Dane Posted February 1, 2008 Share Posted February 1, 2008 Would it be practical to use another method to restore timing chain tension after a head shave aside from shimming the cam towers? In the How to Modify book, on page 81, there's a picture of a timing chain tensioner with bolt holes that have been slotted. That would pick up a little slack. Then there is this: http://www.thezstore.com/page/TZS/PROD/PRC16/10-5452 http://www.thezstore.com/page/TZS/PROD/PRC16/10-5470 The twin idler gear kit is pretty expensive...but if you used that or the adjustable tensioner it could probably make up the tension lost from reduced distance between the cam and crank. Cam timing could be corrected with an adjustable cam gear...or if it isn't shifted too much, you could choose between the three timing settings on the stock cam gear. The benefit to this is that you could do the P79/P90 head shave without shimming the cam towers, using N42/N47 valves, and shimming the valve springs. Is there any chance this would work or am I way off base? Quote Link to comment Share on other sites More sharing options...
katman Posted February 3, 2008 Share Posted February 3, 2008 How much did you shave the head? We regularly removed up to .025 and slotted the curved guide on our ITS engines. I think the L28 part number for the curved guide has a smidge more meat on it for doing that. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted February 3, 2008 Share Posted February 3, 2008 Is there any chance this would work or am I way off base? It would definitely work. Quote Link to comment Share on other sites More sharing options...
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