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Topics - sporty

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1
Non-Affiliated Races / Flat Run Speedway Central PA
« on: September 13, 2013, 12:19:15 pm »
Our gang is headed to Flat Run Speedway this Sat. 9/14 if any of you Central PA guys want to come out and play with us.  We have FXT style mowers.

Off exit 133 I-80

http://www.flatrunspeedway.com/

2
Kohler Engines / Kohler V-Twin discussion
« on: March 25, 2013, 10:31:23 am »
Thinking of exploring Kohler as a future build so, I've been searching and reading.  Haven't seen much discussion on what engines (blocks/heads) are most desireable.

If a guy was looking to build a strong running Kohler, what is the best block/engine to look for?

Are there certain heads to look for that are better?

This engine would be for an F/XT style machine, not sure if I'd go verticle or horizontal at this point.

Thanks

3
Briggs OHV & Vanguard / Vanguard cranks
« on: October 20, 2012, 11:23:30 am »
Found the part number for a large journal, vertical 30 crank on Heymow.  It is about 1.5" shorter than a 35 crank.  Does anybody know if there is longer version?

Also wondering if the balance will be OK if using the 30 crank with 38 forged pistons.  Weights are certainly smaller on the 30.  Anyone know?

I find it interesting that there is no machining whatsoever on the 30 counterweights.  Seems like it is already a compromise. (Fine for it's intended purpose as a grass cutter)


4
Briggs OHV & Vanguard / Single oil pump pan
« on: April 10, 2012, 06:15:54 pm »
Is there any isue of running a pan from a pressure lube single on an engine that doesn't have the crank drilled?  Wondering if it will be too much restriction if oil is only going to main journal.  Too much oil pump drag?  So much drag that it could damage pump or shaft/cam?  Thanks

5
Briggs OHV & Vanguard / .620 pistons, bore=?
« on: March 29, 2012, 06:40:00 pm »
Does anyone know of a .620 comp height piston with a bore in the range of 2.836 to 2.973? Wrist pin preferably .490.

Thanks

6
Briggs OHV & Vanguard / ARC rod bore
« on: January 28, 2012, 08:25:14 pm »
On ARC Vanny twin rods, does anyone know what the I.D. of the large end is supposed to be?  Without bearings in it.

7
Coffee Shop / Bluefield Coal Show
« on: September 10, 2011, 07:53:24 pm »
I was just wondering if anyone on here will be at the Coal show in Bluefield WV next week?  I'll be there Wed. and Thurs.  Company I work for makes controls for mining equipment.

8
Briggs OHV & Vanguard / How can I make my carb handle bumps?
« on: August 01, 2011, 09:02:01 pm »
Started this season with a brand new 35 Vanny with cam, flat tops, wheel, mild port work, and EC 2 barrel.  I've been having carb issues all year.  Seems to be worse if the track is rough.  It will spit and sputter and evenually quit all together.  Seems like it is running out of gas.  Crank it and it fires a couple times and quits or won't fire at all.  Blow in the breather to prime it, and it starts.  Starting to think maybe it is vapor locking??  In the time playing around it cools down and runs??? 

Oh, and I have a floor mount tank behind the engine with the stock pump in the stock location.  Pulse is from intake too.

Any suggestions?

9
Coffee Shop / Racing related iPhone apps
« on: May 18, 2011, 09:05:15 pm »
Anybody have any apps they found useful for racing?  Like lap timers and such.

10
Briggs OHV & Vanguard / Vanny Twin hi-torque starter question
« on: February 19, 2011, 09:36:59 pm »
My block has a couple bosses casted into it for starter support.  The one towards the rear hits the hi-torque starter preventing it from sitting flat on the mounts.  Should I grind this one down?  If so, should it only be ground enough to let the starter sit flat so that it still provides support?  Thanks


11
Non-Affiliated Races / Western PA racers needed
« on: December 08, 2010, 09:22:18 pm »
Anyone in the Western Pa area looking for a place to race, check out http://slipperyrockraceway.com/.  Nice 1/8 mile clay oval.  Most running there are single cylinders.  We need more twin "Outlaws".

They run a lot of karts and currently have 2 mower classes. 

Thanks,
Chris

12
Briggs OHV & Vanguard / Vanguard twin sleeves centered?
« on: November 27, 2010, 09:25:27 pm »
What's the best way to tell if the sleeves are centered?  They're cast in so you can't see the top at all.  Can see the bottom a little but not all.  Am I just looking for the bore to be centered in the chamfer around the bottom of the sleeve?  How much is too much when boring a 35 to 38?

Thanks

13
Briggs OHV & Vanguard / 38 CI Head CC
« on: October 03, 2010, 07:40:08 pm »
Anyone know what the typical combustion chamber size is on a stock 38 CI Vanny head?

14
Driveline / 820 questions
« on: September 04, 2010, 10:44:06 pm »
Converting my 820 to gear oil and have a couple questions.

1)  Has anyone tried cutting off the brake shaft so that the hole in the case can be sealed to eliminate one of the leak spots?  I'm talking about just cutting the splined end off.

2) Can I remove the orings from the bearings to alow gear oil to get to them?  I think these orings were there to keep the Bentonite out of them.

15
Briggs OHV & Vanguard / Converting recoil to starter?
« on: August 30, 2010, 09:39:23 pm »
I'm looking for a Vanny V-twin to build and was wondering... If I happen to find one that is recoil start, is there anything else needed to convert it to electric start after I get an ARC wheel and hi-torque starter?  Other than wiring that is.

Thanks

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