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Cam timing tool question
When your timing your early style cams (65 up to 83?) you have a nice cut surface on the nose of the cam to put your tool on for turning the cam during timing. On the later style cams with a bolt, what do you use to turn the cam?? Right now I'm using the bolt and some washers and then tighten it up on the cam, but when your turning the cam CCW under valve spring pressure during cam timing, the bolt wants to come loose. Is there a proper tool for this job?
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Mark Jung Bend, OR MFI Werks.com Last edited by 356RS; 04-25-2008 at 05:31 AM.. |
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Early cams are easy because they have a 17mm flat surface on the snout of the cam. THe later style with the bolt is harder because there's nothing to grip. There used to be a tool for that but I don't see it on SIRTOOLS (sold here by our host) site anymore...
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Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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Join Date: Jan 2005
Location: KENDAL,CUMBRIA, UK
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Regards mike 1983 911 SC sport, 1982 mini city |
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Thanks Mike.
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Mark Jung Bend, OR MFI Werks.com |
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Less brakes, more gas!
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I used a very small screwdriver to lever the cam against the chain sprocket for very small movements. Set and check, adjust, set and check... etc... See:
Timing curiosity/observation Best regards, Michael
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Join Date: Mar 2001
Location: Marysville Wa.
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you don't need to turn the cam on the later style. you set up the dial gauge as usual for timing the cams, then turn the engine to the point where the cam timing is what you want, regardless of where the pulley mark ends up, then pull the pin from the sprocket and turn the crank back or forward to the TDC Z1 mark and reinstall the pin in the sprocket. snug the bolt and recheck the timing and do a minor readjust if needed.
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Now that really explains how to do it. So simple. Thank you John.
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Mark Jung Bend, OR MFI Werks.com |
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Less brakes, more gas!
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Quote:
![]() ![]() Best regards, Michael
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![]() ![]() '82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah '13 Cayenne GTS |
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