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Post by ruppluver on Jan 30, 2013 18:56:53 GMT -6
I've been running my TR340-3 for 2 yrs now. When I check the plugs,they are dark colored,maybe blackish,wet looking. It is not fouling the plugs. I'm running 40:1,haven't checked to see where the screws are set at,but to me,it seems like it runs rich. Do I adjust both high & low OR just the high side OR ?? Usually if they run,I don't monkey around with them,I know I won't burn this one down!!  Thanks. |
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Post by Ruppsforever on Jan 30, 2013 19:13:26 GMT -6
If your plugs are black after a WOT run then shut off right away your too rich. Just lean out the high speed. Don't mess with the low speed.
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Post by Sticks on Jan 30, 2013 19:39:57 GMT -6
Dan, first off 40:1 is to rich! you must like to support the oil company's, and set around in a cloud of smoke! I mix my Shaffer's synthetic at 75:1 they say I can go to 100:1 but my balls aren't that big!  Turn your high speed jet in a little, and then check your plugs after you take it out for a spin. |
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Post by ruppluver on Jan 30, 2013 20:01:25 GMT -6
I run Amsoil HP injector oil. I don't like to support the oil companies,I was just trying something different this year. I'll lean it down some after the cold weather leaves us. Are we talking 1/4 turns on the high side? I usually run 50:1.
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Post by teamruppcanada on Jan 31, 2013 8:14:39 GMT -6
Dan are you using surface gap spark plugs in that engine? If you are then DO NOT pay any attention to spark plug color.They are the coldest spark plug that you can get so the theory is that they won't pop a hole in the pistons.
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Post by Sticks on Jan 31, 2013 8:57:38 GMT -6
Dan are you using surface gap spark plugs in that engine? If you are then DO NOT pay any attention to spark plug color.They are the coldest spark plug that you can get so the theory is that they won't pop a hole in the pistons. It takes a village! ;D |
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Post by ruppluver on Jan 31, 2013 9:11:32 GMT -6
Not using a surface gap plug. Back in 2008,I did run surface gap plugs in my 73 American 440,had pretty good luck with them. Is that what the sleds with CDI run? I've just had a hard time finding surface gap plugs. What would be the number in Champion? NGK? Autolite? Thanks.
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Post by mrmotors on Jan 31, 2013 10:02:29 GMT -6
If the N19-V will work for you, I've got some extras. Thats the Champion surface gap.
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Post by magnumal on Feb 1, 2013 9:42:03 GMT -6
I can remember back when I raced we would pick up the track and hit the throttle turn the high speed jet in until the sled would shake out of our hands then it was ready to race " Might be why I don't have that motor anymore" LOL
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Post by Ruppsforever on Feb 1, 2013 10:42:20 GMT -6
Dan, Hp injector is 50:1 oil. Thats what its meant to be mixxed at. When I first got into racing I was mixxing it at a 40:1 ratio also. I had oil running through the pipes onto the floor of the shop all the time. I think Luke had the same problem also. Thats when we started mixxing it at 50:1. Never had a problem since.
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Post by Ruppsforever on Feb 1, 2013 10:45:56 GMT -6
Not sure if you know this but they changed the name of HP injector. It is now HP Marine. I even called amsoil when I couldn't find HP injector anymore. They changed the name because there were more boating guys using it than snowmobilers. Same oil..... different name.
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Post by ruppluver on Feb 12, 2013 22:30:51 GMT -6
My latest batch of gas is mixed 50:1,HP injector oil.
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Post by snosnake on Feb 13, 2013 8:51:40 GMT -6
Dan if it is not fouling plugs and you are not burning it down leave it alone.
Oil is a lot cheaper then piston's, rings, cylinders and gasket sets.
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Post by Stretch on Feb 13, 2013 20:10:21 GMT -6
Not using a surface gap plug. Back in 2008,I did run surface gap plugs in my 73 American 440,had pretty good luck with them. Is that what the sleds with CDI run? I've just had a hard time finding surface gap plugs. What would be the number in Champion? NGK? Autolite? Thanks. Dan, the third generation Tohatsu's ran Champion L-20V surface gap plugs with those CDI ignitions. |
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Post by ruppluver on Feb 13, 2013 20:15:33 GMT -6
whats the difference between the N19-V & the L20-V??
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Post by Stretch on Feb 14, 2013 6:24:08 GMT -6
The reach - N19V's have a 3/4" reach and the L20V's are only a 1/2" (thread length). And yes, they run cooler but also allow a longer stroke by allowing the pistons to travel closer to the heads which is why you wouldn't want to sub j-gap plugs as they could burn a hole in them. Surface gap plugs in general are more prone to fouling in continued low speeds so, fire that mother up!  |
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Thanks.
