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 1 
 on: Today at 07:25:38 PM 
Started by skyguynca - Last post by skyguynca
I am a aircraft mechanic for most of my life, car mechanic all my life, aircraft engine and jet engine mechanic with inspection auth also. I do know how to find TDC but that is not what I asked. I asked what is the normal BTDC timing is for these engines because the manual does not say.


As for what I am doing, it will have a electronic ignition with a hall effect pickup so I can program what ever timing I want, so I need to know what briggs uses as the standard.
I also know that the racing guys use offset keys to move the flywheel around to change the timing so who better to as what the max dependable?

David
San Jose, CA

 2 
 on: Today at 06:59:49 PM 
Started by supermod - Last post by Big Mike
i sent you pm please reply thanks

 3 
 on: Today at 06:39:03 PM 
Started by amr5080 - Last post by amr5080
Black Friday special, this weekend only $1200. If it doesn't sell, it's getting parted out.

 4 
 on: Today at 04:45:48 PM 
Started by mowcephus - Last post by mowcephus
Partial trades accepted as well.

 5 
 on: Today at 01:06:42 PM 
Started by rene knoll - Last post by Cromwell C4
Where are you guys getting the idea of a 60+ cube kohler? No one that I know in mower racing has one of those. I know most of the people who run a Kohler, and did work on probably half of them. I discuss alot with Julian at MWSC and they sell maybe two engines a year that are that extreme, and they aren't to mower racers. The Kohlers don't get the big CI from boring, the material isn't there either. The biggest bore you can put in a Kohler takes a lot of work by boring the sleeves out and running a Nikasil coating directly on the aluminum. Even still they only end up around .100" bigger bore than stock. But that engine combo will run hot and isn't meant to be ran long. It's common in the pulling world but not mower racing. That still doesn't make the engine anywhere close to 60ci, actually not even 50ci.  The big CI gain is done by using a longer stroke billet crank, which can be made for any brand of engine out there. People would be surprised to see that most of the best running Kohlers in lawnmower racing are well under 50ci and have a stock bore, or close to it. Most of Ryker's fastest engines were only 45ci or less.

I don't see an issue with guys running a 49ci Intek block, and neither would most other racers. Even though its starting with a bigger CI, it's still a "small block" engine and ends up with the same result as boring/sleeving while reducing costs for racers. Some people just like to complain. And it's legal in ARMA to run the 49ci block since their rule is 49ci and under factory rated starting point.

 6 
 on: Today at 01:04:23 PM 
Started by rene knoll - Last post by BIG AL 202
WHAT I SEE IS, YOU MY BE LIMITED TO INTERNAL MODS BUT WITH A LAWN MOWER ENGINE YOU REALLY CAN ONLY GO SO FAR. IF YOU DO GO "TOO FAR" IT'S TURNS INTO A HAND GRENADE. IT DOESN'T MATTER WHAT BRAND IT IS. EVEN IF YOU MAKE A "MONSTER CUBE MOTOR" YOU STILL HAVE TO HOOK IT UP. SO ANY INTERNAL MODS MEANS TECH DOESN'T HAVE TO PULL IT APART, NO CYLINDER PUMPING OR MEASURING OF ROCKERS OR CAM. YOU WILL NEVER CATCH  OR STOP SOMEONE FROM STRETCHING THE RULES ALL THE TIME.

 7 
 on: Today at 12:45:35 PM 
Started by skyguynca - Last post by BIG AL 202
ON THE STOCK ENGINE THE TIMING IS NOT ADJUSTABLE. TO FIND OUT WHAT IT IS YOU WILL NEED TO MAKE TIMING MARKS AT T.D.C, [TAKE THE HEAD OFF AND USE A DIAL INDICATOR] AND USE A LIGHT. WHAT ARE YOU LOOKING TO DO?

 8 
 on: Today at 12:37:41 PM 
Started by George Herrin - Last post by BIG AL 202
AGREED!!  LOL

 9 
 on: Today at 11:57:43 AM 
Started by rene knoll - Last post by more4les
I'm going to "Sound off" here a bit but first I want to remind everyone of my racing heritage. I've been involved in racing snowmobiles, mud drags and D.I.R.T. Modifieds and now lawn mowers. What I first found ironic in lawn mower racing rules was the "Must start as a certain block" and "All internal modifications are allowed". What? No other racing organization that I know of allows internal modifications without limit yet bases the start off an engine cu in. If you are going to have a cubic inch or cc limit it must remain as a complete limit. Let me give a clearer example using a small block chevy. A typical 350 without being resleaved will get to 4.060 maybe 4.090 if the casting is really good. Now a bowtie block 350 will get to 4.215 from its 4.00 stock bore. A small block 400 will get the same. But now you say the small block 400 isn't legal because it started as a 4.125 bore at the factory. Kinda nonsense if you ask me. That's why they use a cube checker to keep everyone under 368. If I want to run a 4.125 piston and 3.44 stroke it is allowed. If I want to run a 3.82 bore and a 4.00 I can. The is no physical size difference between the 44 and the 49 block. It can not be measured externally to separate the two. There is a minor casting difference that allows a trained eye to differentiate the two. This is not a big block. you can't make the Intek 49 as big as you can the 46 Kohlers with any amount of boring. The material isn't there. What I see is the pure hatred of the intek by people who shrug their shoulders at 60+ cube Kohlers.

 10 
 on: Today at 11:38:37 AM 
Started by Jim Knutson - Last post by Jim Knutson
2 sets of used, good, vanguard twin aluminum rocker arms for sale.... $50.00 ea. Shipped in USA only

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