Recent Activity
All
Perky Liked a comment about bike check 1988 Ktm 500MX.
9/4/2024 7:20am
Great inspiration! If you have any info for suppliers/vendors for parts please DM me. I’m rebuilding an ‘86 500MXC (trail variant.)
This bike check has 2 comments.
jdx740 Added a reply to 1986 MX 250 KTM
8/27/2024 12:37pm Looking good there
wpark89 Liked a reply to forum topic 1986 MX 250 KTM
8/27/2024 12:37pm
You can get all the 84-97 KTM manuals (parts, repair, owners) on an Australian site. Do a search for “Bolton KTM manuals 84) and you should be able to find them all. Just finished a 86 80 this fall
This forum topic has 27 replies.
cwtoyota Liked a reply to forum topic 1990 KX500 Classic Looks & Modern Handling ?
8/24/2024 4:29pm
These are pretty recent.
This forum topic has 55 replies.
cwtoyota Liked a reply to forum topic 1990 KX500 Classic Looks & Modern Handling ?
8/24/2024 4:27pm
With the engine assembled, I went back to work on the last details of the chassis and bolting everything together. Sorry in advance for some blurry photos. I just take some photos with my phone as a quick way of taking notes and sometimes I don't check if they're crisp and bright. 
I also applied some paint stripper to a pristine OE exhaust pipe that I bought a year or so ago. It was dent free, but it had a few hours and the stock gray coating was scratched up pretty bad along the bottom. 
I cleaned...
I also applied some paint stripper to a pristine OE exhaust pipe that I bought a year or so ago. It was dent free, but it had a few hours and the stock gray coating was scratched up pretty bad along the bottom. I cleaned...
This forum topic has 55 replies.
cwtoyota Liked a forum topic 1990 KX500 Classic Looks & Modern Handling ?
8/24/2024 4:23pm
I picked up this 1990 KX500 in September of 2019. It shifted like a new bike, the frame, cases, etc were all 100% intact and it ran like it was full of diesel fuel instead of gasoline. 
When i brought the bike home I welded up all the cracks in the pipe, tie-wired the busted exhaust mounts and dug into the carburetor. There was no main jet in the bike. I popped in some leaner jetting and some fresh race fuel and went out on my little track to feel out the bike. The 41mm forks with 0.39kg/mm spring...
When i brought the bike home I welded up all the cracks in the pipe, tie-wired the busted exhaust mounts and dug into the carburetor. There was no main jet in the bike. I popped in some leaner jetting and some fresh race fuel and went out on my little track to feel out the bike. The 41mm forks with 0.39kg/mm spring...
This forum topic has 55 replies.
KTM Two Stroke Liked a reply to forum topic 1987 KTM MX 540/550 Big Bore Rebuild
8/22/2024 11:44pm
Out of that Parts i make one 500 over the Summer, Bike is Running but with very low compression and less Power. That 500 Engine ned a lot of Work with Cylinder Sleeve, Crank Rebuild, Clutch Basket is shot…… So for the Moment i decided to leave the 500 like it is an Start a 540/550 Projekt Out of these Engine there is one very nice 1987 540/550 Engine in an excellenct Condition, according to previous Owner this was a spare Engine from a Dutch Sidecar Team sittting in a Garage unused for over 30 Years Startet with Engine Work...
This forum topic has 31 replies.
shigs58 Liked a bike check 1980 Husqvarna CR390 - Resto-Racer
8/22/2024 10:47pm
This bike check has 2 comments.
KTM Two Stroke Liked a reply to forum topic 1987 KTM MX 540/550 Big Bore Rebuild
8/22/2024 9:54pm
It’s hard to say how much HP this 540/550 KTM make , there are almost no Information to find about these Bikes . The old Short Stroke 500 (85-88) make 62 HP the newer 500 (89-95) make 65 HP That 550 has a portet Cylinder, Boyesen Rad Valve , JSV Pipe and the 41 Keihin, maybe it came close to 70 HP, but yes a Dyno run would be interesting
This forum topic has 31 replies.
jdx740 Added a reply to 1987 KTM MX 540/550 Big Bore Rebuild
8/22/2024 7:40am I always wonderd how much rwhp these ktm's pull are u gonna do a dyno run?
KTM Two Stroke Liked a reply to forum topic 1987 KTM MX 540/550 Big Bore Rebuild
8/22/2024 7:39am
Some more Pictures from the Engine, for Comparison a 550-500-300 KTM Piston Carburator is a Keihin PWK 41 Pro On the Pictures the Custom Made Samarin Conrod from Spain These Parts (Piston-Conrod - Zylinder)are the only difference from 550-500 and 350 KTM, the rest Gear Box , Engine Cases , Clutch is almost the same on the 565 and 555 so it’s possible to interchange many parts on These 565 and 555 Engines
This forum topic has 31 replies.