phantom knock?

[fubar_mdw]

I have been reading alot for the past few weeks on all kinds of knock
in our dsm's.
so far i havnt read about someone having the same exact problems I am having
so i hope this hasnt already been aswered.
The problem-
i just rebuilt my 95 gsx with a 6 bolt swap,
the valves all got bent so i ordered a remaned one from cimotorsports.net
got the head and put on a new cometic head gasket with arp head studs,
replaced all the gaskets and put the lifters in that where in the old head wich only had a few thousand miles on them (around 4k)
set the timing and it was off a little bit but not even half a tooth, and set base timing to 5
like i read on here to do.
when i got it all back together i went to start it and herd this tapping sound coming from the cas intake area, afraid of a spun bearing i dropped the oil pan and checked out the bearings but they looked fine,
the gas has been sitting for some time (5 months) and the injectors are great, new spark plugs and wires ive put some 93 octane in it and played with the cas a little but im almost certain the noise is coming from the cas or near it,
also when i pull the number 4 spark plug wire off the noise goes away, no other plug being pulled off makes the noise going away.
also tried the stethascope thing and the noise is deff not coming from the block,
any help would be great, i havnt drove the car at all since i put the head on, and ive read about new heads being noisy but id like to make sure before i drive it,
thanks

 

[fubar_mdw]

i had my wifes car jumping mine that could have been it

 

[fubar_mdw]

i put the camera near the cas cause that seems to be about the loudest area the noise is coming from,
do you guys think this could be rod knock

 

[Calan]

i put the camera near the cas cause that seems to be about the loudest area the noise is coming from,
do you guys think this could be rod knock

Highly doubt it. For one thing, it's at the top of the motor, and for another...it is thinner sounding than a spun rod bearing would be. It sounds more like something in the head, but it's hard to tell.

Anything's possible though I guess.

Can you shoot another video without the other car's sound adding to it?

 

[fubar_mdw]

Highly doubt it. For one thing, it's at the top of the motor, and for another...it is thinner sounding than a spun rod bearing would be. It sounds more like something in the head, but it's hard to tell.

Anything's possible though I guess.

Can you shoot another video without the other car's sound adding to it?

ya i got my battery recharged now,
but its going to have to wait till sunday now i have to work tonight threw sunday morning,
but i will take one during the daylight with no other car started.

 

[fubar_mdw]

well i went out to make a new video and its windy as hell so im going to have to wait till it dies down.

 

[Meklo_4G63t]

hey got the video hope this link works
YouTube - my dsm

it is definnitly a bearing

 

[fubar_mdw]

You think so, its not that thawping sound though just the ticking sound,
soon as the wind stops blowing ill get a better video

 

[fubar_mdw]

still dont know what this thwamp sound is but the exhaust is is cut off at the cat so its pretty loud but i hope this video is better

YouTube - another dsm knock maybe

 

[fubar_mdw]

lets say it is rod knock,
what would i do to double check that,
take off the oil pan and look for what,
the noise is coming from the top of the engine to
not the bottom

 

[fubar_mdw]

really hope its not rod knock here

 

[Calan]

man... I just don't know.

It's really hard to tell with out being there.

 

[fubar_mdw]

man... I just don't know.

It's really hard to tell with out being there.

ya i know, i dont think its rod knock though,
i think it has something to do with the timing or the fuel.
im getting ajustable cams and then ill retime it and set it perfect

 

[MountainDew]

Who assembled your motor? Was it a local machine shop or did you do it yourself?

 

[fubar_mdw]

Who assembled your motor? Was it a local machine shop or did you do it yourself?

i did all the work to it what little there was to do

 

[fubar_mdw]

i found a block for sale
it has 1g big rods, 2nd gen pistons, new main and rod bearings, balance
shaft eliminated honed and board over .20

 

[Meklo_4G63t]

i found a block for sale
it has 1g big rods, 2nd gen pistons, new main and rod bearings, balance
shaft eliminated honed and board over .20

Thats a engine u want to do a build on.....whats the price

 

[fubar_mdw]

400,
0 miles on it

 

[fubar_mdw]

just read through a forum about a guy with whats seems to be the same problems i was having
he said his fuel pressure regulator went bad,
well when i took my motor apart i had a non turbo head in my garage and the head i was going to use
i got the fpr's from the non turbo and the turbo mixed up not sure wich one i put on,
think that could cause a knock like i have

 

[fubar_mdw]

started the car today with the new aftermarket fpr on,
not sure what to set it at but the car started my crappy a/f gauge said i was running lean so
i put the safc to 0 all the way across the board it was on -20
and its still lean so ima mess with the fpr a little bit more,
but i put the stethascope back on and put it on the pcv on the valve cover and i herd the tick clean
as day and played with the cas and could here kinda a metal on metal scrap sound
so i deff thing its a rocker arm or callapsed lifter now, soon as it stops raining im going to
go back out and play with it some more
for now ill go to vfaq and see how to set my fpr

 

[HighBoostLaser]

just loosen the screw on top and turn the hex bolt with vacuum unplugged and set to 37psi or 43psi im nto to positive on this one but its pretty much simple work and i have a built block for sale ill ship if interested let me know pm me

 

[fubar_mdw]

got the fpr setup and set at 37pounds still have the knock though

 

[HighBoostLaser]

ok well then just use your safc to tune, not your maf-t

 

[fubar_mdw]

i took the valve cover off and tightend down the cam caps, dialed in the fpr as said
and still have the knock, going to take the valve cover off and put in some new lifters i have in the area the noise is coming from