myflyintegra

I have a D15b2 which im rebuilding, And i also have a D16z6 wit a busted piston or something. Would i get more power out of the D16z6 or the D15non vtec block with D16vtec head? Which is more powerful. Cuz i have intentions on doin the mini me to my eg.jus wana kno what ppl think. Let me kno. Thanks guys p.s. What is (vtec-e) Any differance? no clue. let me kno

Jimster480

D15 nonvtec block would make more power. because d15's have longer strokes and taller heads while D16's have shorter strokes and shorter heads. So Long stroke + short head = high CR which = more power. Vtec-e is a reverse vtec where it basically pop's out of vtec at a lower RPM. And the Vtec is for economy instead of power. The higher lift cam is the regular cam instead of the vtec cam. But it starts in vtec, and pops out of it instead of popping into it. Its basically a huge LOL, but it works. Usually changes the head from a 12 valve setup to a 16 valve setup when it pops out. because the vtec-e cam is so fkn low its basically like having only 1 intake valve.

myflyintegra

well is that not as good as a reg vtec d16 head. Would i do good gettin a reg vtec cam? or i dunno. Im kinda jus piddling around and figureing things out before i start puttin it back together ya kno. but that was a gtreat help.

weavertime1

iTrader: (2)

From what I have seen, without tuning, the mini me you speak of actually makes a bit less, or at best the same power as a stock Z6. As for the Vtec-E it is out of the civic VX, and its purpose is to improve fuel economy, not performance. Hope that helps. Good luck whichever way you go!

myflyintegra

well i was told that the moto was out of a 94 ex but not 100% on that ya kno. thanks though

Jimster480

its also out of a HX. And it can make a badass boost setup. But it stil ldoesnt make as much power as regular vtec. But no D15 to D16 makes more power than a Y8/Z6. For example a B7/Y8 Minime has around 10.6CR (Y8 has 9.6) and makes around 140HP.

weavertime1

iTrader: (2)

Actually the D16Z6 has a longer stroke than the D15B2. Also your shorter and taller heads and blocks thing is slightly confusing?

myflyintegra

well motor in my car now is D15B7/ motor in shed torn apart ready for rebuild is D15b2 and the vtec motor i have is a D16z6. omg im confused. lol but at least your all helpin me. lol

weavertime1

iTrader: (2)

I believe the D15B2 is out of an older ('88 - '91) civic/crx dx. It is basically the same thing as your D15B7...1.5, 16 valve, sohc, non vtec. Hope that helps!

myflyintegra

the D15b2 ihave came out a 89 civic dx hatch, D15b7 is in my 95 civic right now and jus got the d16z6 yester day. was told it was out of a 94ex

myflyintegra

well something is wrong. i have a D16z6 sitting out side and the velve cover says that its a vtec e. which only came on the 1.5 so that the hell. lol

myflyintegra

well figured it all out. The d16z6 has a 1.5z1 VTEC E head on it. Was told it was all z6 but no clue. so thanks for all the help guys.

lunch_box_4_life

what is the code on the head on the d16z6 block
????

myflyintegra

The head code is P07-1 . The guy i got it from jus told me its from the 95 VX. of course. And he said that the z6 block has a cracked piston, but i havent checked into that yet. Well now again im in search for a 1.6vtec head again

weavertime1

iTrader: (2)

BTW...a P07 head is the VX head as you are told, however it is def. not a good idea if you are looking for increased power...Good luck!

myflyintegra

well i was thinkin bout takin this damn vtec-e b/s head and puttin it on my d15b7 or rebuilding the z6 block.. What do u guys think about this? lmk

Jimster480

What you are really looking for is a head though. Because i was thinking about it after I talked to you yesterday that the D15Z1 or w/e the VX head is, is a D15 head and will be tall unlike D16 heads, so it wont make more power. It will just add VTEC-E which doesnt make power anyway lol.

myflyintegra

so either way would it even be worth the swap to put that stupid head on the b7 or the z6?

weavertime1

iTrader: (2)

What do you mean by a "tall head?"

94EG8

No. If you use that head you'll likely need to chip and tune anyway, that combination yeilds something like 12:1 compression (the VX used dished pistons, the D15B7 doesn't so you end up with insanely high compression) the VX head doesn't flow very well though if i remember correctly.

Jimster480

most D15's have shorter strokes and bigger combustion chambers in the heads. Compared to the D16's. aka they have "taller" chambers.

and i didnt know that the VX had dished pistons, if that was the case then ya the CR will be SUPER HIGH and it will def need chip and tune and hihg *** octane gas. I just figured that a D15Z1 followed the same king of setup that most of the other D15's had. Short stroke with tall head. But if it had dished pistons, then thats a whole other thing...

myflyintegra

well i guess that is why the guy blew out a ring, or what ever he did. Since he had the 1.5 VTEC-E head on a z6, he said he thinks he either blew a ring or cracked a piston. But i dunno. Dont see that happenin too often. So VTEC-E = no good. Well now again in on the search for a (1.6 VTEC head) lol. I guess i will be specific next time. HEY thank all of you for the help. For real

Jimster480

np