FAST-XR EVIL T Member 259 Member For: 16y 5m 10d Gender: Male Location: Liverpool NSW Posted 06/08/12 04:35 AM Share Posted 06/08/12 04:35 AM Currently mods as per signiture.While being tuned the car started valve floating at 14-15psi at top end, so the tune was backed off a couple of pounds to be safe.Currently running stock dump into 5" 100 cell cat, stock cat back...If I was to upgrade the full exhuast, would it relieve the valve springs enough to push the tune a little further? or at least be making more power at the same boost level?currently around the 300rwkw mark, was hoping to push 320-330 without having to do valve springs. Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/ Share on other sites More sharing options...
AirStrike Donating Members 387 Member For: 16y 5m 27d Gender: Male Posted 06/08/12 04:40 AM Share Posted 06/08/12 04:40 AM Or you could just do valve springs. 4 Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275408 Share on other sites More sharing options...
FAST-XR EVIL T Member 259 Member For: 16y 5m 10d Gender: Male Location: Liverpool NSW Posted 06/08/12 04:44 AM Author Share Posted 06/08/12 04:44 AM thanks for such a useful post! Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275412 Share on other sites More sharing options...
james3024 Member 61 Member For: 14y 7m 18d Posted 06/08/12 05:08 AM Share Posted 06/08/12 05:08 AM I'm pretty sure a dump pipe may just help u get same power with a little less boost but if your looking at a dump pipe y not just do valve springs instead 1 Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275419 Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 15y 4m 1d Gender: Male Location: Christchurch, New Zealand Posted 06/08/12 05:12 AM Share Posted 06/08/12 05:12 AM even if you did something else in time your going to need springs as they will soften more. So it was quite a useful post to be honest, just spend the money and do the springs. 2 Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275420 Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,332 Member For: 19y 7m 26d Gender: Male Location: Perth Posted 06/08/12 05:25 AM Share Posted 06/08/12 05:25 AM 5 Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275423 Share on other sites More sharing options...
stee3 Member 194 Member For: 13y 10m 24d Posted 06/08/12 05:26 AM Share Posted 06/08/12 05:26 AM How many KM on it? The valve spring in a BF II should be good for close to 400... When do you feel it valve floating under load or when it goes back to idle? Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275424 Share on other sites More sharing options...
FAST-XR EVIL T Member 259 Member For: 16y 5m 10d Gender: Male Location: Liverpool NSW Posted 06/08/12 05:35 AM Author Share Posted 06/08/12 05:35 AM On 06/08/2012 at 5:26 AM, stee3 said: How many KM on it? The valve spring in a BF II should be good for close to 400... When do you feel it valve floating under load or when it goes back to idle?89k on the clock, I also thought they would be good for more than 300kw, but I suppose you win some you lose some!I am going to have to do the dump pipe, with or without upgrading the valve springs. Just wanted to know if it will give me an extra few pounds to play with, or if id be wasting my time...thanks ralph, I like it! haha, it is a bandaid solution, but if its a 3psi solution ill be happy! Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275431 Share on other sites More sharing options...
spinr33 Donating Members 964 Member For: 13y 9m 2d Posted 06/08/12 06:46 AM Share Posted 06/08/12 06:46 AM You will make more power with valve springs then the dump pipe if you want more power you would do valve springs 2 Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275447 Share on other sites More sharing options...
riptide Member 733 Member For: 14y 4m 1d Gender: Male Location: Auckland, New Zealand Posted 06/08/12 08:02 AM Share Posted 06/08/12 08:02 AM I've been running ~17psi with the same springs and about 180k on the clock and no noticeable float. Just wondering what the PSI limit is with the BFll springs and is there much risk of valve damage etc?We had 420kw out of it on the dyno with the same springs.Never really thought much more about it until reading this. Link to comment https://www.fordxr6turbo.com/forum/topic/81302-4-dump-will-it-help-take-the-load-off-valve-springs/#findComment-1275486 Share on other sites More sharing options...
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