pip9

I'm adjusting the valve lash on my new zex/comp 59300 cam with the zex springs i installed. Im just wondering if this is normal but to get the .007/.009 in/ex specs for the valve lash the adjusting nut is going pretty much all the way down to the top of the nut. is this normal??
--red circle is the #2 cyl how the stock cam and springs were (not adj to spec yet)
--blue circle is the #1 cyl that i just set to spec
((pix only shows the #1 cyl valve lash adjusted to spec (ex .009"))



Modified by pip9 at 11:24 PM 5/1/2006


Modified by pip9 at 12:29 PM 5/2/2006

splitime

Something else is wrong, there is no reason those retainers/valves should be at different levels. Make sure something isn't in between the valve and the head.... the spring (although stiffer) will not put the valve up higher.

drintegra

maybe the new springs seat causes the variation. Did you install the springs? are the springs seated well. Is this the way all the valves with the new springs, did you tap the springs and retainers after install to seat them? where are you putting the feeler guage?

pip9

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drintegra &raquo;</TD></TR><TR><TD CLASS="quote">maybe the new springs seat causes the variation. Did you install the springs? are the springs seated well. Is this the way all the valves with the new springs, did you tap the springs and retainers after install to seat them? where are you putting the feeler guage? </TD></TR></TABLE>

i installed the springs, its not the first time i've installed valve springs tho. its the same with all the valves. yep, tapped them after i installed them. putting the feeler gauge between the top of the valve and the tapet (i think its called).

drintegra

I guess I am no help then. I can tell you with mine, I do not have the springs but My stock ones vary quite a bit. Can't remember if it was so dramatic as yours but I do remember thinking damn that is a difference. No problems for me, stock valvetrain motor has about 220k now running strong. I will check the next time I adjust the valves. Good luck

EnzoSpeed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pip9 &raquo;</TD></TR><TR><TD CLASS="quote"></TD></TR></TABLE>


That's what happened to me when I tried to adjust them when it wasn't at perfect TDC.

inspyral

The cylinder you're adjusting needs to be at TDC.

pip9

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by inspyral &raquo;</TD></TR><TR><TD CLASS="quote">The cylinder you're adjusting needs to be at TDC.</TD></TR></TABLE>
not just tdc, 1 and 4 are at tdc at the same time so are 2 and 3, but u are only suppose to adjust one or the other depending on where the cam lobes are at.

i checked my timing multiply times. it should be perfect. I've done valve adjustments before. 1-3-4-2 crank pulley gets turned 180 deg counterclock wise blah blah blah.

the engine is a z6 head with a y7 block, z6 timing belt. when i had the stock cam gear on the timing marks wouldn't line up after i tensioned the timing belt, so i put on my adj. cam gear and the timing marks line up perfect. I set a screwdrive threw the spark plug hole to make sure i was at tdc.

could this zex cam just have small lobes on the cam??
I donno, im going to double check on the timing marks again tom.
?????


edit it is 1-3-4-2


Modified by pip9 at 11:19 PM 5/1/2006

adictionbass

ive always done 1 3 4 2 cams turn 90* between each adjustment (crank turns 180)

splitime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pip9 &raquo;</TD></TR><TR><TD CLASS="quote">not just tdc, 1 and 4 are at tdc at the same time so are 2 and 3, but u are only suppose to adjust one or the other depending on where the cam lobes are at.


i checked my timing multiply times. its perfect. I've done valve adjustments before. 1-4-3-2 crank pulley gets turned 180 deg counterclock wise blah blah blah.

could this zex cam just have small lobes on the cam??</TD></TR></TABLE>

When you are at TDC.... the tops of those valves will be identical... something is wrong according to the picture you took. Unless I am imagining the line of the head casting across the front of the picture.... and the tops are really even.

Soccerking3000

i dont see anything wrong, you havent set the rest of the valves yet, do that then see if there is an issue, the way i am look at is the blue circled one is going to open much more than the red one which makes sense correct?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">When you are at TDC.... the tops of those valves will be identical... something is wrong according to the picture you took. Unless I am imagining the line of the head casting across the front of the picture.... and the tops are really even.</TD></TR></TABLE>

there is something wrong, it is he hasnt adjusted them both yet one is at the stock position with a stock cam, not to mention its not on the same cylinder

red=#2
blue=#1

pip9

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">i dont see anything wrong, you havent set the rest of the valves yet, do that then see if there is an issue, the way i am look at is the blue circled one is going to open much more than the red one which makes sense correct?

there is something wrong, it is he hasnt adjusted them both yet one is at the stock position with a stock cam, not to mention its not on the same cylinder

red=#2
blue=#1</TD></TR></TABLE>

yeah, thats right blue is #1 cyl. red is #2 cyl.

I did go an adjust all the valves. they are look pretty much like the blue circled one

Soccerking3000

as long as everything is in spec i dont see why it would be an issue if the adjustment screw is that far down, they made it that long so it can have that amount of play

pip9

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">as long as everything is in spec i dont see why it would be an issue if the adjustment screw is that far down, they made it that long so it can have that amount of play </TD></TR></TABLE>

that was kinda my question. is this normal? for it to have to be adjusted so far

EnzoSpeed

No, it's not normal.

gnar kill

I think you didn't have the cam in the right place when you went to adjust the valve lash....I have the exact same setup and mine don't look anywhere near that...

splitime

I don't think anyone is understanding what I'm commenting on.

In the blue circle... its adjusted for the new cam... it shows that the arm was very loose and the piece needed adjustment to raise it up and get the proper clearance bettween the tappet and the valve.

That means that the red circle one should be loose and be able to be pulled up... Look at the retainer/valve height... it looks compressed, or valve is stuck lower.

Something isn't right.

Soccerking3000

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">I don't think anyone is understanding what I'm commenting on.

In the blue circle... its adjusted for the new cam... it shows that the arm was very loose and the piece needed adjustment to raise it up and get the proper clearance bettween the tappet and the valve.

That means that the red circle one should be loose and be able to be pulled up... Look at the retainer/valve height... it looks compressed, or valve is stuck lower.

Something isn't right.</TD></TR></TABLE>

but it isnt the same cylinder so it could be opening while the other is closed....

splitime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">but it isnt the same cylinder so it could be opening while the other is closed....</TD></TR></TABLE>

Rofl, I have no idea why I didn't process that . Gratzie

Basically... as has been said... those can't be compared...

Soccerking3000

pip9

the red circled one wasnt adjusted yet

EnzoSpeed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pip9 &raquo;</TD></TR><TR><TD CLASS="quote">the red circled one wasnt adjusted yet</TD></TR></TABLE>


Ohhhhh, now I get it. This was probably the most confusing thread ever.


I wouldn't worry about it - the new cam probably just has a larger lobe diameter.

Soccerking3000

the last horse finally finishes the race

mike93boost

i know exactly what youre talking about.. i just installed my zex cam in my otherwise stock d16z6 head.. i went to set the valve clearances and all mines were just likes youres circled in the blue.. i was like WTF when i first noticed it.. another problem i had was that i had to bore out the holes on the dizzy to get the ignition timing at 16 degrees which was also really wierd because everyone else on here said they didnt have to do anything like that when they installed the cam.

my car runs good though and i ahve no problems.. didnt really feel any power gain from the 59300 though. its not like what people say thats for sure.

Soccerking3000

get it tuned and then boost it