Don Terrill’s Speed-Talk

CGT wrote: ↑Sat Oct 13, 2018 12:06 pm Detonation=bad for power and score
Out of control valvetrain= also bad for power and score

Piston rings, bearings, etc with extremely accurate dyno pull activated fuses that initiate destruction= unicorn $hit

Also...im out^2(off to break more records) but possibly could be right back
FACT^
And MOO
tenor.gif

Warp Speed wrote: ↑Sat Oct 13, 2018 12:26 pm

CGT wrote: ↑Sat Oct 13, 2018 12:06 pm Detonation=bad for power and score
Out of control valvetrain= also bad for power and score

Piston rings, bearings, etc with extremely accurate dyno pull activated fuses that initiate destruction= unicorn $hit

Also...im out^2(off to break more records) but possibly could be right back
FACT^
And MOO
tenor.gif

We're off to a truck pull to test a new carb.
Hope my dyno queen 421 survives another pull.

Not sure we'll set any records, but I hope our new carb works great ^2 LOL


I may be out or in,.... not too sure yet. LOL


Randy

CGT wrote: ↑Sat Oct 13, 2018 12:06 pm Detonation=bad for power and score
Out of control valvetrain= also bad for power and score

Piston rings, bearings, etc with extremely accurate dyno pull activated fuses that initiate destruction= unicorn $hit

Also...im out^2(off to break more records) but possibly could be right back
FACT^
And MOO
tenor.gif

I have some old 78's and some 45's I could send you if your into breaking records... May even have a "Queen" album you can break!.

Sorry for this but just wanted to verify how the scores are calculated. Best HP from 3 dyno pulls, add together than get avg. Take that figure, multiply by 1000 then divide by the cubic inch of the engine. Is this correct?

fdicrasto wrote: ↑Sun Oct 14, 2018 3:31 pm Sorry for this but just wanted to verify how the scores are calculated. Best HP from 3 dyno pulls, add together than get avg. Take that figure, multiply by 1000 then divide by the cubic inch of the engine. Is this correct?

NO ...
For the REC scores; (the EMC is different);
Best AVERAGE HORSEPOWER from 4,000 RPM to 7,500 RPM for the best 3 pulls. Times 1,000 divided by CID.

PEAK horsepower is not figured in the score anywhere.

Walter R. Malik wrote: ↑Sun Oct 14, 2018 3:42 pm

fdicrasto wrote: ↑Sun Oct 14, 2018 3:31 pm Sorry for this but just wanted to verify how the scores are calculated. Best HP from 3 dyno pulls, add together than get avg. Take that figure, multiply by 1000 then divide by the cubic inch of the engine. Is this correct?

NO ...
For the REC scores; (the EMC is different);
Best AVERAGE HORSEPOWER from 4,000 RPM to 7,500 RPM for the best 3 pulls. Times 1,000 divided by CID.

PEAK horsepower is not figured in the score anywhere.

If peak is between 4-7500, I believe it is figured into the score! Lol

Then it would suggest what is the incrementals to figure the 'average' HP numbers?
Every 100 RPM, 500 RPM, 1000 RPM?

John Wallace wrote: ↑Sun Oct 14, 2018 6:01 pm Then it would suggest what is the incrementals to figure the 'average' HP numbers?
Every 100 RPM, 500 RPM, 1000 RPM?

Every 100 RPM increments.

I bought Scott Mains 2nd place 400 block from emc a number of years ago and we went to do a clean up hone and the cylinders were so far out we had to open her up some more. The only running it had was test runs and emc. A ton of stress from what i seen. I beleive the any dyno runs are the hardest times a engine sees. My dyno operator always says he takes the best life out of everyone's engine.

Warp Speed wrote: ↑Sun Oct 14, 2018 3:57 pm

Walter R. Malik wrote: ↑Sun Oct 14, 2018 3:42 pm

For the REC scores; (the EMC is different);
Best AVERAGE HORSEPOWER from 4,000 RPM to 7,500 RPM for the best 3 pulls. Times 1,000 divided by CID.

PEAK horsepower is not figured in the score.

If peak is between 4-7500, I believe it is figured into the score! Lol
[/quote]

OK, sarcasm wizard, PEAK horsepower is merely 1/36 th of figuring the final score.

Steve.k wrote: ↑Sun Oct 14, 2018 6:28 pm I bought Scott Mains 2nd place 400 block from emc a number of years ago and we went to do a clean up hone and the cylinders were so far out we had to open her up some more. The only running it had was test runs and emc. A ton of stress from what i seen. I beleive the any dyno runs are the hardest times a engine sees. My dyno operator always says he takes the best life out of everyone's engine.

I remember the late great Joe Sherman saying about his winning engine that he did Many, many dyno runs in testing, then either refreshed or maybe put the whole combo into a fresh block for the Challenge.

I beleive Joe was on the right track. My own 436 we put 29 pulls on it testing various combos. Did the same as joe.That engine of Scotts was hard blocked to 1" below deck to. I couldn't believe how much that old block moved.Im sure these new blocks move less.

Walter R. Malik wrote: ↑Sun Oct 14, 2018 6:35 pm

Warp Speed wrote: ↑Sun Oct 14, 2018 3:57 pm

Walter R. Malik wrote: ↑Sun Oct 14, 2018 3:42 pm

For the REC scores; (the EMC is different);
Best AVERAGE HORSEPOWER from 4,000 RPM to 7,500 RPM for the best 3 pulls. Times 1,000 divided by CID.

PEAK horsepower is not figured in the score.

If peak is between 4-7500, I believe it is figured into the score! Lol

OK, sarcasm wizard, PEAK horsepower is merely 1/36 th of figuring the final score.
[/quote]

But still part of the figuring none the less!

Keith Morganstein wrote: ↑Sun Oct 14, 2018 6:38 pm

Steve.k wrote: ↑Sun Oct 14, 2018 6:28 pm I bought Scott Mains 2nd place 400 block from emc a number of years ago and we went to do a clean up hone and the cylinders were so far out we had to open her up some more. The only running it had was test runs and emc. A ton of stress from what i seen. I beleive the any dyno runs are the hardest times a engine sees. My dyno operator always says he takes the best life out of everyone's engine.

I remember the late great Joe Sherman saying about his winning engine that he did Many, many dyno runs in testing, then either refreshed or maybe put the whole combo into a fresh block for the Challenge.

I disagree. dyno time is probably the easiest time an engine gets.

Our 2011 short block has never been apart. Probably has 450 dyno pulls on it now. Been in my nova for some racing, been in my brother's dragster several times. Last time I had the heads off it still looked fine. Could still see the honing marks.

Our 2017 engine had well over 100 pulls on it, and it still looked fine when they tore it down after the contest. It got put right back together at the shop with no new parts but gaskets.

And if it's for a pulling truck, the dyno time will absolutely be the easiest time the engine sees.
Dyno time is a walk in the park compared to a season of pulling.


Randy

Truck pulling seems way harder on equipment than I've ever seen. Drag racing compared to dyno runs. Nope.