Auto b16a2

[tRipitaka]

How does the Auto b16a2 match up to the Manual b16a2 ?
Doesn't most of the power of the b16a's come from top end towards redline, which auto's don't usually reach ?
Does that mean VTEC won't engage ? (which i know is a dumb question)
Please educate me

[SPEEDCORE]

My guess is that it will act like any other auto. Dependant on load and throttle position, the car will stay in gear longer dependant on these inputs.

[tRipitaka]

But doesn't VTEC engage at a certain RPM ?
for example,
if VTEC engages at 6000rpm.. Does the Auto rev up to there ?
Or is the ECU programmed to rev to VTEC then change gears ?
I never see my auto rev past 4000 that often, and that's only if I floor it ..

[Tu88y]

My guess is that it will act like any other auto. Dependant on load and throttle position, the car will stay in gear longer dependant on these inputs.

A friend of mine just advised me that it all depends if the Vtec is design to kick in at RPM or the throttle body. Example your feet could be on the throttle and your car is only doing 2000rpm. Im not sure if this is much help.

[aussie_legend]

i have an auto (96 CRX si) and it redlines at around 8000rpm when u out your foot down. The VTEC will kick in around 4500 unless you have an adjustable VTEC controller as i do :D (change b/ween 3k-7krpm). VTEC depends on other factors such as oil pressure and temp not just the rpm
The only differnce i find with the auto is the speed off the mark till 2.5 - 3k rpm.
Trust me in Sydney traffic the auto is a blessing

[CTR Coupe]

auto B16a motors have less power than the manual ones. cant remember how much less. something about less power to be nicer to the auto trans. think it was 150hp but dont quote me on that. Its still going to redline if keep your foot flat to the floor.

[Kawasaki]

A friend of mine just advised me that it all depends if the Vtec is design to kick in at RPM or the throttle body. Example your feet could be on the throttle and your car is only doing 2000rpm. Im not sure if this is much help.

I think throttle is only with i-vtec, correct if wrong.

[**Ghost**]

I thought that auto boxes made you lose power through drivetrain loss as well...

[tRipitaka]

auto B16a motors have less power than the manual ones. cant remember how much less. something about less power to be nicer to the auto trans. think it was 150hp but dont quote me on that. Its still going to redline if keep your foot flat to the floor.

Shouldn't the motors have the same amount of power ? i.e. If I convert to manual, I should be able to have the same power output ?
But does the auto b16a variant provide a decent amount of power ? Would VTEC be noticeable ?

[CTR Coupe]

Changing the gearbox will not change the power. They are detuned to be nice to the auto gearbox. I can’t remember if this was talked about here or on another forum.

[tRipitaka]

Changing the gearbox will not change the power. They are detuned to be nice to the auto gearbox. I can’t remember if this was talked about here or on another forum.

dw, dw
i found it on another thread on this forum..
thanks anyway =]

[Disciple]

tripitaka do u mind posting the thread to me please.. because im in the same position as you are.. i have purchased an auto frontcut and im being supplied with a type R g/b and spoon ecu and i was wondering if i would have the same power output as an original manual.

[tRipitaka]

Nah nah,
The other thread just states that the JDM b16a2 auto variant has a lesser power output to suit the auto transmission..

[Disciple]

so that means that its got to do with the ecu? internals? auto transmition? thats the answer i want to find out so in time i can rectify the problem! :P

[CTR Coupe]

ECU may fix the problem.
but theres so many factors.
the japs have a habbit of slightly altering the engines to suit a purpose.

they may have alterd the compression as well to make less power(internals or head gasket).
but honestly i have no idea what they did.

[JDM.Power]

well's correct me if im wrong...i reckon the ecu will fix it...an the b16a2 auto engine does have less power i guess around 100-110kw not much a difference but slower than the manual one! the auto takes to long 2 reach the redline

[tRipitaka]

So the auto b16a2 would have significantly less power than the manual variant.. JDM = 170hp ? so auto version would be 150-160hp ?

[JDM.Power]

yes tripitaka ...around those figures..il reckon get a manual g/b an ecu an toda cam's will gain the loss power from the auto engine :)