I8ayellowcrayon

First off, this is for a DOHC ZC, 9:1 compression, daily driven... Looking for about 300hp, no more than 20psi, about 8psi daily... Car is going to be street/road course and sometimes I may take it to the drag stip.

I have a .60/.63 T3 (Super 60 Compressor) that needs to be rebuilt... Would this turbo be ok for what I'm looking for (after rebuild), or should I get something else?

Also, does anyone use Race Engineering pistons in their motor? I'm looking at the XT series made by Wiseco. Its about the only piston I found thats forged and about a 9:1 compression ratio. Just looking for some feedback. TIA!

EITCP

go with rollerwaves (Endyn), you will never regret it!!!

I8ayellowcrayon

I'm wanting to have at least 9:1 compression, and the RW pistons don't go that high without using their bigger bore piston or milling...

EITCP

they have pistons with 8.8 compression and when you will give your head to machine shop to make it flat you will have the compression at least 9.0:1

I8ayellowcrayon

On Endyn's site, in the important notes section of the Roller Wave page, gives a little info about how they calculated the CRs of the pistons. The only way a 75mm ZC piston would get 8.8:1 is if the block was already milled (piston-deck clearance of .000"). If the head wasn't milled, the CR would be around 8.4:1, according to Endyn. I don't mean to argue with you or anything, and I could be wrong, and they could be wrong, but thats what I get out of it.

turboedc2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EITCP &raquo;</TD></TR><TR><TD CLASS="quote">go with rollerwaves (Endyn), you will never regret it!!! </TD></TR></TABLE>i agree

I8ayellowcrayon

Ok, I don't want 8.5:1 compression.... So no RWs...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I8ayellowcrayon &raquo;</TD></TR><TR><TD CLASS="quote">First off, this is for a DOHC ZC, 9:1 compression, daily driven... Looking for about 300hp, no more than 20psi, about 8psi daily... Car is going to be street/road course and sometimes I may take it to the drag stip.

I have a .60/.63 T3 (Super 60 Compressor) that needs to be rebuilt... Would this turbo be ok for what I'm looking for (after rebuild), or should I get something else?</TD></TR></TABLE>

LurkerS8

Wieso is the only company that makes pistons for the actual DOHC zc. Endyn says their pistons are for the DOHC zc but are really for the d16z6 and they give you the spec that the zc will have with those pistons, hints why the compression is 8:5:1 and no higher. I for one am going to run supertech 10:5:1 pistons for the d16z6 and that becomes around 8:7:1 in the dohc zc. The hks head gasket (The only metal head gasket for the zc) bumps up compression 3 points, so that puts u close to 9:0:1. Once you get the head and block machined your compression will be around the 9:1:1 mark. As for hitting the 300whp mark, it is very doable. I made 280whp and 230wtq @ 15lbs on 93 pump, on a dyno jet with the stock head and block dohc zc (9:6:1 compression) that was on a td06 17c turbo.

I8ayellowcrayon

That actually sounds pretty good, because I was planning on using the HKS headgasket. And of course, I would have to machine the head and block to make sure its all level for that headgasket... Thanks for the input!

As for turbo size... Is that T3 going to be too small?

Autoworks

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LurkerS8 &raquo;</TD></TR><TR><TD CLASS="quote">Wieso is the only company that makes pistons for the actual DOHC zc. Endyn says their pistons are for the DOHC zc but are really for the d16z6 and they give you the spec that the zc will have with those pistons, hints why the compression is 8:5:1 and no higher. I for one am going to run supertech 10:5:1 pistons for the d16z6 and that becomes around 8:7:1 in the dohc zc. The hks head gasket (The only metal head gasket for the zc) bumps up compression 3 points, so that puts u close to 9:0:1. Once you get the head and block machined your compression will be around the 9:1:1 mark. As for hitting the 300whp mark, it is very doable. I made 280whp and 230wtq @ 15lbs on 93 pump, on a dyno jet with the stock head and block dohc zc (9:6:1 compression) that was on a td06 17c turbo. </TD></TR></TABLE>
Have you run this setup yet? Did your compression come out to the 9:1 if so??

Autoworks

Actually NM.
I calculated it out with the SRP D series 10.5:1 pistons in the DOHC ZC should make the CR 8.95:1 with the OE HG...close enough for me.

zccrx

sweet, found some one with my same goals. ive been working on my zc dohc project for some time now but im doing this **** right. no corners cut. pistons rods sleeved its all done. small problem with rods clearing the lower part of the sleeve but the machine shop is gonna fix that. jg said its a normal thing for us d series freaks out there. im looking for some turbo cams any one have any good sugestions based on first hand use.

liam821

I run the Race Engineering XT Wiseco pistons in my dohc ZC. They have served me well, zero problems so far. I believe my motor has around 12,000 miles on it now. *knocks on wood*

I wouldnt recommend the higher compression d16z6 pistons in a dohc ZC because the higher compression pistons were all designed for NA and NOT boost in mind. So the first set of ring lands is normally higher up on the piston, and they pistons are lighter and not as strong.

With all that said, get a piston which is designed for the ZC to start with. Both the Endyn and Race Engineering pistons are made by Wisco, so they are both great.

I would like to get Endyn "rollerwave" pistons in my next setup, but 8.8:1 compression is getting pretty low compression. I would prefer 9.5:1 IMO. But the roller wave design makes nice power.

And I8ayellowcrayon, dont bother with 8psi on the street. Thats nothing on a built motor. I ran 18-20psi on pump gas on my old setup, no reason to built the motor if all you're gonna run is 8psi! With a good tune, and a well built motor, 18-20psi on pump gas and 30+psi on race gas wont be a problem with the right setup.

liam

zccrx

liam821 i saw your specs on your signiture. how serious did your get with your setup. my goal is 400. do you have turbo cams on that, and what kinda of tunning did u use to get those numbers.

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zccrx &raquo;</TD></TR><TR><TD CLASS="quote">liam821 i saw your specs on your signiture. how serious did your get with your setup. my goal is 400. do you have turbo cams on that, and what kinda of tunning did u use to get those numbers.</TD></TR></TABLE>

I have a pretty serious setup. I run a JG pro-series head, JG 1001 cams, full JG vale train, JG intake manifold, and a fully built/sleeved block (Crower rods Wiseco Pistons). I run the Neptune ECU with 880cc injectors. Those numbers were with my old sidewinder manifold and 60trim t04e setup at low boost. I've now swapped to a larger turbo and better manifold, and with more boost hoping for over 500whp.

liam

zccrx

when you say jg do u mean jg engine dynamics? wasnt your setup on home made turbo. you sayed side winder manifold so i kinda figured. any ways i got a quick question the jg 1001 turbo cams you mention are those regrinds?

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zccrx &raquo;</TD></TR><TR><TD CLASS="quote">when you say jg do u mean jg engine dynamics? wasnt your setup on home made turbo. you sayed side winder manifold so i kinda figured. any ways i got a quick question the jg 1001 turbo cams you mention are those regrinds?</TD></TR></TABLE>

Yes i mean JG engine Dynamics. I bought Abaz's old sidewinder manifold, but i have since sold it and run a AFI ramhorn. And yes, the 1001 are regrounds. There are only three companys that make ZC cams that i know...

1. honda (awesome quality, duh)
2. HKS (turbo cams, but really weak and small and worthless)
3. crespo (or something) you can get them on ebay - cheap and poor quality

Id pick number #1 and then reground them. Ive run them for 12k miles with zero problems.

liam

bradshit

hello I have a ZC

but i have a problem im running 14psi and cant get more than 300horsepower in my car , everything flatens at at 6500rpm , do you think i need other then stock cams and a nother intakemanifold , like JG turbo manifold and cams ???
what do you recomend .... to a zc turbo boy form norway , got no one to ask here ! im the only one with ZC turbo here

JG dobble valves springs
RPM T.B 70mm
ported top
darton MID
SRP pistons
hks headgasket
eagle rods
Dh stock ported manifold
Jg cam gears
peakboost turbo kit
750 injecotors
+ much much more ............
have the zc engine gold if you seen the photo of it ........

send me a mail on tips neeed every tip i can get !mahori@hotmail.com