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Old 10-02-2013, 01:20 PM   #8521
Earthscape
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Joined: Mar 2006
Location: Western Mass
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Quote:
Originally Posted by Ranger Ron View Post
That may be a record.

Ron
Not quite, mine at 7XX miles. #11 cylinder. But that may not even be the record around here...

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2004 KTM 950 ADV : : : : : : : 1998 Triumph Tiger
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Old 10-02-2013, 01:24 PM   #8522
sweetwater
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All this talk about 350 kits is killin' me!!! I wanna test ride one
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Old 10-02-2013, 04:40 PM   #8523
jules083
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Quote:
Originally Posted by sweetwater View Post
All this talk about 350 kits is killin' me!!! I wanna test ride one
I know. I don't need it, my 250 runs fine, but I still want it.

It would also be nice to be able to go up a tooth on the front for commuting or if I took a more street type trip. 7 grand gets old on the highways.

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Old 10-02-2013, 05:23 PM   #8524
1994klr250
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I just finished installing the Bill Blue 351 kit and a kick starter on my 2006 that I picked up back in June. The bike only has 1,096 miles on it. The 351 kit is well worth doing. Here's some of the pictures of the install.



Bill even stamps in 351 for the new cc displacement. This is cylinder #340.



250 vs 351







Kick starter installed. I have it figured out to get it starting with one kick when hot with the new 351 kit. I installed both at the same time so I don't have a comparison to how it would work with the 250. I haven't been able to get it to start cold yet with the kick starter. I'll probably have to do the KACR mod to the exhaust cam in the future.



It's slowly turning into the bike I want to replace my 94 KLR 250 with. Next up will be the Acerbis 3.7 gallon tank and a skid plate. On a side note tomorrow my KLR 250 will turn 40 as in 40,000 miles!
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2300 miles on a 250 all for a sticker http://www.advrider.com/forums/showthread.php?t=616239
Fall ride on a KLR250 http://www.advrider.com/forums/showthread.php?t=754065

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Old 10-02-2013, 05:23 PM   #8525
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Displacement

Displacement
I'm stuck at 2fiddy until I get through the kick start install...
And with the upcoming winter...in the fire wood or bike argument, wood wins for now. I've got to keep the shop, with the bike in it, warm.
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Old 10-02-2013, 06:02 PM   #8526
sweetwater
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OK, so if a KLX250 "needs" the 351 kit, what is estimated total cost. I'm talking about every possible thing an owner needs to buy to finish the job. Obviously the 351 kit itself, but what else???

I only ask because I'm cynical and most hot rod projects require lots of little details that aren't originally realized. Lemme have it guys, the cold hard truth of the 351 kit...
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Old 10-02-2013, 06:33 PM   #8527
1994klr250
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Quote:
Originally Posted by sweetwater View Post
OK, so if a KLX250 "needs" the 351 kit, what is estimated total cost. I'm talking about every possible thing an owner needs to buy to finish the job. Obviously the 351 kit itself, but what else???

I only ask because I'm cynical and most hot rod projects require lots of little details that aren't originally realized. Lemme have it guys, the cold hard truth of the 351 kit...
I wouldn't say the KLX250 needs the 351 kit but it really helps this bike come alive. I've only put about 200 miles on my klx in stock form and I couldn't stand how choked up it was. I first re-jetted and put on a fmf full exhaust. That helped a great deal. I could of lived with it like that but I bought this bike to replace my 94 KLR 250 which has been 250 cc's for the 36,000 miles I've ridden it. I never put a big bore kit on the KLR because anything more than 280 cc requires machine work to the cases. It wasn't worth it to me. I've only done carb and exhaust work to it. Which helped the KLR breathe and pull the upper rpms with ease.

When doing research on the KLX 250 and finding out that a 351cc cylinder is a bolt on deal I jumped all over this bike when I bought it totally stock. The factory chokes these bikes to meet emissions and noise restrictions, which in my opinion makes them slow and a bit boring. Some people are quite happy with them in stock configuration.

The 351 kit that you get from Bill Blue is a straight forward install. The only thing you need to get separate is oil and coolant to replace the fluids. I just did this job over the weekend. I did both the kick starter and 351 in the same day, it was an all day project. If you haven't done any modifications to the bike as in exhaust or carburetor re-jetting you won't get the full benefits the 351 kit offers. So that could be an added expense. I had already done both before the 351 install. After riding the bike as a 250 vs 351 I am very happy with the results. I am glad I did the swap. If your happy with the 250 keep on riding! Fred.
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2300 miles on a 250 all for a sticker http://www.advrider.com/forums/showthread.php?t=616239
Fall ride on a KLR250 http://www.advrider.com/forums/showthread.php?t=754065

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Old 10-03-2013, 06:27 AM   #8528
mikesova
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Quote:
Originally Posted by 1994klr250 View Post
I wouldn't say the KLX250 needs the 351 kit but it really helps this bike come alive. I've only put about 200 miles on my klx in stock form and I couldn't stand how choked up it was. I first re-jetted and put on a fmf full exhaust. That helped a great deal. I could of lived with it like that but I bought this bike to replace my 94 KLR 250 which has been 250 cc's for the 36,000 miles I've ridden it. I never put a big bore kit on the KLR because anything more than 280 cc requires machine work to the cases. It wasn't worth it to me. I've only done carb and exhaust work to it. Which helped the KLR breathe and pull the upper rpms with ease.

When doing research on the KLX 250 and finding out that a 351cc cylinder is a bolt on deal I jumped all over this bike when I bought it totally stock. The factory chokes these bikes to meet emissions and noise restrictions, which in my opinion makes them slow and a bit boring. Some people are quite happy with them in stock configuration.

The 351 kit that you get from Bill Blue is a straight forward install. The only thing you need to get separate is oil and coolant to replace the fluids. I just did this job over the weekend. I did both the kick starter and 351 in the same day, it was an all day project. If you haven't done any modifications to the bike as in exhaust or carburetor re-jetting you won't get the full benefits the 351 kit offers. So that could be an added expense. I had already done both before the 351 install. After riding the bike as a 250 vs 351 I am very happy with the results. I am glad I did the swap. If your happy with the 250 keep on riding! Fred.
Hey Fred, nice bike.
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Old 10-03-2013, 07:11 AM   #8529
Rob.G
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I would never want to ride another stock KLX now that I have the 351 in mine. For the first time, it actually has TORQUE.

Now, as far as what you NEED to finish it? If budget's a huge issue and the bike has low miles, just the 351 kit. If it has miles on it, do a clutch too (EBC Dirt Racer). Otherwise you're good. If you want MORE, then plan to do the ported head too, which will run another $600-700. I'm gonna try to do this over the winter if I have the money. I want a snowmobile more, so we'll see. :)

Rob
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Old 10-03-2013, 10:07 AM   #8530
mikesova
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Fred,


What jets did you end up using for the re-jet? I figure with us both being in Michigan our elevation is pretty similar. I've been interested in re-jetting, but I don't want to buy the whole kit. If you could let me know what jets you ended up with, I could just get those ones and see how it goes. My bike is bone stock.

Mike
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Old 10-03-2013, 10:09 AM   #8531
sweetwater
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A 351 kit is not in my immediate future, but it is getting great reviews from everyone and it seems like an economical project. My one hang up is going to the louder exhaust...

I really like riding around in ninja mode and I work some funny hours, so early mornings and late night rides are always possible; I like my neighbors, so quiet is nice.

In summary, it looks like a good, basic set up is 351 kit and FMF system along with proper jetting/carb tune. If I decide to pull the trigger next season I might just do it all at once. THat would result in very noticeable gains.
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Old 10-03-2013, 10:35 AM   #8532
Rob.G
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Quote:
Originally Posted by mikesova View Post
Fred,


What jets did you end up using for the re-jet? I figure with us both being in Michigan our elevation is pretty similar. I've been interested in re-jetting, but I don't want to buy the whole kit. If you could let me know what jets you ended up with, I could just get those ones and see how it goes. My bike is bone stock.

Mike
But you won't get the needle that goes with it. IMO the jet kit is well worth the $50, and there's no absolute guarantee that the jet he chose will be the ideal jet for you even being in the same location. Some carbs and motors have tolerances just different enough to need different settings.

Rob
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Old 10-03-2013, 11:26 AM   #8533
sweetwater
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Rob is spot on.

Buying parts from Mama Kawi will set you back $40 or so.

DJ kit- very nice BTW- includes better needle and spring, assorted jets, and phone tech. I paid $43 and some change (included shipping!) from Amazon dealer (Powersports Superstore?). Product was shipped quickly, was perfectly new, and worked like a charm. I also had an opportunity to call DJ tech about some elevation issues and they were great on the phone.
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Old 10-03-2013, 05:25 PM   #8534
1994klr250
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Quote:
Originally Posted by mikesova View Post
Fred,


What jets did you end up using for the re-jet? I figure with us both being in Michigan our elevation is pretty similar. I've been interested in re-jetting, but I don't want to buy the whole kit. If you could let me know what jets you ended up with, I could just get those ones and see how it goes. My bike is bone stock.

Mike
Glad you like the bike, its still a work in progress. The jets I'm using right now are Keihin jets for the CVK34. I ordered a bunch when I re-jetted the carb on the KLR250 a few years ago. I used the extra ones that I had on the KLX250 since they both use the CVK34. Currently in the KLX the main is a 130, pilot 38 and 2 1/2 turns out on the idle mixture screw. I also removed the snorkel from the air box cover. When I bought the bike it was hard to start, the factory idle mixture screw was set at about 1 turn out. I ordered a dyno jet kit, haven't installed it yet. I'll play around with the jetting after I get the 351 kit broken in. It's running good on the current set up so far. Just a FYI the Keihin and Dynojet jets use different numbers for their jets, so a 130 main jet is not the same for both brands. There are some charts floating around somewhere that I saw that show the equivalent jet sizing between the two. I ordered my Keihin jets from jetsrus.com. When I get the dynojet needle and jets installed I'll post back, Fred.
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2300 miles on a 250 all for a sticker http://www.advrider.com/forums/showthread.php?t=616239
Fall ride on a KLR250 http://www.advrider.com/forums/showthread.php?t=754065

1994 KLR250, 2009 F800GS, 2006 KLX351
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Old 10-03-2013, 07:17 PM   #8535
mikesova
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oh fine, I won't be a cheapskate. :)
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