View Full Version : RR dyno sheets posted now guys...
ibizacupra
20-01-2002, 23:04
A NEW post as the other one is MASSIVE... Wow! Are people interested in this stuff or what. Fastest growing thread so far.
anyway.......
After a lot of work, the dynos are scanned posted and a new website I have created to host them on... Busy weekend or what!
You wil find them at:-
http://www.badger-5.go-plus.net/
Enjoy. :)
The sequal to PS will be Stealth and Jabbasport.....
"Gentlemen Start Your Engines"
regards
Bill
Just browsing through all the plots and cant see anyone with a higher torque than 225 lb/ft?, my car only produced 170Bhp (225Lb/ft), but when i tested my car against Tadgers on the way home (80-110mph test) i pulled away fairly easily yet his car is showing 183Bhp (175Lb/ft) does this mean that Bhp has no meaning when trying to figure out whose car is faster?, I cant seem to figure out the relationship between Bhp and torque and how fast a car is going to be?, is there a formula to use?
ibizacupra
21-01-2002, 08:10
Originally posted by Mosser
Just browsing through all the plots and cant see anyone with a higher torque than 225 lb/ft?, my car only produced 170Bhp (225Lb/ft), but when i tested my car against Tadgers on the way home (80-110mph test) i pulled away fairly easily yet his car is showing 183Bhp (175Lb/ft) does this mean that Bhp has no meaning when trying to figure out whose car is faster?, I cant seem to figure out the relationship between Bhp and torque and how fast a car is going to be?, is there a formula to use?
You have sort of answered your question yourself.
Torque is the key.
The engine produces torque.
bhp is calculated from that torque and the rpm at which it is developed.
remember the formula bhp=(torque x rpm)/5252 where torque is in lb/ft units.
The higher torque engine will always pull away.
In gear acceleration will be faster in yours given the extra torque it produces. An excellent torque figure I would say :)
I have heard/read elsewhere where people describe area under the curve as a real discernable difference.. Peak torque figure which spikes is only good for the pub talk, the actual area under the torque curve is the bit that matters in real driving.
regards
Bill
Originally posted by Mosser
I cant seem to figure out the relationship between Bhp and torque and how fast a car is going to be?, is there a formula to use?
Mosser.....this should help (?)
http://www.seatcupra.net/power.shtm
Cheers Mik,
So once i get my car sorted out properly, my Bhp should return too then!, looks to me like heatsoak robbed the Bhp figures from a lot of people!, but doesnt explain why i was able to get a high torque reading with the upsolute chip?, especially with the faults that i currently have!!
It may be a chracteristic of the Upsolute chip that you get more Torque, my Oettinger produced 211lbft of torque.
Compare this to Fastshow's standard higher BHP car on the day ;) with 178lbft of torque.
I do think the standard cars had a better day though, the heatsoak obviously not as apparent when running lower levels of boost.
ibizacupra
21-01-2002, 13:16
Originally posted by Mosser
Cheers Mik,
So once i get my car sorted out properly, my Bhp should return too then!, looks to me like heatsoak robbed the Bhp figures from a lot of people!, but doesnt explain why i was able to get a high torque reading with the upsolute chip?, especially with the faults that i currently have!!
Compare you're torque and where it was developed in the rpm range... Early on I think I remember from the dynoplot.
Heat soak seemed to have set in frmo 4500rpm and all the modded cars suffered badly from then on as the ecu's went safe.
Remember the area under the curve comment. Thats the usable torque.
regards
Bill
ibizacupra
21-01-2002, 13:20
Originally posted by ZBOYD
It may be a chracteristic of the Upsolute chip that you get more Torque, my Oettinger produced 211lbft of torque.
Compare this to Fastshow's standard higher BHP car on the day ;) with 178lbft of torque.
I do think the standard cars had a better day though, the heatsoak obviously not as apparent when running lower levels of boost.
Anyone remember pumping up a bike tyre with a bike pump? It go very hot.. Compress a gas and it gets hots...
Higher boost, compressing the gas generates heat. Add to that combustion chambers that are getting very hot from being on full load... and heatsoak kills the power. Pumping hot gas into an already very hot combustion chamber. Ewwww!
Lower boost std motors, (typically 1/2 the boost) don't contribute this extra hot air being blown in.
Bill
Bill
Did you get my E-mail this morning. If not put me down for the Jabbasport session.
I also posted on the other forum about my problem. I think it was dodgy Optimax, as I refuelled with normal Esso unleaded on the way home and the car flies again as usual. Very disappointed with performance on Saturday although I dont know how much better it would have got without the pinking problem.
ibizacupra
21-01-2002, 13:36
Originally posted by whelme
Bill
Did you get my E-mail this morning. If not put me down for the Jabbasport session.
I also posted on the other forum about my problem. I think it was dodgy Optimax, as I refuelled with normal Esso unleaded on the way home and the car flies again as usual. Very disappointed with performance on Saturday although I dont know how much better it would have got without the pinking problem.
Yep - I got your email.
I would report the dodgy fuel station to Shell though if I were you. Probably water in their tanks !
Bill
Originally posted by ibizacupra
Yep - I got your email.
I would report the dodgy fuel station to Shell though if I were you. Probably water in their tanks !
Bill
I thought it unusual because I have been using them for a couple of weeks OK, cheers though.
bILL CAN YOU PUT MY NAME DOWN AS WELL