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Post by perri2300 on Nov 30, 2018 12:01:31 GMT -5
Does anyone know the stock Rocker arm ratio on a 85 svo? I need the Rocker arm ratio because I am trying to calculate the maximum valve lift on on a mystery camshaft in the motor. The grind number on the camshaft was poorly stamped; therefore, I can not identify it.
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Post by Stinger on Nov 30, 2018 12:05:43 GMT -5
It varies a bit through the motion but it's 1.60-1.65".
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Post by perri2300 on Nov 30, 2018 12:17:24 GMT -5
Thank you. I made made my calculation based on a ratio of 1.6. maximum lobe lift= 0.240 and maximum valve lift= 0.384.
are these numbers stock, or is it an aftermarket camshaft?
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Post by Stinger on Nov 30, 2018 13:07:13 GMT -5
Sounds stock, though that's normally quoted closer to .400 at the valve. If it's a stock slider though it's normal to lose some lift as it wears out and they are all worn out at this point.
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Post by perri2300 on Dec 4, 2018 12:51:34 GMT -5
Thank you. I was told the camshaft was a "racing camshaft," but I had my suspicion that it was anything other than stock.
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