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Time to go Lectron on my YZ295. Need info....

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I've decided it's time to pull the trigger on one of these bad boys.  I'm ready for some hassle free and smooth carburetion.  Should I go with a 36mm or a 38mm for my YZ295 woods bike?  What all accessories should I ask for?  Is this truely a set it and forget it carb?

 

Any helpful info is appreciated!!

 

 

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I went with the 38mm on my mainly stock 250 (Platinum 2 pipe and Q-Stealth silencer only) and it works great.

 

Make sure you get the Lectron throttle cable if you have bar risers as the stocker is too short. Well... It's a good length until you turn right. :)

 

It is not a set and forget unit, but once you do get it jetted it's is very forgiving with altutide and temperature changes. I've been from 1500' to 6500' with no need to re-jet and yesterday we went from 28C down to 4C in one day and it was still running well. A touch on the lean side, but nothing dangerous.

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I suggest contacting Kelly at Motosportz.com - he's done more work developing these things than anyone and will make sure you get the right one and the right pieces you need.

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contact Kelly via email at motosportz@gmail.com

he knows these carbs better than anyone and will make sure you get what you need and everything you want.

Edited by xxxbranham

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On your 295 what porting did you get? If mid/top - go 38. If low/mid - go 36.

The 38 shouldn't take away bottom but should give more on top. The 36 shouldn't take away from top but should give more top. Your decision.

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So are you still looking to trade that bike or decided to keep it?  

 

You must be local!!  After much thought I've decided to keep it, it's just too bad ass of a bike. 

 

 

 

On your 295 what porting did you get? If mid/top - go 38. If low/mid - go 36.

The 38 shouldn't take away bottom but should give more on top. The 36 shouldn't take away from top but should give more top. Your decision.

 

 

I've got the low/mid port.  I was thinking 36 as well it keep good intake velocity at low rpm.

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36 would be to small in my mind, 

 

a 38 comes stock on a 125, a 38 on a 250 2 strokes see gains on the top end with a taper bore to 39-40 with zero effect on bottom end. You are on a 300. 

 

125s have 38s

250s have 38 and benefit from a bigger bore

heck my summit 800 uses two 40mm carbs, one per 400 cc and i saw pretty good gains when i had them bored to 42mm.

 

 

The lectron is supposed tobe magic on the lowend, even at 38mm on a stock bore everyone reports amazing bottom end power and tractability. You are rocking a 300. I don't think its needed to make your bike inhale through a straw.

 

go 38

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36 would be to small in my mind, 

 

a 38 comes stock on a 125, a 38 on a 250 2 strokes see gains on the top end with a taper bore to 39-40 with zero effect on bottom end. You are on a 300. 

 

125s have 38s

250s have 38 and benefit from a bigger bore

heck my summit 800 uses two 40mm carbs, one per 400 cc and i saw pretty good gains when i had them bored to 42mm.

 

 

The lectron is supposed tobe magic on the lowend, even at 38mm on a stock bore everyone reports amazing bottom end power and tractability. You are rocking a 300. I don't think its needed to make your bike inhale through a straw.

 

go 38

 

Smaller carbs emphasize low end. A 38 is used to tune top end as in racing XC or MX racing. If you only ride tight woods you don't even need an expansion chamber (like a trials bike). If he only wanted torque and chug then the 36 is a better choice. He said he rode woods. 

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IMO unless you can honestly say you rarely ever ever ever go above say 50% throttle I would think the 38 is a better option. The 38 should still have a clean bottom but will allow you to ring it out more which is when the smile is really put on your face. More fun IMO if the terrain you're riding allows that

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Why 38?  Would that take away from bottom end?

smaller carb = more air flow down low = more bottem end. bigger carbs is for more top end.

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I bet you'd be hard pressed to tell a difference with the Lectron between the 36 and 38 on a 295.   I may be beating a dead horse but Motosportz is a Husky specialist so has lots of experience with the Lectron on 300 2 strokes - I'd follow their advice.   Guys who've installed the 36 report a surprising amount of top end power and guys who've installed the 38 report a surprising amount of low end.   I'll be ordering one for my 'beater' 250 when Kelly gets back after the weekend.  I sent him an email last week and he responded immediately with questions regarding what I was riding - where - and what I wanted to accomplish ..... info he wanted to make sure I get exactly what I need.

Edited by xxxbranham

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I'm going to throw in some speculation, and some people might think this is ridiculous but hear me out ... At low altitude, with very good tune state, good fuel, oil and any respectable pipe, I would expect that the low-mid EG porting could/should have too much punch off the bottom for trail riding. That's if you're doing single trail with a stock clutch. Small amounts of throttle opening should have the motor instantly pulling so hard, that you're slipping the clutch to settle it down.

 

In which case I'd not be choosing a carb size to try and boost bottom end punch. It wont need it.

 

Also with a low/mid port, I'd guess that the 38 wont make any difference over a 36. The low/mid just wont have enough port/time duration to pull any more air in than a 36 can provide.

 

I'd go as far as saying that unless you ride trails at high altitude, or have to deal with crap fuel and a low compression ratio, the mo betta porting is the go.  With good tune setup, and good fuel, mo betta rips from bottom to top.

 

I have the mo betta EG 295 porting, with a PWK 38 carb well jetted and a #8 slide, and with the Fatty pipe, in single trail, it's way too aggressive off the bottom for me.  I think my bike handles well, and my pace is intermediate.

 

The first day I rode the 295 I was thinking how glad I was that I didn't get the low/mid port. Because the bottom pull is plenty and the top end is still a blast. I recently install the Platinum 2 pipe, and that tamed the motor down a lot, at any RPM range. With the Fatty is is a lot of fun, but for me I was slower and had to concentrate twice as hard.

Edited by numroe
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I would say the low/mid porting may be a little much in some situations, but it's not as explosive off the bottom as you might think.  Although this might be due to the fact that I've got the timing bumped back, a Rekluse, and the stock pipe.  I certainly don't want MORE bottom end though.  As a matter of fact I wouldn't mind squeezing a little more top end out of it, so I think a 38mm would be what I'm looking for. 

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zip ty racing used the stock 38 pwk on stock bore yz250s racing offroad in the gnarliest conditions where lowend power was essential. So 38 on a 295 would be the cats meow

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