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September 9th, 2014, 08:41 PM   #21
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Originally Posted by aerotech11 View Post
Thanks Hacker33 for the explanation. Does this help significantly?
the dual springs are softer overall so the parasitic power loss from operating the valve springs is reduced

the kibblewhite DVSK reduces the loads by the most significant amount but is the most expensive, ktm set is cheapest.

#PNs specs etc here

All About Valve Springs! (with nice pics)

the decomp spring is easy to modify if you can be bothered, details here Decompression spring

ive seen really bad case join leaks repaired with sikaflex 221, bike is turned upside down, cases degreased thoroughly with water based detergent and a generous (thick) amount of sika bog pasted over the area, there is a dr650 over here with a repair like that 60 000km and still going

Last edited by bushmechanic; September 9th, 2014 at 09:05 PM.
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September 10th, 2014, 02:28 AM   #22
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04 husaberg start problem

hey there guys,
I had start issues for a while on one of my 04 550 replaced battery and still no luck, later found one of the battery leads had broken quite a few copper wires in it , not getting enough current through to turn it over.
maybe something to check also.
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September 10th, 2014, 04:29 AM   #23
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Thanks for the info everyone. Bushmechanic, I appreciate the info on the valves. I will look into getting a set and also the Sikaflex 221. Looks promising and way easier than splitting the case. Will be ordering one of Taffys decomp springs and installing that.
Enginenumber thank you for the tip on the wiring. That thought never crossed my mind. I will be sure to check that this evening.
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September 10th, 2014, 05:22 AM   #24
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Originally Posted by husabutt View Post
The oil in the intake tract is normal. It bothers some. You can always do a "breather mod". Nice thing about venting the crankcase to somewhere else besides to the carb is that in the unlikely event you flip the bike over upside down your cylinder and carb will not fill up with oil.
If tipping bike upside down is an unlikely event you're not riding tough enough terrain!! Get it dirty!
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April 3rd, 2016, 01:02 PM   #25
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seal once

what seal once product do you use as i have slight oil leak from centre of crankcase
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April 3rd, 2016, 04:12 PM   #26
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sikaflex 221 or threebond 1207b

sika221 is a polyurethane and dries strong

the threebond 1207b is a solvent free roomtemp vulcanising silicone can handle 370deg C and oil but its a bit soft for under the engine unless you run a bash plate

both are very good, make sure to degrease with water based detergent
Thanks from FE350
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April 3rd, 2016, 09:48 PM   #27
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FWIW,

Small oil weep in front of case. Is the case cracked by any chance? Have the case bolts came loose and have you checked torque? Nothing is going to make a case leak other than damage or poor seal so I would look into that. You could drain the oil pour in a solvent and drain. As this is a lower leak at a bottom point, try putting in a sealant as mentioned when dry, then drain and fill with fresh oil and add the sealant additive. This might stop the leak if you can not find the reason for the leak like crack or loose bolts. If you are not wanting to split cases this is an alternative.

I do agree to the tight valves as they might have wear and be to tight.

Hope you find the issues
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April 4th, 2016, 01:27 PM   #28
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any idea what stores sell this product either sikaflex 221 or sealonce
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April 4th, 2016, 09:46 PM   #29
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Amazon will sell it for sure.
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July 28th, 2019, 07:44 AM   #30
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Did you fix your issue?
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