Post your dyno curve here
Discussion
ChilliWhizz said:
I may be wrong, but I've yet to see a dyno with more than 360bhp from a NA 500.... 
Now if a 500 can produce 360 brake then a 550 should produce 396 brake if all was equal.Mine only produces 385 so with a solid cam I should be there.
BTW, I recently found that out of the 3No carbon fibre trumpets in the neck of my triple plenum, 2 has come out and were rattling about in the inlet in front of the TBs!
So should be a few more BHP there then
Bobby Shaftoe said:
semaj said:
That's losing 60bhp through the transmission???!!!! Something wrong there surely!
Probably not far off, seems to be about right for dyno dynamics rolling road. Mine was 216 wheels / 270 fly, so 54 hp losses. Apparently it's to do with the smaller diameter rollers giving much higher tyre losses than other brand dynos or summat. db484bhpv8 said:
at a dragstrip 
Rolling raod figures are all over the place... especially when it comes down to calculated flywheel figures.
True, but surly the dragstrip isn't 100%, strong tail wind = a better terminal and a strong head wind = a lower terminal, + some drag strips seem to get better results then others? plus gearing etc....Rolling raod figures are all over the place... especially when it comes down to calculated flywheel figures.
Miss VXTamora said:
db484bhpv8 said:
at a dragstrip
Rolling raod figures are all over the place... especially when it comes down to calculated flywheel figures.
True, but surly the dragstrip isn't 100%, strong tail wind = a better terminal and a strong head wind = a lower terminal, + some drag strips seem to get better results then others? plus gearing etc....Rolling raod figures are all over the place... especially when it comes down to calculated flywheel figures.
On similar days weather wise and on any drag strip your terminal speeds should be a very good indication of BHP for a given kerbweight. People that go to RWYB will notice most of there terminal speeds are within a mph or 2 but the ET could be all over the place due to wheelspin at the startline etc.
Gearing can have some effect on the terminal speed but will be a constant for that car.
Basically if you return to a dragstrip and you are slower through the trap then you either have less power or the winds in your face
With 329 bhp terminal = 113 at best, with + 170 nitrous = 129
db484bhpv8 said:
True the wind can have a big effect.
On similar days weather wise and on any drag strip your terminal speeds should be a very good indication of BHP for a given kerbweight. People that go to RWYB will notice most of there terminal speeds are within a mph or 2 but the ET could be all over the place due to wheelspin at the startline etc.
Gearing can have some effect on the terminal speed but will be a constant for that car.
Basically if you return to a dragstrip and you are slower through the trap then you either have less power or the winds in your face
With 329 bhp terminal = 113 at best, with + 170 nitrous = 129
Agree with all that.On similar days weather wise and on any drag strip your terminal speeds should be a very good indication of BHP for a given kerbweight. People that go to RWYB will notice most of there terminal speeds are within a mph or 2 but the ET could be all over the place due to wheelspin at the startline etc.
Gearing can have some effect on the terminal speed but will be a constant for that car.
Basically if you return to a dragstrip and you are slower through the trap then you either have less power or the winds in your face
With 329 bhp terminal = 113 at best, with + 170 nitrous = 129
Look at the consistency of the last 3 runs.
Is that one of those crate LSA engines ? must of been a tight fit .Did you do the conversion .
https://www.youtube.com/watch?v=i9wRx1tqHic
https://www.youtube.com/watch?v=i9wRx1tqHic
Edited by SILICONEKID345HP on Sunday 16th November 00:18
The car was built by Sportmotive using there evolution chassis which is wider and stronger making the crate LSA engine a good fit. The Dyno stops where it does as we hit the Rev limiter and I didn't see much point in raising it as with so much torque coming in low down I never need to take it above 4000 anyway. I will try to load some better photos later of the installation, but these were taken during build.
MarkTVRchim said:
The car was built by Sportmotive using there evolution chassis which is wider and stronger making the crate LSA engine a good fit. The Dyno stops where it does as we hit the Rev limiter and I didn't see much point in raising it as with so much torque coming in low down I never need to take it above 4000 anyway. I will try to load some better photos later of the installation, but these were taken during build.
Thats a beautiful build and awesome power, but I must ask ... why? Shirley a 6.2 chim will be mental, uncontrollably fast, let alone the supercharger?
must be hilarious to drive 
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