Jump to content
SAU Community

New Engine Installed - Whats This New Noise ?

Guilt-Toy

By Guilt-Toy,
in Engines & Forced Induction

 Share

Recommended Posts

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

I just got my new fully forged bottom end running yesterday and the car sounds like it has a supercharger on it and you can hear this really high pitched whine comming from the engine.

The engine runs fine appart from running around 10 - 15deg higher then normal.

Anyone got anyideas why it would make the sound and why would it run hotter? the gauge in the dash reads normal readings its just the PFC that is saying it sitting on 101deg/c

gtst4d Community Regular

gtst4d

Posted
Posted

If you have done a new timming belt it could be that, mine did the same and it turns out it was to tight and we just backed it of a little and the noise went away, and some belts are noiser than others.

Beer Baron Grand Master

Beer Baron

Posted
Posted
Yep. Gates NEO

I haven't personally used a gates belt, but they have a bit of a rep for being quite noisy. I have heard a few cars with them, and yes they were noisy. It's quite possible though that it is just not being tensioned properly. were the tensioner and idler bearings replaced or checked?

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

get a long screw driver and carefully put it on the water pump housing, or the alternator or the powersteer pump, with your ear on the other end, if they all sound normal then your belt or tensioners may be noisy

cheers

Jeremy

dangerman4 Mentor

dangerman4

Posted
Posted

gates timing belts are crap. Do not use them...

I installed one with the new idler/tensioner bearing's.

after about a week i had this really weird noise at idle coming from the front end.

after 6 months it was getting really annoying so i

did the screw driver trick, and the most noise was coming from the cas.

chucked a spare cas on and no change, so i removed the timing cover and instead of the blue gates belt i found a black gates belt. i was puzzled by this so i stripped the balancer, lower cover, etc off and found all the blue crap from the belt was now coating my new idler and tensioner pulley.

the coating that they put on the outside of there belts is useless.

removed both pulleys and hit them with the wire wheel on the cordless, and came up good as new.

replaced with a genuine nissan belt and havent heard a single noise since.

So the moral of the story is,

stick with genuine.

Cheers

dead32 Mentor

dead32

Posted
Posted

i use a gates belt on my car, never once has been noisey. prob overtensioned as the others have said. p.s the blue does flake off my i doubt that was the noice, id say you overtensioned your belt also causing the belt to overstretch and strip the blue *gates* off.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      R34 gtt rb25det neo timing belt kit

      By GTSBoy · Posted

      Just don't use ChatGPT or any other artificial stupidity for the equivalent of googling. Their demonstrated inability to discriminate reality from hallucination should be enough to make them totally untrusted. LLMs don't know anything and cannot think to even the smallest extent. They are just predictors of the next word, and that should never be confused with capability.
    • GTSBoy
      Another little story of weird shit happening

      By GTSBoy · Posted

      I think, given the usage model described in the OP, I'd never ever experience the wonders of the 400kW upgrade. What I really need is boost from 2000rpm and probably no more than 260-270rwkW. But I suspect that the highflow is not actually the turbo for that purpose, so I may in fact need to get a G25 or 30 or something right sized and very spooly. We shall see after it is tuned. I've had to back the boost and boost ramp off to stop the thing from pinging since the highflow went on, so I've been almost living the NA life for 9 months now! Injectors are recently in hand. AFM is in hand. Dyno is fixed. Just need to clear a queue of f**king Supras out of the way (and probably fit my new gearbox). So....some time this year? Lol.
    • GTSBoy
      braided lines for the turbos

      By GTSBoy · Posted

      For what I gather is a Sunday/summer car....braided is fine. You're not going to be left without a vehicle and you have plenty of time for inspection/maintenance. Oof. I wouldn't use them that way. They can probably handle the temperature** but the internal corrugations means that their flow characteristics are a bit shit. Lots of extra friction and pressure loss. Makes them flow like the next pipe size down. ** They are stainless, and the stainless can usually be at least something like 304L, which is pretty good at higher temperatures (unlike 316L, which I would use for a wrt/corrosive environment, but not a particularly hot environment). But the welding needs to be top notch. And even then, because you usually need at least one cone-seat end on them (because you can twist the hose and do up both ends at the same time unless one of them is a union) they can be prone to coming loose with heat cycles.
    • sunsetR33
      braided lines for the turbos

      By sunsetR33 · Posted

      I don't have the OEM oil feed lines though and the turbo-wraparound line is torn, only has water. My plan is to get replacements for these and just connect a braided line to there. And make sure it's leak free. Hoses like these are also sometimes used to connect external wastegates, so for an EGR I think you're good using them.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Alright I understand. The most likely case is probably gonna be that I just keep the OEM unit in the car as long as it works.
×
×
  • Create New...