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1  General / Coffee Shop / Re: Questionable "internal" engine modifications. on: June 05, 2015, 01:46:01 PM
And I totally disagree with that and always have...And my reasoning is not open for discussion.
Which part George? The allowing of aftermarket heads in SM? OLe do you think allowed across the board? I'm guessing they should never be allowed is your statement.

2  General / Coffee Shop / Re: Questionable "internal" engine modifications. on: June 02, 2015, 10:50:00 PM
heads are external....period. whats in the heads, that is internal.
Ah but the heads on this particular model are completely behind a heat shield there in making the head internal to the shrouds. I'm 100% with the fact they are an external modification however the point will be made it's internal IF it isn't visible.

3  General / Coffee Shop / Re: Questionable "internal" engine modifications. on: June 02, 2015, 08:23:37 AM
How about billet heads that are completely behind a heat shroud?

4  General / Coffee Shop / Questionable "internal" engine modifications. on: June 01, 2015, 11:02:10 AM
Just for thought. What is considered internal or external? One could argue that behind the shroud is internal. It is inside the outer casing of the engine as delivered. I'm asking because we might have a potential problem within our club on this subject. I don't want to get into specifics but mods done under the covers and shrouds....internal? Also any alteration to a shroud considered external modifications? Removing a shroud considered external modification?


5  Mower Building / Setup Help / Driveline / Re: Mod XR / GP Gearing on: May 20, 2015, 12:00:16 PM
That's tall. 5.00 to 1 - 5.50 to 1 is where we run on 1/10th mile tracks depending on the radius of the corners. Tighter corners require shorter gearing,

6  Engine Help / Other Engines / Re: Kaw FC540v HP Secrets on: March 24, 2015, 10:33:21 PM
tillotson HR
7  Engine Help / Other Engines / Re: Kaw FC540v HP Secrets on: March 24, 2015, 09:16:01 PM
Watch this video.

8  Engine Help / Briggs OHV & Vanguard / Re: intek on: December 09, 2014, 11:37:24 AM
I understand where you are coming from, Lester, but then how would one word it so that it eliminates the "big block" engines?

So sorry to say but you can't limit without limits if you catch my drift. Cube limits and cube checkers. Otherwise remove all limits. Never have a rule you can't enforce or don't want to enforce.

9  General / Coffee Shop / Re: Rev Limiter on: November 30, 2014, 02:45:32 PM
Ron if you are looking for 9200 to 9400 then why not just chip at 9500?  It's for saving an engine not setting a racing rpm. You really don't want it hitting it if possible. Back in our SBC racing days we used a soft rev limiter (MSD) and even then it wasn't very "soft".

10  Engine Help / Briggs OHV & Vanguard / Re: intek on: November 26, 2014, 11:57:43 AM
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.
11  Engine Help / Briggs OHV & Vanguard / Re: intek on: November 23, 2014, 11:19:30 PM

They also have them in vertical. They are 750cc or 46 cu in.

12  Engine Help / Briggs OHV & Vanguard / Re: intek on: November 23, 2014, 10:30:05 PM
Here is my beef when you knock out the 49 block. It lets big money rule the races. You can buy a 49 block for 1/3 the cost of sleeving and boring a 44 block. It takes more than a simple sleeve job to make this work also. It takes extensive welding and machining of the block (internally) to get a head gasket to seal on a 44 with 49 sleeves. A new 49 block can be had for about 175 bucks. If the rule is 44 cube then cube check them all. Regardless how they got above 44 make them illegal. Otherwise this 49 bashing needs to come to an end. How many 30 HP Kohler blocks are out there I ask? More than anyone wants to admit.

13  Engine Help / Honda and Clone Engines / 420 vertical on: November 14, 2014, 08:36:57 AM
Has anyone ever converted a clone 420 to a vertical? I know they make a 390 in the vertical position was just wondering if it's possible and what's involved? I've never dealt with a clone or Honda but this engine would now be legal in Mod-X due to the GXV390, correct?

14  Engine Help / Briggs OHV & Vanguard / Re: 44 Intek exhaust on: November 03, 2014, 08:21:40 AM
We run 1 1/8 inside diameter pipe for our exhausts. Not pretty but used old school desks to build them (all mandrel bent heavy wall piping).

15  For Sale / Mower Engines & Parts / Re: New 49ci Intek Two Barrel Carburetors on: October 25, 2014, 07:17:44 PM
what size are the throttle plates on these?

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