slvrcvc93

I have been working on Honda/Acuras for a long dam time and i never ask nor I've never seen a post on the topic so let see if we have any genius out there that can quiet my curiosity.

These are All of Honda's VTEC Solenoids What are the differences.
Left to Right



This is the standard stock USDM DOHC VTEC solenoid looks the same as the JDM accept the top portion is about a 1/3 smaller



This is the standard SOHC VTEC solenoid from the inside almost looks identical to the dohc just the plug faces a different direction and the oil inlet is from the side not the same as the dohc.



Last but definitely not least the standard JDM VTEC solenoid the top section looks alot bigger than the others people claim that the "vtec is louder" I wouldn't know my car is turbo lol but is there any difference ?

Is there really a difference can I put the SOHC on the DOHC ? other than the inlet there essentially the same the gaskets all line up the same anyone have anything on this?

slvrcvc93

Bump where are al those honda genius out there that talk **** when im wrong lol i have a valid question what no one can give me at least some kind of answer???

OMGWTFBBQ!

I'm no expert, but I wouldn't go putting an SOHC solenoid onto a DOHC engine.

95sloweg

i cant help your question but i got a question for you. are the two gaskets for the vtec the same for a SOHC and a DOHC. i need to replace both gaskets on my SOHC. sorry for jacking your thread.

gsrhatch2356

it is just a solenoid so it just opens and transfers oil so its not like it changes oil pressure or anything crazy. I could only assume that if it bolts up it should work.

slvrcvc93

the gaskets are identical just so you know

superfast666

the dohc opens more than the sohc

EkFG

its funny because I asked my self that question awhile back but never really bother to answer it.

BlackoutVTi

I'd like to know as well. I'm in for a little info.

mortificationrock

^^ im with him....

JDMFreak

i have a question for the OP, can you tell what year are these vtec solenoids are? i have seen on a obd2a jdm gsr vtec solenoid where it doesn't have an oil temperature plug (green)...

HonDelso

there are 3 different ones. 88-91, 92+ dohc and then the sohc one.
the 88-91 is bigger than the 92+ one but there is no difference from what i can feel. if it sounds louder how so? i mean sure it raises pressure, but the noise change in the advancement of the cams, not the oil pressure.

obuhmyuh

i wonder what would happen if u put a DOHC on a SOHC... hmmm

1CaMw0nDeR

This is what happens when u put a DOHC on a SOHC...

wmac

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMFreak &raquo;</TD></TR><TR><TD CLASS="quote">i have a question for the OP, can you tell what year are these vtec solenoids are? i have seen on a obd2a jdm gsr vtec solenoid where it doesn't have an oil temperature plug (green)...</TD></TR></TABLE>
x2
i have one too, can post pic later today
i think the head was a jdm d15b

obuhmyuh

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1CaMw0nDeR &raquo;</TD></TR><TR><TD CLASS="quote">This is what happens when u put a DOHC on a SOHC...
[pic] </TD></TR></TABLE>

thats fukcin sick. im gonna pick one up

haha

slvrcvc93

You know I have 6 solenoids 3 you see here and I have 3 motors I'm building and 1 JDM 95 b16 thats in 1 of my coupe right now and I'm putting a Sohc in my hatch.

I think its time I put it to the test seeing that no one else has Tomorrow 4th July I will be doing some test runs on my local back streets and I will do a compression test on my b16 just so I have some test data before hand.

The motor in the background is what will be replacing my B16 but it wont be ready for another 2 maybe 3 weeks I still need a GSR oil pan lol, but before than we can play!

Also my boy has a fairly stock Sohc in his car I can take out the solenoid in his car for some test and yes I will take some pictures.


Modified by slvrcvc93 at 7:43 AM 7/4/2008

obuhmyuh

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slvrcvc93 &raquo;</TD></TR><TR><TD CLASS="quote">

Also my boy has a fairly stock sohc in his car I can out the dohc solenoid in his car for some test and yes i will take some pictures. </TD></TR></TABLE>

i doubt it'll do anything/much, but im curious to see what happens. post here or PM me.

hondamark35

it's a switch.. if you put a bigger switch on your fog lights will they shine brighter? no. it would allow for more current to pass safely,

..this is the idea with different switches. larger motors with larger parts need more oil moving through the solenoid to get the job done.

things that do effect vtec performance: bigger cam, bigger ports, chipped ECU... that's about it.

slvrcvc93

Yea I hear what your saying but since no one has taken the time to just try it!? I will Lmao!

apexi_rsx

it may not fit. i tireid mating a y8 sohc solenoid on a z6 and it doesnt fit. the holes may be close but no cigar.

slvrcvc93

Well i did my little test and they do fit now for the results motor was being used was a 95 sir b16 ecu was obd1 p72 ecu. The vtec does work with absolutely no problem! other than the fact that they look different vtec engaged at the same time, sounded the same, other than the engine bay looking different.
They Solenoid on the left is from my old 95 sohc and the right is the stock dohc b16

this is the stock Dohc

This is the stock sohc solenoid

So all and all same component just looks diffrent but it does work! so stock killing your selfs looking for a dohc one you can use a sohc one and it will do the same job!

baller status

None of those are JDM. The JDM solenoids don't have the integrated oil pressure switch. There is no light green connector.

VTEC is either on or off. There is no "popping louder". It's controlled by the ECU. The solenoid just fills with oil and physically pushes a pin. It can't push harder any more than you can push your light switch harder.

obuhmyuh

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by baller status &raquo;</TD></TR><TR><TD CLASS="quote">None of those are JDM. The JDM solenoids don't have the integrated oil pressure switch. There is no light green connector.

VTEC is either on or off. There is no "popping louder". It's controlled by the ECU. The solenoid just fills with oil and physically pushes a pin. It can't push harder any more than you can push your light switch harder.</TD></TR></TABLE>

i think if you read the whole thread, you'd find that he already knows that. hes just doing it for ***** and giggles. he was just experimenting and showed us what he found. /thread

H.A.R.T B18C1EG6

iTrader: (1)

I just want to ask why the hell are all 3 of your solenoids rusty as f*ck?