SLiDe_WaYz

Few details before the vid is shown. I've serious tried everything I could think of the engine ran PERFECT and idled smooth at 1K before hand. I had to pull the engine in order to put in the new clutch, tob, pilot bearing, ext. Basically a entire clutch job since the pilot bearing was a automatic and my input shaft just rattled around before hand. Well anyways I thought it may have been the alternator pulley, so i took the water pump,crank, alternator belt off. SAME NOISE. So I tried power steering, same noise. The turbo is a rebuilt T25, I have no mods really at all. FMIC, GReddy Intake manifold, HKS intake, GReddy catch can, and thats about it, stock everything else besides the clutch, I deleted the dampener with the Nismo Slave and SS line. I dont think that would cause this noise. The engine really ran and idled perfect before hand. I know a vacuum leak couldnt cause this loud and obnoxious noise. So im posting here for help and brainstorming ideas to figure out wth the noise is I cant pin point where its coming from, again I've removed all belts and started it up and the same noise occurred so it isnt any of the main pulleys up front. Maybe the clutch is torqued down to much or something ? Idk please and i mean PLEASE someone on this awesome forum help me out !


YouTube - Name that Noise!!

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Memberofthe600hpkaclub

Srt4S make the same noise when the intake gasket is leaking, you could try that

SLiDe_WaYz

intake manifold gasket ? havent checked there it sounds as if something is rotating though. Like a bad bearing inside of something. Ill check the intake manifold tmo. Im want to put my stock intake manifold back on anyways.

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Pro ViZIon

Im not sure if i overlooked it but what exactly does this noise sound like?

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1990 Nissan 240SX w/KA24DE - New project
1984 Mazda RX-7 GSL-SE 13B

JDM king240

sounds like bad pullies or bearing

krps13_180sx

how was the oil pressure like when it was on? probably something worn in either the front or rear main... i know that any dents on the sr oil pan can trick out the oil pump from working properly..

SLiDe_WaYz

Oil pan is brand new, oil pick up is brand new. Oil pressure when started was at like 95? Which I know is high.

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SLiDe_WaYz

It's a high pitched squeal, majorly high pitched. It hurts your ears something serious. I can't exactly pin point where the noise if coming from it somewhat sounds like the intake mani side, but I really can't tell. My idle is at about 1700, which makes me think I have a vacuum leak somewhere. No dents in the oil pan, I had to jack up with a wooden block from the oil pan to tilt the engine backwards into the firewall to try and stab the trans from the bottom. But it didn't put any indents or anything in the oil pan. I'll take a pic and post it up of the oil pan.

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SLiDe_WaYz

Also when I first got everything back in the car and I first started it it didn't so this, if has a REALLY weak start for some reason as well. When I first started it it did this for about 30 seconds ad stopped I drove around te block pulled back into the drive way and killed it. Waited 10min and started it up and it did it again and it didn't stop so since then I haven't driven or anything just left it in the garage. I'm at a total loss I'm seriously stumped.

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hessianben

rule out pulley bearings before you tear anything else apart.

SLiDe_WaYz

It can't be the pulley bearings I took off all the belts and started it and it still makes the noise. I just put the belt back on and it got SUPER hot for some reason.

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hessianben

i'm assuming that included your water pump pulley? so you can rule out a bad water pump bearing....?

can you crank it by hand? if it is too hard to crank by hand, don't run it if you don't have to... chances are more damage is being caused if so...

jesse_s13

i was gonna say the wp. shit sounds bad=/

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SLiDe_WaYz

Nooooo it's parked in te garage, I noticed my vacuum is now at a 15 and not the usual 20, then I noticed the intake manifold has no gasket! So that could be the vacuum leak! And the water pump is brand new with 10 miles on it. Alternator pulley turns by hand some what easy. Then belt gets really hot for some reason. I'm seriously stumped at what this cause is. I'm going TI take the manifold off later and see if that's what's wrong. I know the engine itself is fine. No leaks or anything all the seals are brand new as well.

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krps13_180sx

Definitely work on that intake manifold.. 15 and 20hg of vacuum is normal depending on the temp of the motor. but also consider what hessianben said..try to turn the crank hope that theres no restriction or anything.

SLiDe_WaYz

So turn the crank with a 27MM, and see if it sounds freely correct? Or turnthe alt pulley or water?

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krps13_180sx

turn the crank, if you think the accessory pulleys and bearings are fine you can take the belts off, just turn the crank to feel any restrictions on the internals

SLiDe_WaYz

I said above I took all the belts off and started it and the something happened. I already turned the crank by hand and it's fine until it builds te normal compression.

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krps13_180sx

you really got me stumped on this dealio lol.. you also said that the motor ran fine before the clutch install. how was bolting the transmission up? did you have to fight it in? possibly a faulty pilot bearing/release bearing that came with the clutch kit? :s

SLiDe_WaYz

Nah man, I had to pull the trans in order to install a pilot bearing since the one that came in the engine was a auto, I didn't change it before hand and it made a god awful rattle. So I pulled it, ordered a pilot bearing and a tob from enjuku. Installed it and it fixed the hellacious grind sound but now this problem sources. I wouldn't think the intake manifold not having a gasket would be the issue. But I figure I'll try it tmo and see. My vacuum read at 20 before hand
Now it's a 16ish.

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krps13_180sx

ya def do the intake mani but for the pilot bearing, it does sit in the middle of the flywheel and turns at the engines rpm..other than that im stumped..

SLiDe_WaYz

Idk man I don't see it being the pilot bearing? I check the turbo as well no axial or shaft play

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jr_ss

Lets start from the beginning. Everything was fine before you did the clutch items correct? If you didn't touch the motor, then your problem lies with what you did touch. I'd pull the trans and look at the TOB and the pilot bushing. Did you grease the bushing? Perhaps you recieved a faulty TOB from the factory, rare but not unheard of. Start with the things you changed before you begin to think it's something engine related.

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My SR20VET

SLiDe_WaYz

That's good logic, yes I greased the pilot bushing before hand, the tob is a Koyo from frsport, I went ahead and replaced it even though the old one had 10 miles on it total. I had to pull the trans in order to replace the pilot bearing. So basically the only thing I touched was the pilot bearing, tob, and replaced te slave with a nismo slave and SS line.

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McSlides

Could be you got a shitty TOB. Im not trying to shop bash by any means cause i get alot of good parts from Enjuku. But i had a bad TOB on my SR, ordered a "new" one from Enjuku and it still whines like it's bad.

SLiDe_WaYz

Whines like the video posted? I really can't find ANYTHING wrong pulleys are good, water pump good, only thing I found was the intake manifold not having a gasket which I ordered one last night. I guess I'm going to have to pull it all out again! And replace the tob with the old new one that was in there. Luckily I kept it.

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McSlides

This one, no. One i had in my KA, yes lol. My buddy installed a ACT tob when he did his clutch and it whined pretty bad, put an oem one in and it was fine. I would't fiddle with anything that wasn't busted previously. It could also be a really bad vacuum leak somewhere to. Maybe cracked a line when you were pulling th motor.

hessianben

question:

just for the sake of ruling things out...

does the sound change when you engage or disengage clutch pedal?
does the sound change when you press clutch and select a gear?

also, did you use the standard brass pilot bush or a 'needle bearing' style replacement?

I pulled my trans twice in 6 months because i was eating pilot bushings until i switched to the bearing style. although my whine only happened when the clutch was depressed.

McSlides

Good call.

SLiDe_WaYz

Well I've never presses in the clutch pedal while it was running. I bought the brass bearing from frsport for 20 bucks shipped. I'll try that now I'll go start it and press in the clutch and see what happens. I havnt driven it at all with the noise So im not sure what happens when i shift gears. I'm just really confused on what the problem is. I am yet to get to drive my car with the SR in there. It's depressing. I'm almost to the point of selling and getting a bike.

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