the jdmchop

on a fully built race motor whats my limitation to reving on a boosted Z6

i want to know how high is everyone reving too and if thats the limit that this motor can do?

the jdmchop

bump for the night

integracivic94

bump cos i'd like to know too!

RyanEJ8

What is your definition of a "fully built" race motor?

the jdmchop

78mm sleeved block
ported head along with the nessasary componets for the valvetrain
T61 running on alky

RyanEJ8

8000-9000rpm depending on the cam and what valvetrain components you buy. You're going to need a nice set of rods and rod bolts too.

ELSpool

From what I've read, the issue of reving to high on a D-series becomes fast piston speed from the r/s ratio causing alot of stress on the walls and rods, and ZEX man had mentioned something about tranny gearing.

the jdmchop

keep on coming

RyanEJ8

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

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

Keep what coming, we just answered your question.

the jdmchop

keep any and all info retaining my question coming

knowledge is power

the more input i get the better

( not to say yours wasnt good )

but anyone with some exprience in reving a D high please add to the thread

ladysman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ELSpool &raquo;</TD></TR><TR><TD CLASS="quote">From what I've read, the issue of reving to high on a D-series becomes fast piston speed from the r/s ratio causing alot of stress on the walls and rods, and ZEX man had mentioned something about tranny gearing. </TD></TR></TABLE>

Good reply. I plan on revving mine to 8000 without problems. Again, like Ryan said, you need a cam that can provide power to arond 8000. I think the consensus is the 59300 cam.

HTH

the jdmchop

who makes the best valve train for the D

Rocket makes a FI cam but i havent realy looked into that much

i would love to use his products seeing how his stuff isnt all mainstream and still preforms better than the others

Rocket can you help me out?

5thgencivic

Zex Man doesn't rev over 7000 on his even with the zex cam and valve spring setup(I think that's what I read?). Not sure if his head is ported though.

the jdmchop

only revs to 7k?

i would think these motors will make power past that no?

ladysman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 5thgencivic &raquo;</TD></TR><TR><TD CLASS="quote">Zex Man doesn't rev over 7000 on his even with the zex cam and valve spring setup(I think that's what I read?). Not sure if his head is ported though.</TD></TR></TABLE>

His isn't done up as far as I remember. I think vavlesprings, that's it. He can jump in though and correct. me.

Turbodcx revs to 8500 I believe.

5thgencivic

Let me see if I can find his post, because I could be wrong...

the jdmchop

wow this thread is flying lol

keep it up

more input from the racers

kranked91dx

no prob's up to 9K rpm
if you have:
balanced crankshaft and rotating assembly
acl crank bearing and rod glider bearing
good rod bolt and rod
spring, retainer, and of course a cam that can provide you with the need's of your engine up to 9000 rpm.

in other word, you need's to really want it to rev that high,
Kranked

5thgencivic

Here are some quotes from ZEX Man's replies in this post https://honda-tech.com/zerothread?id=718965
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZEX Man &raquo;</TD></TR><TR><TD CLASS="quote">
Cylinder Head:
D16Z6 SOHC V-TEC cyl. head (unported)
D16Z6 intake manifold (port matched)
Stock throttle body
ZEX™ valve springs (912-16)
ZEX™ camshaft (59300)
Performance distributor with MSD wires

I shift at 7200.......On the dyno, the engine makes peak power at 6900, so a little over that has proven to be the best for et's. FAST makes some very nice stuff, I really like their datalogger. I have learned a bunch about the car/engine since using it.

ZEX Man
</TD></TR></TABLE>

With a ported head/intake manifold power should peak higher in the rpm range I would think.

the jdmchop

so zexman is running a basicly stock head minus the cam and springs!

i think with a better flowing head reving high will be atainable

blackeg

wow i would think that the 53900 in his engine would make his peak power over 7000 rpm's. stock peak hp is at 6600, as i found out first hand when i dyno'ed.

M.A.R.C.

not to jack the thread but what u guys think would be a good rev limit for my setup...

2000 D16Y8 head
Crower springs and retainers
Zex 105300 cam (the Y8 version of the Zex Z6 Street/Strip cam)
turbo is a precision SC61 (stage 5 turbine wheel)
the bottom end is a Z6 with 9:1 JE's and Eagle rods but with the y8 the cr should be like 9.5:1 or so. My guess is 8000-8200 rpm would be safe