Like the topic says....

D15 Vtec Camshaft on D16y8 head. Will this make any power or difference.

Lmk

 

i'm not sure how much of an increase but you should get some. the jdm d15b is the highest hp d-series at 135 to the crank a y8 is 120

 

no, why would it??? besides, it wont work if the d15 cam is from an obd1 head.

 

it will work, the cam in the d15b is comparable to the zex stage 1 cam. the head is the same as the z6 head so putting it into a y8 will work but be off by 5 degree's.

 

wat do you mean by off..??...good or bad??..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ej2vtec &raquo;</TD></TR><TR><TD CLASS="quote">wat do you mean by off..??...good or bad??..</TD></TR></TABLE>

all u need is a cam gear and you can dial the cam timing back in, or just set the cam a tooth off. the z6 cam will be retarded in the y8 head so u would need to advance it. do a search and i'm sure u can find the exact info your looking for.

 

D15B is a 3 stage vtec engine as well. dont know about the cam fitting a Y8 100% , but the rockers and some of the valvetrain are different for sure. D16A8 is prolly the biggest power D from the dealer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cranny &raquo;</TD></TR><TR><TD CLASS="quote">D15B is a 3 stage vtec engine as well. dont know about the cam fitting a Y8 100% , but the rockers and some of the valvetrain are different for sure. D16A8 is prolly the biggest power D from the dealer.</TD></TR></TABLE>

the your thinking about the vx motor, the motor he is refering to has the same head as the z6.

 

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

the your thinking about the vx motor, the motor he is refering to has the same head as the z6.</TD></TR></TABLE>

No, he's not. A JDM D15B has 3-stage VTEC.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TOV &raquo;</TD></TR><TR><TD CLASS="quote">Examine the SOHC VTEC and SOHC VTEC-E implementations. The clever Honda engineers saw that it is a logical step to merge the two implementations into one. This is in essence the 3-stage VTEC implementation. 3-stage VTEC is implemented on the D15B 1.5l SOHC engine in which the VTEC-E mechanism is combined with the power VTEC mechanism.

Many of us probably has laughed at the poor ignorant layman who said "I want power AND economy from my Honda". We know of course that power and economy are mutually exclusive implementations. Honda decided not to abide by this rule. Now, with 3-stage VTEC, we get BOTH power and economy !.

The diagram below illustrates the 3-stage VTEC implementation. The intake rocker arms have two VTEC pin actuation mechanisms. The VTEC-E actuation assembly is located above the camshaft while the VTEC (power) actuation assembly is the standard wild-cam lobe and rocker assembly.



Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency. When the right foot gets more urgent and/or above 2500rpm, the upper pin gets actuated. This is the VTEC-E mechanism at work and the engine effectively enters into the '2nd stage'. Now D15B 3-stage works in 16V mode (both intake valves works from the same mild cam-lobe).

Stage 2 operates from around 2500rpm to 6000rpm. When the rpm exceeds 6000rpm, the VTEC mechanism activates the wild cam-lobe pushing the engine into the '3rd stage', the power stage. Now the engine gives us the full benefit of its 130ps potential !

The 3-stage VTEC D15B engine is used on the current EK-series JDM Civic/Civic Ferio VTi/Vi together with Honda's new Multimatic CVT transmission. Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher. Stage-3 may not always be activated. The Multimatic transmission has a selector for Economy, Drive, and Sports mode. In Economy mode for eg, the ECU operates with a max rpm of around 4800rpm even at Wide-Open-Throttle positions.

The essence of 3-stage VTEC is power AND economy implemented on a 1.5l SOHC PGM-Fi engine. Many people mistakes 3-stage VTEC as a "superior" evolution of the power oriented DOHC VTEC implementation, describing DOHC VTEC as "the older 2-stage VTEC" and implying an inferior relationship. This is totally wrong because DOHC VTEC is tuned purely for high specific output and sports/racing requirements. 3-stage VTEC is in truth an evolution of SOHC VTEC and VTEC-E, merging the two implementations into one.</TD></TR></TABLE>

 

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

No, he's not. A JDM D15B has 3-stage VTEC.

</TD></TR></TABLE>

he's talking about the obd1 jdm d15b which has the z6 head, actually i'm not sure which he's talking about since he makes no mention of year in his posts.

 

theres 2 different D15B's , obd1 and obd2. and they are both 3 stage vtec. and neither has a Z6 head. the VX engine is a D15Z1 , thats vtec-e. also has a roller cam if im not mistaken.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cranny &raquo;</TD></TR><TR><TD CLASS="quote">theres 2 different D15B's , obd1 and obd2. and they are both 3 stage vtec. and neither has a Z6 head. the VX engine is a D15Z1 , thats vtec-e. also has a roller cam if im not mistaken.</TD></TR></TABLE>

Roller rockers

 

i was always under the impression that obd1 d15b's had the z6 head with a different cam, u learn something new everyday.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohc_boy &raquo;</TD></TR><TR><TD CLASS="quote">i was always under the impression that obd1 d15b's had the z6 head with a different cam, u learn something new everyday.</TD></TR></TABLE>

you are correct, the obd1 vtec d15b has a p28 head with a differant cam than the z6.

everything you have said so far is right.

 

roller cam goes hand in hand with roller rockers wouldnt you say? cant have one without the other , but thanks.

 

...lol nvm...i was thinking you were talking bout cranks.

 

yeah.....there are a few jdm d15bs. one is the equivalent to the usdm d16z6, and the another is the 3 stage (economy). im assuming he wants to use the 1 stage d15b vtec cam, which is not a good idea because they're all almost identical and not worth it to swap them around. i would use a d16y8 cam with a d16y8 head.

 

so do ya think i shouldnt use the cam after all

 

I eat my boogers, look P-:

 

you're alot of help buddy

 

if you want help here: yes it will work, will you notice a differance, NO, especially since you will have the timing issue to deal with, and most likely do it half assed, and your ignition timing will be screwed, and that will throw off your a/f ratio and in turn most likely give you worse performance than you had to begin with.

DID THAT HELP???