RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   Time Slips and Dyno (https://www.rx7club.com/time-slips-dyno-128/)
-   -   I want to see DYNO slips of NA TURBOS! & TII high comp (https://www.rx7club.com/time-slips-dyno-128/i-want-see-dyno-slips-na-turbos-tii-high-comp-508696/)

iceblue 02-11-06 01:29 PM

I want to see DYNO slips of NA TURBOS! & TII high comp
 
I want to know if I am right or wrong. So I am calling the group to post all there slips of your NA turbos and turbos with NA rotors. There is allot of claims out there and allot of logic of why a NA system can not create power. I want to diminish the misunderstandings and logics and prove one of them.

Please post your mods with the slip.

DemonicPupil 02-11-06 02:10 PM

Let me ask an interesting question about dyno slips while there's a thread here. Do I need to purchase my own wideband sensor and etc. when going to do a dyno tune, or do the dyno shops usually have one? Sorry, seems like a stupid question, but would love to know.

jm93rx7 02-11-06 02:12 PM

most dyno shops have it

classicauto 02-11-06 02:12 PM

True, but its also common practice that you would have your own........just like in this case........get your own thread! (joking but serious)

iceblue 02-11-06 02:20 PM

The dyno has one its also called a hydro stat sensor. This is how the dyno displays its results of AFR's.

ilike2eatricers 02-11-06 02:20 PM

it's dyno SHEETS and time SLIPS!!!

PS I dont think youll get many replies at all. You'll have better luck probably searching in the Timeslips/dynosheet forum

DemonicPupil 02-11-06 04:08 PM


Originally Posted by classicauto
True, but its also common practice that you would have your own........just like in this case........get your own thread! (joking but serious)

next time I'll make an extra thread then =P...

iceblue, as soon as I get mine all together, I'll get it dyno'd and post.. NA turbo.

Aaron Cake 02-12-06 09:50 AM

I never got a dyno with mine since dyno day got cancelled. And dynoing my new setup will probably produce results that are skewed a little higher then typical basic NA turbo setups. :) Regardless there are plenty of turbo-NA 1/4 miles runs in the archives from which you can calculate a HP value.

iceblue 02-12-06 11:27 AM


Originally Posted by Aaron Cake
I never got a dyno with mine since dyno day got cancelled. And dynoing my new setup will probably produce results that are skewed a little higher then typical basic NA turbo setups. :) Regardless there are plenty of turbo-NA 1/4 miles runs in the archives from which you can calculate a HP value.

This also has to do with a private conversation with Jrat. No one posts numbers and it seems allot of people feel that NA boosted can’t produce over 300hp. I disagree and say they can produce exactly the same amount of power. And with smaller turbos and less boost. If anyone has read the other thread about this its also been said that high comp cant work b/c of overheating and other stuff. Another one that ahs been brought up is that the volumetric efficacy of a high com setup can’t produce the power of a low comp. Again why do no top racers run high comp and why does the factory install low comp on turbo setups? Do they know something we don’t?

Like I said I am trying to dispel this information.

88rxn/a 02-12-06 11:35 AM

i think everyone gets scared because of the high compresion...
as for me... im shooting for the 300 mark only because i have a dual friction clutch and dont think itll take much more than that with a n/a tranny without slipping or breaking somthin... later ill go with a bnr stage 1 or 2 and see what happens after i get my setup i currently have going now going decent... ill try to get some numbers this summer :)

Aaron Cake 02-13-06 01:39 PM


Originally Posted by iceblue
Like I said I am trying to dispel this information.

Honestly, who cares? :) Let them think what they want. Much better things to use your energy on (as I learned several years ago after getting in the 10,000th argument about it).

jacobcartmill 02-13-06 01:49 PM

turbo NA's are slow and in pieces

ask aaron cake :x

stacher 02-13-06 07:41 PM


Originally Posted by jacobcartmill
turbo NA's are slow and in pieces

ask aaron cake :x


Have you own one? Didn't think so! So, that must be your OPINION.

I get it...... you are just joking.

SonicRaT 02-13-06 07:45 PM


Originally Posted by jacobcartmill
turbo NA's are slow and in pieces

ask aaron cake :x

lol, this coming from a guy can't top a car with 210k miles and a HYBRID!

jacobcartmill 02-13-06 07:48 PM

doesnt your car get like 62mpg too, mr sorenson?

SonicRaT 02-13-06 07:50 PM

That'd be 32, and that'd be a different car too.

jacobcartmill 02-13-06 07:50 PM

oh, ok.

SonicRaT 02-13-06 07:51 PM

Which is also faster than you now, just incase you're wondering. :D

13bdarren 02-13-06 08:09 PM

I just bu ilt a bp turbo na engine. I plan to run a t04b turbo with megasquirt. Won't be able to get a dyno runs in till spring.

CrackHeadMel 02-13-06 08:43 PM

they should make more tq ealier by definition, but not more overall peak power.

effective compression is effective compressoin, with a 8.0:1 slug and 20lbs or a 10:1 with 6 lbs, you can only have so much chamber pressure, only so high of egt's etc etc

and for the record, the #'s i used were just to make a point, no truth to them,

CrackHeadMel 02-13-06 08:53 PM

an 8.7:1 cr motor running 1 bar has an effective comp of 17.4:1 (easliy done on pump gas)

a 9.7:1 cr motor only has to run 11.7lbs to have the same effective CR

With the lowe ramount of booost, intake charge tempetures are lower, smaller turbo can be utilized which can translate into a quicker spool, and a faster car etc etc

-Jacob

SonicRaT 02-13-06 09:58 PM

You run into a situation where you reach a point where your engines temperature rise prevents you from making more power (or running more boost). At this point, you're making considerably more power than a lower compression engine running the same boost, however, if you crank up the lower compression engines boost and near the same power as the higher compression, you then reach a point where if your turbo is still efficient, you can run more boost (and hit a higher effective CR, since the turbos temperature rise is less than the engines at that point), and make more power. Where this threshold is depends on the way the engines built, tuning, equipment used, etc. As companies continue to develop parts, they can withstand this and work within this a lot better, thus why companies are increasingly running more compression on their turbo engines.

eriksseven 02-14-06 03:07 AM

I'm dyno'ing my '87 TII on Sunday with 9.4:1 N/A rotors. The mods are pretty basic for now:

mild intake/exhaust porting
s4 high-compression rotors
2.5" Bonez DP/MP bolted to Apexi N1 exhaust
Walbro 255
750cc secondaries
R-Tek 1.7 chip
stock turbo/TID running 13psi via Profec-B

I'm hoping for around 230whp.

SonicRaT 02-14-06 03:14 AM

With decent AF/R's you should be higher than 230, probably closer to 260.

chuck8313BTSDS 02-14-06 03:23 AM

http://groups.msn.com/ChucksRX7/1983...to&PhotoID=104

http://groups.msn.com/ChucksRX7/1983...to&PhotoID=109

Here's a dyno and a time sheet (right lane) for 9.4 rotors running boost.
car was a 1st gen at 2720lbs during the IDRC event.
chuck

rotary downshift 02-14-06 04:02 AM

chuck i must say ,, congradulations withthoes numbers .. must have been the talk of the town so to speak

JoshRX7 02-14-06 01:03 PM

Erik, what kind of turbo do you have on that thing?

88rxn/a 02-14-06 01:17 PM


Originally Posted by eriksseven
I'm dyno'ing my '87 TII on Sunday with 9.4:1 N/A rotors. The mods are pretty basic for now:

mild intake/exhaust porting
s4 high-compression rotors
2.5" Bonez DP/MP bolted to Apexi N1 exhaust
Walbro 255
750cc secondaries
R-Tek 1.7 chip
stock turbo/TID running 13psi via Profec-B

I'm hoping for around 230whp.

i thought this setup would run closer to 300 to the wheels???
with stock ports????

SonicRaT 02-14-06 01:55 PM

With a stock turbo at 13psi, it wont be over 300.

88rxn/a 02-14-06 02:17 PM

but 300 is possible???
you told him 260??
ill prob. invest in EGT and i would like to be at the 300 mark...
with a 1.7 and safc is it possible with 2 1/2 DP and 3 inch exhaust???
would it help if i went 3 inch DP??
all on a 6port

SonicRaT 02-14-06 02:53 PM

The stock turbo doesn't move enough air, it'll run out of steam around 275-280.

Jager 02-14-06 03:04 PM

Only one person has a dyno sheet?

SonicRaT 02-14-06 03:14 PM

Probably, the availability and cost of dyno time doesn't exactly make them very common.

88rxn/a 02-14-06 03:20 PM


Originally Posted by SonicRaT
The stock turbo doesn't move enough air, it'll run out of steam around 275-280.

i see... after i get this setup done i thought about a stage turbo from BNR... would a stage 3 be to much??? how about 2... im not looking for much more than 300... and will my 720's support it??

SonicRaT 02-14-06 03:32 PM

support 300rwhp? No, I wouldn't try that, they'll be damn near their limits.

iceblue 02-14-06 03:33 PM


Originally Posted by 88rxn/a
i see... after i get this setup done i thought about a stage turbo from BNR... would a stage 3 be to much??? how about 2... im not looking for much more than 300... and will my 720's support it??

A stage 1 will just reach the 300mark on low comp. So no prob on a higher comp setup.

88rxn/a 02-14-06 05:38 PM

thanks guys... what injectors should i get for secondaries??? will the 550 be enough for primaries???
iceblue: im sorry for hijacking... im done after this question....

iceblue 02-14-06 06:03 PM

I would run 850's :-/ and 550P

jacobcartmill 02-14-06 06:44 PM

i'd say get some 1680 secondaries. they're cheap.

88rxn/a 02-14-06 08:18 PM


Originally Posted by jacobcartmill
i'd say get some 1680 secondaries. they're cheap.

id like to but id never be able to control them with a SAFC II and a rtek 1.7

jacobcartmill 02-14-06 10:07 PM

oh! sorry i didnt notice that you were on the rtek7 :x

eriksseven 02-15-06 04:59 PM


Originally Posted by JoshRX7
Erik, what kind of turbo do you have on that thing?

I've just got a stock turbo on it right now... :D

I don't put a lot of emphasis on the higher-compression rotors. I think they're a little bit over-hyped. The throttle response etc. might be a little better, but I'd honestly rather build with 8:5's just to keep it safe...

I also doubt that I'm gonna hit 260 to the wheels. The 2.5" DP/MP combo and the stock TID are pretty restrictive. We shall see though... ;)

eriksseven 02-15-06 05:01 PM


Originally Posted by 88rxn/a
id like to but id never be able to control them with a SAFC II and a rtek 1.7

You could... Just tune it correctly. :) Forget about the R-tek as a means to control the fuel, just use it for the timing retard and boost-cut prevention. Throw the big injectors in there and tune them down. ??

88rxn/a 02-15-06 05:08 PM


Originally Posted by eriksseven
You could... Just tune it correctly. :) Forget about the R-tek as a means to control the fuel, just use it for the timing retard and boost-cut prevention. Throw the big injectors in there and tune them down. ??

yeah these are my plans... the rtek is really for what you said but to big of injectors and ill have trouble... im having small trouble now with 720 and stock ecu but i havnt no one to drive while i tune.. as soon as the weather gets nice and my exhaust leaks are fixed im gonna tune it better... im in the 10.5 to 10.9 range now just for saftey... well...maybe its my damn TPS giving me trouble.... ugh....ill prob. go with 850 or whatever is close to 720's cause i still have a n/a drivetrain with a centerforce clutch and the clutch wont take much more than 300 so ill keep the 300 mark realistic....for now :)

eriksseven 02-16-06 01:33 AM

I'm not dyno'ing my N/A setup until the 26th of February. I thought it was *this* Sunday on the 19th, but the date was changed. :)

JoshRX7 02-23-06 06:16 AM

Don't blow her up Erik :) Step away from the boost controller! The old TII is still running. Same ole same ole.

Josh

88rxn/a 02-23-06 12:34 PM

almost D-day for eric !! post those #'s !!

SonicRaT 02-23-06 04:36 PM

Blow it up! Maybe if ya do it'll deter people from wanting to do this swap and PMing me 500 times a day! :p

JoshRX7 02-23-06 04:58 PM

hahaha... word. I wish no misfortune on Erik though, he's a pretty good guy.

Josh

SonicRaT 02-24-06 01:03 AM

Yeah, true that, but it might help eliminate the need to clear my PM box on a daily basis!


All times are GMT -5. The time now is 01:38 PM.


© 2024 MH Sub I, LLC dba Internet Brands