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| 997 valve springs. https://www.ausmini.com/forums/viewtopic.php?f=2&t=79904 |
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| Author: | haze blue 850 [ Thu Jan 10, 2013 9:48 pm ] |
| Post subject: | 997 valve springs. |
Greetings all. Re-assembling a Cooper 997 head after getting it machined. Measured the spring (s) length, and they are all around 4". The book says they should be 4 & 1/2". Would this effect the performance much? Alex. |
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| Author: | simon k [ Thu Jan 10, 2013 10:01 pm ] |
| Post subject: | |
Assuming you mean they're 4" uncompressed, and not installed in the head, they're either shorter springs than standard, or they've lost 1/2" of springiness. If they've lost springiness, then valve bounce will set in a lot earlier than if they were new I'd ditch them for newies - good springs are cheap |
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| Author: | haze blue 850 [ Thu Jan 10, 2013 10:08 pm ] |
| Post subject: | |
Thanks Simon. Sounds like a fresh set will make sure all's good. Cheers Alex. |
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