someone has a workshop manual??? I want to know correct clearance for the rings the old one ha 0.42mm the new one 0.27...
Last edited:
husaberg fs 570 "project"
- Thread starter HusaBELGfs570
- Start date
Joined Nov 2012
2K Posts | 821+
Iceland
Here's the '09 70-degree service manual: http://husaberg.org/service-manuals/17514-2009-husaberg-fe-450-570-repair-manual.html
We haven't been able to get our hands on a digital copy of a more recent manual
We haven't been able to get our hands on a digital copy of a more recent manual
Look at the gaps on the rings it's very tight getting the piston in....
This is what I found in the manual but that says max clearance couldn't find minimum clearance and my dealer had no idea to but he hought it would be to tight...
Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
G'day Page 121
Yes nice and tight.
Fwiw I filed my rings back to. 015" or. 381mm (CP piston)
If you have a group 2 piston, then the bore needs enlarging to suit. The end gap is specced to balance sealing and growth of the rings due to thermal expansion. Not enough and the ends will butt up and pinch off. Too much and you'll have excessive blowby.
Less than or equal to is a bit vague.
If your piston to bore clearance is within the specs above then the end gaps should be correct.
Yes nice and tight.
Fwiw I filed my rings back to. 015" or. 381mm (CP piston)
If you have a group 2 piston, then the bore needs enlarging to suit. The end gap is specced to balance sealing and growth of the rings due to thermal expansion. Not enough and the ends will butt up and pinch off. Too much and you'll have excessive blowby.
Less than or equal to is a bit vague.
If your piston to bore clearance is within the specs above then the end gaps should be correct.
Last edited:
I think ordering rings from group one will be best the old compression ring only has 0,27 clearance in the liner.
Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
When i fit new piston in liner without rings i have about 0,06 clearance between piston and cilinder 0.05 feels pretty loose the old one is around 0.08
I got the compression ring of the old piston without problems but it took a lot of effort getting the comp ring of the new piston so I used the screwdriver and broke it I suck should have brought the entire bike to te shop lol
I got the compression ring of the old piston without problems but it took a lot of effort getting the comp ring of the new piston so I used the screwdriver and broke it I suck should have brought the entire bike to te shop lol
Last edited:
Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
A few pages back there were some good suggestions for other piston makes that weigh less. If its a cp you're after then go direct to the source.
Yes it's group 2 when I put in one 0.04mm gage in one end where the skirt of the piston is it's very tight /impossible to get 0.05mm in the other side
When I put the gages on the sides where there is no skirt material I get 0.06 in easily
Last edited:
Thumper racing is in holiday till monday next week...
I also got no reply from them the last days when I was asking them my order status and if the payment was ok...
But my carillo rod order is processed
About pistons check page 19 in this thread maybe if I wasn't so impatient I would have ordered a wossner piston instead less than 200€ for e great quality piston there are even cheaper options but in the long run it's better to pay for a better piston IMO
Last edited:
Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
Joined Nov 2012
2K Posts | 821+
Iceland
Are measurements of a unused Cometic head gasket enough?
How accurate do you want? I don't really know how to practically measure, as in from where to where and what would be the pitfalls? Guidance gratefully accepted
I was thinking I could scan it in and afterwards measure the physical gasket with calipers - semi-crappy mechanical calipers is all I have - from each bolt hole to the others? Trying to keep it as flat as possible during.
I can probably borrow better measurement gear or toss the gasket to someone to have it measured.
Probably HusaBELGfs570 is in a better position to measure but I'll for sure do anything that's useful.
I can measure the head if yo want but It will not be acurate to 0.1 mm
I do'nt have the tools but I can give you the dimesions form hole center to hole center in mm if that is accurate enoegh
have to find a place to measure my cilinder my dealer can't do it
I do'nt have the tools but I can give you the dimesions form hole center to hole center in mm if that is accurate enoegh
have to find a place to measure my cilinder my dealer can't do it
Joined Sep 2007
782 Posts | 291+
???
Thanks gentlemen
I want to know if it is the same pitching as the earlier Berg`s a ruler would
do just need to measure from the edge of the hole to the edge of the next hole
on the gasket would be good.
The holes on the earlier Berg`s are in a rectangle rather than an exact square.
Here is the 628 gasket,
98mm
88mm
I want to know if it is the same pitching as the earlier Berg`s a ruler would
do just need to measure from the edge of the hole to the edge of the next hole
on the gasket would be good.
The holes on the earlier Berg`s are in a rectangle rather than an exact square.
Here is the 628 gasket,
98mm
88mm
Last edited:
Similar threads
Register CTA
Register on Husaberg Forum! This sidebar will go away, and you will see fewer ads.
Sign Up
