HotWheelz

11.5 compression, b20 bottom, stock girdle, SIR head, crower stage 2 cams with valvetrain, stock b16a2 manifold (untouched) with b16a2 TB, AEM CAI, 1.6 jdm header 4-2-1 with extremely small primaries.. 2.5inch exaust with cat and piping bolted up.. p28 running chrome pro. 310cc injectors

with powersteering, and 17wheels.

we stopped the dyno at 7300rpm because the motor only has 2000miles..

it registered on a dynojet at 188whp and 138TQ.. af tuned for 13.2 and timing at 23 degree's in vtec.

now around here we only have 91 avail.... so i know timing was retarted quite a bit when tuning the car so the question would be... how much timing are you guys using with your 92mm stroke b20 bottoms...

only had 11 pulls, running kinda late in a residential section. so got the basemap pretty much done on the street, with the innovative lm3, just need wide open runs for max power. the whole basemap is 13.2-13.5 with o2 off.

-no power pulleys, no cam gears, stock intake track, **** header... is it good results?

the graph keeps on climbing. temp 30 degrees humidity 68 (it was raining outside) sae was 183 / 135 actual was 188 / 138 .... running 23 degrees timing.

basically the timing was reduced big time for break in, did the af timing perfectly, and used the dyno for maximum timing power, first run was at 22 did 181, added one degree jumped to 188 everywhere's in the curve...

so what are you guys running for timing.. just so i can get an idea before i go back..

is there 200whp in this with 17"'s and ps hoocked up or i have to sacrifice them to get it .... i'll get he graph later was running late for work.

JerseySiPOS

iTrader: (2)

first, is the engine healthy, compression results? Is this a 92mm stroke? sorry...seems a bit confusing. Anyway, leave everything alone, and change one thing at a time, especially since you have crome pro.

Try a JDM 4-1 header or even a ctr header stock first. My suggestion would be to use some ctr cams. This combo alone with everything you already have there can yield at least 200/155. Those are just dyno numbers though, because when you make a change and since you have a wideband, you can just leave the timing where it is and only adjust the fuel to reach your target a/f.

And when you make a change, you will see where you burn more or less fuel compared to the last combination.

HotWheelz

why would i swap headers? the customer brought the over with the following mods assembled and ready to tune, so i'm tuning with those installed, i'm not going any changes to the hardware, i basically just wanted feedback and what do people run for timing in vtec on allmotor builds with a 92mm stroke. i'll find out anyways when i go back, the start is still strapped just didn't have time to finish it for the night just thought i'd make a post to get your guys input until i got bakc to the shop to finish the tune. if my numbers were off or something.

JerseySiPOS

iTrader: (2)

is there something wrong mechanically? Seems like there is something wrong, especially since it has a 92mm stroke. Under the conditions you mentioned, i would still think the baseline is very low for the displacement, but that's why i mentioned making some of the changes. Didn't realize it's not your car, sorry.

Is it a 2.0L or 2.1L?

HotWheelz

crv bottom with the stock crank isn't the stock crank 92mm or 89mm? stock bore

Runnerdown

stock crank is 89mm. who said anythig about 92? 23 degrees is low, you can add more timing. Those numbers sound about right for the mods.

HotWheelz

185whp/140tq SAE dynojet at 7300rpm, actual was 195/?? don't remember hahaha badmonday hahah *bur* hahah will wait another couple weeks to rev out further. PS hookedup, exaust bolted, no tricks, 89in tank.. going to find a good IM and TB right now using 2nd gen b16 im and TB.. header really needs to go!! the primaries are like 1 1/2inch, but bumped up at the flange.. really crappy! still made OK... power will post graph soon.

JerseySiPOS

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HotWheelz &raquo;</TD></TR><TR><TD CLASS="quote">185whp/140tq SAE dynojet at 7300rpm, actual was 195/?? don't remember hahaha badmonday hahah *bur* hahah will wait another couple weeks to rev out further. PS hookedup, exaust bolted, no tricks, 89in tank.. going to find a good IM and TB right now using 2nd gen b16 im and TB.. header really needs to go!! the primaries are like 1 1/2inch, but bumped up at the flange.. really crappy! still made OK... power will post graph soon. </TD></TR></TABLE>

you were asking in the beginning why change the header, but that was pretty the only thing i recommended to change or mod. im using the same throttle body and manifold on my B20vtec, and i have a ported head and a modded CTR header and a 3" exhaust. My power curve kicks *** up to 8000 rpms, but that's what i built it for. You were asking me before, why change the header, but you are going to change the manifold and TB now? What rpm are you trying to emphasize, because once you go with shorter runners and a bigger plenum, which your probably gonna do, your gonna see a dip at 6500 rpms to about 7800 rpms, but you'll make the same power above 8000 rpms. So in the end, your not going to make any more power, just less average HP and less tq.

Phatch99

you should be making more power then that with that setup..... some stock b20vtec are already pretty close to the some whp as yours with simple bolt ons... something just doesn't seem right..... please post your dyno graph...

EF'n Sedan

iTrader: (1)

i'm curious on how much the power/tq. diff would be with an 87.2mm stroke and 12:1-12:5CR on basically a stock head also!!

ALLmotorTYPES

you should be making more power with that set up

HotWheelz

exaust bolted, with muffler, timing 23.5 degrees, starting to let off at 7200rpm, customer didn't want to reach beyond 7000 before he had some miles on it...

uping the timing altered the airfuel a bit in the range, but mostly 13.2-13.6 after 7000 was 13.7-13.8, timing isn't tapered beyond 5k, all 23.5.. running out of time, had to close shop so will run this until more miles on it then will rev it out, header is pretty small, and also running b16a2 "unported or portmarched" with stock papergasket and b16a2 tb. ps hoocked up, no pulleys or crank pulley, stock flywheel, running CM stage 3 clutch though. no headmilling, b16a2 head, stock vavles, running 11.5 je's stock size, with eagle rods, stage 2 crowers, no cam gears. new honda oem bearings "stock color code" running 3-30oil.. 17" wheels also running b16a2 tranny.

for some reason when the last map was uploaded vtec cam on later, was supposed to be around 5000. weather was a bit humid just ended raining... had other cars to run will redo....