OST Dyno Day # 3

[_ShadowZ]

Damo needs a pop-up book and sock puppets !!

[Wildsupra]

Chris you are a champ, any1 who isnt sure how it all works should read his posts about 5 times and try soak it up. you are bang on mate and dont think i could dis agree with anything you have written there. It takes a lot of background knowledge to know what it all means.
(chris what do you do for a crust mate?)
Glad some1 else had the patience to explain it in such detail before i tried

Matty

P.S. eldar is right todd, 7M's are more torquey and torque makes more difference than horsepower.......in most cases

TO THE DRAGS!!!!!
DAMO SET A DATE FOR OST!!!!!!

[JustCallMeOrlando]

Give it at least a month for my bank balance to recover!

[WA_TRD_83]

Give it at least a month for my bank balance to recover!

yeah.. it will be sometime in December.
would be good if the people that went in the Dyno Day also went to the drags.. then we could compare the times with the horsepower as the debate has risen..

Damo

[WA_TRD_83]

This is turning out to be quite the technical thread.. I like it.. I think I'm learning stuff!

Unfortunately I still have no idea what all these curves and numbers mean on my graph.. I'll have to post a pic of it tonight so people can analise it for me and tell me what needs to be fixed - cos on 1.3bar (17psi) it should have been making more power than it did..

Damo
TRD83

ps. collected disk from Dean with pics & video of the day.. will also try and upload them tonight..

here's my dyno print out in case anyone wants to analyse it and tell me something about how my car is running



cheers
Damo
TRD83

[Alien]

thanks to todd for pointing out MY CAR SUCKS!
haha nah jokes.. I mean yer im seriously not even going to pretend im an expert, when i saw the dyno, was my first time and i didn't even really know what half the abbreviations on the bottom of the sheet ment.

Having said that, at the drags the mph is different, and i have really assy times because i dont really know how to launch my car etc as of yet due to only owning it for a short period of time.. But on the street, yes, my car didn't feel as fast as Todds.. Whether i think my figure is really that accurate, well apparently not but even around that area i am happy with as i had no expectations at all of what my car would do.

Also important to note when comparing Todds and my dyno sheet that with the boost curves his peaks at 0.9bar and mine at 0.6bar even though the lines look to go to same height.. my car is not running high boost.

I also didnt expect for my car to be as fast as Todds haha, so im not exactly gutted that it isnt hehe, he has put alot of effort into his car and i almost ejaculated when we swapped cars , and i am happy with my car as it is for the moment.. but seriously Todd - EASE UP ON THE NIGEL CRAPPY CAR BAGGING im a noob ffs lol.

nah your cool man.. i think your just abit pms about your low figure haha..
but it is good to let everyone know about that incase the greatest heresy of all could appear in peoples minds: that a 7m MIGHT actually be as good as a 1j :O lol

[zombie]

I wish I had of thought to ask for a graph with RPM rather than speed, I got the boost graph, but didn't think to ask for one showing RPM

[Stomps]

but it is good to let everyone know about that incase the greatest heresy of all could appear in peoples minds: that a 7m MIGHT actually be as good as a 1j :O lol

hey my 7m beat plenty of 1j's and even with a ct26 it made 280 on 12 psi..
not to mention Chris' 7m..

they are underrated motors..

Also, drags may be a good indicator of hp/ accel etc.. but its on the circuit that it really matters.. Best indicator of all round performance is not in a straight line..

My opinion anyway

[Alien]

lol yer i just kinda mean stockish against stockish... not a bombed 7m against mild 1j.. but i get what you mean, i wouldnt have bought my car if i didnt think the motors have potential man

[JZA70 R]

Sorry Nigel, you know i love you, and your Turbo A. I was a bit cut about my figure, and i had to find out why as i knew the car was performing no different to last time.

Matty so when does a 7M become torque'ier than a 1JZ?, also do you mean on or off boost? because stock turbo for turbo it appears the complete opposite?

Stomps your opinon is noted

Zombie apparently its too much drama to hook up whats required to monitor RPM at dyno days. I think they have to do something different to get that readout and its much easier to use SPEED as replacement.

[Alien]

*sniff* love you too man *sniff*
but i know where your coming from, i was suprsied with my figure and truthfully i doubt that i will get it again if i had it dynoed in the future on same setup, due to as said, where they take the IT from... And i also would be probably a tad upset even though i know its what it true..

I would rather a low figure and a car that performs well on the street and runs good times etc. then a dyno queen with apparent good numbers but cant show it. And i do know that your car out-performs me in almost all aspects of the car.. besides displacement lol

Nevertheless i will continue to build this car up and hopefully prove to be a worthy challenge for your car and all other 1js in the near future

[EldarO]

Also i remember Eldar talking about how torqueless and gutless the 1JZ is, and how the 7M is some crazy torque monster hence being a superior motor?

Well...

it is, like you said, the dynos wrong

Damo, i dont think your car would be making as much power, because youve got a highflowed turbo, i doubt its within its efficiency range.

obviously Matt used it on a built motor, and pumped more boost through it, and made bulk power.

and Todd, i didnt mean "crazy torque monster", but put the two motors side by side.

one has less capacity, and two smaller turbos, what does this mean? it hasnt got as much torque down low, so the two smaller turbos are there to kick in earlier to substitute for the capacity.

the 7M on the other hand, to make it bareable enough to drive off boost, enough to warrant a bigger single, as it has enough torque, through capacity, to substitute for turbo response.

im experiencing a bit of lag on my 1J, a bit more than i was expecting, its a good motor, but off boost its just horrible to drive, it goes no where.

i cant really compare, as my 7M was auto, but it was ALOT easier to plod around off-boost and get the same job done.

my main gripe is that the factory 7M cockup meant everyone thinks the 7M's are shit, whereas if a 7M is refreshed, back to factory spec, of course its going to make more horsepower, its got the capacity.

the problem with most 7M's nowadays is that they've all blown, most of them have overheated, and a majority arent as strong anymore because of it, the alloy turns to butter and before you know it your blowning HG's BEFORE you put them in.

i might be a monkey, but your an emo thats just whining about his dyno printout, get over it

Eldar.O.

[glytch]

Also, drags may be a good indicator of hp/ accel etc.. but its on the circuit that it really matters.. Best indicator of all round performance is not in a straight line.

Anyone who dissagrees with this statement should come down to Belmont Racecourse carpark this Sunday at 12. Watch a 67HP 18RC beat most of the field.

[WA_TRD_83]

My dyno video for those interested...

the 2nd (higher hp) run

http://www.youtube.com/watch?v=KrtlCIqCpm4

Damo
TRD83

[WA_TRD_83]

Damo, i dont think your car would be making as much power, because youve got a highflowed turbo, i doubt its within its efficiency range.

obviously Matt used it on a built motor, and pumped more boost through it, and made bulk power.

Eldar.O.

wouldn't a highflowed turbo increase its efficiency?

prior to the rebuild - I'm sure all Matt had done to his 7M was hi-flow turbo (now mine), aftermarket intercooler (same size cooler as me), 1UZ AFM and bigger injectors..

I think my motor has a lot more power potential - just something isn't right at the moment..

Damo
TRD83