I went to a dyno day with the danish Honda club and made some pretty insane numbers with my basic setup. This dyno always put out the lowest numbers in Denmark and 18 other Honda's also made some conservative numbers that day.

I have only had 1 hour on a dyno for some basic tuning where we made the timing very neutral. At that time I had a tiny 2.5" SI Injen intake on and made 195 bhp. I switch that out for my stock intake and the plot is totally fucked up now.

By the look of the plot do I need extra fuel, change the timing or what at 5k? VTEC is at 3500 rpm.



Video of the dyno run
http://www.we-todd-did-racing....DE%3D


The setup:
B20B3 block bored/honed to 85 mm.
IB Spec Wiseco 11.8:1 pistons
Probe Industries Ultra Light rods
Hondata B16A Heatshield
Stock B16A1 head, cams, IM, TB and intake
JG Edelbrock header with IB 2.5" collector
2.5" Carsound cat
3" Thermal cat back
7 lbs Clutch Masters flywheel
ACT 6 puck clutch with Extreme pressure plate
B&M fpr.
Hondata S200 with P28 ECU


Parts on the way:

SMSP B20VTEC header
3" Carsound cat
IB Spec cams
IB Spec Valvetrain
IB Spec valves
STR cam gears
RPM Service 70 MM TB
RLZ intake manifold
RLZ Stage2 B16A head


Modified by CRXEE8 at 11:50 AM 8/31/2004

 

Thats very good for what you have, you should be able to get close to 200 with some more dyno time

 

"bored/honed to 85 mm, 11.8:1 pistons"


better tune it well, a little detonation and all your work goes out the window.

Good numbers btw

 

You need to spend some serious time with that hondata that you have. if you have your vtec set at 3500, you are definetly loosing power from 3500 untill the spot where your computer is used to switching to VTEC. when you adjust the point your vtec hits, you need to adjust the fuel considerably from the point you set it to, to the point the computer is used to. I"ve been spending my saturday mornings on the dyno for the past 2 weeks, its painstaking sometimes, but good luck with the Tuning man.

 

Nice numbers but you definitely need some cams. I have seen 205+whp on a stock bottom end B20VTEC with JUN 3's.

When you finish up with the future mods you have listed it should be a nice strong motor as long as the sleeves hold up.

 

need some cams,
that graph drops off real hard after like 7k

 

^ just thinkin that

 

Thanks for the replys guys....
Yes I know I'm in need of new cams but all the stuff I wrote in the first post are on the way from RLZ and IB. It's already paid so I'm just waiting now for the parts to arrive. I also got me a wide band lambda so I will be tuning on the road and hit the dyno afterwords to tune for max power at full thr.

 

You should set your VTEC past redline on a run and then look at the dyno sheet and use that to base where to have VTEC engage at. Having it engage at 3500 RPM is way to early. Your gonna be burning oil too having it engage that early!

 

Well VTEC was set a 3500 because of the way the old plot looked like with the 2.5" intake. Back then the plot was fine.

 

Nice numbers!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shorto85 &raquo;</TD></TR><TR><TD CLASS="quote">Your gonna be burning oil too having it engage that early!</TD></TR></TABLE>

I don't understand this, please explain.

 

nice

Get more tunning done, especially since your on stock b20 sleeves. Dont want them to crack on ya.

 

From my understading what kills the B20 sleeves is detonation. We have set the timing very neutral and I'm running 98 RON fuel so I think I will be fine. So far I have had zero problems with this engine for 8000 miles

 

That graph don't like right, your peaking and dying off rapidly. Try another header or some more tuning.

Then agin, I just read its a bone stock B16 head, makes sense now.

Other than that, congrats

 

nice #

 

216 N/M, that's awesome! (159 ft/lbs. )

-PHiZ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BERT-O &raquo;</TD></TR><TR><TD CLASS="quote">
That graph don't like right, your peaking and dying off rapidly. Try another header or some more tuning.

Then agin, I just read its a bone stock B16 head, makes sense now.

Other than that, congrats </TD></TR></TABLE>

Yeah the stock head is killing me.... it will great with the IB Spec cams and Brad's Stage2 head. Alot more hp to come

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXEE8 &raquo;</TD></TR><TR><TD CLASS="quote">From my understading what kills the B20 sleeves is detonation. </TD></TR></TABLE>

My understanding is that the danger is actually the increased stress on the sleeves due to the higher piston side-loading which comes from the LS/VTEC geometry (rod-stroke ratio). Anyone more experienced wanna comment on this?

 

Nice Numbers! Good luck!

 

Nice numbers, but why were you taking a B20 bottom end to 8600 RPM on the dyno?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">Nice numbers, but why were you taking a B20 bottom end to 8600 RPM on the dyno? </TD></TR></TABLE>

Well I don't understand that either because my rev. limiter is at 8000 rpm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXEE8 &raquo;</TD></TR><TR><TD CLASS="quote">Well I don't understand that either because my rev. limiter is at 8000 rpm.</TD></TR></TABLE>

Thats scary, you shouldn't be going past 8k.. you don't even make power that high. I would find your tuner and PHDTS.

 

Wow...this makes me excited! I definitely want vtec for my b20 now!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKhatch &raquo;</TD></TR><TR><TD CLASS="quote">Nice numbers but you definitely need some cams. I have seen 205+whp on a stock bottom end B20VTEC with JUN 3's.

When you finish up with the future mods you have listed it should be a nice strong motor as long as the sleeves hold up. </TD></TR></TABLE>

jun 3's with a stock bottom end aren't the valve reliefs on a b20 piston a little too small for a cam that size?