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compression

  1. Rear shock RD04: Rebuild or cheap aftermarket?

    Africa Twin
    The rear shock on my RD04 is really harsh at holes and bumps, and it goes thru the whole bike. Its feels like the compression damping is too hard. I have tried to adjust it, but I can’t feel any difference. I have 30 mm free sag, and 70 mm rider sag, so the spring should be ok. (from the...
  2. High compression piston for Dominator?

    Dominator / FMX
    I'm hoping to build a special dominator motor with a high compression piston - say 10.5:1 No problem I thought, as Wiseco do them for the XR650L - which is the same as the Dominator right? Does anyone know 100% for sure if this is true of all XR650L motors because the Wiseco catalogue does not...
  3. SLR 650 Starting Problem

    Dominator / FMX
    hi, I've got a problem with my great condition, low milage (11,000) SLR 650 and hope that someone might be able to help. I bought it in August and everything has been working faultlessly until I went to start it last week and it sounded like the battery was going flat which was strange because...
  4. Torque settings for 2002 fx650y

    Dominator / FMX
    does anyone know or tell me where i could find the correct torque settings,the ones i need are as follows,the oil filter housing bolts,sump bung bolts(on frame and at the bottem),rear wheel axle,front wheel station,fork yokes and also the two allen key bolts on the head the ones that would be...
  5. 1972 Honda XL250 Motosport - Kickstarter assembly problem - Need Help! (See Video)

    XL
    Hello, I've recently acquired a 1972 Honda XL250 Motosport and am currently restoring the bike. Before breaking the bike down, I noticed when kick starting the bike that it would make a sound (something like a crude click) and almost feel like it 'gave way' or was 'stripping/slipping' (for lack...
  6. Xrl250 baja decomp stuck?

    XR Technical Specs
    Hi all,I have a xlr250 baja md22. '92. As far as I know, it's quite close to xr250r, so I asking here.I don't like the auto decomp., so cable cutted. The bike stored for a year. With the usual (to me at least ;) start procedure, I push slowly the kick starter, find a compression, release and...
  7. Exhasut makes loud pop/bang after piston change and setting cam timing.

    Mechanical Advice
    Bike wont start! Exhasut makes loud bang after piston change and setting cam timing. I got a stomp juicebox 3 110cc off my friend. He told me he was riding it and the bike slowed down and when he turned it off it wouldn't turn back on. I knew a bit about bikes and after searching forums and...
  8. How Much Cylinder Compression On RD03 ?

    Africa Twin
    Hi all, I want to do a compression test but can’t find the right PSI number for my bike. I have a Haynes Manual and that shows the numbers for the XRV750 and transalp but not the xrv650, I also have a manual for the xrv650 but it says 28 PSI and that’s not right. Can anybody tell me the...
  9. Piston replacement

    Dominator / FMX
    Hi all. Just picked up a FMX 650 that’s had a replacement engine. It came with the old engine that’s got a shagged piston but apart from that it’s in good shape. I’m looking to buy a new piston and rebuild the old engine. My question is can I use the same diameter 100mm piston from the XR650L...
  10. my '95 Dommie clean up!

    Dominator / FMX
    So after a number of months sitting in spare parts in my garage, the ol' Dommie is finally back together! Cleaned her up from the frame up, stuck a Wiseco high compression piston in the motor, fresh tyres, braided front brake line, repainted a few bits such as exhausts, fork top tee, handlebars...
  11. XR250 +4mm piston make??

    XR
    Hello there, I'm a newbie to the site and have an issue with my XR250 (86). After an off on an event last year it lost compression when kicking it over. If I bumped it off it ran perfectly with no loss of power but no compression. I checked the de-compressor and the valve clearances and all ok...
  12. Replacement engine Transalp '87, which fits?

    Transalp
    I bought a '87 Transalp and is possibly needs another engine (front cilinder has 0 compression and is 'rattling'). I'm gonna pull the engine out anyway to check out the condition, but I'm not too positive. This Transalp has the black engine, do the newer gray engines also fit?
  13. 1996 XR250s Compression Test

    XR
    Hello All! So I've bought myself a compression tester and I am about to attempt doing a cylinder compression test for the first time. I've been looking on here at a number of posts trying to get an idea of what kind of numbers I should be looking at getting. I have an XR250s Baja which is a...
  14. Found at Beaulieu- Honda C200

    Other Honda
    Went to the Netley and Beaulieu jumbles this weekend and came back with this- A Honda 1965 C200 Touring (90cc ohv), able to bring it home inside the car! Looks as though a previous owner had some tins of desert camouflage paint- a Suez crisis dispatch rider bike? Seems mostly there or in the...
  15. Honda fx650 start up problems

    Dominator / FMX
    Hi. I bought a 2002 Honda fx650 vigor. The piston was knackered. So I got a new barrel and piston (2nd hand) and removed all the old piston from the engine. It has 75-80psi on compression. And the valves have been set to 10mm? What ever it is in the Haynes manual. It semi fires. Goes to around...
  16. AT burning oil and white smoke - need help plz

    Africa Twin
    Hi AT friends, need some expert advise as I'm a shitty mechanic myself :) After more than 60.000 km my RD07 from 1996 has made it from Denmark to Bali on my way to Australia. It has gone a bit more than 100.000 km in total, and is not running well now. It is burning a lot of oil (need to top...
  17. Carb Compression spring

    Dominator / FMX
    Rebuilding the carb on FX650 - first time off the bike. Needed to as a crack in air filter body had let dirt into the carb. Have question about Vacuum Chamber compression spring It came out with the tight coil springs closest to the carb body (ie DOWN) All the parts fiche and manual images show...
  18. For Sale: Xl1000v white power rear shock

    For Sale / Wanted
    For sale a white power shock shock for an xl1000v of any year. The shock has remote preload adjustment, adjustable length and compression and rebound has a 175 - 185 spring currently fitted. Has been in my cupboard for a few years since I sold my first varadero, so would benefit from a...
  19. new owner question

    XR
    hi guys,i recently purchased an xr400 that had been sat a few months with the top end off having just had the rings replaced and not put back together.i have built it backup and its low down on compression.my question is can someone explain how the auto decompression system works. I can see how...
  20. xr400 Sounds nasty

    XR
    On my way home today from a ride out got through my gates when the bike cut out , i kicked it over but it lacked compression , when it did fire up there was a loud rattling and the engine timing was out , i.e. missing, i'm guessing somethings knackered , any ideas ???
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