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Wayne ONeil
Joined: 28 Apr 2006
Posts: 319
Location: United States, Oregon, Newberg
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 Posted: Tue Sep 01, 2009 7:41 am Post subject: |
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| Alan Sheidler wrote: | | As far as the oil goes: First off, we run a flat mount. Normal fill amount is supposed to be 16 ounces, from what I have read to this point, and that is what is in the Briggs manual. I can see where people running the 15 degree mounts might need to run a few ounces more.... |
I run 14 oz with my 15* mount. I tried running the recommended 16 oz, and always had some coming out the breather.
| Alan Sheidler wrote: | | BTW, how can I post photos on here? Must I have them online somewhere, or can I post from my computer? |
They have to be online. You can upload them to a free image hosting service like photobucket, and then display them here... They usually have instructions on how to post them to forums. |
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Chris Hatch
Joined: 02 Mar 2004
Posts: 405
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| Posted: Wed Sep 02, 2009 5:40 pm Post subject: |
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| I tighten my flywheels around 90-100 ft pounds. I also will lap the crank to the flywheel as well as add a washer between the nut and the flywheel cup. There is some minor matching up issues between the flywheel and crank, at least there was when they first came out and once you do something to eliminate a problem, you just keep doing it. However, at only 50 ft pounds, I would expect to shear that key on the stand. |
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Alan Sheidler
Joined: 09 Aug 2001
Posts: 471
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| Posted: Mon Sep 14, 2009 7:28 pm Post subject: |
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Nationals is over, a generally successful run for the family WF engine. Son Colin pretty much proved that the Briggs can run competitively with the KT-100 in autocrossing, even being 40# over the minimum on the scales. If it weren't for a couple of pesky cones, he'd have had 2nd place. He posted the fastest scratch time on the West course.
Following some really good advice, I used lapping compound to get the crank and flywheel tapers to mate very well, after cleaning up some rough spots. Thinking about other press-fits I'd dealt with in the past, I left the flywheel (without cup or fan) in the oven at 225 for an hour, then put it on using a homemade holding tool with the nut and a washer to 75 lbs. I took the nut/washer back off, and installed the fan and cup, this time torqueing to 100 lbs. Checking for true, it had virtually no runout. Fired right up, and ran strong through all laps of the practice course, as well as the longer and faster Nationals courses. The oil issue was apparently my fault for blocking the original vent, and never reappeared again after I installed a catch can (which did not see even a drop of oil).
We had an absolute blast. 
My thanks for all the help and advice I got here, and also to Bill at Stony Creek karting for taking the time to talk on the phone.
Alan |
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