nyt

iTrader: (1)

Well, I went to dyno my car today (shitty weather, raining.. blah blah)

edit: this is on the same stock block setup.

First pull: 355 rwhp (dont know how that happenned.... felt same as every other pull)

second pull: 40x with a dip due to a very rich spot

After i tuned that out, it'd spin on the dyno. I watched my MPH (went to 135) then as soon as id clutch it'd drop to about 125/120. I plan to take this to a dynojet soon after i get some more cash i can spend.

best pull was 420something.

I also leaned out my fuel maps on the way home so it'd make some more power after 7000rpm since it was running rich..

so heres the dyno, these were 19-20 psi on pump gas, all the runs were made to at least 135mph (so you can see theyre definitely slipping). the red run was the last run after tuning out the rich spot. the more power i made the more it slipped =[. if anyone knows someone with a dynojet in the area that can get me a good deal for just a couple of pulls let me know. thanks

dag

Impressive. This is on an HKS undivided manifold? What intercooler setup and what wastegate are you running?

nyt

iTrader: (1)

hks standard wastegate, cast undivided manifold, greddy 24r intercooler... doesnt help much when youre in a shop.. my intake temps went from like 30c down to 24c during the runs.

nyt

iTrader: (1)

woot mustang magic is having a dyno day on saturday. $75 for 3 runs with air/fuel. im so there.

widebody2

hey buddy...you tuned your own car? I'm looking for someone to do mine. Where are you on the Island. I'm out east.

nyt

iTrader: (1)

yah i tune my own car. what kind of car/ecu?

Carl Byck

That's consistent with the sizing you mentioned(35R), nice curves, how about an RPM based sheet, can you convert it roughy to RPMs? What boost do you think it would take to hit the ~475# you were hoping for? good job, Carl

eViLRotor

iTrader: (2)

Hmmm...you made 427 on your GT40 @ 17psi. Now 420 @19-20 psi with the PT61. Still awesome, buy maybe you shoulda kept the GT40

Either way, good ****

Wargasm

Thanks for the dyno!

I'd be interested to see what this would pull on a Dynojet since that is what most RX-7 dynos are done on.... Also, RPM would be nice

As for the comparison.. I don't see a whole lot of difference between your GT40 (82) graph and this new one. Is the PT61 really bigger?

nyt

iTrader: (1)

the pt61 is really bigger, i made 420 with my wheels slipping. obviously a roller isnt going to spin as fast when its not keeping up with your tires =]

im hitting a dynojet on saturday.

nyt

iTrader: (1)

double post

Carl Byck

Throw four or five bags of concrete in the back

RETed

What dyno was that done on?
If it's anything like an MD one, that's a 450+ run on a DynoJet...

Nice!



-Ted

nyt

iTrader: (1)

its a clayton. ill run a dynojet on saturday =[ whys saturday so far away?

Carl Byck

Here's a T61BB dyno for you

nyt

iTrader: (1)

nice

Carl Byck

I'd say crazy, I Pm'd the gentleman to get a lttle more info, time for you to turn it up. BTW, Talked fuel with Theo tonight, Nice guy. Carl

alberto_mg

Lizzard Racing Enterprises
387 Wyandanch Avenue
North Babylon, NY 11703
http://lizzardracing.com/

We went here when Steve Kan came to town. Nice shop. Easy to get to right off SS and cheaper than Mustang Magic. They usually charge 75-100 an HOUR. You can get quite a few pulls in an hour...

And that includes the wideband.

eViLRotor

iTrader: (2)

When my SR KKK ever goes, im getting a T66

nyt

iTrader: (1)

t66 is biiig =]

my power band is nice with this pt61. i cant wait till saturday. stupid wheel spin stupid clayton. *grumbles*

Carl Byck

To be clear that is not my T66 dyno. I do not really agree that the T66 is "big", but I need to demonstrate that to the forum. I have a turbo sized slightly smaller than CARX7s turbo which had a great power band, and made 467 at 19psi with fuel "issues". I think it will make 450 with great spool at 22psi.

enzo250

Only thing a dynojet is good for is for a hp number to brag about.
They absolutely suck to tune on for anything else.

You'll need a nice eddy current dyno to properly tune on a dyno...

Wargasm

Well I'm not debating about what is better for tuning. I'm talking about what makes your numbers more comparable.

If I tell you that my "Big B Brand" dyno tells me I have 480 rwhp at 8 psi of boost and it's GREAT for tuning... you guys would all respond to get on a Dynojet and get a "real number".

I agree, a Mustang-type dyno is better for tuning. A Dynojet is better for getting "real numbers" - because that's what about 90% of RX-7s are dynoed on.

RETed

Brag about dyno numbers is like bragging about your ****.
Guys like to say how big their **** is but when it comes time to who, very few will.
I'm not talking about roosters either...

Not to insult anyone, but the numbers really doesn't matter.
There was a recent dyno comparo in SCC(?) that showed even different DynoJets can spit out different numbers.

All the other dyno manufacturers like to brag about how theirs is better than the DynoJet - uh ok.

All that matters is that you dyno on the same dyno for all your tuning, and that should give you consistent gains (or losses).
Even Mustang Dyno conceded this point...


-Ted

pluto

I think altitude correction factor plays a major role in dyno #'s. The thing about forced induction is that it doesn't affect the #'s as much as the N/A cars. I love how some cars were dynoed at high altitude claiming the corrected #'s are 100rwhp+ more than it actually is but the fact is that when you goto a lower altitude elevation, it may be only 20rwhp difference (at most). I agreed that there're some errors associated with each and every dyno but the % should be less than 5% at most.