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Author Rolling road results from yesterday.... (with pics of graph)
Dan
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Registered: 22nd Apr 02
Location: Gorleston on Sea, Norfolk
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14th Jul 05 at 09:01   View Garage View User's Profile U2U Member Reply With Quote
As some of ya know i went to have my car rolling roaded yesterday...

me and a mate with a williams clio engine converted 1.8 16v clio went along,

all week he has been telling me how his clio will piss all over my xe corsa, and i started to belive him when i went out in his.

on the way there he decided to boot it from a roundabout so i followed, and i sat on his back bumper throttling off till about 90.

he is extremaly pissed off due to this.

but any ways, got to the rolling road and they put car on rollers, only to find the front bumper hit the rollers, so we had to take it off.

then he ran it up, i couldnt belive the sound, it was so loud!!!

my spec is, c20xe (fully rebuilt) 2 1/4in full stainless powerflow system, indction kit.

i hit a whopping 171.1bhp with 160lbs/ft

heres the graph..





im well chuffed


Dan

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14th Jul 05 at 09:03   View User's Profile U2U Member Reply With Quote
So its not fucked then?

Well done btw
AK
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14th Jul 05 at 09:08   View User's Profile U2U Member Reply With Quote
take that reading with a pinch of salt.....
Skinz
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14th Jul 05 at 09:11   View User's Profile U2U Member Reply With Quote
yes, 90% of rolling roads over calibrate to make the customer feel they have achieved something, plus things like air pressure and temp on teh day make things diff, what did estimate transmission loss to be?
James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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14th Jul 05 at 09:11   View User's Profile U2U Member Reply With Quote
and the graph too, power curve is a little liner esp compaired to the torque curve generated. the important thing to take away from it is it's a healthy engine.
Dan
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14th Jul 05 at 09:14   View Garage View User's Profile U2U Member Reply With Quote
my mates clio hit 153, at a different place hit 155 it should b 150, so id say they aint too bad

the loss through transmission is 32.6hp

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Skinz
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14th Jul 05 at 09:17   View User's Profile U2U Member Reply With Quote
ahh thats why then 16% transmission loss, should be about 25% trans loss, which would give you 153bhp which is more realisitic
AK
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14th Jul 05 at 09:26   View User's Profile U2U Member Reply With Quote
more like 18.9 or so

20 - 25% is 'normal'

Wheel power id the only stat worth looking at though to be honest....

so 138.5 bhp
Skinz
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14th Jul 05 at 09:27   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Adam Kindness
more like 18.9 or so

20 - 25% is 'normal'

Wheel power id the only stat worth looking at though to be honest....

so 138.5 bhp


i did the calculations using windows calculator and rounded everything up
Dan
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Registered: 22nd Apr 02
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14th Jul 05 at 09:29   View Garage View User's Profile U2U Member Reply With Quote
its actually 138.4 bhp

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AK
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14th Jul 05 at 09:30   View User's Profile U2U Member Reply With Quote
skinz.... think you are confused

More transmission loss = higher 'estimated' flywheel reading

25% loss would give 184bhp
Dan
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14th Jul 05 at 09:34   View Garage View User's Profile U2U Member Reply With Quote
stats from bottem of graph..

engine power (measured) - 171.1bhp @ 102mph/5865 1/min

wheel power (measured) - 138.4bhp @ 102mph 5865 1/min

power losses (measured) - 32.6bhp @ 102 mph / 5865 1/min

engine power (corrected) 170.8bhp @ 102 mph / 5865 1/min

torque (corrected) 160lbs/ft at 5535 1/min



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AK
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14th Jul 05 at 09:34   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dan
its actually 138.4 bhp


171,1 - 32,6 = 138,5
Dan
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14th Jul 05 at 09:37   View Garage View User's Profile U2U Member Reply With Quote
thats true... i just went by what it said on he bottom bit

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AK
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14th Jul 05 at 09:43   View User's Profile U2U Member Reply With Quote
Was it a 3rd gear run?

na.... looking at your speed at 5.8k rpm it wouldnt be unless you dont have a F20cr
vibrio
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14th Jul 05 at 10:16   View User's Profile U2U Member Reply With Quote
its the sudden increase in torque at the end that looks a bit funny. also is the torque curve of an XE not a bit flatter?
Dan
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14th Jul 05 at 10:18   View Garage View User's Profile U2U Member Reply With Quote
nah was a 4th gear run..im new to all this print out stuff btw

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James R
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14th Jul 05 at 10:19   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by vibrio
its the sudden increase in torque at the end that looks a bit funny. also is the torque curve of an XE not a bit flatter?


Will not have the normal midrange torque do to the SFi box being removed.
Fad
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14th Jul 05 at 10:20   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by vibrio
its the sudden increase in torque at the end that looks a bit funny. also is the torque curve of an XE not a bit flatter?


should be flatter looks well linear as mentioned before. Althought did you say your mate got around the 150 bhp mark? which is the norm for a clio Williams so cant be that far off the truth I guess?
AK
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14th Jul 05 at 10:32   View User's Profile U2U Member Reply With Quote
without the SFi box the torque changes....

less peak, but wider 'curve'

so more constant torque higher up the revs..... ken... giving higher bhp..


BHP = rpm*torque/5252
AK
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14th Jul 05 at 10:33   View User's Profile U2U Member Reply With Quote
.... above's torque curve looks more like a BHP plot
mav
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14th Jul 05 at 16:12   View User's Profile U2U Member Reply With Quote
171 and you thought it was fecked..............

puts my 152 to shame if it's accurate
LukeGSi
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14th Jul 05 at 19:02   View User's Profile U2U Member Reply With Quote
Not quite sure about the power reading to be honest, seems a wee bit high but I certainly don't think there is anything wong with the engine....just the girly driver

I think I like his clio tho It's French
Dan
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Registered: 22nd Apr 02
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15th Jul 05 at 12:35   View Garage View User's Profile U2U Member Reply With Quote
his clio is for sale lukas...

i still had him on the way home

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Dan
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15th Jul 05 at 12:36   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by LukeGSi
Not quite sure about the power reading to be honest, seems a wee bit high but I certainly don't think there is anything wong with the engine....just the girly driver

I think I like his clio tho It's French


thats really rich...

his golf must have been fooked with lukas..

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