My clutch need changing, the car is on 95,000 miles and it has the original flywheel. So I'm judging that the flywheel will need changing as well. I was thinking about putting a light weight solid flywheel in, do you think the gearbox or something else will give as they have done a fair bit.

Whilst the clutch is being replaced, changing the flywheel won't hurt. 

 

The gearbox 'should' outlast the car (unless you launch at 5k every time) or you don't maintain the gearbox properly.

Hi JamieP86 thanks for the reply. I was asking more in regards about switching to a single mass flywheel on a high mileage gearbox.

Welcome to Briskoda.

 

Which engine version of Octavia do you have?, if it is a Vrs, then a single mass will make quite a difference, the weakness on a Vrs standard box is in the way the diff crownwheel is secured to the rest of the diff. It is rivetted rather than bolted, so diff breakups can be known as the power increases. You will find quite a few have had gearbox faiures on here on older cars, But in fairness, they were not designed with the sort of torque in mind that a modern mapper can liberate.

 

Is your car mapped?, if not then I would just go ahead with the single mass conversion. If, however, your car is a turbodiesel, then you might want to get opinions from others who have done this, as I believe drive train rattle at idle can be an issue with the single mass units and can be intrusive in extreme cases.

Edited 7 May, 20188 yr by kentphil1

52 minutes ago, kentphil1 said:

Welcome to Briskoda.

 

Which engine version of Octavia do you have?, if it is a Vrs, then a single mass will make quite a difference, the weakness on a Vrs standard box is in the way the diff crownwheel is secured to the rest of the diff. It is rivetted rather than bolted, so diff breakups can be known as the power increases. You will find quite a few have had gearbox faiures on here on older cars, But in fairness, they were not designed with the sort of torque in mind that a modern mapper can liberate.

 

Is your car mapped?, if not then I would just go ahead with the single mass conversion. If, however, your car is a turbodiesel, then you might want to get opinions from others who have done this, as I believe drive train rattle at idle can be an issue with the single mass units and can be intrusive in extreme cases.

I should of said, it's a vrs with a stage 1. Dyno chart says it's 210bhp. 

What sort of torque does the dyno say and at roughly what rpm?.