dual carb trailfire

Technical topics related to machines powered by Kasasaki motors
stanger
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dual carb trailfire

Post by stanger »

Hey just looking for some more juice out of my 82' trailfire 440, im looking to swap it to a dual carb setup using two 32 mikuni's, i have two running kawasaki intruder motors with all the parts needed, question is can you use the intruder cylinders on a trailfire motor with single carb?? anyone ever did this swap or seen it done?? or has anyone ever did a complete intruder motor swap in a trailfire.?? any pictures on the swaps or info would be greatly appreciated.

Thanks
Matt
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dual carb trailfire

Post by Matt »

A complete Intruder motor swap would probably be pretty easy. I would guess that the motor parts are not interchangeable.
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That Girl Racing
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dual carb trailfire

Post by That Girl Racing »

I don't think you will get the performance gains you are looking for.
ICCSF 108
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Post by ICCSF 108 »

Duel carb adapters for the T-1 motor $85.00 that includes shipping anywhere in the US, Canada might be a little higher..

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"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
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stanger
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dual carb trailfire

Post by stanger »

where do i find adapters?? any websites or ads i can find these?? so the intruder cylinders wont bolt up to a trailfire 440??
ICCSF 108
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dual carb trailfire

Post by ICCSF 108 »

I believe that the intruder cyl's would be the same as the Sportfire cyl's
The T-1 Kawi duel carb adapters can be found on ebay once & a while.
But they don't go cheap most of the time..
Kenny
Last edited by ICCSF 108 on Sat Mar 14, 2009 2:35 am, edited 1 time in total.
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
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guitardude081
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dual carb trailfire

Post by guitardude081 »

I did the dual carbs on my old '83 Sportfire. It had a decent performance gain. Nothing to write home about though. It had a little better mid and high range throttle response being that each cylinder was able to breathe better, other than that; if I were to do it again, I don't think it'd be worth the trouble to find a Liquifire airbox, hose, a spare 34mm PJ carb and the adapters. You could probably get some gain if you had some porting done to the cylinders and had .005" cut from the combustion chambers in the heads. (A service which our very own Jerome Kretzman from Crankshaft Services provides) Honestly, I would appreciate the sled for what it is. If you're craving some speed out of a Deere, I'd buy a Liquifire or a Sportfire. Don't quote me on this but I don't think the T-7 engine will work in the Trailfire chassis. However, if you find a pair of dual carb adapters for a decent price grab them. They would be cool item to add to your collection.
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427cobra
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dual carb trailfire

Post by 427cobra »

Hey Guys,

This is a question I have as well.... :popcorn:

I have a 440 Intruder motor with the twin carb set up. I just rebuilt the engine. I have to figure out what I want to do with it now! I also have the dual carb kit for the Trailfire.

I have the carbs for the Intruder and also a few extra 80's LF carbs. I have an extra LF air box and hose. So I should have all the parts needed to complete the transplant. I am not sure what route I should go...

What set up do you think would be better? I am thinking of putting the engine into a Trailfire chassis....but I have a 80 LF chassis available too.
Last edited by 427cobra on Sun Mar 15, 2009 1:50 pm, edited 1 time in total.
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Post by JDFanPa »

Rich any ideas on mounting the intruder motor in a trailfire. I have a decent intruder that I planned to sacrifice alot of peices from to fix up a beat up invader I own. If you remember the frankendeere sled I bought it has a trailfire bulkhead and with the intruder being stripped down I had hoped to use the motor in the frankendeere project. Honestly I havent looked at how the intruder motor mounted so I was guilty of assuming since it was a kawi motor it would bolt to a trail engine plate.
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JoeRainville
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dual carb trailfire

Post by JoeRainville »

Andy,

The Intruder motor will hit the TF/SF chassis. The jackshaft to run the oil injection pump hits the side of the frame. Some modifications can fix that, and you will need a Sportfire motor plate. Do do think the Intruder motor will fit into a LF however, as the Intruder was basically a fan cooled Invader.

Rich, feel free to correct me if I missed anything!

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427cobra
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dual carb trailfire

Post by 427cobra »

Hey Rich,

I noticed some interference when I tried putting the Intruder motor in the LF chassis. I used a LF mounting plate.....seemed to me the engine was too low..?? I think it was hitting some steering components.

What modifications do I need to make?

Thanks!
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"Life is tough, but it's tougher when you're stupid" - John Wayne
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Post by ICCSF 108 »

Eric, you might want to ck hood clearance also as the fan motor might be higher than the liquid??

Kenny
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
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dual carb trailfire

Post by JDFanPa »

Joe thanks for the details I will just need to find a sport plate when the time comes
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427cobra
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dual carb trailfire

Post by 427cobra »

I will look into that Kenny.

I need to figure out what modifications I need to make to get the engine to fit into the LF chassis.

Thanks!
Eric A.

"Life is tough, but it's tougher when you're stupid" - John Wayne
Soderberg
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dual carb trailfire

Post by Soderberg »

The TF motor is very easy to tune up if you have some skills. I own an -81 LF and an -82 TF 440. I havnt competed since the mid 90ies and I sold my last snowmobile 7 years ago. The vintage thing has blown up fast in Sweden the last 2-3 years and a month ago I decided to build something for next season. The brand was easy as my first snowmobiles over 20 years ago was JD:s. Two LF 440 and one SF. Therefore I bought the two I own a month ago.

The LF had some faults but was more or less a fully restored LF. The TF had one owner (today 67 years old) and it had less than 2000 miles. The LF still is untouched as I started with the TF. The normal thing for an old snowmobile had to be done (crankseals). As I ported and tuned up almost every 2-stroke Ive owned, thisone couldnt be left when it was taken apart. What I did was this.

1. I raized the exhaust port 2,5mm and lowered the intake 2mm. This is less than a SF but I dont wanna go all the way at once. After some measuring I realized that I have enough material to make it close to the LF:s port-times if I need to in the future. This change will be enough for this season. Together with the changed ports I ofcourse made everything else in the cylinders smoother and sharper.

2. I made new intakes so that I can could use the LF double carbs. They are too big but they worked okay after some adjustments. Ill change them next season for a size smaller carbs or a single 38mm.

3. I had an old Aaen single pipe from an early 90ies Indy trail. I had to do some cutting and welding but it wasnt that much.

4. I left the cyl-heads as they were. Ill take care of them before next season. Im not sure yet if Ill change them at all as I dont like when I cant fill up with any kinda octane. I like power but not when it affect the trustability. The comp was 135 psi on both cylinders.

This changes did alot to the motor and it didnt cost me a dime as I owned all parts as before. The LF will next year have two flatslide carbs, so I dont need them on that one. At the end this is not anything that is difficult to do. All you need is an air-compressor and a high RPM grinding tool and some help from a welder if you cant manage yourself. How did it go then?????

Well, hard to guess the power but a guess is 50-55hp. I have a friend with an old but very nice and good running SRV 540. I beat him easily the first 150 meters. Im not saying that I have more power than him. 50% of the win can be blamed on the variators. I know how to make them better, he doesnt :lol22: . Still it says alot of what happened to the motor. Even though I didnt changed the ports as much as it is on a SF, Im pretty sure Ill outrun all standard SFs and Intruders. Ill run like this for the rest of this season and than take the motor apart again. Ill go for the SF porting and maybe take off 0,5mm from the cyl-heads. More than that is overkill in my opinion as I will use this one as the family sled. The LF will be used for race and will be the one I put effort into. The goal is 90 friendly hp and a lot of work with the variators. I have a friend with a 100hp SRX 440 -79. He wins or at least goes to the final every time he races. I have promised to beat him with a JD and so it will be :lol22: I hope to manage that with more knowledge about variator tuning. This will also be reached with the stock cylinders and not hte LTD ones.

Take care
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