View Full Version : Mods Vs Dyno Numbers Vs Quarter Mile Times
Funky_Munky
17-03-2008, 12:41 PM
Yes, we all know this is a touchy subject and the thread is apt to get off topic very quickly. However, it can be a very useful and informative thread if people can keep this on topic.
As we all know, times on the quarter mile are contingent on a few other factors apart from just the power, namely weather conditions, driver ability, weight of car, etc. This is pretty much the reason Im asking the question as there is a lot of talk dyno figures being meaningless and the drag strip is where the car proves itself. Hopefully we can either confirm, or debunk that theory.
So Ill kick off.
VZ Clubsport (LS2)
1.75 inch 4 - 1 s/s headers, high flow cats and dual 2.5 inch s/s catback.
Standard power - 244rwkw
Power after exhaust - 258rwkw
Quarter Mile Time - unknown
I have plans to take it down to eastern creek, but generally dont have time to. Im very keen to confirm if the times Im running correspond with the power output of the car.
BLACKVE
17-03-2008, 12:49 PM
Can't help no dragstrip in adelaide:bawl::bawl::bawl::bawl:
Back on topic could be a good thread for every state except SA!
DaveHAT
17-03-2008, 01:11 PM
Regardless of what ET you get Faraz ... with 258rwkw I would expect your mp/h to be in the vicinity of 110mp/h for that sort of power.
vx ss 5.7
power steering , air cond , cruise control , full electics :rofl:
no seriously 2.5 di fillipo,walker high flow cats,try y pace makers,hot box pod filter set up, udp,918 springs 218 rwkw 13.1 at 108 mph 2.1 60ft
CarlFST60L
17-03-2008, 02:13 PM
Yeh, these threads certainly do go off topic quickly.
I have been following power/mod/et/mph closely for a while as its interesting to see such varied results around the place. And still so many people saying that cars are not making that power because the mph isnt high enough. Yes, ever time I go to the drags so many cars don't run 'the correct mph'. It seems to be taboo to talk about cars that don't make the mph for some reason :hide:
The best explanation I have found to date is in the time slip data base. We have it in a spreed sheet so we can graph everything. There is NO clear relationship between mph and rwkw UNLESS you include 60ft and weight in the equation. MPH is NOT constant to rwkw. If you do compare power / mph on cars with identical 60ft times and weights, then it is very clear and useful, but, taking a 1.9 60ft car and comparing it to even 1.8 60ft of two different weights is not valid. Let alone a 1.6 60ft and a 2.0 60ft car. Unless all those time slips are wrong :confused:
Im sure there are people that understand this much better than me.
Results from my cars:
Stock
VE R8
245kwrw
60ft: 1.95
ET: 13.5
MPH: 107mph
Weight: 1930kg
100% Factory
Baby cam, clutch, OTR, rip, springs
VE R8
~300kwrw
60ft: 1.93
ET: 12.4
MPH: 114mph
Weight: 1930kg
Factory trim other than power mod's
~6mph gained and ~60kwrw, 1.1 seconds off ET
Thats 1mph per 10kwrw @ 1930kg
VY SV8
210kwrw
60ft: 1.9
ET: 13.8
MPH: ~104mph
Weight: ~1650kg
VY SV8
edit, exhuast, and diff
235kwrw
60ft: 1.9
ET: 13.5
MPH: ~106mph
Weight: ~1650kg
ran on 19's
2mph gained and 25kwrw gained (also put 19's on)
VY SV8
OTR, clutch, edit, exhuast, and diff and some practice
235kwrw
60ft: 1.9
ET: 13.2
MPH: ~108mph
Weight: ~1650kg
ran on 19's
Another 2 mph gained
And thats how many times I have raced the black top, 5 times!
Red CV8 R
17-03-2008, 02:25 PM
I think this could be an interesting thread if it stays on topic. Thsi is my car:
V2 Monaro CV8-R Series III 6 speed Manual
Mods:
- Russo Mafless Tune
- HPF Alloy OTRCAI
- Ported stock TB
- DF SS Twin 2.5" exhaust
- CSV short headers
- Opened factory cats
- 3.9 diff gears
- Tein Coil overs
Dyno:
Stock - 169rwkw
Tuned - 228rwkw
1/4 Mile:
Best time - 13.0 @ 109 mph with 2.0 60ft
(street trim inc tyres, full weight and soft launch with no burn out)
bermudablue
17-03-2008, 02:37 PM
RWKW isnt the be all.At the moment i've got 265rwkw and a pb of
11.998@114.13mph.I can beat some cars with more power than me.
And have been beat by some cars pulling less power.
It's all about set up.
DaveHAT
17-03-2008, 02:40 PM
Regardless of what ET you get Faraz ... with 258rwkw I would expect your mp/h to be in the vicinity of 110mp/h for that sort of power.
I based this comment on my previous VTSS which had:
222/224 CAM
Pacemaker 1-5/8 tri-ys
Magnaflow CATS
ESA dual 2.5" catback
3.91 gears and tex clutch
Dyno with this setup = 253rwkw - 258rwkw depending on the dyno.
Best ET was 12.5 but mp/h was constantly low 110mp/h to high 111mp/h and all runs.
Car was run with the following changes made ... ET streets + spare/jack removed.
Weight = 1750kg with driver. Car setup has a lot to do with what number your car spits out at the end of the 1/4.
RED R8
17-03-2008, 03:07 PM
The problem is there is no definitive answer as some cars with average rwkw's can run mind blowing times because of great set up and some cars with great rwkw's run average ET's because of bad set ups...BUT I think the only fairly accurate measure of power will be MPH as good driver,bad driver,good set up, bad set up really affects your 60' but has little change on MPH, power on the other will affect MPH.
My VY SS
Mafless tune
HSV 4 into 1's
Xforce catback
OTR
3.9's
218 rwkws 12.9 @ 108 mph with 2.0 60'
Same car plus Pacie 4 into 1's plus cam =276 rwkws 12.0 @ 118mph 1.8 60'
VE R8
Mafless tune
CSV OTR
Xforce extractors and cats
264rwkws 13.2 @ 106 mph with a 2.0 60'
cdawg
17-03-2008, 03:44 PM
The problem is there is no definitive answer as some cars with average rwkw's can run mind blowing times because of great set up and some cars with great rwkw's run average ET's because of bad set ups...BUT I think the only fairly accurate measure of power will be MPH as good driver,bad driver,good set up, bad set up really affects your 60' but has little change on MPH, power on the other will affect MPH.
My VY SS
Mafless tune
HSV 4 into 1's
Xforce catback
OTR
3.9's
218 rwkws 12.9 @ 108 mph with 2.0 60'
Same car plus Pacie 4 into 1's plus cam =276 rwkws 12.0 @ 118mph 1.8 60'
VE R8
Mafless tune
CSV OTR
Xforce extractors and cats
264rwkws 13.2 @ 106 mph with a 2.0 60'
That dosent sound right? you changed the headers and gained 58 RWKW?
HSVJPL
17-03-2008, 03:48 PM
[QUOTE=CarlFST60L;1175475]
The best explanation I have found to date is in the time slip data base. We have it in a spreed sheet so we can graph everything. There is NO clear relationship between mph and rwkw UNLESS you include 60ft and weight in the equation. MPH is NOT constant to rwkw. If you do compare power / mph on cars with identical 60ft times and weights, then it is very clear and useful, but, taking a 1.9 60ft car and comparing it to even 1.8 60ft of two different weights is not valid. Let alone a 1.6 60ft and a 2.0 60ft car. Unless all those time slips are wrong :confused:
[QUOTE]
You are right and wrong.
There exists a real relationship between power, mph and weight as displayed using the Moroso power/speed calcualtor. Many hardcore drag racers swear by it's results and accuracy.
As you said it is useful to compare vehicles of similar weight and power and for most of us guys our street commodore will weigh about the same, hence easy comparison. (VE to VE, VX to VX)
I have found in my drag racing experience that 60ft time has a minimal effect on mph more on ET. When running stock as a rock a 2.6s or 2.1s 60ft would net the same mph.
Just my experiences, there are a lot of guys on here who have hundreds of runs on the board.
RED R8
17-03-2008, 03:48 PM
plus cam...
CarlFST60L
17-03-2008, 03:54 PM
set up really affects your 60' but has little change on MPH, power on the other will affect MPH.
Im looking at the graph of all of our 180 cars in the data base, and mph v rwkw vary by between 4mph everywhere, and up to 10mph for high powered cars! There is no consistency at all, unless you take someones mph and say +/- 5mph :lol:
If someone wants to, I will email a graphs of all 180 cars in our data base that clearly shows all of this info (to post them).
There are some interesting graphs of things like 60ft verses ET which is very good, it spells it out in black and white that 60ft is the only way to a good ET!!
subtle
17-03-2008, 03:54 PM
That dosent sound right? you changed the headers and gained 58 RWKW?
read it again mate its 4 into 1s plus cam .:)
CarlFST60L
17-03-2008, 03:57 PM
You are right and wrong.
There exists a real relationship between power, mph and weight as displayed using the Moroso power/speed calcualtor. Many hardcore drag racers swear by it's results and accuracy.
As you said it is useful to compare vehicles of similar weight and power and for most of us guys our street commodore will weigh about the same, hence easy comparison. (VE to VE, VX to VX)
I have found in my drag racing experience that 60ft time has a minimal effect on mph more on ET. When running stock as a rock a 2.6s or 2.1s 60ft would net the same mph.
Just my experiences, there are a lot of guys on here who have hundreds of runs on the board.
Agreed, but i said there is no relationship between MPH and RWKW, I did mention weight & 60ft need to be taken into account, which is 'useful'... But still, according to our data, we are talking +/- 4 mph and more in some cases.
Everything you said I agree with :)
RED R8
17-03-2008, 04:01 PM
Im looking at the graph of all of our 180 cars in the data base, and mph v rwkw vary by between 4mph everywhere, and up to 10mph for high powered cars! There is no consistency at all, unless you take someones mph and say +/- 5mph :lol:
If someone wants to, I will email a graphs of all 180 cars in our data base that clearly shows all of this info (to post them).
There are some interesting graphs of things like 60ft verses ET which is very good, it spells it out in black and white that 60ft is the only way to a good ET!!
Very true Carl if you improve your 60' by .1 your et will improve by even more than .1 without making more power..the 60' is the key to good ET's power will show in the MPH more so.
CarlFST60L
17-03-2008, 04:19 PM
Very true Carl if you improve your 60' by .1 your et will improve by even more than .1 without making more power..the 60' is the key to good ET's power will show in the MPH more so.
If we took into account weight, 60ft and power, then you could narrow it down to about +/- 2mph. But I certainly CBF working it out.
Just looking at cars with 290kwrw to 310kwrw
12.881@113.58 ~290kwrw
13.104@111.36
11.097@119.84
13.900@108.83
13.700@109.76
13.407@109.00
12.435@114.20 My 300kwrw R8
11.324@119.77
11.203@121.63
12.210@117.00
12.625@112.50
11.808@116.19
11.976@118.73
11.385@121.37 ~310kwrw
And here is 245kwrw to 265kwrw
13.535@107.98 245kwrw my R8
12.733@110.27
11.975@115.59
12.459@112.42
13.358@106.18
13.432@106.55
12.252@110.29
13.557@109.84
13.760@110.56
12.680@109.99
13.086@106.99
13.237@110.57
12.978@111.11
13.435@107.55
12.587@110.54
13.550@104.00
12.767@111.44
14.096@96.78
13.146@102.13
13.200@106.20
13.100@110.00
12.651@107.64
12.344@109.95
13.500@104.00
12.508@110.82
11.935@114.06 265kwrw
Wonky
17-03-2008, 04:39 PM
Or you could run 11.9@113mph... with 225rwkw :p
Who cares about the power... an 11 second car is faster than a 13 second car. Even if the 13 second car has a sheet of paper that says it has 150hp more!
Why do people care about dynos?
Do you want a fast car or a sheet of paper that says your car makes power?
Why do you mod your car?
To make it faster or more powerful?
Thats the answer :yup:
Yep, Markone2 is proof of that. Has run some amazing times with a supposedly low powered car (relatively).
markone2
17-03-2008, 04:43 PM
ET’s
SV8
Unopened 219rwkw Mafless / OTRCAI / Diff gears / 2800TC / Paccies and 2.5 Redback
……12.231@112.42mph…….August 2004 …….1.73 Launch
SV8 Cam Only 291rwkw …..6000TC / 4.11’s
11.006 @ 121.92mph……..1.488 Launch
SV8 Head & Cam 326rwkw….6000TC / 4.11’s
10.765 @ 126.01mph………1.469 Launch
Statesman WH.....BBB1
Unopened …..218rwkw Mafless / OTRCAI / 3.9’s / 4600TC / 25% UD / Full system
12.554 @ 107.53 mph …….1.695 Launch
Caprice WH11.....BBB2
Cam only 261rwkw Mafless / OTRCAI / 3.9’s / 4600TC / 25% UD / Full system ..2.5 cat back
11.649 @ 114.97 mph ……. 1.555 Launch
VU SS 6L Ute Cam only 328rwkw / OTRCAI / 3.9’s / 6000TC . / 4 to 1’s Custom 3”
10.926 @ 125.94mph……….1.639 Launch
And no Trailers :driving:
Wonky
17-03-2008, 04:49 PM
ET’s
SV8
Unopened 219rwkw Mafless / OTRCAI / Diff gears / 2800TC / Paccies and 2.5 Redback
……12.231@112.42mph…….August 2004 …….1.73 Launch
Yep, as I said above, even with stally and diff gears very few people would expect a 219rwkw car to do a 12.2!! :shock: No doubt driver skill plays a part too!
Wonky
17-03-2008, 04:59 PM
Forget it - misread something...... :doh:
bermudablue
17-03-2008, 05:08 PM
I reckon i got one of the lowest mph 11's...going around 11.998@114.13
CarlFST60L
17-03-2008, 05:09 PM
Or you could run 11.9@113mph... with 225rwkw :p
Who cares about the power... an 11 second car is faster than a 13 second car. Even if the 13 second car has a sheet of paper that says it has 150hp more!
Why do people care about dynos?
Do you want a fast car or a sheet of paper that says your car makes power?
Why do you mod your car?
To make it faster or more powerful?
Thats the answer :yup:
See, thats great numbers!
Is that 225kwrw through a stall?
Who wants power? Me (Well Torque anyway), I wanted that low down instant torque that makes the car soooo much fun to drive. If it was Auto, i would just want a bigger stall and bigger cam for top end.
I would prefer to drive a 12 second 400kwrw street trim car than a 11 second ET street car any day of the week. >125mph street trim is seriously fun, and its not about the 60ft which makes it 'quick'.
Another example of wanting 'power/torque'. I rolled on with a 245kwrw car (with a stall) from 70km/h. I rolled on in 3rd at about 3500rpm (or something like that), he pulled a half car as the stall flashed, then, I was pulling on him within a couple of seconds and was on him by 120km/h. Then the same thing again in but I started in second, I pulled a car length almost instantly and pulled another car length to 120km/h. It was great to see the additional torque/power playing its part ;)
Now imagine a 400kwrw car, that would have put both of us to shame even if he pulled from 3rd gear :lol:
My next goal is 400kwrw
So, yeah, power is good imho.
Nice thread, very informative.
I'd like to add, temperature/humidity would have a considerable effect on ET/mph.
markone2 you have/had some seriously fast cars there. What kind of differences have you noticed with varying weather conditions?
markone2
17-03-2008, 05:29 PM
Nice thread, very informative.
I'd like to add, temperature/humidity would have a considerable effect on ET/mph.
markone2 you have/had some seriously fast cars there. What kind of differences have you noticed with varying weather conditions?
Up to 5/10ths / 5mph difference at minus 16Deg when compared to 30Deg Temps and 1500 plus RA.....
Ie ...13 Deg / 40%H / 1030MB and minus RA is natures supercharger working overtime.....unfortuantly..most rare at Willowbank :bawl:
Wonky
17-03-2008, 05:29 PM
Or you could run 11.9@113mph... with 225rwkw :p
Sorry dadem0n, somehow missed that bit..... :doh: That would be very impressive!! You?
Wonky
17-03-2008, 05:36 PM
My old car plus MTs and Heathcoate weather :)
Excellent! :burnout:
markone2
17-03-2008, 05:38 PM
I reckon i got one of the lowest mph 11's...going around 11.998@114.13
Close....:)
http://i234.photobucket.com/albums/ee4/markone2LRC/147Launch.jpg
imho the ET is made or broken in the 1st 60ft
Moods
17-03-2008, 05:39 PM
I ran a 13.822 @168.80km/h with hi-tech headers and 2.25" cats only, in my M6 vy ss ute. Everything else stock.
Now the embarrasing part, 2.35 second 60 footers. I'd been in the manual for about 2 weeks. Whats the tip with launching hard in a M6?
SS346
17-03-2008, 05:48 PM
VT II Calais 218rwkw 12.07 111mph
VT II Calais 253rwkw 11.71 115mph
" " " 273rwkw 11.00 121mph
" " " 281rwkw 10.96 123mph
1735kg with driver mt drag radials
VY SS 277rwkw 11.33 118mph 1692kg mt drag radials
VY SS 229rwkw 12.11 115.53mph (unopened lol!) 1698kg mt drag raials
VXSS 288rwkw 11.00 122mph ?? mt dr's
VXSS 412rwkw 9.41 143mph about 1720kg iirc mt slicks
VXSS 282rwkw 11.5 118mph ?? mt dr's
V2 munro 288rwkw 11.2 120mph 1782 mt dr's
VXSS 269rwkw 12.0 117mph ??? mt dr's
V2 munro 392rwkw 11.4 131mph 1897kg mt dr's
Coupe 4 237awkw 12.7 112mph ???? street tyres
thats all i could be bothered digging up, thats same dyno (except for Coupe 4), same track.
Funky_Munky
17-03-2008, 05:49 PM
Innocent question here.....
Have any of you Sydney siders ever met Funky Munky? Is he real? :lol:
From:
Forum Myths vs Facts (tunes, exhausts, etc)
Mods Vs Dyno Numbers Vs Quarter Mile Times
My never ending quest for a new exhaust system...
The Australiana/Racism threads
etc
etc
etc
Is he a real guy or a troll? :lmao:
:lol:
I can see why some would think Im a troll, but no, Im not a troll. Well at least I dont think I am anyway.
Regarding my threads, I just happen to be very inquisitive in nature and also consider myself extremely thorough in everything I do. I like to get as much research done before jumping into any purchase, regardless of the product, hence all my threads about mods on cars and anything of that nature. Also, the exhaust thread was a thread on my new exhaust. I dont see an issue with that.
As for my posts about racism, I have extremely strong opinions and I was taught to voice my opinions regardless of the whatever reactions they may invoke. As such, I have no issues in getting into polemics with other members of this or any other forum.
Anyhow, to answer your question, I have met a few members of this forum. All of the members I met were great people and I like to think that they thought Im a decent guy too.
Cheers
PS I am curious to know what the threads the 'etc etc etc' represent.
PPS It might be worthwhile to add in the weight of the car and if the car was running slicks at the time as we all know those play a major role in the times that are acheived.
TUFFIE
17-03-2008, 06:20 PM
Vx exec M6, 250 rwkw
Mods.
OTRCAI,Maf tune,Pacy try Y's, 3.5 exhaust,3.9 gears, 1.8 rollers, PAC valve springs, RIP shift, Xtreme Brass button clutch.
suspension. King springs, pedders shocks.
13.2 @ 110 mph. Tyres RE55's.
chevy1
17-03-2008, 06:22 PM
Can't help no dragstrip in adelaide:bawl::bawl::bawl::bawl:
Back on topic could be a good thread for every state except SA!
I reckon this thread is gold for South Aussies ,so we can have a good go at the set-up before heading off to the track. Thanks guys ,see ya at Heathcote LS1 nationals next month on the hunt for my 11.
TUFFIE
17-03-2008, 06:27 PM
The fact you specifically used that term tells show much...
For your information, it comes from the Greek word polemikos which means warlike or hostile :rolleyes:
Have a nice discussion :)
:confused: :rofl: Show Much???? or So Much...:jester: However you do know what Polemikos means :bow: LOL funny stuff
Edit on times..
13.5 @ 110 mph with street tyres
13.2 @ 109 Mph with RE 55's
bermudablue
17-03-2008, 06:30 PM
Close....:)
imho the ET is made or broken in the 1st 60ft
not even close ay...lol...3500 is enough for me.I'm not prepared to give up
streetability.Or pay anymore money experimenting.
TUFFIE
17-03-2008, 06:49 PM
I think Im still drunk from yesterday :confused:
google LOL
Funky_Munky
18-03-2008, 09:04 AM
The fact you specifically used that term shows so much...
For your information, it comes from the Greek word polemikos which means warlike or hostile :rolleyes:
Have a nice discussion :)
There really should be a 'sigh' emoticon. Anyway, I dont even know why I bother getting into this, but here it is anyway.
http://i226.photobucket.com/albums/dd254/FunkyMunky01/Polemic.jpg
Have a nice discussion. :)
JustCruising
18-03-2008, 09:44 AM
dademOn... get yourself some of this if you are so concerned
http://i265.photobucket.com/albums/ii217/terrypng/trollspray-1.jpg
Nice thread Funky.
VESSWA
18-03-2008, 10:09 AM
There really should be a 'sigh' emoticon. Anyway, I dont even know why I bother getting into this, but here it is anyway.
http://i226.photobucket.com/albums/dd254/FunkyMunky01/Polemic.jpg
Have a nice discussion. :)
http://i264.photobucket.com/albums/ii172/dvh1966282/gay.jpg
Funky_Munky
18-03-2008, 10:55 AM
Nice thread Funky.
Cheers mate. :)
http://i264.photobucket.com/albums/ii172/dvh1966282/gay.jpg
:lmao: :lmao: :lmao:
Fark I laughed hard at that. Damn crazy Japs! :p
Anyways, can we please keep this thread on track. Any personal comments, can we please leave to a PM. Thanks guys.
ATTNSEEKR
18-03-2008, 11:22 AM
My VY SS ute
Mafless tune
pacemakers 1 3/4
2 1/2 cats and diffilipo 2 1/2" catback
Ebay OTR
3.9s
255rwkw, 12.8@109 stock clutch
Step2
Custom Camshaft with mafless tune
same pacies - FAST 90/90
twin 3" cats and difilipo 3" catback
Higs OTR - tex clutch - slicks
3.9s
287rwkw 11.38@120
VXSS346
18-03-2008, 12:28 PM
VXSS
Mods: Pacie try y's, HSV cats, DF twin 2.5" catback, CSV OTR, Mafless tune (Autotechnique)
Anywhere between 210-227rwkws. (depending on dyno) Prob more on a happy dyno :lol:
Full weight with stock 17" rubber (35psi), and 3.07's.
13.408 @ 105.47mph. (2.21 sec 60")
TAKEITEZ
18-03-2008, 04:04 PM
VY II HSV Maloo... 5.7 auto... all runs on stock stall, stock 3.07 diff gears...
Mods: Zero... bone standard...
199rwkw
13.89 @ 100mph... 2.3 60'
Mods: pacie tri-y, stainless substrate cats, twin 2.5 sureflo 'medium', MCAI + 2 hole mod
214rwkw
13.512 @ 105mph... 2.2 60'
Mods: as above + Chipmaster mafless tune & Alloy OTR, rear resonators removed from sureflo system... filter out
229.8rwkw
12.999 @ 108.56... 2.021 60'
all runs done on 19" nankang NS-2 tyres with stock suspension front and rear...
first two times done two weeks apart in WA... last time done a few months ago in TAS...
WOMBIE
18-03-2008, 04:31 PM
I'd been in the manual for about 2 weeks. Whats the tip with launching hard in a M6?
Get yourself a ripshift and some drag radials/slicks and launch hard at 6000rpm and remember to slip the clutch slightly and not just dump it.
Better still you can watch an m6 master in Dee Jay go about his work.
I just love this clip :)
http://www.ripshift.com/rip_videos/inside.wmv
Darren
Brett SS
18-03-2008, 04:41 PM
1999 VT II SS
Unopened: Difillipo twin 2.5" exhaust + 1 3/4" headers, TCI 3000rpm hi-stall, 3.73 diff gears
200rwkw
12.9@106.3mph, 1.73 60' on Hoosier 26x8" slicks (way back in 2002)
Head/Cam: Engine built by COME Racing, Difillipo twin 2.5" exhaust + 1 3/4" headers, TCS 4200rpm hi-stall, 3.91 diff gears, 233/233 cam, ported heads, valve springs, 84mm TB
245rwkw
12.1@112mph, 1.72 60' on Hoosier 26x8" slicks (back in 2003)
383 stroker: Engine built by COME Racing, Difillipo twin 3" exhuast + 1 7/8" headers, Yank 3800rpm hi-stall, 3.73 full spool, full fuel system, OTR intake, valve springs, 235/245 cam, ported heads, 84mm TB
316rwkw
10.9@125.5mph, 1.56 60' on M/T 26x10" slicks (back in 2004)
2004 VY II SV8
Unopened: Difillipo twin 3" exhaust + 1 3/4" headers, Dominator 4500 rpm hi-stall, 4.11 gears with KAAZ LSD, full fuel system, OTR intake, valve springs
248rwkw
11.7@114.6mph, 1.56 60' on M/T Drag Radials (last year)
CarlFST60L
18-03-2008, 04:49 PM
It seems that the Auto's make substantially lower power readings compared to the manuals (20/30%). Can someone explain what the difference are? My limited understanding of Auto's tell me that there isn't enough load from the dyno to get them to 'lock up' (I really don't know bugger all about Auto's)... Is this right? Can someone give some figures of the differences?
TAKEITEZ
18-03-2008, 05:08 PM
an auto, run on the dyno by an operator with the right software should be able to be locked in 3rd gear to eliminate kick down... and also have the torque converter clutch locked (if converter has one)....
auto's generally across the board pull less power...
there is a higher drivetrain loss through the auto box as a consequence of its design...
more specifics i'm not sure of... but its a common result...
Moods
18-03-2008, 06:15 PM
F*ck*ng Jesus christ. I launched at 3000rpm and slipped it a bit. Can the stock clutch handle that (6000)? What would happen if I did it from about 4800-5000 on street radials? Would I get a decent launch? I dont see the point in getting slicks until I get the tune intake done lol.
WOMBIE
18-03-2008, 06:40 PM
F*ck*ng Jesus christ. I launched at 3000rpm and slipped it a bit. Can the stock clutch handle that (6000)? What would happen if I did it from about 4800-5000 on street radials? Would I get a decent launch? I dont see the point in getting slicks until I get the tune intake done lol.
Stock clutch won't handle too many high rpm launches Moods i would not think,not to mention you would have massive wheel spin off the start line which is far from ideal and no fun when chasing quick times.
After only having been to the strip once i can tell you that with street radials,no major burnout is required.Next time i'm just driving around the waterline or a small chirp to clear the water from my tyres.A 2500rpm launch would be max for me next time out otherwise i just wheel spin and lots of it.Nice easy clean start and then get up it.
My best 60' was 1.998 and time of 12.6 @113 baby cam only,standard diff gears and with no actual setup to speak of.
Just practice mate and remember to always relax and have fun with it.I know i will and i'll be aiming for a 12.4 next time out before i go the drag radials.
Good luck with it mate :)
Darren
Moods
19-03-2008, 07:52 AM
So what sort of time should I be looking at with my setup? I'll sart spending some coin then shal I. Haha
WOMBIE
20-03-2008, 04:10 PM
So what sort of time should I be looking at with my setup? I'll sart spending some coin then shal I. Haha
Mate i'd recon 13.4-13.5 maybe,see how you go :)
As for spending some coin,i'd start off small and save for a cam ;)
Darren
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