I just bought a 91 hatch and put in a d16z6. I swapped all the obd1 electronics and did it the right way. When I drive it I can't hear the vtec x-over. I've heard you can't hear it on a sohc. I did add an intake, zex cam, and b16 throttle body when I had the engine out. I figured with all this you would hear or feel something? I put a light on the wire to the sylinoid so I know it's getting power around 4500rpm's and I can hear the sylinoid click when I put 12v to it. Could it be getting power and not working anyway, or you just can't hear it on a d16?

 

i can hear it perfectly fine on mine.....all i have is a intake and cat-back.... first and 2nd gear its not as audible..... but 3rd,4th and 5th easily

 

I wouldnt really expect to hear it unless you have some type of head work. I have my head port and polished with a 3 angle valve job and only then is it some what noticable to the ears.

 

its not as noticable like on twin cam vtec cars

but its there

 

o.k. I set my vafc to changeover at 5200rpm's and I could hear it....barely. Good to know it's working. I set it back to 4400rpm's and can't hear it anymore but I guess it's more audible with some more rev's. Thanks for the help.

 

i have a 94 dx with a d16 and my vtec kicks extremely loud for a sohc vtec. i was really suprised because i had an 02 with sohc e-vtec and u couldnt hear it at all. all i have is an intake

 

You really have to understand that you don't always have to hear it, all you need to know is that it does work. Most people think VTEC is the net best thing to white bread. You really need to come to the conclusion that you don't have a worked DOHC under the hood. Expect it not to do some things that you want it to do.

 

I can hear my friend's Y8 VTEC.

 

i hope i can hear my new JG head!

 

Would you rather hear it or feel it and know it's working?

 

ehh you need to build up oil pressure , i'd never set vtec that low

 

yes i can hear my d16z6 vtec not that load but its there

 

i can only hear it in 2nd on my y8 and you have to be paying attention to be able to hear it...i heard that if you can "hear" or "feel" vtec crossing over really noticably that it means its not working properly, and that it is supposed to be smooth when working properly...can anyone confirm that?

 

cna a 500 pound women see her vagina without a mirror

 

I can hear some audible changes when the cam is on the VTEC lobes. It's not nearly as loud as a B or a K motor, but it's there. Optimumly you woldn't hear, or feel VTEC. Due to different intake set up's there are different resonant tones that make the change noticible audibly, and due to lack of tuning you may feel VTEC, but if properly done, you'd never know it was there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimi &raquo;</TD></TR><TR><TD CLASS="quote">Most people think VTEC is the net best thing to white bread.</TD></TR></TABLE> but white bread sucks

i used to not be able to hear vtec, but yesterday i changed my timing belt and water pump, and i definitely know when im in lift and its quite an audible difference. ive got my theories, anyone else?

 

i have a custom CAI and a full straight thru Magnaflow cat, with a test pipe and stock header.

i can't hear my vtec at all unless my windows are down. my exhaust is way too loud. but with a decent intake and exhaust you should be able to hear it.

there should be some audible change with the vtec. it shouldnt be a night and day thing, but all in all it should be as smooth as possible.

 

and due to lack of tuning you may feel VTEC, but if properly done, you'd never know it was there.

well put, i have the d16z6 in my car, head work,cams,VAFC,among others, you can hear it kick in but not very loudly, but you feel it and thats all that matters.

 

aside from an intake, my motor is 100% stock, so hondas tuning sucks??

 

What they mean is that because the stock ecu can't change the rpm of x-over, you won't have an optimal tune. The main reason that you'll hear/feel vtec on a modified setup is because it can make more (or less) power if it was set higher or lower. A vtec that tends to snap your neck means that there's a sudden jump in power.

Since the small lobes make more power down low and vtec makes more power in higher rpm's, you want to set it so that vtec kicks in a tad after the vtec lobes would be making more power than the normal lobes. <u>Basicly, 'fierce vt@k' is the result of power lost due to bad x-over timing and/or bad x-over rpm.</u>

 

kinda but not a pop like a DOHC

 

get yourself a J's racing (or knock off) and you will hear it. I can hear it everytime it cracks, and I wouldn't have it any other way.

 

yes, but like a bitch!!!

 

a good I/H/E combo and yuo can hear it somewhat.

 

Take off your intake, take off your axleback, run out to a main road and wind it up through the top of 2nd gear (59/60mph in a Z6) and tell me that you can't hear VTEC. It's free and easy.