Valve springs

G

grasstrackpete

Joined Sep 2008

299 Posts | 1+

Up North Uk

• Oct 26, 2008

• #21

you can try them on mine for free
when i was on tool van yest, i saw a nifty gadget for removing springs without removing head!! you seen em?

 

Taffy

Joined Nov 2001

17K Posts | 774+

Ely, England

• Oct 26, 2008

• #22

this tool van yest? is she a dutch bird and can i mount up after you've finished?

the nifty gadget was a con dom. the spring was a dutch coil and as for removing the head, well.....i don't want to know!

would like a picture though!

regards

Taffy

 

S

sparks

Joined Sep 2006

989 Posts | 23+

Hayle Cornwall

• Oct 26, 2008

• #23

Enginehardware could be the best person to comment on the durability on these double valve springs, they have been using them under race conditions for some considerable time with good results I think.

Regards

Sparks.

 

S

sotosberg

Joined Sep 2007

147 Posts | 1+

Athens-Greece

• Oct 26, 2008

• #24

Has anyone install the dual springs from the FC 450?I think there are those that Bobzilla saw on bike bandit.Whts the difference with the kibblewaite's,jus the price?

 

S

sparks

Joined Sep 2006

989 Posts | 23+

Hayle Cornwall

• Oct 26, 2008

• #25

sotosberg said:

Has anyone install the dual springs from the FC 450?I think there are those that Bobzilla saw on bike bandit.Whts the difference with the kibblewaite's,jus the price?

Click to expand...

I think the FC450 comes standard with dual valve springs.
Kibblewhites have been making vlave springs and valves for quiet a number of years for high performance engines, so I think performance and durability is there main thing, and they are more cost effective the the OEM Husaberg springs.

Regards

Sparks.

 

O

oyk

Joined Jan 2005

344 Posts | 0+

kavala, greece

• Oct 26, 2008

• #26

hi, reliability is not an issue for the double springs set instead of the conical.
for 14 years my 1994 still runs the oem double springs set.

my question is regarding my 2008 fs650e and of course the nesecity to put double springs.
the fc450 has double springs but also has 4 titanium valves instead of steel the other models use. we all know how much lighter ti valves are.

so it makes a resonable sense that the fc450 double springs are softer than the conical.
so it would be a disaster fitting them to my 2008 fs650 i suppose..

any opinions on this please?
thanks

 

B

Badvoc

Joined Apr 2004

118 Posts | 0+

West Sussex, England

• Oct 29, 2008

• #27

Hi there’s some shady character selling these double spring kits on Ebay
Can these be used on an 03 FS650 with an “08â€Â

 

Taffy

Joined Nov 2001

17K Posts | 774+

Ely, England

• Oct 29, 2008

• #28

i've asked the shady character and he says no! seriously though - i'm not sure and i'll explainwhy! the 650 got a new cam for 2003 but none of the others did. they say that the FS650 '000' cam is just the '08' rebadged but i'm not 100%. the '000' is ok but the '08' not 100%.

maybe someone else here can help?

regards

Taffy

 

Taffy

Joined Nov 2001

17K Posts | 774+

Ely, England

• Oct 29, 2008

• #29

this is from the doc:

OEM camshafts 820.36.010.000 and H-200.342.08 share identical profiles. The later unit is shipped with a matched auto de-comp lever. 1mm lift / 0 Lash / Straight Up

so i guess you should be ok. memory is going see.....!

regards

Taffy

 

E

Enginehardware

Joined Mar 2005

250 Posts | 1+

West coast Sweden

• Oct 30, 2008

• #30

sparks said:

Enginehardware could be the best person to comment on the durability on these double valve springs, they have been using them under race conditions for some considerable time with good results I think.

Regards

Sparks.

Click to expand...

The knibblewhite we use, that normally fits the KTM450SX, lasts for ever, in all these years we only had one failure and we suspect the outer spring material disorder, the valve was hold up by the inner spring so no damege.

Works fine for us, and we will not test anything else at this moment.

//Thomas

 

G

grasstrackpete

Joined Sep 2008

299 Posts | 1+

Up North Uk

• Oct 30, 2008

• #31

Didnt notice anyone asking for people to test anything like? Or am i missing something?

 

H

Husa98

Joined Jul 2002

201 Posts | 0+

Zwiesel, Germany (Bavarian)

• Mar 23, 2009

• #32

Started my 550 on saturday after changing the springs.

A few kicks and the engine runs fine (with the old fuel)

The engine is now really more quiet, the mechanical noise is reduced.

unfortuanally I can´t do a test ride, because we have a lot of snow yet.


@Taffy: I hope I´m right by using no of the two diifferent shims.
But I´m between your tolerance of the installed height without them.

Thanks!