Escort Sigma 1600 Race Car

[Roadsport]

Re: Escort Sigma 1600 Race Car

Yep. Off with the diff... the local motorsport dealer had a set of bearings in the shelf

[Tristan]

Re: Escort Sigma 1600 Race Car

are the bearings shot Markus?

[Roadsport]

Re: Escort Sigma 1600 Race Car

All seems fine looking at it and it feels good to hand but I hestitated to open the side bearings so I really cant tell yet. The back lash is ok and theres no play in the pinion flange the CWP looks good so I'm tempted to put it back and see how it goes. Even more so now that I'm up to my neck in trouble with an electrical fault that accured mysteriously during start up... Spent 8h on it yesterday but the problem is yet to be found. The loom seems ok and the ECU seems ok but obviously one of them is not telling the truth.

[Roadsport]

Re: Escort Sigma 1600 Race Car

This is getting seriously ridiculous. After a good 15 hours in total of measuring wires we've come to a conclusion that I have a f**ked up ECU in my hands.

[Tristan]

Re: Escort Sigma 1600 Race Car

how the fcuk could that have happened??

[Roadsport]

Re: Escort Sigma 1600 Race Car

Honestly, I don't have a clue. The voltage dropped whilst cranking the oil pressure up so I used a charger. I've done that before and had no issues what so ever.
Whilst investigating I found the ignition module connector (for some reason god only knows) wasn't completely in its lock. One these propably or combination of both. I honestly don't know. I took 3 hours off work the day before yesterday and drove the ECU to be fixed. It had one burned ignition related diod. I should be having it back today. When I do its pretty much make or brake time. The event is tomorrow

[Roadsport]

Re: Escort Sigma 1600 Race Car

On a more positive note the diff seemed quite fine. The bcklash had increased by 0,15mm since new. Some increase in backlash is normal, I think, but I don't know bow much is too much. The wear pattern was good, the rear was silent and there was no play in any bearings so It went back in as it was.
The metal in the magnets I was concerned about is off the half shaft splines. Not worn really but polished due to the wheel angles.
I'm glad thoug the flakes are in the magnets and not flowing around the cwp and bearings.

[Roadsport]

Re: Escort Sigma 1600 Race Car

I picked up the fixed ECU. Connected it and in blink of an eye it burned again. Miraculouslt we were able to fix it our selves with instructions from the manufacturer over the phone. Further investigatin pinpointed the issue to be in the ignition amp. module.
Tody is D-day. I've located a new module and will see later if our diagnosis is correct this time around. I can now tell stories about the midnight oil.

[RWD fords rule]

Re: Escort Sigma 1600 Race Car

The bcklash had increased by 0,15mm since new. Some increase in backlash is normal, I think, but I don't know bow much is too much. The wear pattern was good

If you mean the backlash has opened up to 0.15mm Total then that is fine, if it has increased by a further 0.15mm then that sounds like a lot of wear in such a short time!

The backlash setting for the Atlas axle is .005" to .008" or 0.127mm to 0.20mm, I don't know what the English axle backlash setting is as we don't usually work with them but I imagine it would be quite similar

What is the total backlash now?

Hope all goes well for you, you are being seriously tested with this car

[Roadsport]

Re: Escort Sigma 1600 Race Car

still home. With the new ignition module. It starts perfect and runs ok for 3 sec then dies. Ive checked and double checked everything but theres something I just can see. Oh and I've lost the lambda sensor. Draws nothing but straight line... ... ... I'll stick around for a bit longer.

[Roadsport]

Re: Escort Sigma 1600 Race Car

[Tristan]

Re: Escort Sigma 1600 Race Car

surrender?

[Roadsport]

Re: Escort Sigma 1600 Race Car

Well, I did't at first. At ten a clock on friday night we got the car running. I drove to the race venue and steyd the night at the paddock. In the morning I went for the free prctise run to see if the fuel maps were right and the car wasn't running lean. While accelerating to the track the car stalled emmidiately. Tried again and it just could not take any throttle while under even a minimal load. Then I retired. Tried out different map, chencked the throttle position sensor but nothing worked. It runs nice on neutral but can't take any throttle under load. Then I retired. My fastest propably, didn't even make it to the track.

[sholdowa]

Re: Escort Sigma 1600 Race Car

bugger. fuel?

Tried this??? http://www.youtube.com/watch?v=T8YFxuKrJBI

[Roadsport]

Re: Escort Sigma 1600 Race Car

Well, the pressure is good and it does not drop while revving. Can't see how even a minimal ammount of load would affect the otherwise fine fuel pressure.