yug_r34 Posted June 23, 2006 Share Posted June 23, 2006 As the topic states, I haven't driven my GTR in nearly 8 months - flywheel issues, but that's another story. What's the opinion on the standard valve springs? Will they be an issue seeings as some of them have been compressed for so long? eg. Possibility of valve float at high RPM. Fresh motor (3000kms) but std. springs. Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/ Share on other sites More sharing options...
GTRgeoff Posted June 24, 2006 Share Posted June 24, 2006 You should have no dramas as they won't be byond their elastic limit. What RPM are you planning? Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/#findComment-2281613 Share on other sites More sharing options...
yug_r34 Posted June 25, 2006 Author Share Posted June 25, 2006 Not sure what Ben's set the limiter at, but when I stuffed the flywheel, it spun around to 8500rpm, before I could get onto the clutch. I spin it to around 7500rpm when I'm on the gas. Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/#findComment-2283433 Share on other sites More sharing options...
Emre Posted June 25, 2006 Share Posted June 25, 2006 Stock cams...? If yes, I doubt there'd be an issue. They work OK even with larger Poncams. Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/#findComment-2284382 Share on other sites More sharing options...
yug_r34 Posted June 26, 2006 Author Share Posted June 26, 2006 Tomei Poncams 260in/ex cams, 9.15mm lift. Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/#findComment-2285884 Share on other sites More sharing options...
BBGTR Posted June 27, 2006 Share Posted June 27, 2006 Not sure what Ben's set the limiter at, but when I stuffed the flywheel, it spun around to 8500rpm, before I could get onto the clutch. I spin it to around 7500rpm when I'm on the gas. Just ask Ben, very few people seem to know more about these things than him. Regards Andrew Link to comment https://www.sau.com.au/forums/topic/123541-should-i-be-replacing-valve-springs/#findComment-2289466 Share on other sites More sharing options...
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