924Board.org

[Karlio]

Any thoughts on what the maximum that an N/A block can be decked before it becomes an interference engine?

A previous race engine i done had 0.5mm but i want to go a bit more adventurous

[daniel]

Have you considered a thinner head gasket (cometic)
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Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet

[Cedric]

I assume you run some other cam than the orignal one, so I think the only way is to measure what you have clearance wise and go from there.
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1980 924 Turbo
www.instagram.com/garagecedric/

[Karlio]

Yep running a modified Newman cam 290 deg duration with standard lift. Cometic 0.5 fitted as standard on the race car

[safe]

1.5 mm is fine. probably 2 also.

Don't get the non interference thing.... 90%of all engines are interference.
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/Magnus, Stockholm Sweden
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Porsche 924 -79 NA, EFI and Turbo.
Porsche 931 -79
Porsche 911 -77, 3.2 Targa
Porsche 911 -69, 3.6, Coupe