H22a/EG stock dyno result

[doo0T!doo0T!]

Originally Posted by Bazda

ok, your car has more power than 100kw TRUST ME.
This dyno has read low on the car I work on which is a 4agte trueno and it only puts out 196kw on this dyno but managed a 12.6@186 with a 2.1s 60ft.
Compared to my car I would say it has 240kw easy, as i had 200kw on 8psi on another dyno and his car eats my car if i run 8psi and he runs his 25psi with the "same" apparant power haha.
I would def say this dyno reads about 20% lower than say torque performance and tricky tunes hub dyno.

Holy shit, 4age turbos always seem to go so damn hard!

Anyway thats interesting to hear about the dyno, I guess the only way to know for sure would be for me to take the car like it is to Torque Performance for a quick run to see how different it is.

I'm not too concerned really, I'll stick with the same dyno now I'm looking forward to seeing what the I.H.E will do and a little tune up.

[Boostin It]

Originally Posted by CamB

It also suggests your vtec is coming in about 4800rpm/118kph, which sounds about right.

im running what should be stock rolling diameter for my tyres and i have the same box/motor as mike and my vtec comes on 3rd gear at like exactly 100kph on my tacho which is around the 5000rpm mark hrmm 160kph in top of 3rd.. that sounds a bit tooo long..

[doo0T!doo0T!]

Originally Posted by Boostin It

im running what should be stock rolling diameter for my tyres and i have the same box/motor as mike and my vtec comes on 3rd gear at like exactly 100kph on my tacho which is around the 5000rpm mark hrmm 160kph in top of 3rd.. that sounds a bit tooo long..

I'm running 195/50/15's.
Vtec is about 5100/5200 going by my tacho and I'm sure it can do 160 in 3rd (thats on the limiter), ask Timmiblc cos he was in the car.
Rev cut doesn't seem to kick in till 8000 on the tacho and speed cut is about 190. (I have no idea what they are supposed to be)

I'm sure, just like CamB, my speedo and revcounter are out of whack.
It's the 2nd tacho I've had in the car though and both read the same. One was a ZC one, the new one is an SiR one.

[CamB]

My tach is definitely around 10% out - on the dyno the ECU said 7500 when the (EG5) rev counter showed almost 8500rpm (LO. Basically you can't trust it. I've got a Link, not a Honda ECU, so I chose my own limit. TBH, I've got no idea when vtec should be - mine was too high before I had it retuned (about 5400rpm - after power on the low cam had started falling away), and is now pretty low - 4800rpm I think. Maybe standard is in the middle?

I think my speedo is about 10% out - the odometer certainly isn't accurate (measured at the end of the motorway). Geez I must seem like an anal prick.

Based on my inaccurate speedo, I'd say vtec for me is about 100kph (over 100kph indicated) in 3rd, and I can probably do an indicated 160kph (really <150kph). - Boostin It - your Prelude tach/speedo might be accurate (in particular since you have suitable sized tyres).

Speed cut should probably be 180kph? Who knows...

[Genkei]

that dyno does read low compare to most . . . . .

extractor exhaust and throw in a pair of typeS cam will make it peak abit later . . . .

[Pommy]

im sure your speedo must be out, mines out for sure and i have a h22a civic, im doing 110 and cars are still happily passing me on the motorway! and revving to 8k on a stock block cant be right either so im sure there both out, im running same size tyres as you aswell so it would make sense for your tacho/speedo to be out too.

not that what i just said is helpful in any way

[OhSoSlow]

I still think you should do a run with open headers or similar as a comparison to see if you gain more power up top.. if nothing else it should sound pretty crazy in the room of doom..

Oh and the CSL was 20wkw more.. not 30wkw..

edit: factory gauges always seem to read a bit optimistic.. even cars that come factory with analogue and digital read differently.. the digital seems to be more accurate.. about 2-3km/h slower at 100km/h ..

[nva2nd]

Originally Posted by OhSoSlow

I still think you should do a run with open headers or similar as a comparison to see if you gain more power up top.. if nothing else it should sound pretty crazy in the room of doom..

Oh and the CSL was 20wkw more.. not 30wkw..

edit: factory gauges always seem to read a bit optimistic.. even cars that come factory with analogue and digital read differently.. the digital seems to be more accurate.. about 2-3km/h slower at 100km/h ..

Also with and with out the butterflys :wink:

[OhSoSlow]

now now.. no need to get all nature watch on us..

[Boostin It]

Originally Posted by CamB

Speed cut should probably be 180kph? Who knows...

jdm speed cut of 180kph..

[sirwags_np]

Originally Posted by Pommy

im sure your speedo must be out, mines out for sure and i have a h22a civic, im doing 110 and cars are still happily passing me on the motorway! and revving to 8k on a stock block cant be right either so im sure there both out, im running same size tyres as you aswell so it would make sense for your tacho/speedo to be out too.

not that what i just said is helpful in any way

my h22a wagon will pull 8000rpm on the tacho at limiter and the dyno dynamics rolling dyno confirmed the revs were reasonably accurate(about 7800 according to dyno)

also with an auto i get 125kmh out of 2nd easily and 180+ out of 3rd

[Shadow Sol]

yeah but the auto is only 4 stages or 4 gears, manuals have 5 hence why your 3rd stages is longer than our 3rd gear

[Pommy]

Originally Posted by Shadow Sol

yeah but the auto is only 4 stages or 4 gears, manuals have 5 hence why your 3rd stages is longer than our 3rd gear

exactly, i could get to 180kph in 3rd in the 300zx tt easily, and hella quickly too 8O

[doo0T!doo0T!]

Originally Posted by Pommy

exactly, i could get to 180kph in 3rd in the 300zx tt easily, and hella quickly too 8O

ZTT's are way under-rated in NZ, i have a lot of respect for them.
No wonder you did 180 in third they are geared for 300kmh at about 6000rpm

Did you know the USDM -Texas spec ones were actually good for it too. 180mph (300+Kmh) They had none of the bullshit emissions equipt choking them and there was no ecu de-tuning from factory. 300+ horsepower straight off the showroom floor. GTR/TT-supra territory.
I had a pic some Texan hillbilly took of his speedo stitting at 180mph on a freeway but I cant find it.
/off topic

[workhackSIR]

This dyno reads real low, so i wouldn't stress. Your probably more like 115wkw at TP

[Pommy]

Originally Posted by doo0T!doo0T!

ZTT's are way under-rated in NZ, i have a lot of respect for them.
No wonder you did 180 in third they are geared for 300kmh at about 6000rpm

Did you know the USDM -Texas spec ones were actually good for it too. 180mph (300+Kmh) They had none of the bullshit emissions equipt choking them and there was no ecu de-tuning from factory. 300+ horsepower straight off the showroom floor. GTR/TT-supra territory.
I had a pic some Texan hillbilly took of his speedo stitting at 180mph on a freeway but I cant find it.
/off topic

hell yea, the guys on the old 300zx forums were real moddest, 200wkw was an easy target and the cars were monsters. to bad mine wasnt the most reliable or best on gas or i would have kept it and manual conversioned for sure. you should get one and work it up like you did the crx, itd be pulling way over 300kw!

back to the topic anyway

[doo0T!doo0T!]

Yeah ok back on topic alright....

I woke up thismorning and heard that there was a "roll up and run" dyno day at torque performance, I turned up as the only Honda there amonsgst a whole lot of skylines, pulsars, primeras, cefiros, mitsi's and toyotas.
They were a good bunch of guys, no-one made any anti-honda remarks and were generally pretty interested in the car.

Anyway turns out the Hi-velocity dyno is reading a bit low as I managed a 112.3wkw run (150whp) but this time with torque figures and air/fuel ratio.
The air/fuel ratio read even lower than what it did at high-velocity and it managed to go lower than the readers calibraton at about 6750rpm and maxxed out at 10.1:1!!!! Thats super rich! A fair bit of potential power should be able to be released there.
i was stoked with the flat torque curve, it basically stayes the same from 2000rpm through to nearly 7500rpm
You can see torque peak just after vtec at 5400rpm and fall away slightly from there, Robyn at Torque thinks that peak and decline is indicating that the exhaust is resricting flow as expected and he thinks that incline straight after vtec will continue more with the bigger exhaust but I might loose a bit of torque lower down. At the momemnt it strangly has more torque at 2500rpm than it does at 4000 which is pretty strange.


This seems more realistic now, still not 120wkw but considering the rich mixture and tiny exhaust it's ok, so let the fun begin.....
I just picked this up from NZKW today.
2.5" straight through SUS34 stainless steel.

b16a2 (luke) will work his TIG magic on it next weekend, getting it properly hung and flanged for the H22a and a set of DC sports 4-2-1 headers will also accompany the new exhaust at the same time. :twisted:

Having just seen the mean job he did on Timmiblc's EK9 this boy has some mad TIG welding skillz 8)

Anyway lets let this thread die, my questions regarding the intitial low dyno figure have been answered so I'll fire up the old build-thread again and continue with the mods and dyno runs in there.

P.S I sneaked some tits in there for you Hayce.

[zerone]

that print out is in the way...what's behind it?


Keep us posted when you finally get those on your car! Wish we have a roll up and run here too.. maybe im just not looking enough.. oh well.