StRacer

Is it better to do the mini me or just get an ex engine? I searched but found a lot of links.

oxSLEEPERxo

d16z6, it all depends on what your plan is, are you going to go d series turbo or d series all motor?

Royal_C!ty

iTrader: (3)

i too went through this same question , and i ended up going w/ the many me since it was cheaper ... so i guess if money's not the problem go w/ the whole Z6 but if it is than just go w/ the mini-me (the poorman's z6.)

e jay one

i think it all depends on if you have the tools and time to do a motor swap or just a head swap. and if you do do a motor swap and want to stay d get a jdm d15b it makes more power than a d16z6. d15b is the best single cam in my opinion.

StRacer

yea, money is limited to do fixing body damage on my hatch. So i think i will go with the mini me. thanks guys

whitecat31

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StRacer &raquo;</TD></TR><TR><TD CLASS="quote">Is it better to do the mini me or just get an ex engine? I searched but found a lot of links.</TD></TR></TABLE>

Check the laws in your home state. If it is legal to do the switching of Heads on your engine, than consider the mini-me. There are other benifits, like the Mini-me acting as an excuse to change out water pump, and timing belt, and to tune the engine. These are things you should do once in a while anyway. The Mini-me increases the compression. Although, if you increase your compression too high, I hear you have to increase the octane of the gasoline you use. Anybody, know about that?

StRacer

hmm never heard bout the octane, but that would make sence cause that is what u have to do to turbo motors.


Modified by StRacer at 5:00 PM 4/19/2005

MiMiK

iTrader: (1)

i've heard higher compression motors need a higher octane. i wouldn't know from personal experience cause i've never had the fund to mess with it.

BauleyCivic

Mini-me's require 93 octane

thrty8street

iTrader: (7)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">Mini-me's require 93 octane</TD></TR></TABLE>

yes they do

StRacer

y is that?

9hatch6

is it bad to turbo a z6 head with y7 built block? and do i have to use that high of an octane?

BauleyCivic

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

Gasoline explodes when you compress it too much, this is how diesels work without spark plugs. Diesel fuel has a low octane rating, and so when it is compressed enough it explodes on its own.

When you increase the compression ratio of an engine, you are making the fuel more susceptible to detonation (gasoline exploding by being compressed instead of sparked). When detonation occurs on a motor that is not designed to take it (like, a honda civic motor) the motor can incur significant damage.

The mini-me raises the compression of the motor by a full point (at least...if you're using a Y8 head its 1.5 points), and you need to run a high octane fuel so that the fuel won't explode before spark occurs.

9hatch6

no no. im using a z6 head but a y7 block. i wanna build the block with all new pistons and rods. could i run plus fuel and not super?

BauleyCivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 9hatch6 &raquo;</TD></TR><TR><TD CLASS="quote">no no. im using a z6 head but a y7 block. i wanna build the block with all new pistons and rods. could i run plus fuel and not super?</TD></TR></TABLE>

Depends on the compression. If its going to be around 10:1 or above, you need 93. Unless you like hearing a pinging sound and want to rebuild your motor every month.

With turbo, you always want to run the highest octane gas available. The effects of detonation are exponentially worse under boost, so you always want to make sure the car is tuned properly and has a high octane fuel in it.

thehatchninja

vtec motors have stronger bottom ends, and you can use LS rods if you want to do a low budget build on a d16

9hatch6

yeah but my bottom end is from the d16y7 the block. its not as strong probably as the z6 bottom end

WildPig

I live in AZ, we don't have 93 octane, highest we have is 91, and thats what I have been running in my mini-me (y8 head and gasket and y7 block) for about a month since I did the swap.

Is that ok?

And why is it that you guys say mini-me's which have about 10:1 compression need 93 octane when s2000's out here have no problem with 91 octane and about 11:1 compression? Fill me in a little bit......

VRD^sam

MINI MEEEEEEEEEEE

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WildPig &raquo;</TD></TR><TR><TD CLASS="quote">I live in AZ, we don't have 93 octane, highest we have is 91, and thats what I have been running in my mini-me (y8 head and gasket and y7 block) for about a month since I did the swap.

Is that ok?

And why is it that you guys say mini-me's which have about 10:1 compression need 93 octane when s2000's out here have no problem with 91 octane and about 11:1 compression? Fill me in a little bit...... </TD></TR></TABLE>

I've been running 87 octane on my y7/y8 mini me since december and have had no problems too, but I'm also widnering if it's ok or should I switch to a higher octane? I always thought y7/y8 mini me's made more compression than stock y8's because they put down better numbers than y8's do.

WildPig

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

I've been running 87 octane on my y7/y8 mini me since december and have had no problems too, but I'm also widnering if it's ok or should I switch to a higher octane? I always thought y7/y8 mini me's made more compression than stock y8's because they put down better numbers than y8's do.</TD></TR></TABLE>

I think what he's saying is to run the highest octane you have available, just to be safe.

Why do you run 87? Running a higher octane helps in like every way possible: a little more hp, slightly better gas mileage, better running engine, etc. I never put anything but 91 in my cars.

And I think you have it the other way around, mini-me's have more power because of the higher compression from the different pistons in y7's.

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WildPig &raquo;</TD></TR><TR><TD CLASS="quote">
Why do you run 87? Running a higher octane helps in like every way possible: a little more hp, slightly better gas mileage, better running engine, etc. I never put anything but 91 in my cars. </TD></TR></TABLE>

That's not true. I've done lots of research before and the best octane for your engine is the one the manual says to use.

WildPig

The manual doesn't say to put a y8 head on and you did that ........

Higher the compression of your engine = the higher octane you need to use to keep it from detonating.

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WildPig &raquo;</TD></TR><TR><TD CLASS="quote">The manual doesn't say to put a y8 head on and you did that ........

Higher the compression of your engine = the higher octane you need to use to keep it from detonating.</TD></TR></TABLE>

Your previous statement was very broad and did not specify a high compression motor, but rather any motor.

BauleyCivic

Heeltoe's site used to have specifications on all of the D-series pistons, and I remember the Y7 pistons having a greater dish than the Y8 pistons.

This means, that with a Y8 head gasket and Y8 head, a Y7 mini me will actually have lower compression than a straight Y8, because the pistons are dished more on the Y7.

All the stuff I talk about with mini-me's needing high octane, i'm referring to the B7 mini-me's because they have flat top (higher compression) pistons.

About the gasoline, 91 octane will work fine too, just use the highest available.