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?
>
>> On Sep 2, 2018, at 4:13 PM, Mordy Dunst via Fot <fot at autox.team.net
>>
>> 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
>>
>> On?Sunday, September 2, 2018,?John Styduhar via
>>
>> What kind of modifications were done to the engine to extract
>> over 200 HP from a tractor engine? Nitrous shot.
>>
>>
>> On Sat, Sep 1, 2018 at 3:05 PM Thomas Boyd <tom at trenterprises.com
>>
>> 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/>
>>
>>
>> On 1 Sep 2018, at 17:02, John Styduhar via Fot
>>
>> 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.
>>
>>
>> On Sat, Sep 1, 2018 at 9:40 AM Terry Stetler via Fot
>>
>> Indeed there are Glen.
>>
>> Sent from Mail
>> <https://go.microsoft.com/fwlink/?LinkId=550986> for
>> Windows 10
>>
>>
>> ------------------------------------------------------------------------
>> *From:* Fot <fot-bounces at autox.team.net
>> fubog1 via Fot <fot at autox.team.net
>> *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-----
>> From: Bob Kramer via Fot <fot at autox.team.net
>> To: van.mulders.marcel <van.mulders.marcel at telenet.be
>> 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
>>
>> On Fri, Aug 31, 2018 at 12:43 PM,
>> <van.mulders.marcel at telenet.be
>>
>> 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
>>
>>
>> ------------------------------------------------------------------------
>> *Van: *"fot" <fot at autox.team.net
>> *Cc: *"fot" <fot at autox.team.net
>> *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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