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Old 15 March 2008, 09:19 PM
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Budgie
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Default rolling road question

what gear should this be done in
i thought it was
5 speed gearboxes in 3rd
6 speeds in 4th
answers and reasons why please

budgie
Old 15 March 2008, 09:28 PM
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Northern Nick
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It should be the gear with nearest to 1:1 ratio, which regardless off 5 speed and 6 speed is normally 4th gear.
Old 15 March 2008, 10:58 PM
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thanks nick
anyone else

budgie
Old 16 March 2008, 05:54 PM
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anyone
Old 16 March 2008, 08:24 PM
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Just out of interest, why do you ask?
Old 16 March 2008, 08:41 PM
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Budgie
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my car was dyno'ed yesterday
and i was suprised to find out after
that it was done in 3rd
other dyno days ive been to have been done in 4th
just wanted to know how this could effect my results
mine is a 6 speed

budgie
Old 16 March 2008, 09:11 PM
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Turbotits
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Originally Posted by peter budgen
my car was dyno'ed yesterday
and i was suprised to find out after
that it was done in 3rd
other dyno days ive been to have been done in 4th
just wanted to know how this could effect my results
mine is a 6 speed

budgie
weird you should say that peter. I had mine done yesterday and also in third. I thought the five speeds should be done in 4th and the 6 speeds in 5th to get the best 1:1 ratio
Old 16 March 2008, 09:12 PM
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JohnD
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Both times my STi has been on the rollers at Power Engineering, the run has been in 5th If in too low a gear, it may not be loaded enough to make full boost? Would 6th possibly overspeed the rollers? My SECS told me that max. boost was 19psi although I'd seen over 21psi on the road. Max. speed was 143mph
JohnD
Old 16 March 2008, 09:50 PM
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Budgie
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thanks for the replys guys
but we seem to be no nearer a definate answer
i know the reason is due to ratios of 1:1
but which gear is this?
Old 16 March 2008, 09:51 PM
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Aaron1978
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what did it make Budgie
Old 16 March 2008, 09:53 PM
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Originally Posted by azz250478
what did it make Budgie
thats the point arron
427/420
not very impressed

budgie
Old 16 March 2008, 10:04 PM
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Aaron1978
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that doesn't sound right mate, jgm is on here somewhere i've just been talking to him he'll know what gear it should be
Old 16 March 2008, 10:08 PM
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send him over here m8
would like another opinion
was expecting over 460
Old 16 March 2008, 10:44 PM
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Had my RA on the rollers 2 weeks ago and the car was run in 3rd gear and it didnt make full boost. The only reason i can think it didnt make full boost is because of low the ratios of RA box,it wasnt loaded enough..basically it should of been run in 4th.
Old 16 March 2008, 11:07 PM
  #15  
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i thought it was down to gear ratios
if you look at the spec pages
06 sti in 4th is 1.1 ish
06 wrx in 3rd is 0.97 ish
my96 ra in 5th is 0.96 ish
this to me is the gear they should be run in

budgie
Old 17 March 2008, 06:01 AM
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I had my scooby r/r'd at triton motorsport and it was done in 3rd they said it was because that is the power gear but i do make more boost in 4th 1.1 bar on the road due to the chip i have fitted but only made 0.94 in 3rd on the rollers.
Old 17 March 2008, 06:09 AM
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I had my scooby r/r'd at triton motorsport and it was done in 3rd they said it was because that is the power gear but i do make more boost in 4th 1.1 bar on the road due to the chip i have fitted but only made 0.94 in 3rd on the rollers.
Old 17 March 2008, 10:02 AM
  #18  
The Fixer
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Dyno Dynamics RR - Cars are run in 3rd gear.
Old 17 March 2008, 11:36 AM
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bigvern
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02 wrx done in third gear, made ok figures too.
Old 18 March 2008, 12:41 PM
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will depends on the RR rather than the car, the figures are only accertained by calculation, which can be different from RR to RR (as in make), due to how they are manufactured.

as said dyno dynamics are done in 3rd gear on most scoobs iirc
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