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Fastest LTD I have ever rode
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Patrick Kolenko
post Jan 23 2006, 10:29 PM
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Hey Guys! I just got my 81 LTD out that I have been working on for a couple of months.I did a Mikuni conversion running 36mm's with no air box. I still have a little bit of a bog but man when it goes you can't steer because the ski's are in the air. This is the 3rd LTD I have ever owned and up till now they never impressed me. I know that my Invaders would take the other two I owned but I think this LTD is quicker than the Invaders. Now if we just had some more snow?
??
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MIDMICHIGAN550
post Jan 24 2006, 12:08 AM
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Congratulations on getting that done. I had the same reaction when I did that to my interceptors. I remember feeling like I had just discovered nuclear fission or something. You will love having a primer, (they now start on the first or second pull most of the time). Those carbs sure do howl dont they? I run a set of 4 inch k-n filters and they fit perfect without any steering shaft problems. I know I picked up a solid ten sled lengths in 600 ft race with the mikuni carb conversion. (power jets). I was able to run a taller gear that helped make a lot of speed at the end of the race where I never had enough hp to do that before the conversion. Not to mention how well the throttle cable pulls now. Now I can pull the carbs in about five minutes if I want to do any maintenence on them not like the job that used to come with the kehiens. Have fun with it, you will love the new found speed.
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Eric Winkworth
post Jan 24 2006, 07:28 AM
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other then eating gas the Kehins work amazing on my LTD starts usally 1st pull, track never stops spinning and when you use the acclerator pumps on the low end no bog what so ever. She'll do 100mph well at least thats what the speedo says, the helmet I wear is a motocross style one with a beek and the first time I did the high speed test it felt as if my head was gonna be ripped off, now I know to keep the beek down.
I am getting some extra 36 mikuni's with the invader i'm getting, I would be very grateful if you shared some jet sizes with me. LOL
I already schooled this invader i'm buying, but it is so cherry I couldn't say no, gotta make room for 1 more sled.
something that just came to mind I never asked, although the grips are hard and not overly grippy at all, do the freaking things ever show any signs of wear? My drifter has more hours on it then most sleds ever see, maybe they are new grips, I dunno.
cheers
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Patrick Kolenko
post Jan 24 2006, 10:17 AM
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Hey Midmichigan550. I have a 550 Interceptor that I am still running Keihins on and it totally rips. I can pull the ski's at 40 mph and the throttle response is excellent. When it runs as good as it does now I just can't see converting it. I bought this sled from the original owner about 6-7 years ago and he has a wall of throphies won with this sled. It was raced from day one and only had 600 miles on it when I bought it. Now it had about 1500 on it and have never had a problem except for snapping the driveshaft in two and have broke a few belts. I am running a 1 1/2" paddle track on it and the skis are in the air more than they are on the ground!!!!!! I also live in Michigan and it sure would be nice to get some snow!!!!!
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Alex
post Jan 24 2006, 10:47 AM
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We need snow here in north Ia.too.I called the hotel at Waconia and she said there is snow in the ditches-but if it's like what we have it's like half cured cement. Just got done putting 2 new pistons in my 550,be nice to have some good snow to break it in.i think I'll try the mikuni deal too,carbs probably caused the piston problem-hate to buy 2 more. dry.gif
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Boomologist
post Jan 24 2006, 11:28 AM
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QUOTE (Patrick Kolenko @ Jan 24 2006, 07:17 AM)
I am running a 1 1/2" paddle track on it and the skis are in the air more than they are on the ground!!!!!!
Before I got my first Interceptor I had read that they would pull the skis for incredibly long distances. I thought it was more hype than anything, until I got my first. It, too, had been on the race circuit (grass drags mainly) and had never lost a race in it's class.
The first time I snapped the throttle the skis came way up and my eyes were the size of dinner platters. Wasn't expecting that. It's fun to be riding with friends and fly past them with skis in the air. And yes, they will pull the skis at 40!
Both my Interceptors have Mikuni 38's with no power jet and a brass screen shaped like a K&N filter clamped to each carb.
God I wish we had some snow here! Perhaps to the mountains this week.......
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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MIDMICHIGAN550
post Jan 24 2006, 12:11 PM
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Mr. Kolenko I never said you had to convert to mikuni carbs. If you are happy with the way the sled runs and it is doing fine I would not change it either. Mine was fast too. Problem is its not 1982 anymore and I am not racing polaris centurions or 9500 blizzards or arctic cat eltigres so the trophys are a little harder to come by with todays competition. My motivation came from racing against sleds that now have 125-150 hp like formula three ski doo's, mach z's, zrt 600's and 800's, firecats,polaris ultra's, xcrs, 600-700-800 xc's, yamaha 700 srx's. You get the idea. When I go to the lake people are not bringing out 440 and 500 stuff out anymore and unless you want to look foolish you have to try different things to stay in the hunt and the victories come few and farther between. If all those sleds I listed above were racing back in 1982 I guarantee your sleds former owner would not have all the trophies he bagged back then. I know the kawi is a fast sled and was a rocket in its day but the competition is extreme. I race in a group of hardcore drag racers and they are not there to loose. I just give some info on the board but you don't have to take it to heart. Keep the sled mint and original. I like that too. Just keep the kawis going because it is always cool to see one out there kicking butt. Later.
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Boomologist
post Jan 24 2006, 01:05 PM
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Any more thought about a blower/turbo system on a piston ported engine? To add a few pounds of boost to the intake would greatly increase power but I don't know if it would work with these engines.
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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Patrick Kolenko
post Jan 24 2006, 03:24 PM
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Hey Mid Michigan! I really appreciate the info about the throttle cable for the Indy 500. That is the main reason why I haven't converted other 550's I have had. I also have a few 440's out of LTD'S that I had thought about installing in an Invader or building a 550 Invader. Now that I know there is a cable out there that makes running Mikunis possible this may be a project for next fall?
?
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Eric Winkworth
post Jan 24 2006, 05:57 PM
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I am getting some extra 36 mikuni's with the invader i'm getting, I would be very grateful if you shared some jet sizes with me. LOL
you obviously don't have too, just asking, well beggin you!!
PLEASE!
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Boomologist
post Feb 7 2006, 12:42 PM
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QUOTE (Patrick Kolenko @ Jan 23 2006, 07:29 PM)
Hey Guys! I just got my 81 LTD out that I have been working on for a couple of months.I did a Mikuni conversion running 36mm's with no air box.
Hi Pat,
In a nutshell could you describe what the conversion took.
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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maxi426
post Feb 7 2006, 03:21 PM
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Could you please include better info on the throttle cable? Exact application, or a part number. I've looked in High Perf., and Dennic Kirk, and there doesn't seem to be one clear listing for a 500 Indy. Rob
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sdog53502
post Feb 7 2006, 03:33 PM
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I checked out Dennis Kirk today and the picture they had for the 89 500 Indy was just the throttle cables without the oil injection cable....
HELP !! sad.gif
Could it have been from a different year Indy or was the picture wrong ??
Thanks, Steve
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maxi426
post Feb 7 2006, 05:19 PM
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MIDMICHAGIN..... Are you out there? Help us pleeeeease.
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maxi426
post Feb 7 2006, 05:22 PM
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MICHIGAN. Sorry.
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MIDMICHIGAN550
post Feb 8 2006, 12:41 PM
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I know what a pain in the rear those parts catalogs are. I went through the same thing when I was trying to figure out the cable. It has been a long time since I have ordered the cables but I looked it up and it would be the 89-93 Indy 500/ classic, cable part number 19-403 for $20.95 . That should be the one. I see now they don't sell the throttle lever for the mikunis but JR. Graham does but they were out of stock. Maybe ALS in Vermont has one or grab one off a junk 440 invader. They are only $2.00 dollars and dont use one for a polaris or arctic cat because they look stupid on the kawi. They are bigger. Dennis kirk has the choke cables too part no. 19-29 for $11.95. They also have carb flanges for a 440 invader. If you are using 36-38 carbs order part no. 18-68 and they are $8.95 each. There is a nice set of 36mm mikunis on ebay right now that are bored to 37.5mm under ski-doo blizzard. Dennis kirk has the primer kit too part no. 18-62 for $14.99. That should do most of it. If the throttle cable ends have a little trouble going through the holes on the kawi slides dont drill out the slides. I think the polaris slides have a little bigger hole in them. You will see what I mean. Just carefully grind a little off the end of the little ferrell that goes through the end of the slide and locks in place. It only takes about a minute to carefully do it. Just enough to make them fit but not too much. Good luck, it will work like a factory set up. Later
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maxi426
post Feb 8 2006, 12:47 PM
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Great info. Thanx a ton. Would be great to pin this in the tech info section. Rob
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Boomologist
post Feb 19 2006, 02:51 PM
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Found a cheap fix for the cable replacement when putting VM36/38 on LTD (Interceptor too).
Using the standard Invader cable setup I just cut the end off the oil pump cable and inserted a standard cable stop, like the stops used on a manual automobile choke. Just slide it up the cable and lock it in place.
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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Trucker
post Feb 19 2006, 02:59 PM
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That is what they did on my interceptor when it was converted to minkuni carbs, i looked at the part numbers on the cable and it was an invader cable setup.
--------------------
Jason 320-260-1684
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Kamasaki 550
post Feb 21 2006, 02:15 AM
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Same here, an Invader set-up on the Interceptor! The only bad thing is they didn't hook up the oil injector! Oh well that's an easy fix!
--------------------
RIDE LIKE THERE'S, NO TOMORROW!
VICTOR "KAMASAKI 550"
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Boomologist
post Mar 10 2006, 08:22 PM
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Finally got an EGT installed on the LTD with the VM36 power jet carbs. Took it around the property and WOW does it ever have great acceleration from a standing start! The EGT never went above 800, although I can't keep it wide open for very long. Too many barbed wire fences.
I plan to take it to a neighbors in the morning where I can open it up for much longer distances. If it works like it should I may even convert the Interceptors.
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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Boomologist
post Mar 11 2006, 10:44 PM
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Update,
Got the LTD to the neighbors for some slushmobiling. That thing screams! I believe it may keep up with an Interceptor. On dirt I believe it would come over on it's back. That much power off the line is a waste without a paddle track.
Good call on those VM36 power jet's on an LTD.
--------------------
Thanks,
Ron
Ski tips touching the water, hand on the throttle, engine revving, the smell of two stroke exhaust, looking 1/4 mile across at the shore on the other side. Thought going through his mind "what the hell am I doing"! Then the instant explosion of noise, adrenalin, water spray.......
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KAWI LTD 440
post Sep 21 2007, 09:06 PM
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For those looking for a cheap , easy way to Supercharge their engines , you might want to check this out.
Link
Duhnis
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kawhead
post Jan 29 2008, 04:32 PM
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i just finished a carb conversion on a 82 ltd, after some re jetting ended up with stock 440 invader carbs, jetting, throttle and choke cables.after 40 km or so,beat on it some, runs strong,starts nicer than stock carbs imo.it hasnt been under 15 degrees,so a little concerned about to lean, but with 140 power jets it was way to fat so 120s should be ok. tom
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Duhnis
post Mar 16 2009, 07:06 PM
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Hi,
I bought 38 flat slides from AAEN , responsive, But really hard on gas. - stock LTD chassis.
I ran 39.5's on the ltd 440 engine, with polaris clutches and a huge gain was had with better fuel mileage.
I later ported & polished the cylinders and cut the head for more comp, when it was in the '79 polaris TXL with middlesex pipes and never had any issues. Putting the engine in a '76 Merc Sno- Twister, biggest gain yet, ran Black Magic Z440 pipes. Made a set of wild pipes out of the stock exhaust with 17mm id stingers.
I haven't tried them and I may have to go to 19mm id.
Later I purchased 44's, but end up taking the engine out of the sled.
I haven't had the time to put it back or work on the polaris powered invader this year either.
The round slides work well, Has anyone tried the mikuni rack syle off a newer polaris?
Duhnis
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dooman
post Nov 13 2009, 10:35 AM
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QUOTE (Duhnis @ Mar 16 2009, 07:06 PM) *
Hi,
I bought 38 flat slides from AAEN , responsive, But really hard on gas. - stock LTD chassis.
I ran 39.5's on the ltd 440 engine, with polaris clutches and a huge gain was had with better fuel mileage.
I later ported & polished the cylinders and cut the head for more comp, when it was in the '79 polaris TXL with middlesex pipes and never had any issues. Putting the engine in a '76 Merc Sno- Twister, biggest gain yet, ran Black Magic Z440 pipes. Made a set of wild pipes out of the stock exhaust with 17mm id stingers.
I haven't tried them and I may have to go to 19mm id.
Later I purchased 44's, but end up taking the engine out of the sled.
I haven't had the time to put it back or work on the polaris powered invader this year either.
The round slides work well, Has anyone tried the mikuni rack syle off a newer polaris?
Duhnis
taper bore a set of 38's and they will flow air like 44's and have better throttle response.
This post has been edited by dooman: Nov 13 2009, 10:35 AM
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ultramotorsports
post Feb 14 2010, 12:22 AM
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anyone still hav any of the keihen carbs they took off?ive got a 81 ltd i just bought with 685 original miles on it,one jet was broke in the bowl from someone overtightening it i tried a set of 122 jets way too big, they were the only ones i had and no dealer stocks 98 main jets for the carbs,i too would love to do the swap but with the low miles dont want to change it around,need some parts for it, shame for it,nice having the electric start
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Duhnis
post Mar 11 2010, 11:15 PM
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QUOTE (ultramotorsports @ Feb 14 2010, 12:22 AM) *
anyone still hav any of the keihen carbs they took off?ive got a 81 ltd i just bought with 685 original miles on it,one jet was broke in the bowl from someone overtightening it i tried a set of 122 jets way too big, they were the only ones i had and no dealer stocks 98 main jets for the carbs,i too would love to do the swap but with the low miles dont want to change it around,need some parts for it, shame for it,nice having the electric start
I have a good set (they were when taken off) and a set that I bought to have as spares (unknown condition)
for when I ran these on the intruder.
I don't have any need for them. Trade for??
Duhnis
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Robby
post Jun 9 2010, 08:20 PM
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i see you got a ltd .do you need a batt to run the light on it .your want do i look for to fix it .yes my is fast too and love it .it makes me smile when i ride it rolleyes.gif
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Yotadieselboy
post Feb 3 2011, 01:46 PM
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QUOTE (Boomologist @ Feb 19 2006, 02:51 PM) *
Found a cheap fix for the cable replacement when putting VM36/38 on LTD (Interceptor too).
Using the standard Invader cable setup I just cut the end off the oil pump cable and inserted a standard cable stop, like the stops used on a manual automobile choke. Just slide it up the cable and lock it in place.
Where would I find this standard cable stop?
Last piece of the puzzle!