Welcome to the DYNOTHON!
Date - May 9, 2013
I’m challenging ALL of you to –
A – Join in the fun.
B – Help us raise some funds for this website, which Slim and Nancy have been bearing the headaches and responsibilities for - along with the help of a few volunteers, for – heck, quite a while, now.
With Slim’s cautious blessing, I’m challenging you all to make a commitment to support this site with a donation. The donation will be based on the BEST HORSEPOWER PULL WE CAN GET OUT OF MY 999 CC, 5 PORT, CARBURETTED, NORMALLY ASPIRATED, 3-MAIN BMC FORMULA 2 SPEC A-SERIES ENGINE.
Based on what is typical of the BMC engine when set up for racing, our best, optimistic guess should see this thing at between 93 and 105 horsepower.
Some examples for comparison
1. A 1310cc version of this engine, built by Fordboy, cranked out about 135 horsepower. That was on SU carbs, and built to SCCA specs.
2. On the other end of the spectrum, Dick Leuning of MG Limited and the Killer Beez racing team told me that 95 hp was about all one could expect out a 948 Sprite block, fully prepped.
What distinguishes my engine from either of these examples is what follows –
A. I have the bigger bore of the 1310 engine, which allows me the use of bigger valves than the 948 Sprite engine.
B. I have a shorter stroke and, of course, less displacement than the 1275 based 1310, but the 1310 is considered undervalved for its displacement, so the head, though intended for a larger engine, actually breathes better with respect to the displacement than the larger engine.
C. I’m running a Weber DCOE carb, rather than the SU carbs, with a better breathing manifold than one can typically find for SUs.
D. I’m running a direct fire Electromotive ignition which will allow me to dial in the advance curve to within an inch of its life, plus provide the safety of a knock sensor.
E. The cam was custom ground by Dema Elgin to specs set forth by Fordboy for this specific application.
F. We’ll be experimenting with three different sets of headers, and possibly two manifolds, looking for the best power under the curve we can get. That said, the final iteration of the tune may not necessarily be the one with the largest horsepower number – we may decide to give up a little on top for a tad more grunt. Nevertheless, the largest horsepower number we generate will be the multiplier for the donation to landracing.com that I’m asking you to commit to.
Fordboy will be posting the numbers.
I’ve kicked it off with a commitment of $1.00 per horsepower.
Rex, Jon and Graham have already met that challenge – thank you gentlemen. My goal for this is to see Slim and Nancy rake in at least $2,000.00 from this little side show. If I can pull 100 hp, we’re already 1/5th of the way there.
No contribution will be considered too small, and if you’d rather not make your generosity public, simply PM Slim the amount you want donate per horsepower, and we’ll maintain your anonymity.
Let’s keep this site financially healthy, and have some fun doing it.
Thank you in advance for your generous participation!
Chris Conrad