GD427 MK IV

GD427 MK IV
What my car should look like when finished - Stoneleigh 2015

Monday, 29 April 2024

Leaking Diff

I noticed a damp patch underneath the rear of the car and I assumed it was condensation from the exhaust

Although a closer inspection (smell) told me if was diff oil.  I had a good look around the diff and concluded it was coming from around the fill plug.  The level of the oil should be below the fill plug, but I have had the car at all sorts of angles lately so could have been that.  

I tried tightening the plug, but it was tight.  So I removed it for inspection.

The diff identification plate sits underneath the plug which I think is strange since it isn't a sealing washer...

On close inspecion of the plug, I could see an un-even mark - possibly caused by this identifiction plate.  I decided the plate would not be going back on, and I removed the step from the plug in the lathe.

I thought since I was in the diff, I would change the oil - it came with oil from the factory but I thought best to change it.  I spoke with Andy and got the newest spec of oil - (BTR Hydrotrack LSD:  recommended, Morris Lubricants Lodexol XFS 80w/140. Approximately 2 litres)

I drained the old oil out (the drain plug is also used as a diff cover bolt), re-fitted the drain bolt using threadlock and a seal, and filled the diff.  I put in 1.72 litres.  I put a Dowty washer (bonded sealing washer) on the plug and I left the ID tag off.  Problem solved.

Diff as it arrived

Diff as it arrived

Pre-Machining - You can see a raised section on the sealing face

Sealing face machined flat




Friday, 26 April 2024

Steering Wheel Move

With the steering wheel in place, it was very close to the side of the door - meaning your knuckles would very easily get hurt!

I looked at all the possible adjustments, but nothing would tilt the stereing wheel towards the centre of the car.  Instead, I installed some 8mm thick stainless steel spacers on the steering column mount and the dashboard frame itself to move the entire assembly.   Although only 8mm, it creates a lot more space for your knuckles when steering.



Thursday, 25 April 2024

Battery Tray Update

The battery tray was fitted a while ago and I always knew I needed to tweak the tray since the battery was slightly smaller.

I fitted an aluminium strip to the front of the tray, bolted in using countersunk set screws to make up for the thinness of the battery.  Instead of just an L shaped bracket pressing the battery down, I wanted to fit a full clamp to ensure the battery can't move.  I welded a stainless steel extension onto the originally supplied bracket along with an adjustable clamp.  I also fitted neoprene to the top of the tray so the battery can't slide.