Hello brothers. I need help. I already despaired, honestly. 
((((
Car: Clio RS 201, 2012 year, mileage 97000 km.
Briefly: every time I go to trackday, my starter is dying after 15-20 minutes of racing. Car - stock, starter heat cover is properly installed.
Here is my long story from the beginning.
1. I have rebuilt a gearbox, putting helical LSD there. Guys who made that, made that not good. I heard some strange sounds, looks like they did not adjust some bearings.
2. After two months of rebuild I've got huge vibrations from motor and noisy sound at 3000 RPM.
3. I thought that vibrations were caused by damaged fluted tube (two flexible tubes connected to exhaust manifold) and I have replaced them.
4. Vibrations were not gone, I have decided to ignore them for a while and I went to track there my first started was broken. It was dead because of internal wire breakage because of vibrations.
5. I have replaced starter by new and original one and went to track once again. Starter no. 2 was dead after 15 minutes of trackday. That was f###n surprize for me
6. I thought that I accidentially bought faultl starter (s**t happens) and I bought new one once again.
7. And yep. Starter no.3 died just after I started to race. Hahaha
8. I have found good mechanic and we started to find a reason. He have found some:
a) Motor and gearbox were not properly connected and also engine bearers were worn-out - we have found reason of vibrations
b) Сrankshaft pulley spline was broken and valve timing had 1.5 degrees offset
9. Valve timing belt was replaced, issues with motor/gearbox fitment and with timing were solved. I thought that we have found reason why my starters were breaking.
10. Yesterday I came to raceway and guess what was happened after 15 minutes of racing??? Yes, starter no.4 also was broken.
Additional information: every starter (except last one) had different reasons of death. But no one of them had traces of overheating - all of them had mechanical troubles, for example, with wiring or with magnets fixing (magnets were released and they caused breakage of mechanical parts of starter motor).
No here are two versions:
1. Operations with gearbox caused excessive vibrations and starter can be broken because of them during peak racing overloads.
2. Operations with exhaust caused excessive heating of starter and despite the fact that we have no traces of heat and we have properly installed heat cover, mistakes with exhaust operations caused issue with starter.
I don't know what to do, I can't fix the problem during last six months... now I want to burn my car in fire. Please help, maybe someone here know what is going on...
Thanks.
((((Car: Clio RS 201, 2012 year, mileage 97000 km.
Briefly: every time I go to trackday, my starter is dying after 15-20 minutes of racing. Car - stock, starter heat cover is properly installed.
Here is my long story from the beginning.
1. I have rebuilt a gearbox, putting helical LSD there. Guys who made that, made that not good. I heard some strange sounds, looks like they did not adjust some bearings.
2. After two months of rebuild I've got huge vibrations from motor and noisy sound at 3000 RPM.
3. I thought that vibrations were caused by damaged fluted tube (two flexible tubes connected to exhaust manifold) and I have replaced them.
4. Vibrations were not gone, I have decided to ignore them for a while and I went to track there my first started was broken. It was dead because of internal wire breakage because of vibrations.
5. I have replaced starter by new and original one and went to track once again. Starter no. 2 was dead after 15 minutes of trackday. That was f###n surprize for me
6. I thought that I accidentially bought faultl starter (s**t happens) and I bought new one once again.
7. And yep. Starter no.3 died just after I started to race. Hahaha
8. I have found good mechanic and we started to find a reason. He have found some:
a) Motor and gearbox were not properly connected and also engine bearers were worn-out - we have found reason of vibrations
b) Сrankshaft pulley spline was broken and valve timing had 1.5 degrees offset
9. Valve timing belt was replaced, issues with motor/gearbox fitment and with timing were solved. I thought that we have found reason why my starters were breaking.
10. Yesterday I came to raceway and guess what was happened after 15 minutes of racing??? Yes, starter no.4 also was broken.
Additional information: every starter (except last one) had different reasons of death. But no one of them had traces of overheating - all of them had mechanical troubles, for example, with wiring or with magnets fixing (magnets were released and they caused breakage of mechanical parts of starter motor).
No here are two versions:
1. Operations with gearbox caused excessive vibrations and starter can be broken because of them during peak racing overloads.
2. Operations with exhaust caused excessive heating of starter and despite the fact that we have no traces of heat and we have properly installed heat cover, mistakes with exhaust operations caused issue with starter.
I don't know what to do, I can't fix the problem during last six months... now I want to burn my car in fire. Please help, maybe someone here know what is going on...
Thanks.
