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Unread 01-29-2015, 08:10 AM   #11
Not Yet Wild
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Default Re: Spirit 340 Install Woes

Couldn't find the year, but did find out that it had the rings, and got the pistons turned around with only one issue: losing one of said rings in the crank case! Fished it out, bent it back into shape, and zip-pop! She was done!
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Unread 01-29-2015, 10:33 AM   #12
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Default Re: Spirit 340 Install Woes

Be very sure you have the circlip in well, they have
been the cause of many engine failures.
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Unread 01-29-2015, 05:33 PM   #13
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Default Re: Spirit 340 Install Woes

I will double and triple check both before I finally button the engine back up. And, just to be on the safe side, one of the more"expendable" guys in my metals shop will be the one to pull it over the first few times. Assuming that there isn't a snow day tomorrow (supposedly going to get 6-12"), I will be able to get the exhaust squared away, and bang out a good portion of the custom shifter!
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Unread 02-03-2015, 09:28 AM   #14
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Default Re: Spirit 340 Install Woes

Well, there was indeed a snow day... BUT! I DID get the exhaust figured out (The way I had it welded, it goes out to each rear wheel well, and looks somewhat like a performance truck exhaust), and only really have to extend it a little bit to clear the driven clutch and fuel tank.
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Unread 02-12-2015, 01:07 PM   #15
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Default Re: Spirit 340 Install Woes

Well, finally tried to start it with the reversed cylinders... and it wouldn't start. It isn't getting enough of a vacuum apparently, so it's back to the way it was, and back to the drawing board with the exhaust. As for the year of the engine, it is out of a 1979 Jag 3000 F/A.
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Unread 02-13-2015, 07:52 AM   #16
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Default Re: Spirit 340 Install Woes

You turned the pistons along with the jugs?
Checked to be sure the base gasket sealed at the asymmetrical transfers?
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Unread 02-15-2015, 11:08 PM   #17
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Default Re: Spirit 340 Install Woes

Quote:
Originally Posted by Baseless View Post
Well, finally tried to start it with the reversed cylinders... and it wouldn't start. It isn't getting enough of a vacuum apparently, so it's back to the way it was, and back to the drawing board with the exhaust. As for the year of the engine, it is out of a 1979 Jag 3000 F/A.
Do you have any ideas on why the engine didn't start? I have an arctic cat/Suzuki 500 that I was planning on trying to swap the jugs on because my customized exhaust ended up being worse then no exhaust.
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Unread 03-02-2015, 08:51 AM   #18
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Default Re: Spirit 340 Install Woes

No clue why... Does your engine run now? If so, DO NOT take it apart! I put my jugs back the way they are supposed to with new gaskets, and it doesn't run for any length of time. It backfires steadily every 5 seconds or so, then completely shuts off... Any idea why? Because I'm no expert, but I'm preeeeetty sure that balls of smoke are NOT supposed to shoot out of the carburetor...
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Unread 03-02-2015, 03:06 PM   #19
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Default Re: Spirit 340 Install Woes

This afternoon I tried starting it, and it wouldn't even KINDA offer to start. Going to see if I need to clean the carb tomorrow, but I shouldn't... Other than that, I have no idea what else could possibly be a problem, unless one of the piston rings broke while buttoning it back up!
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Unread 03-02-2015, 08:12 PM   #20
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Default Re: Spirit 340 Install Woes

Quote:
Originally Posted by Baseless View Post
No clue why... Does your engine run now? If so, DO NOT take it apart! I put my jugs back the way they are supposed to with new gaskets, and it doesn't run for any length of time. It backfires steadily every 5 seconds or so, then completely shuts off... Any idea why? Because I'm no expert, but I'm preeeeetty sure that balls of smoke are NOT supposed to shoot out of the carburetor...
Mine runs good. On yours, do you have a compression, My first thought is that the valves might have got damaged or turned around. I have had several two strokes with broken rings and they never backfired. I have also had back firing issues while the carbs were dirty and running really lean, and something as simple as having the plug wires switched around or the air filter not on have also caused me issues. I haven't had the timing cause me any issues.
I might go ahead and try it just because I haven't found anywhere where someone has done this successful, and I can't figure out in my head why this wont work. I'll probably start with a single cylinder before I tear into my twin though. Please be sure you post your findings, I like to have as much info as I can before I get to my 500 twin because I can't afford to screw this engine up.

GOOD LUCK
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