Hi! So I installed zex 59300 on my d16z6 and now I have some problems when v-tec engages. After v-tec engages three of cylinders looses compression for some minute and then it just goes fine. What should be the problem? Should I readjust valvesprings? How much should I space them?

And second question.. Is it neccessary and worth to adjust cam gear when cam's installed (I have installed but it sits on 0 for now) on single cam engine?


Modified by roberts at 6:08 PM 4/23/2006


Modified by roberts at 6:09 PM 4/23/2006

 

i would defiantly re-adjust the valve lash adjust them to the specs given to you by comp cams, as for the adjustable cam geari found with my 59300 cam i got the most power at 0* cam timing so i dont think you need one

 

just out of curiosity, was the cam worth it? what kind of power increase do they offer? I have never kept a single cam in my car in my life, but Im thinking of it if these mods actually make some hp

 

i had gains of around 30whp on my boosted d, now with even more boost and a much larger turbo it wounldnt surprise me if i made 45more whp from the cam in the upper rpms i will swap in my stock cam and see what happens this summer if i get a chance

 

thanks man

 

Problem still persists.

Re-checked valve lash and it was ok! Didn't have to re-adjust it.

So I changed v-tec solenoid today and without changes- after v-tec engages cylinders looses compression for about minute.

Any other ideas?

 

bump 4 help

 

how can you tell that your cylinders are losing compression? sounds like the vtec crossover is too early....do you have a chipped computer is it a ebay chip?....i've had problems with those...the basemaps are all shietty.....buy a kenji computer....before his computer i had a skunk2 ecu and when it hit vtec it would flutter for a little while then pull....and this was on stage 1 cams..now i am running stage 2 and my vtec is at 6k...IDK

 

I went for engine diagnostics so they checked everything and told me, after kicking v-tec it seems like valves don't close properly.

I do have chipped P28 by Chrome! v-tec kicks at 5000 rpm

Also I disconnected v-tec solenoid & there are no problems at all then..


Still need advice and help!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by roberts &raquo;</TD></TR><TR><TD CLASS="quote">I went for engine diagnostics so they checked everything and told me, after kicking v-tec it seems like valves don't close properly.

I do have chipped P28 by Chrome! v-tec kicks at 5000 rpm

Also I disconnected v-tec solenoid & there are no problems at all then..


Still need advice and help! </TD></TR></TABLE>

bump

 

if the valves aren't closing properly AFTER vtec, it soundsl ike a prolbme with the cam, no? Like the selenoid isn't pushing it all the way over or something :-\

 

Really don't think so.. Any other ideas?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">if the valves aren't closing properly AFTER vtec, it soundsl ike a prolbme with the cam, no? Like the selenoid isn't pushing it all the way over or something :-\</TD></TR></TABLE>

well when the motor has vtec engaged the cam doesnt slide over you know that right, oil pressure locks a pin in the secondary cam lobe so it engages.

OP, check you LMA's (lost motion actuators) they might be the problem.

 

did you get the recommended upgraded valvesprings?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">

well when the motor has vtec engaged the cam doesnt slide over you know that right, oil pressure locks a pin in the secondary cam lobe so it engages.

OP, check you LMA's (lost motion actuators)<U></U> they might be the problem.</TD></TR></TABLE>

Can you tell me where can I find them under the hood?

 

Valvesprings? No, I am running stock. Most people say I don't have to upgrade them if I don't rev over 8000 rpm

 

under the valve cover you will see 4 nipple looking like things on the top of the valvetrain assembly, when you remove the top girdle on the assembly they will actually fall out of it... letme see if i can find a pic...

here right above the spark plug holes

 

OK,I found it in the Civic manual. Thanks for the picture!

So I checked them when I re-checked valve lash. Nothing special with this "lost motion assembly". Looked good to me. How can I inspect them and is it necessary?

 

bump 4 help again.. don't know how to fix this! Need your help Honda guru's

 

the LMA's are spring loaded and should slide back and forth easily when you push on them

 

They slide back easely.. What's next to be checked?

 

If you had to remove the vtec solenoid..did you double check the reinstallation?

 

What do you mean by double check the reinstallation? Camshaft reinstallation?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I Shot 50 Cent &raquo;</TD></TR><TR><TD CLASS="quote">If you had to remove the vtec solenoid..did you double check the reinstallation?</TD></TR></TABLE>

you dont have to remove the vtec solenoid....

 

So what the fck could be the cause of this trouble with vtec??? No one's curious what could be this?