Mad Rod back at the dyno today
#481
*** Sierra RS Custard ***
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Stav, it was revving up quickly through the rev range and making boost as it went, Id say in fact that on most of the runs the revs were going up QUICKER than they would in 4th or 5th gear.
But yes for held figures, that is of course true, you can give the turbo ages to spool, which would only happen on a hill in a high gear normally.
The thing they seemed to have missed somewhat though, is that if you are in a high gear and off boost, the revs wont rise anyway, as its got not torque till its on boost, lol
So basically IMHO their points are potentially very valid, but in this instance the dyno wasnt holding back, particularly on the run where we did the power curve, the whole run took only a few seconds.
But yes for held figures, that is of course true, you can give the turbo ages to spool, which would only happen on a hill in a high gear normally.
The thing they seemed to have missed somewhat though, is that if you are in a high gear and off boost, the revs wont rise anyway, as its got not torque till its on boost, lol
So basically IMHO their points are potentially very valid, but in this instance the dyno wasnt holding back, particularly on the run where we did the power curve, the whole run took only a few seconds.
#482
1st to 200 without NOS
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Pail Blamire from Zen Performance (ie the batshit fast Impreza Time Attack car etc) made an interesting post I jus noticed though, but its way over my head with regard to how dynos work, so needs some expert commentary, or maybe Sheady or someone to reply on there...
It's worth noting the results for ROd's engine come from an engine dyno where you can hold the RPM until the boost rises. Unless you hold it on the brakes you're not going to see those torque levels at 4500rpm with normal driving.
Basically saying its working as a transbrake, and just like a transbrake you get tons more spoolup, and i mean tons, than you would normally. Wether thats true or not, dunno, i dont have a clue about dynos.
Then Robbie from R.I.P.S. (ie legendary NZ Skyline tuner replied with...
I was thinking there'd have to be something like that going on but didn't want to start anything.
I think it would be a pretty safe bet to say that if he drove along in 4th gear at 4000rpm and nailed it, not alot would happen for quite some time.
Rob
Does Sheady or someone wanna reply on there to explain? I know fook all about dynos to know what the trusth is.
It's worth noting the results for ROd's engine come from an engine dyno where you can hold the RPM until the boost rises. Unless you hold it on the brakes you're not going to see those torque levels at 4500rpm with normal driving.
Basically saying its working as a transbrake, and just like a transbrake you get tons more spoolup, and i mean tons, than you would normally. Wether thats true or not, dunno, i dont have a clue about dynos.
Then Robbie from R.I.P.S. (ie legendary NZ Skyline tuner replied with...
I was thinking there'd have to be something like that going on but didn't want to start anything.
I think it would be a pretty safe bet to say that if he drove along in 4th gear at 4000rpm and nailed it, not alot would happen for quite some time.
Rob
Does Sheady or someone wanna reply on there to explain? I know fook all about dynos to know what the trusth is.
Stav, Paul is spot on you can produce good figures like that. I was going to make the observation myself but didn't want to start tuna wars!!
Last edited by Martin-Hadland; 08-08-2008 at 11:56 AM.
#483
DEYTUKURJERBS
I've no clue about all this stuff, but prob good for Mark to go on there and clarify it.
Depends how it is set really. Thats how transbrakes work on race autoboxes. Engages 1st and reverse at the same time, welly to the floor, hold it long enough (ive seen cars take 30secs to spool up sitting on the transbrake at low rpm, but they do in the end! ) and anything spools up from anywhere pretty much.
Obv that only works from a standstill, but the principle potentially the same is the same.
Few transbrake videos for you Euan (i had some awesome Supra ones, but cant find the good ones now)
http://www.youtube.com/watch?v=lB2qsj4Tzm0
http://www.youtube.com/watch?v=9mdTcRuJpuk
http://www.youtube.com/watch?v=nnppPlVw-sI
http://www.youtube.com/watch?v=AoV4gKt6z24
(The third one is a good example of it can take AGES, but gets there in the end. 30sec or so in that vid, as no nitrous and the transbrake holding the revs too low to spool fast without the gas on)
Obv that only works from a standstill, but the principle potentially the same is the same.
Few transbrake videos for you Euan (i had some awesome Supra ones, but cant find the good ones now)
http://www.youtube.com/watch?v=lB2qsj4Tzm0
http://www.youtube.com/watch?v=9mdTcRuJpuk
http://www.youtube.com/watch?v=nnppPlVw-sI
http://www.youtube.com/watch?v=AoV4gKt6z24
(The third one is a good example of it can take AGES, but gets there in the end. 30sec or so in that vid, as no nitrous and the transbrake holding the revs too low to spool fast without the gas on)
Last edited by Stavros; 08-08-2008 at 12:02 PM.
#487
#488
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#490
You cant take pressurised cylinders across on the ferry, so there is an immediate hassle.
Getting gas here is also another difficulty.....I know of one place that offers it....I wouldnt buy from them though.
And then there is the risk of solenoids failing....intake explosions, and various other common problems associated with it.
You cant say they arent common, as Ive seen more than a few manifolds blown apart from it on other peoples cars.
Then you also have to consider.....a bottle with a decent sized shot doesnt last very long.
So as far as I see it, it simply isnt worth it. As I mentioned earlier, I'm not racing anyone other than myself. So I dont particularly care if I dont win TOTB, I dont enter any real competitive racing, as it simply isnt feasable for me to take part given distance and cost involved.
My car is purely for my own enjoyment.....I want it to go faster, but I dont want to rely on a small temporary bottle for that.
I want any power that I have, available any time I want it.
Almost every time I drive it, I learn that there are many areas where there is room for improvement....so I'll continue to work on those.
#492
RW
#493
Its all easy to say that.
My car is purely for my own enjoyment.....I want it to go faster, but I dont want to rely on a small temporary bottle for that.
I want any power that I have, available any time I want it.
Almost every time I drive it, I learn that there are many areas where there is room for improvement....so I'll continue to work on those.
My car is purely for my own enjoyment.....I want it to go faster, but I dont want to rely on a small temporary bottle for that.
I want any power that I have, available any time I want it.
Almost every time I drive it, I learn that there are many areas where there is room for improvement....so I'll continue to work on those.
Cheers
RW
#497
and seeing as the firing order is the different from the corvette then its deff a vauxhall engine
iirc or cause
#500
when i was in australia i was chatting to a bloke about the ls series
and he was telling me that holden changed the firing order of the corvette engine to make it run smoother and give better emmisions ( not sure how it would change emmisions thou lol )
and he was telling me that holden changed the firing order of the corvette engine to make it run smoother and give better emmisions ( not sure how it would change emmisions thou lol )
#501
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#502
i am an absolute noob, so feel free to ignore me...
but arnt wrc cars an engines far more restricted than the engine in question?
And millingtons only usually produce about 300hp, and some more torques, so i think the engine in question is slightly outside the limits of what others have done?
but arnt wrc cars an engines far more restricted than the engine in question?
And millingtons only usually produce about 300hp, and some more torques, so i think the engine in question is slightly outside the limits of what others have done?
#503
*** Sierra RS Custard ***
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i am an absolute noob, so feel free to ignore me...
but arnt wrc cars an engines far more restricted than the engine in question?
And millingtons only usually produce about 300hp, and some more torques, so i think the engine in question is slightly outside the limits of what others have done?
but arnt wrc cars an engines far more restricted than the engine in question?
And millingtons only usually produce about 300hp, and some more torques, so i think the engine in question is slightly outside the limits of what others have done?
high comp
big midrange boost
massive amounts of timing
very det resitant fuel
so they are still quite relevant in many ways.
#504
PassionFord Post Whore!!
The thread on GTR forum is still going it seems-
http://www.gtr.co.uk/forum/101217-72...4500-good.html
Pail Blamire from Zen Performance (ie the batshit fast Impreza Time Attack car etc) made an interesting post I jus noticed though, but its way over my head with regard to how dynos work, so needs some expert commentary, or maybe Sheady or someone to reply on there...
It's worth noting the results for ROd's engine come from an engine dyno where you can hold the RPM until the boost rises. Unless you hold it on the brakes you're not going to see those torque levels at 4500rpm with normal driving.
Basically saying its working as a transbrake, and just like a transbrake you get tons more spoolup, and i mean tons, than you would normally. Wether thats true or not, dunno, i dont have a clue about dynos.
Then Robbie from R.I.P.S. (ie legendary NZ Skyline tuner replied with...
I was thinking there'd have to be something like that going on but didn't want to start anything.
I think it would be a pretty safe bet to say that if he drove along in 4th gear at 4000rpm and nailed it, not alot would happen for quite some time.
Rob
Does Sheady or someone wanna reply on there to explain? I know fook all about dynos to know what the trusth is.
http://www.gtr.co.uk/forum/101217-72...4500-good.html
Pail Blamire from Zen Performance (ie the batshit fast Impreza Time Attack car etc) made an interesting post I jus noticed though, but its way over my head with regard to how dynos work, so needs some expert commentary, or maybe Sheady or someone to reply on there...
It's worth noting the results for ROd's engine come from an engine dyno where you can hold the RPM until the boost rises. Unless you hold it on the brakes you're not going to see those torque levels at 4500rpm with normal driving.
Basically saying its working as a transbrake, and just like a transbrake you get tons more spoolup, and i mean tons, than you would normally. Wether thats true or not, dunno, i dont have a clue about dynos.
Then Robbie from R.I.P.S. (ie legendary NZ Skyline tuner replied with...
I was thinking there'd have to be something like that going on but didn't want to start anything.
I think it would be a pretty safe bet to say that if he drove along in 4th gear at 4000rpm and nailed it, not alot would happen for quite some time.
Rob
Does Sheady or someone wanna reply on there to explain? I know fook all about dynos to know what the trusth is.
Its all well and good saying go to 4k and not a lot would happen for quite a while most likely not but FUCK either wait till 4.4k or drop a gear and this like a sledge hammer,
Experts got to love them a power run at 4.4k on the dyno will only take a couple of seconds to biuld the boost then nearly 600ftlb or so this would be the same as flooring it at 4.4k in 4th and waiting for the boost to biuld again this will only take a couple of seconds and guess what 600ftlb happens,
Try in 3rd yes it will take a couple of seconds to boost and wont reach full boost due to load for another couple of hundred but guess what 5k over 600ftlb happens,
Try the same in second and guess what it prob wont come on boost till 6k guess what yes again nearly 600ftlb,
So take a look at the graph use the gears correctly and you have access to 600ftlb when ever you want,
Stav not digging at you only the observers at may not be making the correct statements,
This is no 300hp T3 engine and wont have the responce lower down but Fuck will it go if you use the revs,
What other havent noticed this is a true split pulse diveded housing turbo when you drive a Twin scroll you never go back.
Mark
#505
PassionFord Post Whore!!
Ha Ha a so called expert take a look at my reply this is no T3 engine and yours is no better,
I think no need for your reply do I come on your threads and make replies maybe I should start.
Mark
#506
If you are not going to measure stable "brake" horse power on the dyno what are you going to measure.... "slightly braked more like in a car in 2nd gear" hp ? or what?
#507
PassionFord Post Whore!!
You can run a 300 or 600rpm per sec load program, Then at what rpm do you start it 2k 3k 4k because each rpm with have a diff transisonal responce i.e time to boost this will be better at 4k than 2k due to the shaft speed of the turbo, and then how long do hold the inital load before you let the program run.
Mark
#508
1st to 200 without NOS
iTrader: (2)
You are entitled to make comments on my threads (it's a public board), btw this thread isn't yours it was started by Dave!
Wrong time of the month Mark?
Last edited by Martin-Hadland; 08-08-2008 at 03:36 PM.
#513
PassionFord Post Whore!!
At what point in my reply to Stav did I say you had loaded it up? I don't fully understand when you say mine is no better, what does that mean... No better than what?
You are entitled to make comments on my threads (it's a public board), btw this thread isn't yours it was started by Dave!
Wrong time of the month Mark?
You are entitled to make comments on my threads (it's a public board), btw this thread isn't yours it was started by Dave!
Wrong time of the month Mark?
Wait till someone makes a comment then you can add a replynice work try to make a comment without accualy having to say it then adding on to someone else comment,
Maybe you should have said this before someone else did Oh sorry that would be tuna wars,
Maybe I will do the indirect comments ,
I think my reply on the stav bit jsut about puts the correct point across.
Mark
#514
You can run a 300 or 600rpm per sec load program, Then at what rpm do you start it 2k 3k 4k because each rpm with have a diff transisonal responce i.e time to boost this will be better at 4k than 2k due to the shaft speed of the turbo, and then how long do hold the inital load before you let the program run.
Mark
Mark
For an interesting point when you are next on the dyno (if you have not already done this) could you log an engine at static points like you do when mapping and then take a few logs with the different variables/ramp rates like above when doing power runs - all on the same map/settings/engine temps. I would really like to see the differences to see if they are significant or not, purely out of curiosity.
Would be nice to see the graphs back to back.
#515
*** Sierra RS Custard ***
iTrader: (3)
So is anything apples for apples as one superflow used by one person may still give different readings to one used by another. And the letters TUV mean nothing to me before mike starts lol!!!!!!
For an interesting point when you are next on the dyno (if you have not already done this) could you log an engine at static points like you do when mapping and then take a few logs with the different variables/ramp rates like above when doing power runs - all on the same map/settings/engine temps. I would really like to see the differences to see if they are significant or not, purely out of curiosity.
Would be nice to see the graphs back to back.
For an interesting point when you are next on the dyno (if you have not already done this) could you log an engine at static points like you do when mapping and then take a few logs with the different variables/ramp rates like above when doing power runs - all on the same map/settings/engine temps. I would really like to see the differences to see if they are significant or not, purely out of curiosity.
Would be nice to see the graphs back to back.
If its at points where on his power runs it makes the required boost pressure, then it will not be any different anyway, its only when you gain boost that it makes any difference really.
#516
fair point as if the boost is there so must be the load? Unlike when rollers are slagged for not offering enough to see the boost people are experiencing on the road.
Still interested, I like graphs lol
Still interested, I like graphs lol
#517
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#520
DEYTUKURJERBS