Hey whats up guys whats up? Well i got me a lil problem. I have a 92 CX and u sed to have a 94 GSR motor in it. But i blew the motor and I just put in a B16A from a 94 Sir II. and to make life easier I used the throttle body from a 2000 GSR so I could have it easy mounting the throttle cable. But for some reason V-tech wont kick in. The car runs fine all my fluids are fine no check engine light nothing just no vtech. I checked the wires and all but i cant see nothing wrong. Anyone have any ideas? thanx

 

How do you know VTEC is not kicking it? What method are you using to check?

 

Hook up a VTEC light to see if your vtec is working..but normally you should be able to hear/feel it.

 

Vtec does not work. any suggestions as to why

 

the ECU looks at the Oil Pressure Switch, TPS, and RPM for VTEC engagement.

I've read one time that with B16's its pretty common that the engine wont establish full oil pressure until it warms up a little. But im sure all cold engines take longer to reach correct oil pressure when cold.

You said you replaced your thorrtle cable and throttle body? Maybe it's lose and not opening tb all the way therefore the tps not signalling ecu to engage vtec?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iGfrequency &raquo;</TD></TR><TR><TD CLASS="quote">
I've read one time that with B16's its pretty common that the engine wont establish full oil pressure until it warms up a little. But im sure all cold engines take longer to reach correct oil pressure when cold.</TD></TR></TABLE>

im pretty sure all vtec engines do this. i know my h22 wont hit vtec unless its a little warmed up.

 

throttle cable works fine opens all the way. and i warmed engine up

 

I had a problem like that with my B16A too. Sometimd it would work, sometimes it wouldn't. In the morning time and after the engine was warmped up, the VTEC kicked in hard, but then by later on in the day when it was hot, VTEC doesn't engage.

 

we will ask again, how do you know vtec is not working. What exactly are you doing to check...

 

other than the VTEC problem, how much does it suck going from a b18 to a b16?

 

well unless u can tell me if u ever heard of a B16 that u cant hear the vtec or feel it when its suppose to kick in. If I said it didnt work i dunno why u have to keep asking.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris M &raquo;</TD></TR><TR><TD CLASS="quote">other than the VTEC problem, how much does it suck going from a b18 to a b16?</TD></TR></TABLE>

lol

 

to tell u the truth the only difference is the torque they both have 170 hp and torque is only 10 lbs less I think. But i got an alluminum fly wheel and a six puck unsprung so it feels the same i guess. Im just upset that i cant get any vtec

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SoftieB16 &raquo;</TD></TR><TR><TD CLASS="quote">to tell u the truth the only difference is the torque they both have 170 hp and torque is only 10 lbs less I think. But i got an alluminum fly wheel and a six puck unsprung so it feels the same i guess. Im just upset that i cant get any vtec</TD></TR></TABLE>

180 for the jdm gsr and slightly higher compression

 

Do you have a check engine light on at all?

 

well it wasnt a jdm gsr so 170 it is

and no check engine light at all i even tried jumping the curcuit to see if i got any thing but nothing

 

Just a simple suggestion, but why don't you try hooking up a vtec engagment light and see what happens. What ECU are you using?

 

i dont use a vtec light cause i know it doesnt work and im using an OBD-1 with a mugen chip