well I got around to wiring up a relay today to activate the vtec solenoid on my d16z6 today. I can't tell a diffrence at all. I can hear the solenoid click when I engage it manually just sitting there. any ideas? the motor only has 10,000 miles on it so I wouldn't think something was plugged up. I tried the search but couldn't find anything like I was asking. thanks.

 

help anyone? what is the point of this motor If I can't even feel it. I'm not spending money to hook it up right if it doesn't do ****. oh well. here we come turbo.

 

*DEAD*

haha, good question.

 

sohc is much harder to notice than dohc. drive out a gear and listen to differences before and after 5300rpm. you should hear the cam profiling switch over. regular sounding then all of a sudden WAAAAAAAAAAAAAAAAAAAAAAAA sounds like your beating the **** out of it. you can also check engagement via test light.

 

Yeah my best friend has a D16y8(lol might wanna check that code) in his 96 ek, and you cant feel it but damn you can hear it right around 5 grand.....it just pumps sounds like a friggin S/C....lol but thats just me

 

yeah you hear sohc more than feel

 

you can try disconnecting the vtec solenoid, then go drive and feel how crappy the high rpms are..

 

What ecu are you using? U really nead a P28 to get it to "feel right"

 

well i'm not sure if its wired up wrong, but i can hear it click so it should be doing something. we couldn't really hear any diffrence or feel anything. I have a p28 with all the plugs but don't know that its worth wiring in if i'm not going to notice much. need to get a zdyne i guess. better start saving.

 

If you want to hear the vtec switch clear get a intake...

 

It sounds like the real problem is that you are not running a proper VTEC ECU. Let's face it. The D16Z6 does not like the stock SI ECU. You may be externally activating VTEC. But the ECU is not providing ANY additional fuel to the motor to compensate for the bigger cam. So the VTEC system is basically useless. You could go Zdyne. But I personally prefer the P28. It is MUCH cheaper to wire up a P28 than to get a Zdyne conversion. Especially if you already have the ECU. Also, you will be able to use the D16Z6 distributer and thus have a cleaner swap. And yes, you WILL feel a difference.

 

If you get a vtec controller w/ a/f controls built in, you can give it a more agressive fuel mixture.

 

well I'm gonna try to find one factory in a car to ride in to see if I think its worth messing with.as soon as I can afford a zdyne, I think I'll go that way with a turbo setup.

 

I think going with JDM PW0 or PR3 is the best way to go with SOHC VTEC. This is from 2 years of fun with my SOHC VTEC civic. (going with B20Vtec soon).
VEry easy to integrate JDM ECU. I'll write up DIY install info on that topic soon. Check my web site in few weeks.
I suggest you engage your vtec at 6500 see what happens then.
http://www.angelfire.com/ca/DrOhm/hybrid.html

 

i disconnected the vtec solenoid and honestly it feels the same as when vtec is connected damn sohc

 

lol, that's why I went B16 DOHC VTEC

 

SOHC VTEC motors are very much different than DOHC VTEC motors. The SOHC's were designed with everyday street driving in mind - meaning evenly porportioned power throughout the entire rpm band. You don't feel any extra 'umph' when the VTEC X-over hits for the SOHC, because the VTEC lobes (intake only) were designed to continue were the low-cam lobes left off.

The DOHC motors are completely different - obviously you should expect more with both intake and exhaust lobes' lift & duration being variable, instead of just the intake lobe...

Simply put: The DOHC VTEC motors were tuned with mostly the VTEC lobe in mind, while the SOHC were designed for a balance in power between the (low and hi) two lobes.

 

i wonder if theres a cam for SOHC that can make it sound like a B18C1 w/ Skunk2 Stages 1's....like Skunk2nr's car....vroooooom....VROOOOOOOM

 

also it could be a lack of oil pressure. if you aint got oil psi you aint got vtec.

 

i got a msd rpm activator that would work really well with your setup.
i bought a v-afc so i can get more fuel at high cam.
at 5k rpm it screams but i got v-tec at 4600 now so when i shift i stay in it..
not as loud as 5000rpm activation.. but hey the higher the louder but the sohc stop low cam at 4600 so 4800 - 5000 is good..

 

Get a skunk2 cam for that motor and trust me you will hear and feel v-tec otherwise that motor isn't loud in alot of cars I mean my boy put one in his 88hf and it wasn't popin vtec at all untill he got the cam and valve train and **** done and now you can hear vtec hit like crazy