Husaberg 570 head gasket

borsiin · Jul 31, 2015

I have blown my second head gasket in 60h of riding. The usual place next to the water jacket so compression is leaking out when going WOT.

Have been reading about copper gaskets but i cant find someone who still produces them. Anyone knows who stocks them? Or perhaps someone got a CAD drawing so i can cut my own.

spanner · Jul 31, 2015

Ask here if he can do a 570.

COPPER GASKETS UNLIMITED items - Get great deals on HEAD GASKETS, EXHAUST GASKETS AND FLANGES items on eBay Stores!

bushmechanic · Jul 31, 2015

hi borslin

copper is ok in the 570, the other solution tried was to take the OEM MLS gasket apart and spray hylomar between the layers

removing the stay between the head and the frame also helps

if copper doesn't work try copper with a wire ring embedded in the top of the liner, if that doesn't work try a 4mm wide copper fire ring with a wire ring embedded in the liner and use a fibre gasket for the remaining sealing area.

thats what id be doing straight up. see "jbs 700 kit on 80mm crank"

ehsan · Jul 31, 2015

Try SCE Gaskets. I believe they have one for the 570. It's listed as a part for the KTM 520.

disclaimer: I haven't cross-referenced the p/n's so you should do that yourself.

tourist · Aug 1, 2015

Thanks for a good thread already. One mildly off the wall question; I hope it's helpful rather than offtopic: Is it worth it to go to head studs instead of bolts in cases like this? And in general with the 570 for greater peace of mind?

In other words, will head studs alone allow increased clamping pressure and better sealing irrespective of gasket type? Or do they bring only benefits with a gasket with certain properties?

bushmechanic · Aug 2, 2015

more pressure from the bolts almost always helps regardless of gasket type

the composite gaskets I use (copper/fibre) have the best chance of working in a high stress situation

borsiin · Aug 3, 2015

ehsan said:
Try SCE Gaskets. I believe they have one for the 570. It's listed as a part for the KTM 520.

disclaimer: I haven't cross-referenced the p/n's so you should do that yourself.

No luck there unfortunately

borsiin · Aug 3, 2015

bushmechanic said:
hi borslin

copper is ok in the 570, the other solution tried was to take the OEM MLS gasket apart and spray hylomar between the layers

Which hylomar are you using? The only one i have is the universal blue. 1800 km of riding this weekend so a MLS with some hylomar would be the temporary solution

berglsmerg · Aug 3, 2015

Ask cometic about a hybrid fiber gasket with a copper fire ring for a 100mm KTM xc4, it is a custom piece but ive been through the copper/hylomar etc etc routine and nothing compares to the current setup.

bushmechanic · Aug 3, 2015

hylomar gasket jointing compound hyl150

use very very sparingly and drop the oil after first 2-3min warm up as well as cleaning all filter screens its seriously gunky stuff

if the composite ktm gasket bergsmlerg mentions is available get that 150% .. nothing compares to this design

ehsan · Aug 3, 2015

tourist said:
Thanks for a good thread already. One mildly off the wall question; I hope it's helpful rather than offtopic: Is it worth it to go to head studs instead of bolts in cases like this? And in general with the 570 for greater peace of mind?

In other words, will head studs alone allow increased clamping pressure and better sealing irrespective of gasket type? Or do they bring only benefits with a gasket with certain properties?

If you use head studs, I don't think you can get the head off with the motor in the frame.

borsiin · Feb 2, 2016

So i decided to make a custom head gasket. Cometic didnt bother to answer my emails so i tried another manufacturer. Made 2 gaskets with steel fire ring and copper inserts for the water jackets. Pics are coming....

borsiin · Feb 2, 2016

tourist · Feb 2, 2016

Looks pretty! Where'd you get it made?

Rainerio · Feb 2, 2016

Reading this posts. maybe your torque wrench is off? Try another one or have yours check.

TomTom · Feb 2, 2016

FWIW, I had the head gasket blow once on the 570, but I was cheap and reused the old one -> got myself to blaim there.
I use VHT copper gasket cement on the oem gasket and its been good with the CP flat top piston, tq:ed the bolts to 55Nm.
Easy to apply as its like spray paint, then just wait 5mins and assemble, no risk of clogging anything.
Got the tip from MC-Express in sweden that does a lot of Turbo-stuff, bikes and snow sleds.

borsiin · Feb 2, 2016

tourist said:
Looks pretty! Where'd you get it made?

Dutch company that makes a lot of gaskets for oneoffs to their engine tuning industry.

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Husaberg 570 head gasket

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