some measurements:
stock(used) valve spring 39.2mm (38.3 wear limit)
stock vavle spring assembly complete (uninstalled) 43.4
KW complete assembly including black washer 47.3mm
KW without black washer 45.8mm (both KW also uninstalled)
stock(used) valve spring 39.2mm (38.3 wear limit)
stock vavle spring assembly complete (uninstalled) 43.4
KW complete assembly including black washer 47.3mm
KW without black washer 45.8mm (both KW also uninstalled)
Last edited:
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Taffy still hasn't read anything ive posted and can't decide what the seated force of his stupid expensive springs actually is ... its glaringly obvious hes a dyslexic incompetent idiot
point 1; I did not post at any stage that spaffys springs are actually the ktm set.
from page 1
point 2: I DO NOT ADVERTISE OR SELL KIBBLEWHITE SPRINGS !
Kibblewite are a large professional quality driven company who sell fantastic products they designed these springs for the KTM rfs engines from 400 up to 613cc and are well aware of the RPMs involved.
our valves, rockers guides etc are the same as the RFS engines components so whatever you need them to do in a husaberg .. they will do! if you are concerned talk to the engineers at Kibblewhite.
I personally know the 9696000 springs are safe to 10k with the stock cam and 65lbs seated because ive done that in my bike verified with a data logger. by extrapolating these results you can assume that if you need 12500rpm use 80-85lbs seated and they still take less power to run than Spaffys or the ktm set. you can even go to 95lbs seated and they still take less power to run.
point 3; despite his paranoia I did not post at any point that Spaffys springs are rubbish
my point is simply that contrary to his ******** advertising claim they do not reduce the seated force over oem by 40% they actually increase it and considering they are so similar to the KTM set they are very expensive
NOW TAFFY IM CALLING YOU OUT FOR BEING AN INCOMPETENT ABUSIVE FOOL
What is the seated force of your springs ? 5 years on and you still don't have the faintest idea!! and as such are in no position to claim your springs are better than any others or speculate on or even measure actual forces required to prevent valve bounce.
until he can post pictures and results of how he measured the forces involved with all 4 sets of springs in a stock head with stock valves on uncut seats the majority of us will have to assume he is completely full of **** and doesn't know what the forces of his or any other springs are
it is obvious that due to his ignorance of the forces involved he is simply trying to confuse and scare everyone into buying his expensive KTM ATV copy springs.
point 1; I did not post at any stage that spaffys springs are actually the ktm set.
from page 1
point 2: I DO NOT ADVERTISE OR SELL KIBBLEWHITE SPRINGS !
Kibblewite are a large professional quality driven company who sell fantastic products they designed these springs for the KTM rfs engines from 400 up to 613cc and are well aware of the RPMs involved.
our valves, rockers guides etc are the same as the RFS engines components so whatever you need them to do in a husaberg .. they will do! if you are concerned talk to the engineers at Kibblewhite.
I personally know the 9696000 springs are safe to 10k with the stock cam and 65lbs seated because ive done that in my bike verified with a data logger. by extrapolating these results you can assume that if you need 12500rpm use 80-85lbs seated and they still take less power to run than Spaffys or the ktm set. you can even go to 95lbs seated and they still take less power to run.
point 3; despite his paranoia I did not post at any point that Spaffys springs are rubbish
my point is simply that contrary to his ******** advertising claim they do not reduce the seated force over oem by 40% they actually increase it and considering they are so similar to the KTM set they are very expensive
NOW TAFFY IM CALLING YOU OUT FOR BEING AN INCOMPETENT ABUSIVE FOOL
What is the seated force of your springs ? 5 years on and you still don't have the faintest idea!! and as such are in no position to claim your springs are better than any others or speculate on or even measure actual forces required to prevent valve bounce.
until he can post pictures and results of how he measured the forces involved with all 4 sets of springs in a stock head with stock valves on uncut seats the majority of us will have to assume he is completely full of **** and doesn't know what the forces of his or any other springs are
it is obvious that due to his ignorance of the forces involved he is simply trying to confuse and scare everyone into buying his expensive KTM ATV copy springs.
Last edited:
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
unfortunately your lower seat is different to the ones I've installed so to be 100% sure you should either measure the seated force or confirm with kibblewhite they are super quick to respond to emails
i can tell you however that mine measured 72lbs seated when i installed them without adding the thinner black washer (my sets did not have this washer) this resulted in a preload of 6.8mm total on the springs.
ie if the springs I used are compressed by about 7 mm they are very safe
Last edited:
Joined Sep 2014
113 Posts | 61+
finland
Joined Sep 2013
209 Posts | 79+
Poznan, Poland
No. You need to machining little bit valve cover.
Is that necessary for 2005 fe450? And do you have original head photos. It can be good to see before-after photos.
Thanks.
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
that's excellent work Husabelg ... nice one
I did notice that using UK sourced exhaust valves there was light contact between the exhaust rocker arms and the KW titanium upper retainer.
I had to grind a small relief in the rockers
there is no such problem with Kibblewhite valves or the OEM 35/30s that i have here.
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