1. 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    TE = 4st Enduro & TC = 4st Cross

Cylinder head repair

Discussion in '4 Stroke' started by sharpie1, Jul 15, 2013.

  1. I wish I knew for sure but most people say getting some dirt in the intake can cause it. In my case, once the intake valve started moving, it was fast, the surface where the valve seals with the seat was wearing and cupped. I didn't do rings or piston, I just cleaned everything up, the piston and cylinder looked new still, if I had more time I might have done more. I removed head without pulling the motor but removed the motor after I shipped my head off. Pulling the motor if pretty simple and gives you a chance to clean and lube things, plus I would not want to put a top end together in the frame.
  2. Coffee CH Owner

    Location:
    Napa CA
    Husqvarna Motorcycle:
    2006 TE250 2013.TR650 Terra
    No kidding! I tried riding with you once!

    Seriously? After 20,000 miles the piston & cylinder still looked new?

    (I am asking for my own selfish reasons, I still have my 2006 TE250)
  3. s.hutchinson84 Husqvarna
    B Class

    Location:
    NSW South Coast, Australia
    Husqvarna Motorcycle:
    2011 TE310
    Great info thanks, yeah I think that I have got dust in the engine at some point, I had the valves adjusted at the shop cause it wouldn't start, lasted 300kms then did the same thing, they have just re shimmed it again, but have told me the next time it happens ill need new inlet valves, I am going to do the job myself as I have access to the tools. Now I just have to find the cheapest place to buy the parts? Is halls the go or is there an aftermarket supplier?
  4. Looked new on the 450 (after tedious cleaning), around 5,000 miles, I've never opened up the 510 in 20,000 miles. Who knows how these things work? Luck? Maintenance? Use?
    OlderHuskyRider and Coffee like this.
  5. Mik-3 Husqvarna
    AA Class

    Location:
    Finland
    Husqvarna Motorcycle:
    Husvarna SM510R 2010
    Yeah that could a bit annoying noise.

    I quess it is Maintenance and use...
  6. Buzuka Husqvarna
    B Class

    Location:
    Russia
    Husqvarna Motorcycle:
    SM510R 2009
    Hello everyone!
    please tell me ... I have a SMR 510 2009 ... I drove 9200km (5750 miles) ... did not participate in the race.
    Should I change the piston, valves, timing chain? as stated in the manual to replace only 10 000km.
    Sorry for the English. I'm from Russia takes Google
  7. flyingbob Husqvarna
    AA Class

    Location:
    USA
    Husqvarna Motorcycle:
    2001 WR360 & 29 memories!
    Other Motorcycles:
    a bunch
    My 08 TE250 and 09 TXC250 were noisy until I put a manual cam chain tensioner in them. Still have the 09 and it is really quiet.
  8. Mik-3 Husqvarna
    AA Class

    Location:
    Finland
    Husqvarna Motorcycle:
    Husvarna SM510R 2010
    My importer say in here hole engine, all bearings, valves, valve springs, piston, piston rings, timing chain, cam chain tensioner,
    cam chain skate, connecting rod bearing. You should check how they look, it depends on what is to be worn
  9. Buzuka Husqvarna
    B Class

    Location:
    Russia
    Husqvarna Motorcycle:
    SM510R 2009
    oh my god!
  10. OlderHuskyRider Husqvarna
    Pro Class

    Location:
    Austin, TX
    Husqvarna Motorcycle:
    2010 TE 450 - last of the ITA motors
    Other Motorcycles:
    Kwaka KLE, HD FXDWG

    My 2010 TE450 has almost 16,000 mile on it, dual-sport miles, runs great, no plans to do any engine work on it.

    [IMG]
    Coffee likes this.
  11. Mik-3 Husqvarna
    AA Class

    Location:
    Finland
    Husqvarna Motorcycle:
    Husvarna SM510R 2010
    yes, it really depends on how it is driven. For me is 12.5 thousand kilometers in street use and is not taken from engine open, everything is as it should be. The only 530cc kit that has been placed in the n.5500km.
    You havety open engine inside whats is worn-out, nut then you can chainge all bearings. Or you can drive, then fix it when go broken or some metal rubbish some out whne you chainge oil???

    But that read in my manualbook 10 000km hole engine built-up+my importer say well, but i quess he say that for reason get some money+thats about is some line Huskys engine.
  12. JMK Husqvarna
    B Class

    Location:
    Sydney, Aus
    Husqvarna Motorcycle:
    TE 511 '11
    Other Motorcycles:
    '99 Ktm EXC 250- the two smoker
    if anyone was wondering, the newer 449/511 platform seems much the same. I've all most 7k on my DS TE511 with all original parts and valves haven't budged at all...

    also, older husky rider, that rally/wind shield fairing you've got is awesome! may i ask where you got it?
    Coffee likes this.
  13. OlderHuskyRider Husqvarna
    Pro Class

    Location:
    Austin, TX
    Husqvarna Motorcycle:
    2010 TE 450 - last of the ITA motors
    Other Motorcycles:
    Kwaka KLE, HD FXDWG
    It's a Lynx by Britannia
    http://www.britanniacomposites.com/index.php/products/lynx16
    JMK likes this.
  14. SMR510 Rider Husqvarna

    Husqvarna Motorcycle:
    2007 SMR 510
    20,000 trouble free miles? Interesting. I bought mine at 10,000 km and it had just gotten a rebuild with new piston and cylinder. Now it's got 17,000 km and it blew a head gasket. I'm pretty annoyed and I was thinking they're crap. I know the first owner was pretty hard on it, but I've been meticulous with the maintenance for the last 7000 km. Always kept the valves adjusted. They got way out of wack when the head gasket blew. The engine kept running for awhile after I adjusted the valves and finally it wouldn't start at all. No oil in the water or vis versa and the cylinder held a leakage test, so it took me awhile to figure out what had happened. I emptied the coolant out and blew air in the cylinder and it came out the side of the block. Bad news.

    Anyway, should I worry about the valves or slap it back together, make sure they're in spec and go for it?
  15. JJrider Husqvarna

    Location:
    Colby Wisconsin
    Husqvarna Motorcycle:
    2008 TE510
    Other Motorcycles:
    '95&'96-KLX650 ,3@ XT600 ,'06 DRZ462
    It's always going to be best to go through the head and have the seats recut and new valves , but I'd inspect them and leak test , then depending how good/bad they really look decide on which route. If the valves aren't coated a quick lapping helps , but don't do it on coated valves or ones that are just hard on the outer couple thousanths.
  16. SMR510 Rider Husqvarna

    Husqvarna Motorcycle:
    2007 SMR 510
    Yes. I tried to pull my head in the bike and the studs extend too far. Won't clear the frame.
  17. OlderHuskyRider Husqvarna
    Pro Class

    Location:
    Austin, TX
    Husqvarna Motorcycle:
    2010 TE 450 - last of the ITA motors
    Other Motorcycles:
    Kwaka KLE, HD FXDWG

    I've pulled my head twice by removing the cylinder studs and pulling those out the top of the head, then, then head just slides off the cylinder.

    [IMG]
    robertaccio and Dirtdame like this.