Quote:
Originally Posted by RBbugBITme
I was really hoping this would turn into a technical discussion about engine mechanics.... I guess its just not the place for it.
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There really isn't room for it in this thread as the question is limited to SR engines and we've already discussed why SR's generally can't rev high. We'd be going off topic if we wanted to talk about rolling rockers and pushrods. The only thing keeping anyone from revving high is their tune and flow so yeah, that's why we keep going back to it.
Quote:
Originally Posted by jspaeth
Are you running a stock bottom end? I could see headwork allowing for a small increase (maybe to 8K), but I am surprised that with the stock stroke, you can go to 9K....as someone said, peak piston speed plays a large factor.
Glad to hear it though, after some headwork, maybe I will raise mine to 8K...with cams and a GT2871R, maybe I could use the extra 500 RPMS...I could have sworn I've seen some dynos that pull to redline.....
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Only thing not stock are my ARP rod cap bolts... Stock stroke on an SR is perfect. 86mm bore and 86mm stroke. I don't know why people feel the need to change it. I was revving to 8k with a stock motor, not that there was any gain from doing that... I just remember hitting the limiter during gymkhana every now and then...