Help with diagnosing please. R32 with LSA and T56 lock up and noises.

[SmashBoxx]

Hey guys. 

Looking for some suggestions on a problem I have and things to check that I may not have thought of.

Diagnosing a fault in my R32 which is running a LSA and t56 and was its first drive when this occurred.

The motor was a brand new crate motor and the t56 was used and in unknown condition. I initially ran the motor in on a dyno under varying loads with no worries. Whilst further running the motor in at a track test and tune day also under varying loads and only revving to 4500rpm, after a few sessions in, on a straight in a high gear (still low rpm) I developed what sounded like knock. I slowed to pull off and when reaching a low speed, the car cut shut off completely. I towed into the pits and went to load up onto the trailer but the driveline had seemed to have locked and wouldn't roll on the trailer. Eventually loaded up and went home. Upon arriving home I for some reason decided to check if the car would move and crank, as it did not whilst trying to load it. Now it started and drove so I quickly drove it into the garage but it had a high pitched squeal whilst driving in 1st gear.

When I stopped, clutched and popped back into neutral, the noise stopped so I ran the car in neutral and revved a little to see if I could hear any knock but there was zero that I could hear but did not check with a stethoscope or extension or driver, etc.

The clutch is a NPC single plate (brand new) with supplied slave however I don't think the tolerances/ shimming were right within specification.

The master is a 3/4 random or ebay possibly even. I have a brand new wilwood to replace.

The t56 had a Ripshifter in it which may have been problematic.

I have started to pull the car down so am unable to put the car on stands and test for noises under load and with clutch in/out, etc unfortunately.

It's a bit of a puzzling one to narrow down completely but what I can think of is;

- Worst case, engine bearings (rod/ crank/ thrust) Would this still make noise whilst revving but not under load? Would any engine problem lock up the driveline but free up later?

- Clutch issue either loose bolts, contaminants in the bellhousing causing lock up and squeal, wear of clutch (manufacturing problem), Slave shimming caused failure.

- Gearbox issue, possibly lunched gearbox which locked up driveline or ripshifter engaging multiple gears have too much throw?

 

Additional information: I didn't have any data logging capabilities, however I did have GoPro helmet footage which I have checked thoroughly to see if the oil pressure gauge ever noted low pressure, which it did not.

Also, upon shifting, the revs always stayed quite high and didn't drop off which may indicate that the clutch wasn't fully disengaging and may have caused premature wear and failure?

 

 

Any other suggestions or thoughts/ opinions are greatly appreciated!
Thanks guys.

 

[SmashBoxx]

Also, did swap to t56 spigot bearing as it did have one for TR6060 which causes problems if running a T56. Spigot may have been slightly scored though.

Edited November 28, 2022 by SmashBoxx