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Lt80 Hard To Start

  #41  
Old 10-03-2018, 11:22 AM
DirtDevil101's Avatar
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Nope...should be fine...break-in may be longer due to the synthetic...but rings will seat eventually...I think LT80 recommends 36:1...maybe go a bit more like 34:1 for 1st tank...I use iridium plugs as they just don't foul very easy...just remember you'll be running a tad lean at a higher pre-mix ratio...so don't keep it WOT for any long stretches...especially if you brought the main down from 92.5 to 90...
 
  #42  
Old 10-03-2018, 11:51 AM
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Join Date: Jun 2012
Location: Colorado
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Great, thanks again Dirtdrvil, I'll keep that in mind, I appreciate the time and support.
 
  #43  
Old 10-03-2018, 05:20 PM
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I run 32:1 always. With a good synthetic oil. Torco GP-7 is the best for me.
Most Amsoils are like 50:1
 
  #44  
Old 10-18-2018, 06:32 PM
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Join Date: Jun 2012
Location: Colorado
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Hello LT80, I sent you a pm.
 
  #45  
Old 11-11-2018, 11:32 AM
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Had to order bearing from dealer, bought rest from mr lt80. With all parts in hand assembly went smooth. With freshly cleaned carb, air filter and fuel, atv fired right up and sounds better then ever. With rear blocked up ran atv at diff Rpms until warmed up. Let cool and ran again. Grand kids love having atv back and riding in snow is their fav thing. Thx to all for the support, this forum is awesome. The attached is a picture of happy grandkids 😀
 
  #46  
Old 01-05-2019, 10:29 PM
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Location: Colorado
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Hello all, bummer the pic didn't work, but glad to report the lt80 is still running Great after 2 months and several hours riding. I thank this forum for the support and advise. Dirt devil, LT80, the kids say THANKS.
 
  #47  
Old 01-09-2019, 03:00 PM
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Awesome!!!!
 
  #48  
Old 01-10-2019, 09:53 AM
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Location: Colorado
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Now I just need to add a little giddy up go. Last weekend Grandson got a 3rd place in his very first qualifying ice race, then WON 2nd in the main. Nothing like seeing a kid get a trophy 😊.He just couldn't keep up with a 90cc kid in the straights. I'm sure there are Great threads on gear ratios etc. I look forward to reading up on it.

cheers to all in 2019
 
  #49  
Old 02-02-2019, 06:18 PM
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Join Date: Jun 2012
Location: Colorado
Posts: 30
Default Gear ratio change

After reading some threads on ratios (good bye 520) I went ahead and followed some posted advice. Kids ATV now has 428 25x13 setup (1.92:1 I think) might change front to 14 for 1.78:1, is that too high??. Also added a chain tensioner and 2.5" wheel spacers. Nicely improved stability and speed. If I follow all posted info correctly, #40 chain can be used on these new 428 gears for even less drag, is that correct?? This past Sunday the grandson won his very first 1st place trophy. WOW that was fun. And yes a grandpa can smile ear to ear. I think some carb tweaking is next, it still stutters under throttle before it smooths out and revs. Maybe jet change?? THANKS to everyone for your support and advice.
 
  #50  
Old 02-03-2019, 08:45 AM
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LT80 Expert
Join Date: Mar 2001
Posts: 7,881
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Very cool!!
Gear ratios can only be guessed on for ice. Try them and learn I guess. Yes, go to #40 chain. There are links and 1/2 links available.
I'd try lowering the needle and see if that helps the stutter. OH yea, It's called "the famous LT80 bog".. lol
Did I do port work on your cylinder when I had it?
If you PM me your address I'd like to pay for that bearing.
 

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