can you use the stock valvetrain with this cam? or are upgraded valves necessary? which one would you suggest?

thanks..

oh, btw. i read zexmzn say in one of his post, he said if he didnt use n20 his turbo would never fully spool.

 

I am running stock valvetrain, but I will be upgrading shortly. It is highly recommended that you buy upgraded valve springs.

 

I am running skunk 2 springs and ti retainers

 

damn you guys are making me want one!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chpt1onBOOST [DMV &raquo;</TD></TR><TR><TD CLASS="quote">]damn you guys are making me want one!</TD></TR></TABLE>


Might as well.. you only live once

 

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


Might as well.. you only live once </TD></TR></TABLE>

tax return is here, and time to go shopping!!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cccya &raquo;</TD></TR><TR><TD CLASS="quote">tax return is here, and time to go shopping!!!!
</TD></TR></TABLE>
already been shoppping since friday
eagle rods, JE pistons, boost gauge, 450cc DSM inj, MSD 6 BTM, intercooler, BOV, turbo rebuilt by cheapturbo, and the full motor built...

i better leave something for the gf and kids LOL

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">
already been shoppping since friday
eagle rods, JE pistons, boost gauge, 450cc DSM inj, MSD 6 BTM, intercooler, BOV, turbo rebuilt by cheapturbo, and the full motor built...

i better leave something for the gf and kids LOL</TD></TR></TABLE>

Ditch the BTM and get some type of EMS.

 

Where do you guys with this cam in your turbo sohc's have its timing set at? I have mine in my y8 head set at 3 degrees advanced right now on my z6 cam gear which I'm guessing is somewhere around -2 degrees retarded on the cam because at around 5 degrees advanced on the cam gear I can get about 18-20 degrees of ignition timing with the dizzy fully advanced. Do you think I should keep the cam retarded when I put on a turbo setup or should I set it to 5 degrees advanced(what I think is about 0 cam degrees).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">how many sohc guys in here are boosting with a zex 59300 cam? Just wondering how you like it and if I do go boost whether or not I should keep my cam in or throw the stock cam back in.</TD></TR></TABLE>
Lots of overlap...all wrong to me, IMO. Sure, it might make more than a stock piece, but, I'd look into a cam with high lift, moderate duration and stock overlap, or a regrind, which will give you exactly that, but limited spec...maybe crower 2T or a custom-spec crower; if the zex makes power, then the type of cam i mentioned will make MORE power.

 

Has anyone tried the SKUNK2 cam i saw the spec sheet looks like it has alot of lift but little duration.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by builthatch &raquo;</TD></TR><TR><TD CLASS="quote">
Lots of overlap...all wrong to me, IMO. Sure, it might make more than a stock piece, but, I'd look into a cam with high lift, moderate duration and stock overlap, or a regrind, which will give you exactly that, but limited spec...maybe crower 2T or a custom-spec crower; if the zex makes power, then the type of cam i mentioned will make MORE power.</TD></TR></TABLE>

We tried the whole "tight overlap" theory on the last round of cam development. The SOHC head likes a fair amount of overlap in boosted applications. When we ground up a typical "turbo" cam design like you mentioned, it made an extra 20 hp below 5000rpm, but lost 30whp above that, all the way to the 7200 rpm redline. I have still not found a cam that makes more power on boost than the 59300. Four valve heads with modern turbos, that have very efficient turbines, do not work well with "old-school" cam design theory. As far as regrinds......a very bad idea. The whole geometry of the valvetrain gets screwed-up and will lead to reliability issues, particularly with the valve guides.

ZEX Man

 

We tried the whole "tight overlap" theory on the last round of cam development. The SOHC head likes a fair amount of overlap in boosted applications. When we ground up a typical "turbo" cam design like you mentioned, it made an extra 20 hp below 5000rpm, but lost 30whp above that, all the way to the 7200 rpm redline. I have still not found a cam that makes more power on boost than the 59300. Four valve heads with modern turbos, that have very efficient turbines, do not work well with "old-school" cam design theory. As far as regrinds......a very bad idea. The whole geometry of the valvetrain gets screwed-up and will lead to reliability issues, particularly with the valve guides.

ZEX Man[/QUOTE]


ZEX Man is the man!! Now send me a free 59300 . Where did you guys buy the cam, direct from the ZEX website?

 

i got mine from nipponpower.com I think it was around 260 shipped or something like that

 

Just wanted to say that you guys running a tighter lash be careful not to burn a valve over time. I had a big cam in an old toyota years ago and it was noisy in the begining but over time it quieted down. The exhaust note stayed loud though. You could def. tell when the thing got on the cam. Oh this was an isky th99 the valve lash spec was .032 intake and exhaust . I ran it down to .018 intake and .020 exhaust I think its been a long time now..its cool you can kind of move the powerband around tightening up the lash like that. At least on the pushrod motor you could eheh.

 

I'm going with the Crane#252-0012 cam in my D. I would jump on the 59300 bandwagon,like the specs of it but I think Crane makes higher quality product...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D-Man &raquo;</TD></TR><TR><TD CLASS="quote">I'm going with the Crane#252-0012 cam in my D. I would jump on the 59300 bandwagon,like the specs of it but I think Crane makes higher quality product... </TD></TR></TABLE>

What areas in product quality does Crane do a better job than ZEX/Comp Cams? Is it the cam core, design, heat treat, machine finish? No attitude at all, just curious what your thoughts are, for my own knowledge.

Thanks,

ZEX Man

 

three things that come to mind right away are

1..Crane products have been used in many OEM applications...never heard of that from comp cams

2..I've heard of a Zex Cam or two breaking in half over the years(heard the same about crowers too) but who knows,something else couldve been wrong like the cam cups being overtorque...

3...kinda relates to #2,I believe crane has a better billet core to start with.





Modified by D-Man at 2:02 AM 3/14/2004

 

I'd probably listen to Matt. He obviously knows something, I mean he's only in the top 30 fastest power adder street class Hondas. https://honda-tech.com/zerothread?id=607396

Not to mention for us D Series guys, I think he's the only SOHC on the list.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D-Man &raquo;</TD></TR><TR><TD CLASS="quote">three things that come to mind right away are
2..I've heard of a Zex Cam or two breaking in half over the years(heard the same about crowers too) but who knows,something else couldve been wrong like the cam cups being overtorque...[/i]</TD></TR></TABLE>
Well, since we are talking about SOHC here---I have not heard one instance of a SOHC Crower unit breaking...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by builthatch &raquo;</TD></TR><TR><TD CLASS="quote">
Well, since we are talking about SOHC here---I have not heard one instance of a SOHC Crower unit breaking...</TD></TR></TABLE>

95civicracer on this board had one break,ask him

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZEX Man &raquo;</TD></TR><TR><TD CLASS="quote">I have been running the 59300 for the past four years on my D16Z6 turbo/nitrous race engine.

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

Can you tell me why my engine got destroyed due to the 59300 cam? What happened was the retainer or whatever the clip thing on one of the intake values broke off and the valve just dropped into the cylinder hitting pistons and locking the engine up and cracking head and pistons etc.

this is about 6 months or so after the cam was put in..... why did it happen?

also i notice that my valve rocker pads, the ones that contact the actual camshaft, there was a deep impression, like it's been worn in from the zex cam, about at least 1mm deep. on the stock cam, there was no dent or impression into the rocker pads at all...

explain this!!!

 

were you running stock valvetrain?

 

yup, but those guys told me that if i ran stock redline and all it should be fine.....

 

Sounds like it was installed incorrectly. What vavle clearances were used?