And before we get a bunch of email questioning the 5252 value, look at the
formula. P=T*R/5252. If R = 5252 then P=T*1.
> On Sep 4, 2018, at 2:07 PM, Bill <Bill at ponostyle.com> wrote:
>
> I?m being a bit facetious, I understand what people mean (sort of) but I?ve
> heard ?Horsepower wins sales, torque wins races.? and the equivalent spoken
> or written sagely, with solemn nods all around, too many times not to
> comment. One is a functional equivalent of the other, both in a mathematical
> and practical sense. The relationship is linear. Torque is force. Horsepower
> includes a circular distance component to express work.
>
> As you say, the numbers for the power and torque curves should equate at
> every point (adjusted by the function). The fact that they often don?t is
> ridiculous?horsepower measured by a dyno is calculated from torque and RPM,
> not directly measured. The shorthand bullshit detector for dyno curves
> expressed in Imperial units of ft-lbs and horsepower is to see if the curves
> cross at 5252 RPM. Many don?t, including those published in car magazines.
>
> Sheesh.
>
>
>>
>> P = T*R/5252
>> When people talk about a torquey engine, they usually mean it makes its
>> power a low revs.
>>
>> I once ran an engine on two different rolling road dynos (a Dynojet and a
>> Mustang Dyno. The guys at the dyno shop said the second one would give less
>> hp because they used a brake in their setup. I said, "you didn't calibrate
>> for that"? They backpedaled and gave me a line of BS. Then the power and
>> torque curves they produced did not agree with the equation. To get an
>> explanation, I worked my way up the chain and eventually talked to the dyno
>> companies head "technical" guy. He said he thought it must be the
>> calibration! I said, "it is basic physics, like saying F = ma". Since then,
>> I have never trusted dyno numbers. Good for comparative tuning runs only and
>> of course, bench racing.
>> - Larry
>>
>> On 9/2/2018 10:46 PM, Bill via Fot wrote:
>>> It always puzzles me when people say that. Horsepower is torque times RPM
>>> (and a conversion factor). Torque is horsepower/RPM. So how can one count
>>> more than the other?
>>>
>>>>
>>>> Its the torque that counts. So, I suspect the motor enhancements took the
>>>> benefit of the tractor stroke. If the motor is able to produce that
>>>> power at 6k rpm with shift at 6500.
>>>> I shift at @ 6200 - my motor produces max power @5800 on the dyno. I use
>>>> a kastner designed cam for which I have the masters.
>>>>
>>>>
>>>>
>>>> MDunst Headgasket.com <http://headgasket.com/> 626.358.1616
>>>> <tel:626.358.1616>
>>>> Fax 626.628.3777 <tel:626.628.3777>
>>>> Triple R Munitions, Inc 626.201.9471 <tel:626.201.9471>
>>>> T FFL 6,7 SOT 2
>>>>
>>>>
>>>> What kind of modifications were done to the engine to extract over 200 HP
>>>> from a tractor engine? Nitrous shot.
>>>>
>>>>
>>>> All of our FIA race cars are running legal 87mm engines.
>>>> Just rolling roaded the latest SLR build at well north of 200bhp
>>>>
>>>> Thomas Boyd
>>>> Director
>>>> TR Enterprises
>>>> 01623 793807 (ext 302) <tel:01623%20793807;302>
>>>> www.trenterprises.com <http://www.trenterprises.com/>
>>>>
>>>>
>>>>
>>>> If you really had serious compliance with most group's rules, I would
>>>> guess half the TR cars would not pass muster. Let's have fun together.
>>>>
>>>>
>>>> Indeed there are Glen.
>>>>
>>>>
>>>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>> Windows 10
>>>>
>>>>
>>>> Sent: Saturday, September 1, 2018 7:34:26 AM
>>>> Subject: Re: [Fot] 89MM piston question
>>>>
>>>> everybody else seems to be using 89.
>>>> HaHa not everybody, rules say 87mm, there are still a few guys running
>>>> them (and winning)...
>>>> Glen
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> Sent: Fri, Aug 31, 2018 11:26 pm
>>>> Subject: Re: [Fot] 89MM piston question
>>>>
>>>> I've always used 87 MM due to the rules but everybody else seems to be
>>>> using 89. The procedures are the same so It'll be the same. I blew a head
>>>> gasket last time out, compression into the cooling system and blew off the
>>>> bottom hose. I guess it wasn't tight enough, and scuffed two pistons
>>>> before I could shut it down.
>>>>
>>>> Bob Kramer
>>>>
>>>> Bob,
>>>> It is definitely necessary to make that modification to the liners. The
>>>> relieve should correspond to the shape of the combustion chambers : about
>>>> 4 mm wide on a 89mm engine.
>>>> Marcel
>>>>
>>>> Verzonden: Donderdag 30 augustus 2018 00:05:43
>>>> Onderwerp: [Fot] 89MM piston question
>>>>
>>>> Do the guys running the 89MM pistons and liners need to relieve the liners
>>>> to clear the intake valve, or does the extra MM make the difference?
>>>>
>>>> Bob Kramer
>>>>
>>>> On Tue,
>>>>
>>>> _______________________________________________
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>>
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>
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