ok so this buddy of mine bought a 92 civic dx and when he bought it the man told him that it had a swapped engine in it and the man didnt know nothing about it, but when he would drive the car it sounded like it had vtec and the cover didnt say vtec it just has a regular honda cover so when we decided to look at the type of engine we saw that it is a D15B engine. So i just wanna know is the D15B engine vtec? i just kinda find it hard to believe that if his car is vtec, we are barely finding out 6 months later so is it??

i dont see a solenoid


heres the stamp



Modified by mcc361 at 4:51 PM 8/23/2007

 

If it sounded like it, and has a d15b stamp, it's vtec.

Also, look for the vtec solenoid. It's behing the valvecover (left side if your looking at it from the front)

It's like a 2" soda can looking thing. Hard to miss.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ek forever guy &raquo;</TD></TR><TR><TD CLASS="quote">If it sounded like it, and has a d15b stamp, it's vtec.</TD></TR></TABLE>
Not all d15b's are VTEC. From what I remember, there are 3 versions of it. The first is non-VTEC, the second is VTEC, and the third has the 3 stage VTEC.

 

d15b7's are non-vtec.

stock dx engine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowEGchris &raquo;</TD></TR><TR><TD CLASS="quote">d15b7's are non-vtec.

stock dx engine</TD></TR></TABLE>
He said his is a d15b (no number after the "b"). Unless he omitted that last digit...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">
He said his is a d15b (no number after the "b"). Unless he omitted that last digit...</TD></TR></TABLE>

nope i didnt omit the last digit

 

i realize that, i was just informing

 

Yep. The d15b (no last digit) only comes in vtec versions. The single, and 3 stage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">
Not all d15b's are VTEC. From what I remember, there are 3 versions of it. The first is non-VTEC, the second is VTEC, and the third has the 3 stage VTEC.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ek forever guy &raquo;</TD></TR><TR><TD CLASS="quote">Yep. The d15b (no last digit) only comes in vtec versions. The single, and 3 stage.</TD></TR></TABLE>

yeah but it doesnt have a vtec solenoid so is it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mcc361 &raquo;</TD></TR><TR><TD CLASS="quote">

yeah but it doesnt have a vtec solenoid so is it?</TD></TR></TABLE>

cant use vtec without the vtec solenoid

 

Will the stamping on the head tell you if its vtec or not?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nix94delsol &raquo;</TD></TR><TR><TD CLASS="quote">

cant use vtec without the vtec solenoid </TD></TR></TABLE>

then why is it stamped as a vtec engine is there any explanation

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mcc361 &raquo;</TD></TR><TR><TD CLASS="quote">

then why is it stamped as a vtec engine is there any explanation</TD></TR></TABLE>

there IS a powerband, my d15 had it, not exactly vtec but u can notice it in 3rd gear. and maybe the engine was taken out an put back in without the vtec hooked up cause someone didnt know how do to it?

 

Or maybe the head was swapped at one point. I thought there was a D15B non-vtec, and not the Y7

 

D16z6

 

how does this 3 stage werk? does it kick 3 times like a gsr does 2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laocivic &raquo;</TD></TR><TR><TD CLASS="quote">how does this 3 stage werk? does it kick 3 times like a gsr does 2?</TD></TR></TABLE>


what? gsrs have normal vtec, and 3stage=12v/16v/VTAAAKKK.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedooo &raquo;</TD></TR><TR><TD CLASS="quote">


what? gsrs have normal vtec, and 3stage=12v/16v/VTAAAKKK.</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laocivic &raquo;</TD></TR><TR><TD CLASS="quote">how does this 3 stage werk? does it kick 3 times like a gsr does 2?</TD></TR></TABLE>

It doesn't have "2 stages of VTEC"

It has "VTEC"

Then it has IABs (secondary butterflies) that open up to allow more air to flow.

Only one VTEC stage though.

REGULAR VTEC (like on a D16Z6) has "2 stages" - 16 valve regular, and "VTEC lobes" - VTEC-E uses 12v up to like 2500 RPM then uses them all for economy purposes.

"3 stage" uses the 2 regular stages (regular valve use, and VTEC) then it adds the 12 valve useage under 2500 on top of that.

So you use 12 valves up to like 2500, then you use 16 valves, then VTEC engages much like a Z6 or Y8 - 3 stages.

Like this guy said:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedooo &raquo;</TD></TR><TR><TD CLASS="quote">


what? gsrs have normal vtec, and 3stage=12v/16v/VTAAAKKK.</TD></TR></TABLE>

All VTEC motors have "2 stage VTEC" - it's 2 stage from the point that it's "on" - or it's "off" - "regular" or "VTEC" - the second bump in the GSR is secondary butterflies, not "another stage of VTEC."

Once again people on Honda-Tech confuse VTEC with Nitrous.

"stages of VTEC"

"I got 4 stages of VTEC here and I'm not afraid to use 'em!!"

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smileycvc &raquo;</TD></TR><TR><TD CLASS="quote">maybe the head was swapped at one point. [...] there was a D15B non-vtec</TD></TR></TABLE>
My thoughts exactly...

 

Here's another thought that just occured to me:

If you know where the solenoid should be, look for a block-off plate. If there is evidence of one being installed, then you probably have a d15b VTEC engine, but the previous owner "removed the VTEC".

I doubt that's the case, but it is possible.