Posts

ECU heat and vibration reduction

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A friend recommended i get some isolation mounts to avoid having issues with the ECU, the theory is that vibration and heat kill ECU's quiet quick so it is ideal to mount them in locations that avoid these areas.  Using these isolation mounts i can fix the vibrations coming through from the chassis and also it increases the gap between the transmission tunnel and the ecu so improves the heat shielding.

Rear bar removal

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The rear bar set up has been worrying me a little as even with the sheet and air stakes i reckon it catches a lot of air down the straight. I removed the rear bar and think i might try and run the car without it next time with the aim of lessening drag.

Lithium battery

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After sitting at the workshop for a couple of weeks and then trying to start the previous battery i had been using died, i tried to charge it back up but it started to get really hot and would not fully charge. I think it might have lost a cell. I purchased a new lithium battery recently after talking with a couple of the guys and it arrived very quickly, it was only 0.8kg so super lightweight. Unfortunately after installing i found it was simply too small for my vehicle as it would not start it without adding in an additional jump start battery. The Lithium battery i thought was 12ah which was close to what i was using before but found it was actually 4ah, also the CCA was 195 and it probably needs closer to 400 to start the car

Remember to tighten those wheel nuts

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After picking up the car from ASR this morning who sorted the clutch install and machining of the input shaft for the clutch. I got 5min down the road and saw the trailer wheel bouncing off into the bushes, cars swerving to miss it. Andrew brought up some wheel studs for me which was nice bit ended that the studs were stripped and that I needed to get new studs. NRMA came out and the nice guy offered to go down the road to get some new studs which we promptly installed and in was on my way.

Towing Weight Check - Race Car & Trailer

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For those towing with there cars it pays to check things out. Got mine weighted today and with nothing in the car (I usually have a lot of tools etc) and nothing in the cruiser but a full tank it was the following.  Remembering that my trailer is 2000kg max total weight On Ball Weight 1820kg trailer (ATM) 3200kg car (GVM) Off Ball Weight 1990kg Trailer (ATM) 3030kg Car (GVM) 5020kg Total (GCM) Ball weight 170kg Leaves 10kg to play with on the trailer (not sure if I even have a full tank in the Nissan)

Trailer tyre issues

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Found an issue with clearance on the trailer of the rear tyres. The center guard has a support and it is very close to the rear tyres, it seems to have started to rub causing a section of the tyre and be worn down. I need to cut it off and then weld it back on to fix it.

Understanding the possible reason for the clutch failure

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Andrew from ASR picked up on an issue today that was missed in the previous install and most likely would have been the cause of the clutch failure. Using a flat ruler he checked the flatness of the clutch discs and found them to be bent out in the center, this was very odd and along with the failure of the retaining plates, which he had never seen before just didn't seem right. In the installation instructions it shows that 4mm must be taken off the center shaft otherwise it can cause a failure. Checking with another box he was able to confirm that that 4mm was not taken off the input shaft which meant the center bearing was pushing too far into the center of the clutch and bowing out the clutch discs eventually causing the retaining plates failure.