Leicester RR Day - Interesting results......

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Sidewinder
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Re: Leicester RR Day - Interesting results......

Post by Sidewinder »

jimGTS wrote:pps, you saying the wheel power loss was roughly 50-60bhp????????


I know! I commented to Brook quite early on in the day about 60BHP being a high loss figure, but it appeared to be consistent with the tubbies as the day progressed. It works out (for me) to about a 21% power loss from flywheel to roadwheel...much higher than I expected.
Thankfully, I guess my loss of 53 BHP is probably the lowest of the tubbies, and is down to my Phoenix Power gearbox. Maybe. :D
Mk2 NA Rev1 -*- Mk2 Turbo Rev2 -*- Mk1 NA -*- Mk2 Turbo Rev 3 = all gone!
_______________________________________
"Cruisey, Sporty, more innovation, more adult. A Man In Dandism. Powered mid-ship specialty."
DannyW
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Location: Leicestershire

Re: Leicester RR Day - Interesting results......

Post by DannyW »

178.3 at the wheels for me, just trying to find a sharp enough knife to slit my wrists with now.................. :cry:
the_did

Re: Leicester RR Day - Interesting results......

Post by the_did »

188 ATW for me - doesnt sound as good as 242 though!
TBDevelopments

Re: Leicester RR Day - Interesting results......

Post by TBDevelopments »

yea that silver one, we sorted it out in the end found out to be fuel cut, reset it all and restored it to factory boost and got 150ish at the wheels, which is about right if you ask me :)

was a good day, was happy to hit the sack when i got in though. lol

Tim
xxxx
aaronjb
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Re: Leicester RR Day - Interesting results......

Post by aaronjb »

Ian Geary wrote:Not being pedantic or anything, but my engine bh/p was actually 254bh/p - I quoted the "corrected" figure of 247bh/p for some reason. Anyone know why the difference?


The "corrected" figures are your power figures corrected to the SAE standards. That is, that is the power that your car would make if it was run at the 'industry standard' air pressure, air temperature and humidity (as defined by the Society of Automotive Engineers). In other words, it's the figure you can compare between different days - since every dyno run is 'corrected' to the same figures, you remove the variables.

So when you dyno on a red hot day and show a much lower power figure, the 'corrected' figures should still match, since they remove the (large) variables of air temperature, pressure and humidity (all three of which affect oxygen per unit volume of atmosphere).

jimGTS wrote:weight has nothing to do with it IMHO, weight of the wheels anyway, geez, im sure the 0-10kg in difference in wheels doesnt matter to much considering you have over half a ton on the rear wheels anyway!


I would have thought the weight of the rotating masses involved would have an effect on how easily the engine power was transferred to the road, though - in that way, having lightweight wheels is just the same as fitting a lightweight flywheel (and we all agree that will help you rev more easily, right?).
Sidewinder
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Re: Leicester RR Day - Interesting results......

Post by Sidewinder »

DannyW wrote:178.3 at the wheels for me, just trying to find a sharp enough knife to slit my wrists with now.................. :cry:


Aw noooo! Just think of it as a minor glitch in your quest for more power! :wink:
Mk2 NA Rev1 -*- Mk2 Turbo Rev2 -*- Mk1 NA -*- Mk2 Turbo Rev 3 = all gone!
_______________________________________
"Cruisey, Sporty, more innovation, more adult. A Man In Dandism. Powered mid-ship specialty."
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

aaronjb wrote:

jimGTS wrote:weight has nothing to do with it IMHO, weight of the wheels anyway, geez, im sure the 0-10kg in difference in wheels doesnt matter to much considering you have over half a ton on the rear wheels anyway!


I would have thought the weight of the rotating masses involved would have an effect on how easily the engine power was transferred to the road, though - in that way, having lightweight wheels is just the same as fitting a lightweight flywheel (and we all agree that will help you rev more easily, right?).


guess your right, id had both lightweight volks, 16s, and lightweight rotas on my 2 runs at the RR sessions.................

saying that tho peeps, i hit 180whp hp at 8degrees, rusty exhaust 13psi (0.9bar) first time around,
and 200whp with nur spec, downpipe, stock 10degrees, greddy ic, colder plugs STILL at 13psi, (0.9bar), and ive a rev2....
i bloody WISH i could hold 15-16psi.........would be a good 20whp up on that for sure...
my figures at a different rr, were 200whp, 258fly, and 264 torque at 13psi...

very crazy peeps!! if you ask me!!
:-k
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

PPS, i heard rev1/2 tubbies are 165-170 bhp stock ATW!! should be 180whp tho giving the so called 220 fly jap cars....
rev3+ 200WHP stock!


really good to here of other RR days, as it just proves the tranny losses are around 17-22%, same as our SE RR days......

all good info if you ask me!!

mind you you luck buggers, you were running in freezing conditions, lol.
DannyW
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Re: Leicester RR Day - Interesting results......

Post by DannyW »

Nige wrote:
DannyW wrote:178.3 at the wheels for me, just trying to find a sharp enough knife to slit my wrists with now.................. :cry:


Aw noooo! Just think of it as a minor glitch in your quest for more power! :wink:


Hmm suppose...... ](*,)
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

DannyW wrote:
Nige wrote:
DannyW wrote:178.3 at the wheels for me, just trying to find a sharp enough knife to slit my wrists with now.................. :cry:


Aw noooo! Just think of it as a minor glitch in your quest for more power! :wink:


Hmm suppose...... ](*,)



mate, were the same spec really, i was disappointed with 200whp at 13psi, now, i can only asume if your actually holding 15-16psi to 5-5.5k something may be a miss, want to try and help you here, cause i look after my car like its my wife or something, bet your the same.....
you should be hitting more than that....
im only hitting 13psi peak because my turbo actuator is a little weak, im running 15psi, but only holding 13psi....
im doing the opposite im lead to belive, im actually running a little lean!!! now if your running a little rich, i personally would recommend an adjustable fuel pressure regualtor!! this is my next mod!!!
i think it should be yours as well fella!

what you think???

as i asume your car actually feels great, nice and smooth, no hesitation etc etc, just like mine, just missing some power from somewhere.....
(wheres that god dam power gone, lol)........
DannyW
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Re: Leicester RR Day - Interesting results......

Post by DannyW »

yes Jim, feels fine on the roads, can't really test it a the minute though, damn ice!

It's not just running a bit rich, its mega-mega rich (exact words of the RR operator) and it happens at exactly 5000rpm and above. which tells me the ECU can't cope with the extra boost and is just opening the injectors to 100%, checked for error codes and got nothing so it's not a sensor or anything gone down.

Next steps will be to replace plugs, dizzy cap and rotor arm then to get and fit a greddy emanage or similar.

Once all that is up and running properly, i'll fit my rev3 gearbox and Greddy TD06 turbo and downpipe.

Just need a serious cash injection, Damn christmas always gets in the way!!!
Dangerous
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Re: Leicester RR Day - Interesting results......

Post by Dangerous »

Well I just spoke to nod@thor and he reckons the dyno reading is all over the place (does look like mine was spinning up and hitting boost cut) therefor the the given reading on my dyno chart can be classed as INACURATE because of the lack of boost pressure measurment at the given peak power out put (he also said that mine was 300 @fly at 1Bar according to their figures
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

DannyW wrote:yes Jim, feels fine on the roads, can't really test it a the minute though, damn ice!

It's not just running a bit rich, its mega-mega rich (exact words of the RR operator) and it happens at exactly 5000rpm and above. which tells me the ECU can't cope with the extra boost and is just opening the injectors to 100%, checked for error codes and got nothing so it's not a sensor or anything gone down.

Next steps will be to replace plugs, dizzy cap and rotor arm then to get and fit a greddy emanage or similar.

Once all that is up and running properly, i'll fit my rev3 gearbox and Greddy TD06 turbo and downpipe.

Just need a serious cash injection, Damn christmas always gets in the way!!!


really strange, mate, what is it and these god dam rev1/2s, dam crap, lol (love em really, lol), rev3s dont appear to be getting mishaps like this......
i would personally check the leads, plugs, clean the dissy cap.....
make sure your running stock 10degrees.......also a very good idea if you still got it, to put the stock bov on, just to see mate....
i actually put on a blitz bov, and my car felt better!! madness really!
sod the ecu mate!!! thats mega bicks, sort out your fueling first!!
get a downpipe and use a afpr to sort out your fueling (get one with a guage)...then the turbo, then the ecu (or perhaps the last 2 at the same time).......
im not getting a piggyback or ecu for a while dude, im getting afpr first, then bigger turbo, then fuel rail, then pump, THEN maybe a ecu/piggyback!!
altho, all relative i suppose, all cars are different i guess......
Peter Betts

Re: Leicester RR Day - Interesting results......

Post by Peter Betts »

Dangerous wrote:Well I just spoke to nod@thor and he reckons the dyno reading is all over the place (does look like mine was spinning up and hitting boost cut) therefor the the given reading on my dyno chart can be classed as INACURATE because of the lack of boost pressure measurment at the given peak power out put (he also said that mine was 300 @fly at 1Bar according to their figures


I'm not sure about the hitting of boost cut as that would be a much more a violent spike. It is far more likely your car was spinning up and causing him problems so he part throttled it so he could complete the run. The other plot with the weird end shaping is pure roller break away as that's the same effect our Dynapack exibites when you hit a boost limiter or suffer clutch slip as the holding torque is reduced to compensate for the sudden lack of applied torque.

Nod.
Import

Re: Leicester RR Day - Interesting results......

Post by Import »

189rwhp for me, i've always read bhp as fly tbh
DannyW
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Re: Leicester RR Day - Interesting results......

Post by DannyW »

jimGTS wrote:
really strange, mate, what is it and these god dam rev1/2s, dam crap, lol (love em really, lol), rev3s dont appear to be getting mishaps like this......
i would personally check the leads, plugs, clean the dissy cap.....
make sure your running stock 10degrees.......also a very good idea if you still got it, to put the stock bov on, just to see mate....
i actually put on a blitz bov, and my car felt better!! madness really!
sod the ecu mate!!! thats mega bicks, sort out your fueling first!!
get a downpipe and use a afpr to sort out your fueling (get one with a guage)...then the turbo, then the ecu (or perhaps the last 2 at the same time).......
im not getting a piggyback or ecu for a while dude, im getting afpr first, then bigger turbo, then fuel rail, then pump, THEN maybe a ecu/piggyback!!
altho, all relative i suppose, all cars are different i guess......


piggyback will sort my fueling, that's the whole point of it Jim. tried the standard dump valve and made no difference. Timing is stock 10degBTDC.

The TD06 ive got has a downpipe with it too so im not getting a different one until i can afford to fit that one.

Just frustrating when you see standard cars getting such good results then mine which has had shedloads spent on it getting crap results. Nevermind though, onwards and upwards.
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

DannyW wrote:

Just frustrating when you see standard cars getting such good results then mine which has had shedloads spent on it getting crap results. Nevermind though, onwards and upwards.



no dude, dont think like that, i can appreciate your anger after a run, ive done 2 now at the same RR......
whos STOCK rev1/2 have your seen do those figures??? i havent heard of or seen recently a stock rev1/2 doing a power run, certainly not a "so called standard power", infact is there such a thing as a stock rev1/2 anymore, lol.......
mate, when you get those lovely bits of kit, you will be creaming your pants, cause youll probably total the car within 5 mins, lol!! (with shire excitment of super power).....ill be getting a bigger turbo soon, but i would say, my advice is to sort out your issues first, because you certainly wouldnt wona spend 500-1500 on a turbo and still not get the potential out of it!
O:)
Dangerous
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Re: Leicester RR Day - Interesting results......

Post by Dangerous »

DannyW wrote:
jimGTS wrote:
really strange, mate, what is it and these god dam rev1/2s, dam crap, lol (love em really, lol), rev3s dont appear to be getting mishaps like this......
i would personally check the leads, plugs, clean the dissy cap.....
make sure your running stock 10degrees.......also a very good idea if you still got it, to put the stock bov on, just to see mate....
i actually put on a blitz bov, and my car felt better!! madness really!
sod the ecu mate!!! thats mega bicks, sort out your fueling first!!
get a downpipe and use a afpr to sort out your fueling (get one with a guage)...then the turbo, then the ecu (or perhaps the last 2 at the same time).......
im not getting a piggyback or ecu for a while dude, im getting afpr first, then bigger turbo, then fuel rail, then pump, THEN maybe a ecu/piggyback!!
altho, all relative i suppose, all cars are different i guess......


piggyback will sort my fueling, that's the whole point of it Jim. tried the standard dump valve and made no difference. Timing is stock 10degBTDC.

The TD06 ive got has a downpipe with it too so im not getting a different one until i can afford to fit that one.

Just frustrating when you see standard cars getting such good results then mine which has had shedloads spent on it getting crap results. Nevermind though, onwards and upwards.


You and me both kid !!!!!
DannyW
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Re: Leicester RR Day - Interesting results......

Post by DannyW »

Ive got the petrol, you bring the matches,

WE GONNA HAVE A BBQ!!!

:twisted:

:lol:
:clown:
jimGTS
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Re: Leicester RR Day - Interesting results......

Post by jimGTS »

Import wrote:189rwhp for me, i've always read bhp as fly tbh


what fly fella????
i know fly sounds 10 time better than wheel hp, but how many "normal" peeps no about and "understand" wheel hp???? none!!! i can understand your reasoning, but in thw world of cars in this division, whp is what counts!!
i mean a 320fly coswerth had about 200whp!!! due to its 4wd tranny loses!!! think about that mate!!!!
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