Added reply in a thread 2005 yz125 fire 2/13/2021 11:35 AM

Were you able to discover the reason behind the fire so it doesn't happen again? I suspect the only thing hot enough to ignite gas vapor would be the exh pipe at full throttle so the temps are high.

Added reply in a thread **WTB** 16-21 KTM/Husqvarna OEM Wheel Set 1/31/2021 2:01 PM

Shaun, can you e-mail me pics and price for the wheels as well? Jbonemotorworks@yahoo.com thnx-

Added reply in a thread KTM 450 SXF engine noise linked to clutch engagement (with video) 1/16/2021 11:55 AM

It sounds better than my 20' Rockstar with 40 hours on it lol.

Added reply in a thread KTM SX 50 MINI - Restrict 12/30/2020 3:06 AM

If you can't get one due to the holidays, take the exh pipe off and take it to the local hardware store and find a flat washer that fits inside the exh pipe and bolt it back up. Your PW50 has that same thing in it now unless you removed it already, it ... more »

Added reply in a thread Yz250 Head Pitting 12/23/2020 12:54 PM

"A more simple way to explain it, basically when the compression requirements exceed the octane of the fuel you are using, the heat of the compression alone becomes enough to ignite the fuel instead of the spark plug causing ignition." I used to think ... more »

Added reply in a thread Yz250 Head Pitting 12/23/2020 6:14 AM

Thanks lol

Added reply in a thread Yz250 Head Pitting 12/23/2020 2:53 AM

In layman's terms, it is the un-controlled combustion of gases in the chamber at the wrong "time" in the engine cycle which causes engine damage including head pitting, piston crown deterioration, spark plug melting, etc... If heard, (sometimes it is ... more »

Added reply in a thread Powervalve damage repair 2-stroke? 12/22/2020 11:57 AM

easy replace, make sure you send the new one in with the bushings so whoever welds and repairs can clearance it and make sure it doesn't get hung up when flipping open or closed. Powerseal USA in PA can get that fixed np at all- J

Added reply in a thread Yz250 Head Pitting 12/22/2020 11:12 AM

hahah

Added reply in a thread Yz250 Head Pitting 12/22/2020 8:50 AM

FWYT- "What is meant by "the YZ250 has (2) compression ratio's"? PV closed, PV open. Mr. Robinson-"I think what Jbone meant with the "2 compression ratio" comment was based on the open and closed power valves. You have a higher ratio with the power valve ... more »

Added reply in a thread Yz250 Head Pitting 12/21/2020 2:42 AM

looks a hair lean..the outer edges of the squish band show signs of detonation..the wash looks OK. I would have advised you to do a compression test before you pulled the head to see where your PSI is as well as a squish test to see how much space you ... more »

Added reply in a thread Is this much movement normal for a connecting rod? YZ250 12/20/2020 4:41 AM

I have not used Royals, only ever used Pro-X. If you do get the crank rebuilt, have the crank builder hog out a little of the plastic stuffers around the inside edges of the crank halves where the rod slides so more oil makes it's way in there. Regarding ... more »

Started new thread SRT Offroad wheels 12/18/2020 4:15 AM

Anyone ever use them? Do they hold up ok? Quality?

This forum thread has 3 replies

Added reply in a thread Best exhaust for 2020 KTM250f 12/18/2020 4:05 AM

We have used the fmf slip on at first, the 4.1, then we added on the power bomb header and it made it better as well. If you are looking for weight savings, the Ti system is great and saves a few pounds but gets pricey...I would also research dyno sheets ... more »

Added reply in a thread Yz125 Cylinder Sleeve 12/15/2020 4:47 PM

Powerseal USA in PA can weld, profile, re-plate it, they can also add a better relief around the exh port and bridge. I sent them some cylinders over the years that I was like NO WAY they can fix but they did. DO NOT use a sleeve in your YZ125...many ... more »

Added reply in a thread 2021 ktm 250sxf not starting 12/15/2020 4:35 PM

are there any flash codes coming off the EFI light?

Added reply in a thread Technical Touch WP to KYB inserts 12/14/2020 2:47 PM

Thanks for your insight slipdog. I reviewed your posts, you sure know your stuff. Thanks!

Added reply in a thread Technical Touch WP to KYB inserts 12/14/2020 6:19 AM

Ok, sweet, thanks so much.

Added reply in a thread Japanese Kawasaki sr125 12/14/2020 6:17 AM

sandman768 I truly hate you lol

Added reply in a thread Technical Touch WP to KYB inserts 12/13/2020 12:24 PM

Thanks very much for your replies!