I know there are at least a hanfull of you out there. Anyone have problems with this setup? Some people on another board are saying it wont work and could loose power. I have heard nothing but good even on stock valvetrain.

 

i would also like to know this

 

i run mine with stock valvetrain, but i don't take my revs past 7400.

 

I kept the stock retainers but changed out to comp cam springs, since the zex website said upgraded springs required. When I got it I wasnt sure if the lift would bottom out the spring or not.

 

i ran a 59300 on 120,000mile stock d16z6 valve train for well over a year raping the **** out of it to 7600rpm with zero problems. My brother had the same cam & head (stock) and revved it to 8000rpm more times than i can count at the track and the rod bearings gave out before he ever had a problem with the valve train. but if you do the same and it breaks, dont blame me.

yes, we flirt with death.

and for some advice... set your valve lash slightly tighter than recommended or else it will sound like a diesel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Civicman86 &raquo;</TD></TR><TR><TD CLASS="quote">I know there are at least a hanfull of you out there. Anyone have problems with this setup? Some people on another board are saying it wont work and could loose power. I have heard nothing but good even on stock valvetrain.</TD></TR></TABLE>

I've heard the same thing about it making less power. It's because the valve doesn't close as fast as it would with upgraded springs. Your usable powerband is slightly decreased. If you don't plan on goin past the stock redline...stick with the stock springs...you won't miss much. If you wanna keep making power past 7k...upgrade the springs.

 

I ran it for a year with the rev limit at 7500rpm making 300whp with a bone stock head. I switched back to the stock cam this year though..

 

i had/have a zex 59300 cam on my stock head and revved to 7500 all the time, probably for about 5 months. I then got new valve springs/retainers and rev to 8k all the time, but power drops off slightly after 7800, which i beleive is what the zex cam is said to make power till

ohh and the zex website says you can use the stock valvetrain with the 59300, but when you get the cam from comp cams, the sheet that is provided from them says you need them, you really dont though and should be fine

 

Anyone remember offhand the rev limit when using the Zex/Comp springs?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">Anyone remember offhand the rev limit when using the Zex/Comp springs?</TD></TR></TABLE>

you would be safe revving to 8000, but as i mentioned earlier... its not the valve train you have to worry about. d series engine love to spin bearings when you rev them high

 

I run the 59300 with the spring upgrade and thats it....although i drove around for a while with it on stock valvetrain.

 

Just curious if any of you are running small turbos (T25, 14b, t3) with the cam and noticed if the cam kept making power in the higher RPM's even though boost fell off?

 

i never knew you could run strong springs with stock retainers...is this safe?

 

I once read something by Rocket, stating that oem SOHC valve springs should be good for high RPM and high lift usage. what do you guys think??

 

the oem d-series springs are good to around 9000 rpm on with a stock cam... when you get int the hihg lift long duration this number is significantly reduced.

 

i have the 59300 cam on my SOHC for the past 20k miles (about 1 yr and 8 mths)
andi rev it to 7500 fine

i have stock valves/springs/retainers

and if u want to know if its good... look at this

234whp at 6800 as well as my peak tq wich was 185wtq at same RPM
my tq curve always went up

 

I have istalled many of the 59300 on stock valvetrain with no problem to date with stock rev limit. All customers were very satisfied especially with the new bottom end power that the cam made. Some were turbo and some were NA.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H23 EG Hybrid &raquo;</TD></TR><TR><TD CLASS="quote">Just curious if any of you are running small turbos (T25, 14b, t3) with the cam and noticed if the cam kept making power in the higher RPM's even though boost fell off?</TD></TR></TABLE>

i ran a 14B @ 10psi.. held boost steady all the way to 7800

 

I run a t3/t4 50trim on my SOHC, i actually think i noticed quicker spool times. anyone else experience this?

 

I noticed that when vtec turns on it pulls much harder to redline. I plan to dyno the stock cam and then switch back to the zex cam and see how much power difference there is, but it might be a while since my trans is in the shop due to severe slipping after the rebuild (its an auto) and the guy told me today his tranny guy quit!

 

I thought the big advantage of the 59300 was above the stock rev limit. Is this not the case? If it is, it really wouldn't make sense to use this cam with stock valve train, but if not, sounds like I might be in the market for one...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ibiza &raquo;</TD></TR><TR><TD CLASS="quote">I thought the big advantage of the 59300 was above the stock rev limit. Is this not the case? If it is, it really wouldn't make sense to use this cam with stock valve train, but if not, sounds like I might be in the market for one... </TD></TR></TABLE>

thats silly to say
a cam with longer duration and higher lift will make more power thru the power band as well as its designed good

i noticed a gain thru the whole power band

 

Any of you with the 14b and the cam have a dyno chart I can look at? Thats what I have right now and wanna get an idea of what my plot should look like.

 

back from the dead for a stupid question...

i just swapped a D16z6 in my hatch and im about to boost.... could i run a the turbo zex cam even tho im NA for a while???

and i really wanna know.... where the hell does vtec hit on these motors?! i cant hear it for ****, even with a ported TB, AEM V2, High flow cat, and 2.5in apexi catback... WTF!? my dohc friends crack on me... lol

it starts to pull after like 5k so im guessin its there... no codes and its wired up right... i ran another selenoid too to make sure.

will this cam make it clearer? more audiable?

im into power, not rice and the sound of 'vtec' so im not WORRIED about it.. im just asking, do you guys hear yours and when??

 

back from the dead for a stupid question...

i just swapped a D16z6 in my hatch and im about to boost.... could i run a the turbo zex cam even tho im NA for a while???

and i really wanna know.... where the hell does vtec hit on these motors?! i cant hear it for ****, even with a ported TB, AEM V2, High flow cat, and 2.5in apexi catback... WTF!? my dohc friends crack on me... lol

it starts to pull after like 5k so im guessin its there... no codes and its wired up right... i ran another selenoid too to make sure.

will this cam make it clearer? more audiable?

im into power, not rice and the sound of 'vtec' so im not WORRIED about it.. im just asking, do you guys hear yours and when??