SilverSoop Posted December 22, 2008 Share Posted December 22, 2008 Imo, looking at your spec, and your rwhp figures comapred to your flywheel hp figures, your dyno result isn't worth a wank. See if Charlie at SRR can tag you onto a RR day and get some better results, but make sure your car is tip-top or you're wasting your own time and money. Yeah that's what I thought... I will have to get a new gearbox and my new set of J-specs fitted first though like you say... When is the RR day?? Quote Link to comment Share on other sites More sharing options...
ClaireRZ-S Posted January 3, 2009 Author Share Posted January 3, 2009 (edited) Just a update on this thread. Decided to get the hub dyno/dyna pack done just to see the difference. Got 337whp and 377 at the fly and 377 lbs of Torque @ 1.1 bar boost seems like a good figure ill post up the dyno sheet shortly Edited January 3, 2009 by ClaireRZ-S (see edit history) Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 377bhp & 377 ft/lbs on a stock Supra (bar 1 CAT), or am I missing some mods? Quote Link to comment Share on other sites More sharing options...
ClaireRZ-S Posted January 3, 2009 Author Share Posted January 3, 2009 (edited) 377bhp & 377 ft/lbs on a stock Supra (bar 1 CAT), or am I missing some mods? Its almost bpu just the cat still in place. He ran in 5-6 times and figures were all within 2% tolerance of each other, bar the first run. Edited January 3, 2009 by ClaireRZ-S (see edit history) Quote Link to comment Share on other sites More sharing options...
supradriver Posted January 3, 2009 Share Posted January 3, 2009 Oh i'll definintely be doing it, when i got the car the 2nd decat was already in it. I got the 1st decat last week for bpu but last thing i need is the fuel pump and get the bits done together. I just wanted to see what the car was pushing out before i did any mods to it just to have a before and after. so what is the spec of it now? if i may ask. 2nd decat........ Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 Goes to show the differences between dynos, 1st 267rwhp, 345bhp, 320 ft/lbs 2nd 337rwhp, 377bhp, 377 ft/lbs I know there's always going to be a difference between a traditional dyno & a hub dyno (tyre losses etc), I wouldn't get too tied up with numbers and just concentrate on the arse dyno Quote Link to comment Share on other sites More sharing options...
ClaireRZ-S Posted January 3, 2009 Author Share Posted January 3, 2009 so what is the spec of it now? if i may ask. 2nd decat........ 18" Work Emotion CR Kai (bronze) Tein Coilovers HKS Si Exhaust 3" Decat 265/35/18 Potenza RE01R Iridium Plugs RPS Street Max 6puk Clutch HKS SSQV HKS Induction Blitz Dual SBC Blitz Turbo Timer Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 Goes to show the differences between dynos, 1st 267rwhp, 345bhp, 320 ft/lbs 2nd 337rwhp, 377bhp, 377 ft/lbs I know there's always going to be a difference between a traditional dyno & a hub dyno (tyre losses etc), I wouldn't get too tied up with numbers and just concentrate on the arse dyno One was run at 1bar the other at 1.1bar she forgot to mention that but has updated it since Quote Link to comment Share on other sites More sharing options...
supradriver Posted January 3, 2009 Share Posted January 3, 2009 18" Work Emotion CR Kai (bronze) Tein Coilovers HKS Si Exhaust 3" Decat 265/35/18 Potenza RE01R Iridium Plugs RPS Street Max 6puk Clutch HKS SSQV HKS Induction Blitz Dual SBC Blitz Turbo Timer the reason why i ask is because i would like my supra doing and mine is not far of the same spec as yours, just gives me an idea:d thanks for that:) Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 It actually pulls the VS kit off very well, I'm not normally a fan, but it looks very smart, I think it's the wheels that do it Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 The first one was a 22.5% tranmission loss, which is what an auto would be given tbh not a manual, 40bhp loss sounds more relistic than 78bhp. Basically he was less generous (10.5%) than the first guy ! Quote Link to comment Share on other sites More sharing options...
ClaireRZ-S Posted January 3, 2009 Author Share Posted January 3, 2009 It actually pulls the VS kit off very well, I'm not normally a fan, but it looks very smart, I think it's the wheels that do it Yeah its not too bad changing the front and putting on some spats so she'll have a new look soon. Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 (edited) The first one was a 22.5% tranmission loss, which is what an auto would be given tbh not a manual, 40bhp loss sounds more relistic than 78bhp. Basically he was less generous (10.5%) than the first guy ! That actually works against though as they measure the rwhp, so what you're saying is that the 1st one should have been 307bhp, if anything I think the 2nd guy is slightly more generous Scratch the above, this is why I hate talking about "made up flywheel figures" , the rwhp are the ones to go off & they are a mile apart Double Edit, again apologies I meant the 1st guy is slightly more generous Edited January 3, 2009 by jevansio (see edit history) Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 That actually works against though as they measure the rwhp, so what you're saying is that the 1st one should have been 307bhp, if anything I think the 2nd guy is slightly more generous Using 22.5% (337/100) = 3.77 x 22.5 = 75.8 making 337+75.8 = 412.8 fly Quote Link to comment Share on other sites More sharing options...
_Shane_ Posted January 3, 2009 Share Posted January 3, 2009 only rollers i would use in ireland is WCP in Kerry Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 http://www.mkivsupra.net/vbb/showpost.php?p=941301&postcount=26 Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 only rollers i would use in ireland is WCP in Kerry Same hub rollers IIRC, which I think are preset with % for most cars so figures should be the similar, havent heard of anyone having a car mapped with them either tbh so couldnt give feedback or get any hence Ill stay away. Seen robbies GTR today on the dyno aswell, 761.5 WHP ! Beast of a car. Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 Using 22.5% (337/100) = 3.77 x 22.5 = 75.8 making 337+75.8 = 412.8 fly Sorry bud,I got confused, again iterating why we should never get tied up in made up flywheel figures. The rwhp are the only figures worth talking about & they are a mile apart. Also your maths aren't techincally correct. A 22.5% loss is 22.5% off the flywheel figure, to reverse this calc you divide the rwhp figure by (100-22.5) = 77.5%. Therefore 337rwhp using a 22.5% loss is 337 / 77.5 * 100 = 434bhp flywheel Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 (edited) Sorry bud,I got confused, again iterating why we should never get tied up in made up flywheel figures. The rwhp are the only figures worth talking about & they are a mile apart. Also your maths aren't techincally correct. A 22.5% loss is 22.5% off the flywheel figure, to reverse this calc you divide the rwhp figure by (100-22.5) = 77.5%. Therefore 337rwhp using a 22.5% loss is 337 / 77.5 * 100 = 434bhp flywheel edit....confusing myself now Anyway just doing it quickly to illustrate my point, lower % is less generous ! Edited January 3, 2009 by Supra-Dupra (see edit history) Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 (edited) Would it not be 100% = 337 wheel horsies you get 22.5% then add it for fly !! Making a silly figure Thats not reverse calculating lol Edited January 3, 2009 by Supra-Dupra (see edit history) Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 edit....confusing myself now Anyway just doing it quickly to illustrate my point, lower % is less generous ! WTF are you on about , You said "Using 22.5%". You went onto tell me how to work out what 337 rwhp was at the flywheel. 412 fly you reckoned. That is wrong. I simply told you the correct way to work out a flywheel figure from the rear wheel figure. I'm not getting the 77.5 confused, I guess you are talking bhp when you are on about 267 with 77.5, my 77.5 is a completely different number, it's 100 - 22.5 and it's 77.5%, a percentage, not 77.5 bhp. And back to the original misunderstanding. The reason why I thought the first guy was more generous was that you said he used a 22.5% loss based on an auto. If he had used a figure for a manual the flywheel figure wouldn't have been anywhere near 345bhp he quoted, it would have been nearer 296bhp, that's why I thought he was being more generous, Clear now? Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 Quote Link to comment Share on other sites More sharing options...
jevansio Posted January 3, 2009 Share Posted January 3, 2009 Would it not be 100% = 337 wheel horsies you get 22.5% then add it for fly !! Making a silly figure Thats not reverse calculating lol No bud, that's not how you calc flywheel, if you wish I can take you through it with a simple example? Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 If he had used a figure for a manual the flywheel figure wouldn't have been anywhere near 345bhp he quoted, it would have been nearer 296bhp, that's why I thought he was being more generous, Clear now? Got ya, we were both right so just looking at it from different angles. Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted January 3, 2009 Share Posted January 3, 2009 No bud, that's not how you calc flywheel, if you wish I can take you through it with a simple example? Shoot. Quote Link to comment Share on other sites More sharing options...
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