Hey guys just wanna try something new, we got a 13 traded in. was thinking about putting the lighter crank in it and what else would you do. think it would work the the slp stage 4 kit?
13 800 with light crank??
- Thread starter 2007dragonman
- Start date
sleds
I was gonna do a big bore then talked to people that have the stage 4 kit and happy with it, so I thought maybee with that crank it would help a lot.
I was gonna do a big bore then talked to people that have the stage 4 kit and happy with it, so I thought maybee with that crank it would help a lot.
C
clamlake600
Well-known member
Those race cranks have a very short life span. I see issues with putting it in the new engine that I hope they figure out before a full production run and use us as test monkeys. Again...
In terms of percentages how much lighter is this crank than the original? For instance a 2lb weight reduction off of a 10lb crank would concern me more than a 2lb reduction off of 20lb crank.
Curious what your basis is for your commentary?
I have heard the opposite, that a few of the race teams have been using them for three seasons with zero issues.
Just curious, and seeking more info. As I'm temped to do a few long rods with the new lighter crank. Due to the faster acceleration and less gyro effect. You should be able to have an 800 or bigger that is light and nimble like a 600 is.
C
clamlake600
Well-known member
they are having issues i'm not at liberty to discuss right now...all i can tell you they are working on it at a fever pitch. they were told to drop everything to look into and fix the issue. dont panic just yet... 
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snopromod
Well-known member
they are having issues i'm not at liberty to discuss right now...all i can tell you they are working on it at a fever pitch. they were told to drop everything to look into and fix the issue. dont panic just yet...
I call BS and think this is just a pot stirring remark... I highly doubt you have any knowledge on this matter.
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clamlake600
Well-known member
I have worked in the motorsports industry for 30 years and own my own shop. Not like that means anything...lol I have my connections..
I have been riding with guys who have the lightweight (H.O.) crank in a 2015 demo RMK Pro 155. The sled rips. It has a stock muffler but it definitely sounds different too. It will definitely pull a comparable sled with the stock crank. I cannot speak to longevity but it runs like a mod sled with the only mod being the crank.
Been hanging out with Chris and Jack again??
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I will put $5k on clam lk being correct on his remarks
The 2014 IQR light weight crank the 2015 800 HO (AXYS) LW crank have different part numbers.... HMMM...
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I built a 13 engine with the light weight crank and a fixit kit on it. After break in I started to push it a little bit...going to need to add a little heavier weights as I was over reving with my 155x3"...did the break in rides in mid April and then have been on the road for work since 
can't wait for next season!
can't wait for next season!
R
rmscustom
Well-known member
Could be just the pump drive gear. I'm assuming the electronic oil pump doesn't need one?
Still have to run the water pump.
Yep... new LW crank still has water pump...
Also... the IQR LW crank is on a sled with NO oil pump whatsoever.... premix.
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Also... the IQR LW crank is on a sled with NO oil pump whatsoever.... premix.
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Maybe different bearings?
I've heard that the IQR PTO bearing is grease lubed??
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I've heard that the IQR PTO bearing is grease lubed??
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