Well just back back from the dyno...

I got to put the SI on the Mustang and make two pulls.

161.1 WHP
115.2 TRQ

Peak hp came @ 8000rpm.

MANY S2000s have put down 170-175whp on this same dyno..in comparision.

I would of guessed more like 150whp...... to be within 10-15whp of a stock S2000

A stock 300 hp rated 350z puts down 225 WHP on this dyno.

Details: car has 1200 miles and was switched over to royal purple @ 800 miles...other then that it is 100% stock.


161whp on a normal reading Dyno Jet no biggie,...but on this heart breaker dyno...its nice.





Modified by Marksri at 12:27 PM 1/24/2006

 

Umm no, S2000s do not put down 170-175 stock. Not that it's much more, but more in the neighborhood of 190-200. Thanks for playing.

Nice #'s on your SI though.

Edit: What kind of dyno is this?

 

ON THIS DYNO...S2000's make 170-175 WHP.


Go look up what stock s2000 put down on the Gruppe-S dyno

You can't cross dyno #'s from other dynos..thats been proven many times.

http://www.s2ki.com/forums/ind...st=50

Heres a link to what some S2000s did on their last dyno day.


I'll try to scan the dyno sheet later.... the dyno confirms..you have to really drive the **** out of this car to get it to go fast if thats your thing...as peak power doesn't occur till 8000 rpm...i would say a good shift point would be in the 8200-8300rpm range.




Modified by Marksri at 1:02 AM 1/24/2006

 

without dyno sheet scans....... it didn't happen

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marksri &raquo;</TD></TR><TR><TD CLASS="quote">Well just back back from the dyno...

I got to put the SI on the Mustang and make two pulls.

161.1 WHP
115.2 TRQ

Peak hp came @ 8000rpm.

MANY S2000s have put down 170-175whp on this same dyno..in comparision.

I would of guessed more like 150whp...... to be within 10-15whp of a stock S2000

A stock 300 hp rated 350z puts down 235 WHP on this dyno.

Details: car has 1200 miles and was switched over to royal purple @ 800 miles...other then that it is 100% stock.


161whp on a normal reading Dyno Jet no biggie,...but on this heart breaker dyno...its nice.


Modified by Marksri at 12:50 AM 1/24/2006</TD></TR></TABLE>

Nice numbers, looking forward to picking up my si.

 

RWD has a little more drivetrain loss than FWD, so keep that in mind when comparing figures.

Dynos are great for tuning, but for comparing HP numbers...not so much.

 

For comparison's sake, I made 184/132 on a Mustang Dyno and 213/154 on a DynoJet 248c with no other changes to the motor, just two different dyno's, two different day's.

Mustang's usually read between 10-15% lower than DynoJet's, so expect his power to be somewhere close to 185/132 on a typical DynoJet 248c.

 

nice numbers. are you stock?

switching oil already at 800 miles? ... not even waiting for the break-in oil to be used thoroughly?

 

Read the first post for the details of the car.

According to the owners manual break-in is 600 miles.

I've dynoe'd some of my previous cars..and have had pretty good luck getting nice baseline hp #'s...so i stick to my breakin methods as they have proved to work for me.


Thanks..yea to be with 10-15 whp of a stock S2000 is kinda cool for a stock Civic.


I'll try to scan the dyno sheet later....Theres another Dynojet 248c around my house...maybe later on I'll try that one.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marksri &raquo;</TD></TR><TR><TD CLASS="quote">Read the first post for the details of the car.

According to the owners manual break-in is 600 miles.

I've dynoe'd some of my previous cars..and have had pretty good luck getting nice baseline hp #'s...so i stick to my breakin methods as they have proved to work for me.


Thanks..yea to be with 10-15 whp of a stock S2000 is kinda cool for a stock Civic.


I'll try to scan the dyno sheet later....Theres another Dynojet 248c around my house...maybe later on I'll try that one.
</TD></TR></TABLE>

yes, I did read the first post of the car. But from what I understand, the oil that is first in the car is considered "break-in" oil ... it's special oil to help seal your engine properly and it's advisable not to change it until about 5000 miles into it.

 

Hondata tuned RSX with mild boltons = faster than stock S2K in straight line...so the dyno chart seems about correct.

 

What gear?

 

dam...nice numbers, Si's seem very promising

 

4th IIRC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznboysrfr &raquo;</TD></TR><TR><TD CLASS="quote">

But from what I understand, the oil that is first in the car is considered "break-in" oil ... it's special oil to help seal your engine properly and it's advisable not to change it until about 5000 miles into it.</TD></TR></TABLE>

5000 miles...? Are you sure about this? Is this what the owners manual states? Owned a few Hondas in my day and never known changing the oil to be a BAD thing - all switched to Mobil 1 at about 750-1000 miles and NONE burned oil. Stock rings are pretty much ready to go from intial startup. I cant say how many times we've actually broken in a freshly built motor on the dyno or on the street...

 

ok... which Si is this??? the FG or EP? *scratching head*

cause i'd be jumping for joy if it is the EP!

 

FG2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznboysrfr &raquo;</TD></TR><TR><TD CLASS="quote">...from what I understand, the oil that is first in the car is considered "break-in" oil ... it's special oil to help seal your engine properly and it's advisable not to change it until about 5000 miles into it.</TD></TR></TABLE>

^^^^

That is exactly what my dealer told met too.... Everyone has their own methods of breaking in motors/clutches/etc... But I really don't have a whole lot to lose (beside a few horse) by waiting til 5000 miles before royal purple... I wish someone from HONDA would squash the question of proper breakin for everyone!

BTW - Nice numbers and thanks for giving us FG2's owners an idea of what we are at stock!

 

I just changed my oil today at 100miles I work on cars all day and that is when we have our first "service" if you can call it that, just the oil is drained. I am using regular mineral based oil up until 5000 miles then switching to Royal purple. By doing this I am allowing the rough edges and rings and bearings and everything seat properly. Once that is complete at 5000 miles then you should change the oil, over to synthetic.

 

so- you're basically saying that they (honda) put crap oil in the car, so that it gets all the imperfections out of the motor... just so that you would put a better oil in it later?

In my "limited" knowledge, I'd think you might as well break it in with the better oil as well. ****- go home from the dealer, throw your expensive purple **** in there, and have fun. Me- i'll stick to my partial synthetics, at regular intervals.

 

You want to use a non-detergent motor oil for breakin because the oil tends to 'hold' small particles of metal on the cylinder walls, which cuts the rings faster. However, most automakers don't recommend changing the oil (for what seems to be a long mileage span) because their 'breakin' oil contains some detergents, not as much as conventional synthetics, but enough to cycle the particles. If you use a cheap oil like Castrol GTX, which is my favorite breakin oil, changes every 50 miles for the first 200 miles is optimal.

There are more problems with oil consumption and loss of compression from using a long term breakin procedure than most people realize. Babying the motor does not properly load the cylinders, and does not seat the rings completely. However excess heat and too many RPM's can cause the rings to seat before they are cut.

The most important factors in breaking in a motor are varying load, varying RPM's and keeping heat to a minimum. If driven correctly, you should have complete ring seating by 200 miles.

 

Coming from the Subaru world...they way we normally break in the motors...like the last two on my STI..

We put about 1000-2000miles on them low boost....run off the wastegate spring...and a low low 4500-5000 rev limit.

The last motor i had to breakin on the car...i went too easy on...came back did a compression check...turns out i didn't quite break the rings in..i babied the car too much...had to take the car for another 1000 miles of breakin until the rings seated better.

So there is something said about not "babying" a car...a nice progessive approach in terms of slowly raising the max rpm and always changing gears works well.

 

the last TWO motors on your STi? ok- sounds like alot of experience of good break-ins....

 

how did this go from a dyno discusion to an oil discusion? good numbers on the Si by the way. do you know how much hp the RSX Type S put down on that same dyno stock?

 

I don't think that shop has ever dynoe'd a RSX.

They have had S2000 and 350Z dyno days in the past.

They do alota AWDs....Subbys and Evos mostly.

Heres a few stock dyno #'s:
S2000's stock 240 rated 170-175
350z stock 287 rated 210-215
WRX stock 227 rated 155-165
STI stock 300 rated 210-215
EVO 9 stock 286 rated 220-230

For examples sake a 342whp STI did a 11.8@117 weighing in at 3400#'s with driver
.http://www.treynor.com/SRT-WRX.wmv
Hope you guys like the vid...its new 500hp Viper with gears/drag radils/intake//light headwork.
The Subby has a FP green turbo/turbo back exhuast and a good race gas tune.




Modified by Marksri at 10:05 PM 1/25/2006