LT250R - Engine

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cyl head squish??? cyl head squish??? Motoman-Racerx · September 19, 2013, 03:49:17 pm i am starting to get confused here, what should cyl head squish be i just check mine and it is running with factory oem 85 86 he... 52 Replies · 3748 Views Started by Motoman-Racerx « 1 2 3 »	52 Replies 3748 Views	September 30, 2013, 06:46:27 pm by Motoman-Racerx
86 thrust washer question 86 thrust washer question Emann1023 · September 30, 2013, 10:22:07 am can any one pay some pics of the piston thrust washers for an 86 lt250r.I had someone else rebuild the top end on it and it lo... 2 Replies · 439 Views Started by Emann1023	2 Replies 439 Views	September 30, 2013, 11:03:45 am by Emann1023
got a stator/wiring question got a stator/wiring question CornDogg88250R · September 29, 2013, 11:49:45 am out of the stator cover I have a few wires yellow/ red tracer, black with red tracer black with a white tracer solid white and s... 3 Replies · 459 Views Started by CornDogg88250R	3 Replies 459 Views	September 29, 2013, 04:00:32 pm by James Dandy
Engine Building Literature (2-stroke) Engine Building Literature (2-stroke) James Dandy · September 24, 2013, 06:07:49 pm So since I'm getting back into the sport after about 10yrs out of it, I bought a couple LT250r's.Im a 2-stroke guy forever. Wasn... 15 Replies · 1155 Views Started by James Dandy	15 Replies 1155 Views	September 29, 2013, 11:15:13 am by Crash_Lander
88 LT250r Runs, but not well - Multiple Problem Diagnosis 88 LT250r Runs, but not well - Multiple Problem Diagnosis Sdunlimited · September 15, 2013, 01:54:39 pm After installing thrust washers, getting past the broken power valve actuator (see other threads) and pulling 153psi this thing ... 21 Replies · 2291 Views Started by Sdunlimited	21 Replies 2291 Views	September 29, 2013, 06:00:29 am by Sdunlimited
RM bearing/alum washers mod VS Re-pinned YZ piston RM bearing/alum washers mod VS Re-pinned YZ piston James Dandy · September 25, 2013, 08:38:24 pm Just wondering if anyone has tried both. What are the pros and cons? Has anyone weighed the two? If so, which one is lighter? Th... 25 Replies · 1430 Views Started by James Dandy « 1 2 »	25 Replies 1430 Views	September 27, 2013, 09:56:45 pm by Crash_Lander
Engine/ Gearbox vent? What is this Engine/ Gearbox vent? What is this Sparky · September 18, 2013, 05:29:50 am Just got the bike and want to make sure nothing is major wrong. After riding I get oil leaking out of this tube. Is this just a ... 2 Replies · 481 Views Started by Sparky	2 Replies 481 Views	September 27, 2013, 09:46:56 pm by Crash_Lander
I'm looking for someone to... I'm looking for someone to... All American · September 15, 2013, 11:44:27 am Looking for someone to build my 250, ASAP. Parts have been ordered, who can get this in the shop right away and not take 3 month... 29 Replies · 1343 Views Started by All American « 1 2 »	29 Replies 1343 Views	September 27, 2013, 09:45:18 pm by Crash_Lander
I just bought a 88' LT 250R with a blown... I just bought a 88' LT 250R with a blown... All American · September 11, 2013, 11:11:38 pm I just bought an 88' LT 250R for $600. It came with an extra set of rims and 8 paddle-sand shark tires mounted. Head light was i... 49 Replies · 2031 Views Started by All American « 1 2 »	49 Replies 2031 Views	September 26, 2013, 10:46:12 am by All American
Clutch basket removal method Clutch basket removal method AWedel · September 22, 2013, 07:40:12 am Does anyone know of a slick way to remove a clutch basket using hand tools? I'm trying to avoid buying "the tool". 9 Replies · 889 Views Started by AWedel	9 Replies 889 Views	September 23, 2013, 08:30:40 am by Nekrofilliak
Dead end exhaust port? Dead end exhaust port? James Dandy · September 21, 2013, 09:34:36 pm http://i.imgur.com/NCJI3hO.jpgI still can't place images in the right spot, but hopefully you all can see this.What was this por... 9 Replies · 788 Views Started by James Dandy	9 Replies 788 Views	September 22, 2013, 05:57:24 pm by James Dandy
Clutch cover removal Clutch cover removal AWedel · September 21, 2013, 08:25:42 am Any suggestions/tips on how to remove a clutch cover that doesn't want to separate? Yes, all the bolts are out. Thanks. 8 Replies · 1272 Views Started by AWedel	8 Replies 1272 Views	September 22, 2013, 01:14:31 pm by Andys92
86 won't stay running 86 won't stay running CrustyOreo · September 20, 2013, 03:58:56 pm So I tried to take one of my '86s out in the trail today. It stalled and it wouldn't refire unless held WOT. I then noticed the ... 1 Replies · 372 Views Started by CrustyOreo	1 Replies 372 Views	September 21, 2013, 09:57:32 am by CrustyOreo
clutch wont engage clutch wont engage Qracer250alllday · September 19, 2013, 01:42:13 pm Hey guys im having issues with my clutch i took the cover offOver the winter to see how the basket looked and now whenI try to p... 2 Replies · 465 Views Started by Qracer250alllday	2 Replies 465 Views	September 19, 2013, 04:07:38 pm by Qracer250alllday
Flywheel lightening/balancing Flywheel lightening/balancing James Dandy · September 15, 2013, 08:36:12 pm When a stock flywheel is lightened, does it need to be rebalanced? Or if it's done properly on a good mill or lathe, will it nat... 12 Replies · 1309 Views Started by James Dandy	12 Replies 1309 Views	September 17, 2013, 07:20:23 pm by Cunningham_821
Water pump need help please Water pump need help please Rytie77 · September 05, 2013, 04:48:10 pm Ok so here is the deal rebuilt this hole pos quad ground up issuesAfter issues so i put brand new water pump in oil seal water ... 5 Replies · 563 Views Started by Rytie77	5 Replies 563 Views	September 17, 2013, 04:01:32 pm by LT250RWV
Is that a bolt missing in this picture? Is that a bolt missing in this picture? All American · September 12, 2013, 08:38:03 pm On the side of the motor, is a little circular glass window held on by what appears as four bolts, but 1 is missing. Can you fil... 13 Replies · 825 Views Started by All American	13 Replies 825 Views	September 16, 2013, 03:13:43 pm by James Dandy
1987 lt250r gearbox help 1987 lt250r gearbox help Fasty73 · September 16, 2013, 06:20:51 am I'm in Australia and I have an 87 model that I race on flat track, problem is I need new gears for the gearbox. Can anyone PLEAS... 2 Replies · 444 Views Started by Fasty73	2 Replies 444 Views	September 16, 2013, 06:45:42 am by Gillio
Broken Power Valve Actuator Broken Power Valve Actuator Sdunlimited · September 04, 2013, 04:17:28 am So as I'm trying to replace the plastic bushings that hold the arm that controls the Power Valve, I broke the tip off the lower ... 29 Replies · 1689 Views Started by Sdunlimited « 1 2 »	29 Replies 1689 Views	September 15, 2013, 02:21:27 pm by Rider414
Power valve switch on 88' Power valve switch on 88' All American · September 12, 2013, 09:00:10 pm The power valve adjustment switch on the side of the cyclinder will not turn by hand, is this normal? 12 Replies · 712 Views Started by All American	12 Replies 712 Views	September 14, 2013, 10:34:13 am by All American
LT250r Top End Rebuild - Thrust Washers Yes or No? LT250r Top End Rebuild - Thrust Washers Yes or No? Sdunlimited · August 26, 2013, 12:13:51 pm Two of the three LT250r heads I've got kicking around didn't have thrust washers in them. The one that did was locked up but no... 20 Replies · 2039 Views Started by Sdunlimited	20 Replies 2039 Views	September 13, 2013, 08:24:24 pm by Mitch Keller
Squash cut ?'s....I'm installing a new 22cc pro design head on a new.. Squash cut ?'s....I'm installing a new 22cc pro design head on a new.. All American · September 12, 2013, 07:57:11 pm I'm installing a new 22cc pro design head on a cyclinder remanufactured by summit racing. I found them on ebay and sold me a rem... 11 Replies · 734 Views Started by All American	11 Replies 734 Views	September 13, 2013, 11:10:31 am by Nopick
'87 LT250R Help '87 LT250R Help PigBearMan · July 16, 2013, 12:23:34 pm I recently inherited an '87 LT250R from my father, but theres a problem. 10 years or so ago we were in Glamis and my dad was rid... 11 Replies · 1036 Views Started by PigBearMan	11 Replies 1036 Views	September 10, 2013, 09:17:56 pm by James Dandy
New problem New problem ATC Nut · July 18, 2013, 08:34:03 pm Need Help.. rode my lt 250r into my garage ..I havent rode it but a couple of times It seems sluggish. So I went through the car... 11 Replies · 900 Views Started by ATC Nut	11 Replies 900 Views	September 10, 2013, 09:00:46 pm by James Dandy
Idle screw backed out all the way- bike still runs! Idle screw backed out all the way- bike still runs! CrustyOreo · September 04, 2013, 01:54:45 pm I was fiddling with one of my '86s trying to get it to idle correctly and I noticed I backed the idle screw all the way out and ... 8 Replies · 506 Views Started by CrustyOreo	8 Replies 506 Views	September 08, 2013, 08:35:53 am by LT250RWV
rob Madison port work rob Madison port work PCS · August 30, 2013, 01:41:10 am I have a 90 lt250r engine that has a top end with port work done by rob Madison and says 92 Nat under the intake port.my questio... 3 Replies · 534 Views Started by PCS	3 Replies 534 Views	August 31, 2013, 11:42:59 pm by Crash_Lander
So parts required parts list for top end? So parts required parts list for top end? CrustyOreo · August 29, 2013, 06:02:46 pm So what parts am I going to need to put the top end together in my '86 roller? I've got: complete bottom end, jug that is now 72... 1 Replies · 380 Views Started by CrustyOreo	1 Replies 380 Views	August 29, 2013, 10:51:59 pm by 1986QuadRacer
What Size or Dimensions When Building an LT250r Wooden Engine Box? What Size or Dimensions When Building an LT250r Wooden Engine Box? Sdunlimited · August 29, 2013, 07:28:49 pm Does anyone have tried and true dimensions for a wooden 2 x 4 (or other sized pieces of wood) engine box/stand they use while wo... 1 Replies · 395 Views Started by Sdunlimited	1 Replies 395 Views	August 29, 2013, 10:22:03 pm by 1986QuadRacer
LT250r Fine Metal Flakes In Clutch Side - How Bad Is This? LT250r Fine Metal Flakes In Clutch Side - How Bad Is This? Sdunlimited · August 26, 2013, 06:25:50 am Hi Guys,It's been about a year since I've been on the forums asking my noob questions and still attempting to get one good runni... 7 Replies · 673 Views Started by Sdunlimited	7 Replies 673 Views	August 26, 2013, 12:11:40 pm by Sdunlimited
Anyone have a motor done at flotek Anyone have a motor done at flotek Nydamedash · May 15, 2013, 08:59:46 pm Wondering how the guys at flotek are? 25 Replies · 1542 Views Started by Nydamedash « 1 2 »	25 Replies 1542 Views	August 24, 2013, 05:08:13 pm by Crash_Lander
Upgraded ignition coil Upgraded ignition coil Crash_Lander · August 07, 2013, 04:44:43 pm I was looking into the Nology PFC-03s coil. Is there a big need for such a part? Ive read all over and its the typical internet ... 12 Replies · 914 Views Started by Crash_Lander	12 Replies 914 Views	August 24, 2013, 04:05:33 pm by Crash_Lander
87 LT250r For sale 87 LT250r For sale Eloyarencibia73 · August 20, 2013, 07:45:58 pm call me ask Eloy 562-331-1270 needs top end, plastics 0 Replies · 351 Views Started by Eloyarencibia73	0 Replies 351 Views	August 20, 2013, 07:45:58 pm by Eloyarencibia73
PJ38 jetting PJ38 jetting Chuckie25 · August 15, 2013, 06:22:44 pm Where to start? I'm a complete idiot when it comes to jetting,,, i know how to run a plug chop to check main and thats about it,... 12 Replies · 858 Views Started by Chuckie25	12 Replies 858 Views	August 19, 2013, 06:23:03 am by Chuckie25
Lt250r leaking coolant into engine after rebuild Lt250r leaking coolant into engine after rebuild Stuartwhite1989 · July 16, 2013, 11:59:16 pm Hi I'm new to the forum. I have a 1989 lt250r that I brought as a non runner to to bottom end gone for £200. I rebuilt the engin... 12 Replies · 1493 Views Started by Stuartwhite1989	12 Replies 1493 Views	July 25, 2013, 02:02:14 am by Stuartwhite1989
spraying for mosquitoes spraying for mosquitoes Chrisr · June 22, 2013, 01:16:06 pm Fired up the 250 for the first time in a little over a week today. When it busted off it revved up on it's own...........then t... 25 Replies · 2306 Views Started by Chrisr « 1 2 »	25 Replies 2306 Views	July 20, 2013, 04:10:26 pm by Chrisr