where a diode is used to prevent a ground circuit from flowing back into the relay coil inputs for several of the relays. Since I haven't added that particular relay into the circuit yet I didn't bother with the diode, but I suspect it may be needed anyway. I think it's more than coincidence that the failing sensors tie through the same grounding circuit where that diode was used. We'll see.
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3d914
post Dec 20 2012, 01:19 PM
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I'm not completely done yet, but all my checks on the wiring so far are coming out fine. I'll be testing the sensors themselves this weekend & I do have to replace the 4-wire O2 sensors for 3-wire, so when they come in it'll be time for another test run.

I also have a D-type ICRM (CCRM) coming that I will try out if I continue to get errors. This is the stock relay module for FP, ECU, Fans, & A/C. Also gonna try a direct reset of the JX2 PCM that appears to be frozen. Keep your fingers crossed.
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Mike Bellis
post Dec 20 2012, 02:01 PM
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See if you can find an ECU breakout box. When I did my 914 5.0L Ford conversion, I had trouble running. I plugged in the breakout box, ran some tests and found a bad ignitor and low fuel pressure.

You might be able to find an old used no more breakout box somewhere

May not be the exact one...
http://www.ebay.com/itm/Ford-Rotunda-104-P...884&vxp=mtr
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3d914
post Dec 20 2012, 11:37 PM
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QUOTE(kg6dxn @ Dec 20 2012, 01:01 PM) *

See if you can find an ECU breakout box. When I did my 914 5.0L Ford conversion, I had trouble running. I plugged in the breakout box, ran some tests and found a bad ignitor and low fuel pressure.

You might be able to find an old used no more breakout box somewhere

May not be the exact one...
http://www.ebay.com/itm/Ford-Rotunda-104-P...884&vxp=mtr


Mike, I'll look into it. IIRC these are EEC-III or IV. Thanks for the tip.
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