Flywheel Replacement and ignition timing - Straight 6 engine

[S6PNJ]

Hi All,

I normally hang out in the Tuscan forum but this one seems to have more activity and as a lot of bits are shared, I thought I'd ask here.

I'm mid way (at the end or at the start - not sure which yet) of a clutch and flywheel refurbishment / replacement on my Tuscan. Notwithstanding all of the issues I've had so far, I'm now not sure if I've done the most basic of tasks correctly, so I'm seeking advice.

My mate (with 4 post ramp and a few other bits and pieces) is helping out and I'm (and to a certain extent - he) of the belief that I may potentially have put the flywheel back incorrectly. There are 8 bolt holes, 7 bolts and one locating spigot, so in theory, the flywheel can go back in one of 8 rotations.

Edited by S6PNJ on Thursday 31st July 17:49

[Supateg]

Isn’t the crank dowel & hole in the flywheel larger than the crank bolts like on the V8 flywheel? So that it can only go on in one position?

Have you disturbed the crank sensor? If you disturbed the wiring it should show a mil light but I think I read somewhere a duff sensor may only flicker the mil…more v8 related but the sensor & software are the same I’m led to believe.

[S6PNJ]

Supateg said:

Isn't the crank dowel & hole in the flywheel larger than the crank bolts like on the V8 flywheel? So that it can only go on in one position?

Quite possibly, but maybe without realising it, I have incorrectly positioned the flywheel and torqued it down onto the crank dowel - I think the only way to find out is to strip back as I don't know what else it can (or could) be as nothing else has been disturbed. Ok, I realise I've unbolted and rebolted / moved the coil pack and starter motor, but except for that (oh and removing / refitting the throttle cable onto the pedal box), I cant see what else can have affected the ignition / timing.

Supateg said:

Have you disturbed the crank sensor? If you disturbed the wiring it should show a mil light but I think I read somewhere a duff sensor may only flicker the mil more v8 related but the sensor & software are the same I m led to believe.

by crank sensor, do you mean the (and I'm guessing here) the Hall Effect sensor on the 'top' of the engine just behind where the flywheel goes and reads the teeth (and missing tooth) on the flywheel? If so, the plug has been removed (and refitted) but the sensor itself has not been touched.

[S6PNJ]

Well, I'm now back all connected with a working clutch etc. I've also trimmed my OP as some info is now not relevant.

I'm more than happy to hold my hands up when I've made a mistake - else how can others learn from my mistake? It's all a learning curve first time out so I now know for the next time I need to replace a SP6 flywheel / clutch.

The long and the short of it is that I messed up when replacing the flywheel - yes it CAN be put back incorrectly and everything replaced / refitted etc - as I have found out. Once I'd stripped everything back out, sorted out the hole I'd misaligned, bolted everything back together, it started on the button as was originally expected.

Phew!

Now I just need to replace all the 'other' bits and pieces - airbox, gearstick gaiter, centre console, bonnet etc - I can get it MOT'd and back on the road!

Note to self: When re-assembling - take more care in how things go back together and try to make notes (physical or mental) of how things come apart!

[Wacky Racer]

Always take photographs of each stage of strip down on any car or motorbike and label everything right down to the last nut and bolt.

Learnt my lesson forty years ago.