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A hydraulic roller FE turning 7500 rpm.... A hydraulic roller FE turning 7500 rpm....
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  #11 (permalink)  
Old 12-17-2018, 10:17 AM
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Join Date: Aug 2011
Cobra Make, Engine: ERA 427
Posts: 89
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Quote:
Originally Posted by blykins View Post
High rpm FE's have never been a problem. High rpm hydraulic roller FE's have been the bottleneck.

Lots of my customers want a little more rpms without having to run a flat tappet cam or the risk of a solid roller. Now we have options.

I took it to 7500 simply because I wanted to prove my rocker arm design. It went there very easily with only 200 lbs seat pressure and 500 lbs open.

We turn 8500-9000 rpms with <400 lbs seat pressure and 1200 lbs open pressure on my BBF pulling truck engines.....with almost 2.5" valves. The right cam lobe makes all the difference.
What are the risks of a solid roller?
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