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what valve clearance for 1.5:1 ratio rockers?


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#31 MRA

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Posted 30 July 2007 - 05:36 PM

I wonder if anyone who has turboed a 998 got any increase from fitting 1.5:1 rockers..... bottom end would possibly lose out but once said turbo goes into spin mode, the extra valve lift etc........

Geting back to the subject, your engine would REALLY benefit from a "proper" rolling road setup including valve to rocker clearances etc..... it will need more than an hour though so be prepared to shell out....

And as someone else stated earlier a re-programmable ECU like DTA etc.. would make your more driveable and run a lot lot lot better :-)

#32 panelbeaterpeter

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Posted 30 July 2007 - 07:12 PM

Hmm yeah I know. there's not a rolling road anywhere near me I don't think. Anyone know of one in the Bristol area?

#33 MRA

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Posted 30 July 2007 - 10:15 PM

If you are going down the ECU route, then I can probably find one of my co-suppliers of DTA ecu's, however not all the DTA affiliated rolling roads will be any good for your dizzy operated ignition....................................

#34 bristolminimad

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Posted 30 July 2007 - 10:26 PM

spamspeed in dursley (10 miles outside bristol) are good, or if you fancy a trip down to slark (salisbury) they are second to none!




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