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Recommended Posts

Posted

Hi,

I'm about ready to start my clutch replacement project on my 997.

I received all my big expensive parts (pressure plate, disk, and fly wheel from rock auto and the rest from Sunset including fly wheel screws. I just measured the screws on my inaccurate kitchen scale and it appears that the fasteners vary in weight whereby weighing them in pairs result in 1gm difference. (not an accurate scale so I use pairs)

I remember that the last time I put together a 11 second quarter mile engine i was overly concerned with fly wheel bolts on a Chevy LT-1.

Should I be concerned with this minor weight issue?

I was considering purchasing an accurate scale 0.1 gm tolerance and perhaps file the screws until I'm with 0.1gm.

Any comments?

Thanks.

  • Moderators
Posted

Hi,

I'm about ready to start my clutch replacement project on my 997.

I received all my big expensive parts (pressure plate, disk, and fly wheel from rock auto and the rest from Sunset including fly wheel screws. I just measured the screws on my inaccurate kitchen scale and it appears that the fasteners vary in weight whereby weighing them in pairs result in 1gm difference. (not an accurate scale so I use pairs)

I remember that the last time I put together a 11 second quarter mile engine i was overly concerned with fly wheel bolts on a Chevy LT-1.

Should I be concerned with this minor weight issue?

I was considering purchasing an accurate scale 0.1 gm tolerance and perhaps file the screws until I'm with 0.1gm.

Any comments?

Thanks.

I install a lot of flywheel and pressure plate bolts which are sourced from Porsche. I have never weighed any of them, lost any sleep about it, or ever had a problem with them, other than their cost. I think you would also find that the pressure plate, disc, and especially the flywheel are well more than a gram out of balance as well.

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