preludedriva

[url=http://youtube.com/watch?v=8Q6c3hl5FXM[/url]

i really hope not

4k on the bottom end

just did an oil change i think its been doing this for at least 3k miles now

i was told its valve tick but yeah what do you guys think?


EDIT:

poor man R ctr pistons b16 head oem headgasket

rocket valvesprings and titanium retainers with skunk2 stg2 nono pro cams

intake adjusted to .007 and exhaust .008


Modified by preludedriva at 1:50 PM 10/18/2007


Modified by preludedriva at 10:24 AM 12/31/2007

forcefedferio

it certainly sounds like it from the video. i hope it isnt for your sake though.

Luserkid

Hard to tell off your video, sounds almost like pinging even. Videos dont help unless if its really bad. If you been on this for 3k then its not rod probably valves. Try a valve adjustment. Is the motor tuned?

preludedriva

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">Hard to tell off your video, sounds almost like pinging even. Videos dont help unless if its really bad. If you been on this for 3k then its not rod probably valves. Try a valve adjustment. Is the motor tuned? </TD></TR></TABLE>

i did a valve adjustment 007 on intake and 008 on exhaust thats what the spec sheet is for the stg2 skunk2 cams

and yes its tuned on crome pro

you dont hear the noise til i rev it past 1k at idle you dont hear it at all

Froth

Sounds just like when my buddies MR2 let go of a rod bearing, almost identical to the sound of the 200k mile D16 rod knock his brother had too. Sucks, hopefully it's not that but it sure sounds like it.

-Froth

ifIexplode

When my y8 spun a bearing it sounded nothing like that. It was more of a intermittent noise and A higher pitch. like a bell. and it didnt last much past a 100 miles.

lilracerhb

Who put your engine together

preludedriva

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lilracerhb &raquo;</TD></TR><TR><TD CLASS="quote">Who put your engine together </TD></TR></TABLE>

i did used acl bearings torqued down to spec

speedooo

I cant really tell from the video...but try to pinpoint where the noise is coming from. why dont you drain the oil and check to sparkly flakes or drop the pan and take a look inside

preludedriva

it sounds like its coming from the head at cylinder 1

preludedriva

i got rocketmotorsport springs retainers oem valves and skunk2stg 2 cams with 3 angle valve grind if that makes a difference?

preludedriva

k i just dropped the pan

no shavings whats so ever at all

BDC the rods and i pushed up on the bottom caps and i dont get any movements at all

erm i beleive its in the head maybe a loose rocker or something? lma? valve adjustment has been done



Modified by preludedriva at 1:52 PM 10/18/2007

preludedriva

could it be wristpins? when i bought my ctr pistons they were already inside the pistons and then i went to the machine shop and had them mounted on the rods

AdamB18C1EK

my buddy had a 2.0 itr with 12.5:1 pistons and pro1s...honestly. i dont think thats rod knock. his engine had the proper valve lash and everything. ticked EXACTLY like that. and he had a WS2 exhaust so when he was really beating the **** out of it you could hear it plain as day. i highly doubt its a rod knock its probably valves more than anything

preludedriva

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AdamB18C1EK &raquo;</TD></TR><TR><TD CLASS="quote">my buddy had a 2.0 itr with 12.5:1 pistons and pro1s...honestly. i dont think thats rod knock. his engine had the proper valve lash and everything. ticked EXACTLY like that. and he had a WS2 exhaust so when he was really beating the **** out of it you could hear it plain as day. i highly doubt its a rod knock its probably valves more than anything </TD></TR></TABLE>

i hope you are right lol

yeah my valves are adjusted correctly i did em twice

are we on the same page? the ticking is normal i was talking about the thumping noise when i give it some throttle

pdiggitydogg

I dont think its rod knock either.
What is your cylinder bore (exactly)?

preludedriva

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pdiggitydogg &raquo;</TD></TR><TR><TD CLASS="quote">I dont think its rod knock either.
What is your cylinder bore (exactly)?

</TD></TR></TABLE>

81mm

if theres no shavings or play in the rod caps then it wouldnt be rods knocking would it ?

preludedriva

we took a scope to the entire motor each cylinder on the block and even the head


the sound seems to be coming from the intake side on clyinder one

we also pulled 1 plug at a time to see if the sound got quieter and it sounded the same taking 1 out each time

Sloshy

you you should check for oil pressure sounds like bad oil pump to me...

slowcivic2k

Bottom end noises tend to be dull and clunky sounding, like the sound represented in the video. Head noises are sharp and high pitched, just like a tap. The area to blame will have a sound proportional to the parts density, and ability to shed that sound. Keep this in mind, heavy parts clunk when you drop them, and small parts make a higher pitch tapping sound. This applies in an engine as well, and is a very good way to diagnose noise.

The valvetrain is clearly audible, and I will dismiss that as the origin based on what I've heard.

Disable your fuel system and crank the engine and see if the pitch and frequency change.

If the knock doubles up, the wrist pin or rod bearings are to blame. If you suspect a cylinder, remove the plugs in question to remove all stress from the components. This way the rod will have no force pressing down on it, exposing a bad clearance on the upstroke, and down, which should reveal a double knock if this is the case.

If you are questioning any part of your engine, please make it known, clearances and all. It all helps.

Hybrid_Ej188

sounds like it to me

b16a3delsol

It really sounds like a bottom end noise to me but im no expert in things going bead.

preludedriva

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowcivic2k &raquo;</TD></TR><TR><TD CLASS="quote">Bottom end noises tend to be dull and clunky sounding, like the sound represented in the video. Head noises are sharp and high pitched, just like a tap. The area to blame will have a sound proportional to the parts density, and ability to shed that sound. Keep this in mind, heavy parts clunk when you drop them, and small parts make a higher pitch tapping sound. This applies in an engine as well, and is a very good way to diagnose noise.

The valvetrain is clearly audible, and I will dismiss that as the origin based on what I've heard.

Disable your fuel system and crank the engine and see if the pitch and frequency change.

If the knock doubles up, the wrist pin or rod bearings are to blame. If you suspect a cylinder, remove the plugs in question to remove all stress from the components. This way the rod will have no force pressing down on it, exposing a bad clearance on the upstroke, and down, which should reveal a double knock if this is the case.

If you are questioning any part of your engine, please make it known, clearances and all. It all helps.</TD></TR></TABLE>

i did take 1 plug at a time it sounded the exact same each time

its a new oil pump too as well

slowcivic2k

Do not run the engine like that. Disable all fuel, and crank it over. If you suspect the number 1 hole, remove its plug, and listen for a double knock. The cranking of the engine will place the least load on that hole, permitting it to knock around more. Oil pressure will hide a knock, thats why its important the engine not run during the test.

preludedriva

we also used a scope to try to determine where the noise was coming from

it was coming from the head clyinder 1 on the intake side we suspect a lma