i go the cams in and theya re set at 0,0. mmy mods ar as followed, intake 2.5 inch exhaust usdm header and downpipe (1.75inch i think) str tb, hondata spacer.
it pulls very hard to abou t6 then moves slowly to 7. it seems like its barely making it, then at about 7 it makes a weird noise and wont go any farther.

btw i have a jdm h22a with a usdm exhaust mani

do i jstu need to get these tuned, or is because of my small exahust mani


Modified by c1civic at 1:13 PM 5/25/2004

 

no one has any ideas why my car is doing this

 

Well did you ever get it tuned? If you just bolted the cams in then you probably have an interesting A/F curve. If you spent the $700 for the cams blow the extra $50 and get a couple of baseline dyno runs with an A/F meter. It will tell you a lot about how/what your engine is doing.

What ecu are you using? Is it using the Knock sensor?
OBD-1 or OBD-2?
What Intake/filter? How many miles?
When is the vtec crossover?
How old is your O2 sensor?
Is your EGR connected?
How old/what condition is your cat in? Is it stock (civic? Prelude?)?
Any CEL's?
Who did your Wiring Job on your swap?
How old, what condition is your ignition system in?
What are your plugs gapped to?
What octane are you running?
What is the Hondata spacer? The insulating IM gasket?
What fuel pressure are you running? With what pump?
How old is your fuel filter?

answer these Q's and it would help. But GET THE DAMN THING DYNOED!

the Pirate

 

I bet your timing belt is off a tooth on the cam gears.

Who did the install?

 

well let's see

no fuel maanagement
header too small


what do you mean it makes a weird noise?

Did you install new valvesprings and retainers?

 

ok using p13 obd1 ecu
aem intake
i have a vafc, but i have not messed with it, seems to kick in around 5200ish
02 sensor is good
egr is not connected and thats my only cel
i did the wiring
93 octane, not sure on the gap of plugs
the hondata im gasket
not sure on fuel pressure

also the vafc says its kickin it, but no power
i have a jdm mani im going to put on

would puttin the stock cams bak in fix this prob

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">
i have a jdm mani im going to put on

would puttin the stock cams bak in fix this prob</TD></TR></TABLE>

what is a JDM IM? If it's dual stage there is nothing different about it.

I'll ask you again did you install aftermarket valvesprings and retainers?

 

no aftermarket valvesprings..i meant to say jdm exhaust manifold i am.....

 

it kinda feels like a fuel cut off or rev limiter

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">no aftermarket valvesprings..i meant to say jdm exhaust manifold i am.....</TD></TR></TABLE>

jdm exhaust manifold is exactly the same on the top as usdm.


guess what, no aftermarket valvesprings = coil bind

Your motor is in major trouble

edit: I check the skunk2 site and it says valvetrain upgrade recommended....weird I would have thought it would be required...anyway if you motor is making a really weird noise at 7000 rpms then the problem is related to the cams obviously...it's mechanical

 

i was thinkin abot not runing the, should i jsut yank them out and try the stock ones

 

could the gears be off a tooth

 

tell me this...let's say the cam gears are off a tooth....what is the explanation for the noise?

 

hmmmmm no idea...could it be a fuel cut offor something like that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">i was thinkin abot not runing the, should i jsut yank them out and try the stock ones</TD></TR></TABLE>

do that or get or upgrade the rest of your valvetrain.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">could the gears be off a tooth</TD></TR></TABLE>

You car would probably be running worse if that were the case.
Did you time the motor yourself?

 

yeah i timed it. seems to be runing pretty good until vtec kicks in. I had no experience with the stock cams. I put the skunk2 ones in when i was doing my swap

 

I think you need a valvetrain upgrade...sounds like coil bind and valve float...surprised you haven;t broken anything yet...

also the rockers could be bottoming out...check the rockers for wear

 

well hell im broke after paint and wheels , these things are coming out and will be for sale thanks for the help...will let u know what happens after i ge teh stock cams back in there

 

Get adjustable Cam gears, a fuel tuning device, then goto the Dyno for some tuning. It'll make a WORLD of a difference. You can't expect your car to make mad power by slapping in bigger cams. Tuning is the key word.

 

get it tuned and type slower. less errors

 

well i got the valve cover off nad im lookin at the cams..what should i look for to see if its mechanical

 

rotate the motor and see if the rockers are bottoming out...

then spin it at 7000 rpms and se if the springs bind

onspect the springs for damage

 

rev to 7000 parked with the valve cover off?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">rev to 7000 parked with the valve cover off?</TD></TR></TABLE>
no

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c1civic &raquo;</TD></TR><TR><TD CLASS="quote">rev to 7000 parked with the valve cover off?</TD></TR></TABLE>

He was kidding about that, imagine the mess you would make with the oil, you would look like a little kid playing in the mud