Author Topic: K341 Pulling Build  (Read 164975 times)

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Offline Squidd

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Re: K341 Pulling Build
« Reply #60 on: November 16, 2010, 08:27:17 pm »
Where is the trigger point on the Crank sensor...?

I have the flywheel dialed in to 0* I have a degree tape from Vogal as well as degree wheel to set it at 28* BTDC...

But where do I lock in the trigger magnet... the pick up is 3/4" long and magnet is 1/4" should I set it in the middle of the pick up...? beginning ? when it leaves ?

Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

Offline FlatheadPuller

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Re: K341 Pulling Build
« Reply #61 on: November 16, 2010, 09:35:59 pm »
I would think in the middle but I honestly cannot give a for answer. On my home spun setups it is the middle of the pickup. Might want to call MWSC.
Dennis Bazzett
Grandville Michigan

Offline Squidd

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Re: K341 Pulling Build
« Reply #62 on: November 16, 2010, 09:42:41 pm »
I set it with the magnet in the middle but I'll give MW a call to confirm...

The bracket itself has a good 15* or so adjustment to "fine tune" the timing once I get a light on it.

Randy Stys
"Pull My Finger"
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Offline fordman21

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Re: K341 Pulling Build
« Reply #63 on: November 17, 2010, 12:41:06 pm »
Mine look to be set in the middle too Randy.
Ryan Kerr  519-332-9532
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2008 All American Lawnmower Championsip Outlaw twins champion.
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Offline fx28

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Re: K341 Pulling Build
« Reply #64 on: November 17, 2010, 05:35:22 pm »
I do not run that type of setup ,however I think you could use a volt ohm meter on the pick up and find where it hits at.  On a side note on my msd pickup I was told that I would need to add a couple of degree's of lead from the actual point of where the magnet and the pickup lined up to where it hit while running.

Chuck Miller

Offline Squidd

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Re: K341 Pulling Build
« Reply #65 on: November 17, 2010, 07:46:05 pm »
It's ALIVE...

I checked the timing with a 12v light, comes on at 20* and goes out at 35* so mid point is right at 27.5 or pretty close to
 28*

Fired it up and got it to idle...but thats all it would do...any throttle at all and it stumbled out (lean?) I could get it to roughly rev up sorta if I used my hand as half choke...but would die out almost immediatly

I opened the carb and sprayed it out with cleaner, was very clean inside all passages appeared open...put it back on same thing...

I put on the stock #26 carb I bought off e-bay and once I got it dialed in was very responsive would idle and run to full rev and hold , it leaks gas out the bowl gasket so I took it off, buty motor did respond...

The first carb was set up for fuel pump pressure and right now I'm just using a gravity feed tank  on a ladder..would that be the problem with the carb, lack of pressure..? Hopefully electric pump shows up tomorrow..

Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

Offline fordman21

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Re: K341 Pulling Build
« Reply #66 on: November 17, 2010, 08:15:11 pm »
That's must be where the problem is, higher fuel pressure will raise the float level a lot. Is there any abnormal restriction feeding the carb when the float is down by blowing into it?
Ryan Kerr  519-332-9532
2007 Troy Bilt Grand National Super Modified Champion.
2008 WOO Outlaw/FXT class Champion.
2008 All American Lawnmower Championsip Outlaw twins champion.
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Offline Squidd

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Re: K341 Pulling Build
« Reply #67 on: November 17, 2010, 08:37:01 pm »
It was definetly "tighter" or more restricted in the bigger carb compared to the stocker...

I cleaned it out again sprayed it and blew thru the passages and put it back on...

I did have to open the adjustable main 4 turns..?? but now have throttle responce to WOT

Still stumbles just off idle but if I feather past that it responds well in the upper ranges...

I think I'll give 'er one more spray down and hook up the pump and see where we're at tomorrow...

I do have to say i am impressed with how "smooth" this thing runs compared to the Briggs motors...I did have the rotating assemblys all balanced and I'm sure the 30# flywheel soaks up some of the vibes..





Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

Offline FlatheadPuller

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Re: K341 Pulling Build
« Reply #68 on: November 17, 2010, 09:24:43 pm »
Got to have a fuel pump on that carb Randy. It has a small hole needle and seat. Won't run correct with gravity feed. I ran my engine 3-4 turns out on the main. Adj idle so when low and slow you get a puff of black every time it fires. Should rock and roll. That carb with a fuel pump will have all the response you need. Atleast on my wisconsin it did.
Dennis Bazzett
Grandville Michigan

Offline Squidd

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Re: K341 Pulling Build
« Reply #69 on: November 17, 2010, 10:07:01 pm »
Cool... will put the pressure to it hopefully tomorrow
Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

Offline jerb

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Re: K341 Pulling Build
« Reply #70 on: November 17, 2010, 10:18:32 pm »
too bad videos don't do an engine justice....would like to hear it run! great build Randy!
Tim Jerby
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Coming soon...super mod twin!

Offline Squidd

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Re: K341 Pulling Build
« Reply #71 on: November 18, 2010, 09:21:02 am »
Yeah, video sound isn't any better then the computer speakers you play it on...

But a picture is always cool... 8)



Definetly a "thumper" when your standing next to that pipe playing with the carb... (my one ear is still ringing)
Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

Offline fx28

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Re: K341 Pulling Build
« Reply #72 on: November 18, 2010, 12:26:20 pm »
Nice job Randy!!!!!!!!!!

Chuck Miller

Offline gtpuller

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Re: K341 Pulling Build
« Reply #73 on: November 18, 2010, 05:24:04 pm »
Congratulations on a job well done!!!!


Tim Johnson
Tim Johnson

Offline Squidd

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Re: K341 Pulling Build
« Reply #74 on: November 18, 2010, 08:36:48 pm »
Thanks Guys, appreciate all the comments as well as the advise I've been getting as I build...

It's coming along nicely, got the fuel pump in today wired and plumbed and it did make a big difference in the way it runs..

Much more stable and adjustable..just a touch of stumble off slow idle, but smooth if I start with a higher idle. I think I can adjust it out once it breaks in a little more...

I haven't put the tach on yet so no numbers to report.
Randy Stys
"Pull My Finger"
 63 Cub Cadet S/A

 

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