Supertech valve springs
#1
Supertech valve springs
Anyone who has looked at valve springs will have noticed the numbers between standard, FM, supertech etc etc but using the known values we can have a guess at where the potential for the unknown springs will fit.
Supertech has 5 spring sets in all two match FM specs so give us a set point of 9k redline and knowing that weaker forces means lower redline we can assume the lower valvespring is an OEM replacement. So this leaves us with two springs with very agressive rates 70lbs @ 33.50mm and 74lbs @ 34.20mm. Taking two approachs (log and linear) we can find the maximum redline for these springs seems to be over 11,000rpm.
Can anyone with these or perhaps information shared by Supertech give tested maximum as these seem perfect for my build.
Supertech has 5 spring sets in all two match FM specs so give us a set point of 9k redline and knowing that weaker forces means lower redline we can assume the lower valvespring is an OEM replacement. So this leaves us with two springs with very agressive rates 70lbs @ 33.50mm and 74lbs @ 34.20mm. Taking two approachs (log and linear) we can find the maximum redline for these springs seems to be over 11,000rpm.
Can anyone with these or perhaps information shared by Supertech give tested maximum as these seem perfect for my build.
#4
I am not asking about rods, cams or anything else. My friends miata has 214bhp on IRTBs and 9k redline so its not exactly hard for me to get the parts for raising the redline but he has gone solid lifter via custom engineering and I am trying to find the valvetrain parts for such an upgrade the rest I can already get.
Can someone with the structural engineering knowledge or experience of these valves tell me what there upper safe limit is?
Can someone with the structural engineering knowledge or experience of these valves tell me what there upper safe limit is?
Last edited by rrjwilson; 09-08-2009 at 07:25 PM.
#13
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Why do you want to rev so high? That is bad for the engine. I never rev over 3000 unless it's Sunday and then I go all the way up to 3500. My mechanic also tells me that if you double clutch, your valves will last longer.
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