jordak Member 1,226 Member For: 20y 10m 23d Posted 07/09/04 10:34 AM Share Posted 07/09/04 10:34 AM I gather from reading various posts that the tolerance of stock valve springs seems to differ from T to T however I am keen to find out at what point the rwkw are likely to cause valve flutter. For those of us only wanting the limited thrill how far can we go ? Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/ Share on other sites More sharing options...
Blown BA In Your Face Member 6,195 Member For: 22y 1m 24d Gender: Male Location: Peninsula Posted 07/09/04 10:36 AM Share Posted 07/09/04 10:36 AM It range anywhere between 220 and 280. Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162624 Share on other sites More sharing options...
macka'sxr6t Member 1,480 Member For: 20y 11m 5d Location: Mildura Posted 07/09/04 11:06 AM Share Posted 07/09/04 11:06 AM Blown BA. Mine started at 260 brought it back to 256macka Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162649 Share on other sites More sharing options...
geea Site protagonist Lifetime Members 4,320 Member For: 21y 11m 21d Gender: Male Location: At the lights, waiting for you. Posted 07/09/04 01:30 PM Share Posted 07/09/04 01:30 PM Mine started to flutter just after 12psi @281rwkw's.This was done by Amberley Auto's in Melbourne, same as Blown Ba's.Geea. Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162721 Share on other sites More sharing options...
dingah2 Crusty aviator Member 846 Member For: 20y 10m 13d Gender: Male Location: ACT Posted 08/09/04 01:07 AM Share Posted 08/09/04 01:07 AM Function of the boost and therein exhaust and spring state. There is no specific answer as many run in excess of 300 KW (Flywheel) without an issue and some have run into the issue before getting that far. It appears that many now just take it as gospel and upgrade the springs regardless which makes eminent sense if you are going ever onwards and upwards with your power but if you are only in the Phase 1 to 2 game, why invest in a solution that has yet to identify the problem? Plan on it so that if it occurs during the tune - either backoff the boost or do the upgrade - that is more logical.Dingah Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162802 Share on other sites More sharing options...
jordak Member 1,226 Member For: 20y 10m 23d Posted 08/09/04 04:41 AM Author Share Posted 08/09/04 04:41 AM Function of the boost and therein exhaust and spring state. There is no specific answer as many run in excess of 300 KW (Flywheel) without an issue and some have run into the issue before getting that far. It appears that many now just take it as gospel and upgrade the springs regardless which makes eminent sense if you are going ever onwards and upwards with your power but if you are only in the Phase 1 to 2 game, why invest in a solution that has yet to identify the problem? Plan on it so that if it occurs during the tune - either backoff the boost or do the upgrade - that is more logical.Dingah DingahWhat you suggest makes perfect sense particularly given the range that Blown BA has sited. OK, so what exactly is valve flutter and how do you recognise it when it occurs?Steve Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162867 Share on other sites More sharing options...
Guest XR6Twish Guests Posted 08/09/04 04:47 AM Share Posted 08/09/04 04:47 AM It also comes down to the type of induction you have. A restrictive induction (stock intercooler etc) means that the turbo itself is pumping lots more boost than what is seen on a boost gauge. As a result the amount has a direct effect on keeping the valves open, or at least pushing them open as the boost rises.Low restriction systems are vastly less prone to this concern, and there is only one kit I know off that doesn't suffer at 300 or even 320 rwkw with valve spring flutter. Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162868 Share on other sites More sharing options...
jetute Donating Members 4,553 Member For: 21y 3m 1d Gender: Male Location: brisbane Posted 08/09/04 04:56 AM Share Posted 08/09/04 04:56 AM OK, so what exactly is valve flutter and how do you recognise it when it occurs?Steve what he said Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162870 Share on other sites More sharing options...
Blown BA In Your Face Member 6,195 Member For: 22y 1m 24d Gender: Male Location: Peninsula Posted 08/09/04 06:20 AM Share Posted 08/09/04 06:20 AM To put it simply when you boot it you'll here putputptut, and you will actually here the flutter happening, it's not a nice sound to here Yeh yeh putputptuttp Link to comment https://www.fordxr6turbo.com/forum/topic/12723-rwkw-vs-stock-valve-springs/#findComment-162896 Share on other sites More sharing options...
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