Irish Subaru Drivers Club Rolling Road Day!!!

[quote author=Scruff link=topic=19647.msg240198#msg240198 date=1259771262]
I could not care less about bhp figures as they are just for bragging rights down the pub. Torque is where the party is at and with 511 of them that's going to be one hell of a party!!! Justto put it into perspective. A full blown WRC car has approx 300bhp but it has nearly 900 party baloons. :653:
[/quote]

that's not true..It makes 600fltb but does that because it makes it at low revs...trucks can make 1500fltb of torque BUT between 500-1000 rpm..power is the result of torque applied at rpm... torque is only potential.
Wrc cars are restricted to 300 bhp so they make all the torque early and it tapers off as revs rise...any decent race car will make a progressive torque curve which only tapers of near the end of the rev range..making peak torque and power close together
 
[quote author=Dagnut link=topic=19647.msg240247#msg240247 date=1259788197]
[quote author=Scruff link=topic=19647.msg240198#msg240198 date=1259771262]
I could not care less about bhp figures as they are just for bragging rights down the pub. Torque is where the party is at and with 511 of them that's going to be one hell of a party!!! Justto put it into perspective. A full blown WRC car has approx 300bhp but it has nearly 900 party baloons. :653:
[/quote]



that's not true..It makes 600fltb but does that because it makes it at low revs...trucks can make 1500fltb of torque BUT between 500-1000 rpm..power is the result of torque applied at rpm... torque is only potential.
Wrc cars are restricted to 300 bhp so they make all the torque early and it tapers off as revs rise...any decent race car will make a progressive torque curve which only tapers of near the end of the rev range..making peak torque and power close together
[/quote]

I stand corrected, i could have sworn I read somewhere that they produced nearly 900ftlb of torque. anyway 511 of them in Dans car is very impressive.
 
511 lbs torque is some amount of pulling power lads....
Power is nothing without torque.... Nice progressive torque curves cost money but when ya got 1 ya know ya got a good engine...
 
your wrong again scruff, come on get the finger out

dan has a jeep, not a car!!!!!!!!

i really shouldnt say it as hes not around to defend it but he knows its only a joke!
 
I was correct after all!!

900party baloons =y2 + Ayw + Bw2 + Cy + Dw = f(x),
w2 + Ayw + By2 + Cw + Dy = f(a - x).=599ftlbs of torque
 
[quote author=DUFFMAN link=topic=19647.msg240256#msg240256 date=1259790566]
your wrong again scruff, come on get the finger out

dan has a jeep, not a car!!!!!!!!

i really shouldnt say it as hes not around to defend it but he knows its only a joke!
[/quote]

Beautiful Jeep tho :thumbsup:
 
[quote author=Scruff link=topic=19647.msg240253#msg240253 date=1259790102]
[quote author=Dagnut link=topic=19647.msg240247#msg240247 date=1259788197]
[quote author=Scruff link=topic=19647.msg240198#msg240198 date=1259771262]
I could not care less about bhp figures as they are just for bragging rights down the pub. Torque is where the party is at and with 511 of them that's going to be one hell of a party!!! Justto put it into perspective. A full blown WRC car has approx 300bhp but it has nearly 900 party baloons. :653:
[/quote]



that's not true..It makes 600fltb but does that because it makes it at low revs...trucks can make 1500fltb of torque BUT between 500-1000 rpm..power is the result of torque applied at rpm... torque is only potential.
Wrc cars are restricted to 300 bhp so they make all the torque early and it tapers off as revs rise...any decent race car will make a progressive torque curve which only tapers of near the end of the rev range..making peak torque and power close together
[/quote]

I stand corrected, i could have sworn I read somewhere that they produced nearly 900ftlb of torque. anyway 511 of them in Dans car is very impressive.
[/quote]

Yeah seriously Impressive as a said above if he would of been making that around 5000rpm its 480bhp potentail
 
[quote author=Scruff link=topic=19647.msg240257#msg240257 date=1259790624]
I was correct after all!!

900party baloons =y2 + Ayw + Bw2 + Cy + Dw = f(x),
w2 + Ayw + By2 + Cw + Dy = f(a - x).=599ftlbs of torque
[/quote]

Scruff you are correct but its 900 of those little Newton Meter party balloons which is approx 663 bhp. The wrc cars dont achieve this amount of torque without race fuel, anti lag and huge turbo pressure aprox 2.5 bar and above depending on which WRC manufacturer's engine you are talking about. Also the anti lag destroys the engine (esp the pistons) so after each race the engine needs a full rebuild. I have been in an Impreza WRC S11 and in comparisson to a certain 450 bhp evo I've also been in the S11 would eat it alive in every performance test.

BHP makes you fast down the straights, lightness makes you fast everywhere but torque makes you win races.

@Dan that is one serious machine you've got there. I hope Santa can fit the huge FMIC and pipework down the chimney this year!

Frawls
 
@dan

he was running 420bhp/450lb ft before..

by look graph is hitting 511 lb/ft torque only at 2900rpm but dropping very quickly 445lb/ft by 3850rpm. So does not tell realistic picture as this falls to 350 lb/ft torque by 4750rpm.. and 250lb/ft torque by 6750rpm..

dancda.jpg
 
[quote author=davelegacy link=topic=19647.msg242099#msg242099 date=1260756414]
@dan

he was running 420bhp/450lb ft before..

by look graph is hitting 511 lb/ft torque only at 2900rpm but dropping very quickly 445lb/ft by 3850rpm. So does not tell realistic picture as this falls to 350 lb/ft torque by 4750rpm.. and 250lb/ft torque by 6750rpm..

dancda.jpg

[/quote]

I noticed that too. Its a very strange torque curve no doubt caused by the TMIC not being able to keep charge temps in check as boost and rpms rise. I'm sure a FMIC and remap would flatten that torque curve nicely although I still think there's something not quite right with the dyno plot. How does a relatively small capacity (2.5) engine with a very big turbo set up make such massive torque so early in the rpm? Is the this one of those 3k titanium ball bearing twin scroll turbos?

Frawls
 
[quote author=davelegacy link=topic=19647.msg242099#msg242099 date=1260756414]
@dan

he was running 420bhp/450lb ft before..

by look graph is hitting 511 lb/ft torque only at 2900rpm but dropping very quickly 445lb/ft by 3850rpm. So does not tell realistic picture as this falls to 350 lb/ft torque by 4750rpm.. and 250lb/ft torque by 6750rpm..

dancda.jpg

[/quote]

Ah I see Ted that makes more sense..
 
[/quote]


I don't know much about Forrester's and peak power V torque but if he made 511fltbs at 5000rpm "potentially" depending on gearing and the load he could make 486bhp..It not that straight forward a calculation but I think thats where peak torque is made? any one got any graphs?
[/quote]

The magic number your on about is 5252rpm, so if he produced 511lb-ft at 5252 rpm, then that would be 511bhp also, if he could produce 511 lb-ft at 10504 rpm that would be 1022bhp, and so on....

I built a bike dyno a few years ago in college, this stuff was re-iterated again an again to try an fill a thesis! :icon_eyes:
 
[quote author=scoobienoobie link=topic=19647.msg243992#msg243992 date=1261500366]

[/quote]


I don't know much about Forrester's and peak power V torque but if he made 511fltbs at 5000rpm "potentially" depending on gearing and the load he could make 486bhp..It not that straight forward a calculation but I think thats where peak torque is made? any one got any graphs?
[/quote]

The magic number your on about is 5252rpm, so if he produced 511lb-ft at 5252 rpm, then that would be 511bhp also, if he could produce 511 lb-ft at 10504 rpm that would be 1022bhp, and so on....

I built a bike dyno a few years ago in college, this stuff was re-iterated again an again to try an fill a thesis! :icon_eyes:
[/quote]

As a bike mechanic I'd love to see your work on building a bike dyno! Would be a class project :thumbsup:
 
Just tried emailing you there at Scoobymaniac@live.com but it wouldn't send.

If you like send me your email address and I'll send you a few pics of it.
Im proud of it, although the software needs to be "user friendlyed" as it was developed in college using this software called Labview, which to be honest I still don't understand very well, and i developed it!


Edit: I know see that it should be Scoobymaniac@live.ie
 
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