Topic: whats that noise?.... (video) *update* (Read 16456 times)

snm95ls · « **Reply #30 on:** November 17, 2009, 04:15:55 PM »

Quote from: highroller54 on November 16, 2009, 11:24:36 PM

Quote from: 88dx on November 16, 2009, 08:38:19 PM
Quote from: turbohf on November 16, 2009, 08:23:46 PM
fuck, if it was that i would be almost tempted to pickup another piston/rod and slap the fucker in there......
I would think if it was a wrist pin issue the noise would have changed when you were pulling plugs $:-\$

yes it usally does, thats why I wanted him to do that.

That is usually a rod bearing diag trick. Wrist pins do not have the luxury of oil pressure to dampen the noise.

BangBusMaster · « **Reply #31 on:** November 18, 2009, 12:49:43 AM »

Dustin, if you have cam gears; the bolts/cap screws can poke through the back and rub the plastic cover. I've worked on 2 cars that did this, and the noise was very noticeable at idle like yours is.

turbohf · « **Reply #32 on:** November 18, 2009, 01:15:44 AM »

Quote from: BangBusMaster on November 18, 2009, 12:49:43 AM

Dustin, if you have cam gears; the bolts/cap screws can poke through the back and rub the plastic cover. I've worked on 2 cars that did this, and the noise was very noticeable at idle like yours is.

stock gears, made the same noise with cover cut for gears (completely open) and with no valvecover on at all...

HiProfile · « **Reply #33 on:** November 18, 2009, 02:06:07 AM »

Could it be possible the wrist pin is just slightly bent? I know some old articles I've read about OEM's switching to press-in pins list noise reduction as one reason. So even a slight change would create at least some noise. And since it's a cyclical noise, it more than likely is being caused at a certain point in rotation (one cylinder).

turbohf · « **Reply #34 on:** November 18, 2009, 02:34:30 AM »

Quote from: HiProfile on November 18, 2009, 02:06:07 AM

Could it be possible the wrist pin is just slightly bent? I know some old articles I've read about OEM's switching to press-in pins list noise reduction as one reason. So even a slight change would create at least some noise. And since it's a cyclical noise, it more than likely is being caused at a certain point in rotation (one cylinder).

yeah i guess its possible, and really my thought at this point that the piston pin is bent or the piston slightly deformed binding on the pin?
but this piston/pin is OEM, and pressed already?

BangBusMaster · « **Reply #35 on:** November 18, 2009, 02:49:06 AM »

Its the plastic cover behind the gears that make contact. Stock gears huh $:-\$

turbohf · « **Reply #36 on:** November 18, 2009, 10:17:58 AM »

Quote from: BangBusMaster on November 18, 2009, 02:49:06 AM

Its the plastic cover behind the gears that make contact. Stock gears huh $:-\$

nope, see no contact..

HiProfile · « **Reply #37 on:** November 19, 2009, 01:01:31 AM »

I just recalled someone saying their forged piston bent the wrist pin somethin fierce, and also cracked the piston - made a terrible racket but ran fine. I also recall a wiseco crack between the skirt and wrist pin hole after 50k boosted miles, making some clatter.

I'm just curious if it could be the clutch springs. Mine didn't sound exactly like that, but still a cyclical sound.

turbohf · « **Reply #38 on:** November 19, 2009, 01:15:15 AM »

makes no diff if the clutch is pushed in or not. its a LSD 6puck sprung disc with maybe 10k miles on it, and looked fine before putting in.

---

also. today it was a little dry, and i had some road in front of me, so i laid into 3rd gear till probably 7500+rpms (on a shitty basemap). made it the rest of the way to work and back (another 60+miles) with no change in noise or anything else noticeable...

---

im trying to track down another piston/rod, i might swap it out this weekend. pretty good chance i pull the pan/rod caps off again for giggles, along with pulling the crankpulley off to look at that.

---

tech at work listened to it. (and has been hearing me talk about it) didnt have much to say, just looked like he was thinking, then made a comment about a waterpump, but still didnt even sound convinced himself?

DmC · « **Reply #39 on:** November 19, 2009, 04:15:14 AM »

Did you try using a long screwdriver to listen to everything. move the tip around the engine and up your ear up to the handle and see where it gets loudest. Long shot and it sounds to loud to be it but, Maybe try taking the ditributor cao off ans seeing if the set screw came off the rotor button.

Or try putting the screwdrive against the pivot arm for the clutch and listening I had a sprung six puck with a few spit out springs making a noise somewhat like that.

JACER63 · « **Reply #40 on:** November 26, 2009, 01:01:19 AM »

thing sounds like a diesel vw. deff a piston slap/rod issue

turbohf · « **Reply #41 on:** December 10, 2009, 11:50:41 PM »

UPDATED first post....

still makes noise... makes lots of power...

pulled out all the pistons, 3 looked used, one looked slightly abused...so i put in another used one lol... threw it back together... reused all parts... think thats #5 for the headbolts and #2 for the headgasket... and like 5+ times for the rod bolts...

pretty sure at this point that the cylinders are just out of round and it needs overboard... by someone else, im just gonna buy another fuckin motor sometime next spring/summer and make even more power...

Tom@OCZCTuning · « **Reply #42 on:** December 11, 2009, 12:31:10 AM »

whats the full setup dustin?

turbohf · « **Reply #43 on:** December 11, 2009, 02:00:46 AM »

PTE 50trim .63 exhaust... cast log... 2.5 down/3exhaust, 2.0 hot/2.5 cold chargepipe, small cdm cooler, stock B18C1... PBTuning intake/tb... 10psi... LEED Tuned (CROME)... thats all thats relevant... i may make a post... probably not.

Foowee · « **Reply #44 on:** December 12, 2009, 11:01:24 AM »

Long shot, but have you removed the cam gears from the cams?

I've had loose cam gears/sloppy keyways before that rattle at low rpm but tighten up when you put some load on them...

Or has anyone seen a slopped out rocker before?

I'm just throwing around ideas... It's probably a wrist pin/egg bore deal though... run it till it fails...

turbohf · « **Reply #45 on:** December 12, 2009, 10:29:35 PM »

Quote from: Foowee on December 12, 2009, 11:01:24 AM

Long shot, but have you removed the cam gears from the cams?

I've had loose cam gears/sloppy keyways before that rattle at low rpm but tighten up when you put some load on them...

Or has anyone seen a slopped out rocker before?

I'm just throwing around ideas... It's probably a wrist pin/egg bore deal though... run it till it fails...

i have removed the cams, and crank pulley. all had solid keyways. at least when it was apart last time...

this whore makes it to spring, its getting some E85... like lets max out some 1000s/Walbro status

a B18C block isnt that hard to comeby. like my buddy just picked one up that puts my jewishness to shame, and it even has a VIN tag. but it also has a spun bearing and now he doesnt wanna run stock bore/hone after my motor LOL

98vtec · « **Reply #46 on:** December 14, 2009, 12:44:58 AM »

sounds like a ford/GM tensioner that is running out of adjustment lol

Joseph Davis · « **Reply #47 on:** December 21, 2009, 02:48:15 AM »

Slight rattle at high idle and at different RPMS, more pronounced on decel? Check to make sure a cam key isn't being hammered flat, test with a known good VTEC solenoid. Probably the VTEC solenoid.

turbohf · « **Reply #48 on:** December 21, 2009, 06:24:40 AM »

Quote from: Joseph Davis on December 21, 2009, 02:48:15 AM

Slight rattle at high idle and at different RPMS, more pronounced on decel? Check to make sure a cam key isn't being hammered flat, test with a known good VTEC solenoid. Probably the VTEC solenoid.

swapped VTEC solenoid. VTEC works, noise still there.

less pronounced on decel.

turbohf · « **Reply #49 on:** December 21, 2009, 06:26:42 AM »

oh and i had the cam gears off when the head was off earlier. forgot the fuckin back cover before puttin the cams in.

keyways and keys where legit.

Joseph Davis · « **Reply #50 on:** December 21, 2009, 01:34:10 PM »

Uh, sir? No offense, and I hope you find the solution to this problem - or find out a long time from now it was a cosmetic noise of no consequence - but I am glad it's your car and not mine.

turbohf · « **Reply #51 on:** December 21, 2009, 03:46:07 PM »

honestly i have given up. with the swap of the VTEC solenoid it runs fine. so i will drive it till it blows up then part the motor out completely. in the spring i will be trying to pickup a built shortblock.

PhilStubbs · « **Reply #52 on:** December 21, 2009, 08:38:06 PM »

*cough*wrist pin*cough*

edited cause the iphone has no idea what word i was really trying to type

snm95ls · « **Reply #53 on:** December 21, 2009, 09:34:11 PM »

Quote from: SecksyPeePee on December 21, 2009, 08:38:06 PM

*cough*wring pin*cough*

Joseph Davis · « **Reply #54 on:** December 22, 2009, 12:19:30 AM »

Quote from: snm95ls on December 21, 2009, 09:34:11 PM

Quote from: SecksyPeePee on December 21, 2009, 08:38:06 PM
*cough*wring pin*cough*

PhilStubbs · « **Reply #55 on:** December 22, 2009, 08:04:19 AM »

Wrist pin. i was posting from my phone

Joseph Davis · « **Reply #56 on:** December 22, 2009, 11:44:27 AM »

Quote from: SecksyPeePee on December 22, 2009, 08:04:19 AM

Wrist pin. i was posting from my phone

News:

Author Topic: whats that noise?.... (video) *update* (Read 16456 times)

Author Topic: whats that noise?.... (video) update (Read 16456 times)