8 replies to this topic

[Dingus]

Does anyone happen to know the compression height of a standard 998 piston? 

 

 

[Spider]

There were many 998 pistons and not all the same.

 

Got the numbers on the crown?

[Dingus]

Of course there were  I thought they were all the same apart from the press fit vs floating pins. Back to google.

[nicklouse]

IIRC Vizard list most of them in his big book.

 

 

don't have it to hand ATM.

[Dingus]

Yellow  Bible lists aftermarket ones, but I can get what I need from the list :) Cheers.

[Dingus]

FYI and for the benefit of future 'search' users, smallbore piston compression heights are as follows (according to Vizard) 

 

998:      1.333"

1098     1.194"

 

 

[Spider]

FYI and for the benefit of future 'search' users, smallbore piston compression heights are as follows (according to Vizard) 

 

998:      1.333"

1098     1.194"

 

 

 

There is a few more than that for the 998, I have listings of;-

 

1.339"

1.345"

1.336"

1.325"

1.326"

 

+ a few more.

Edited by Moke Spider, 20 January 2017 - 07:41 PM.

[Dingus]

Thanks for that mate. Are these aftermarket are factory variations?

[Spider]

Thanks for that mate. Are these aftermarket are factory variations?

 

Those I've listed are just some of the factory ones, there's a few more.