924Board.org

Dan · Joined: 27 Apr 2008 Posts: 24 Location: Great Yarmouth, UK

I'm trying to show the flat of the Grub which are bottom most in the picture, and the Grubs trajectory in relation to these flats, which way is correct?

Allan key adjustment through the higher or lower hole

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Dan

1979/924 N/A
Street Racer KTA508V
©2008

John Brown · Joined: 07 Nov 2002 Posts: 903 Location: Leesburg VA

The flat needs to be parallel to the cam. And the tip of the valve. The valve tip presses against the flat of the adjuster so that flat and the valve tip must mate full surface. The picture on the right.
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John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

This topic needs to moved to the correct discussion area.

Dan · Joined: 27 Apr 2008 Posts: 24 Location: Great Yarmouth, UK

Thanks John thats next job quite important to be right I thought

>>this topic needs to moved to the correct discussion area

Wheres the correct discussion area for mechanical help, its not clear, hasn't the 924s not got the cam followers, I'm discussing?

Cheers for your helpful advice though 'gohim'

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

No, the 86-88 924S has the same 2.5L engine as a 944, and it has hydraulic lifters. This is a completely different engine design, sharing no parts with the 924 2.0L engine.

You are asking about the mechanical lifters used on a 76-85 924 2.0L engine. The correct place for this discussion is the General Discussion Section where 924 2.0 mechanical issues are discussed.

Dan · Joined: 27 Apr 2008 Posts: 24 Location: Great Yarmouth, UK

Thanks now I know