Jump to content
SAU Community

Neo Noisy Cams

Huzqld

By Huzqld,
in Engines & Forced Induction

 Share

Recommended Posts

  • 9 years later...
  • Replies 41
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

methz
methz

Mine? yes the intake cam was drilled with oil gallery if thats what ur asking. it was like a week after cam install the vct rattled and made noises. was still fine to drive/power on. just shit house n

Simon-S14
Simon-S14

why would you not use the VCT?

Toff
Toff

Hi Bud, Yeah that's the next step, going to get these checked. they were set "bang on" when it was built and its always been present. They may well be wrong though!

Posted Images

Toff Contributor

Toff

Posted
Posted

Thread revival, apologies!

I have a similar issue, strange noise that appears shortly after starting the car, fluctuates a bit with RPM... If you bring the revs up the noise sort of follows / trails behind and then settles if that makes sense?

Engine was built years ago with CAMTECH 268 Cams (9mm lift i believe) and the rest of the upgrade kit with the springs and retainers.

Can you upgrade the pulley itself, if the spring is too weak (same as on the VG30 Lumps) or is it pointing towards another issue?

 

Cheers!

  • 3 weeks later...
Toff Contributor

Toff

Posted
Posted

Got them measured (better late than never) 

They seem to be the "wrong way around" IE Tighter on inlet and slacker on exhaust which I believe is actually the opposite to the norm on an RB? They're not perfect but am I right in saying they're not horrendous? I can't find the specs to suit the exact camtech cams anymore so using OEM and Other aftermarket specs they don't seem bad?

Put a video on to show. Using a stethoscope the noise doesn't seem to be focused around one area.

 

Worth noting the car has probably done 6000miles like this and it's never ever changed nor struggled to make power etc.

I'm a bit stumped!

 

IMG20241025195733.jpg

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Those numbers aren't terrible.

Another question, do you have an aluminium plenum? You could just be hearing the solid head a bit more because of that.

I know when I went from the stock intake manifold to an aftermarket intake manifold/plenum, everything became louder.

Injectors, lifters, became more audible.

Toff Contributor

Toff

Posted
Posted
11 hours ago, GTSBoy said:

Doesn't seem like it should cause them to be too noisy. Circa 0.4 is on the wider end of the range though. You can probably target more like 0.3 on the inlets.

Yeah that's exactly my thoughts but I'm far from an expert. Video didn't upload so will get it on YouTube and share the link. Thanks mate.

10 hours ago, Dose Pipe Sutututu said:

Those numbers aren't terrible.

Another question, do you have an aluminium plenum? You could just be hearing the solid head a bit more because of that.

I know when I went from the stock intake manifold to an aftermarket intake manifold/plenum, everything became louder.

Injectors, lifters, became more audible.

Yeah as above really they're not horrible numbers are they! 

And it's on a greddy inlet. Has ID1050x that are quite noisy but tbh it did this on the older injectors. Lots of noise comes from the injector rail too.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
56 minutes ago, Toff said:

https://youtu.be/CCHaKUhZi34?si=PNdluupk9TWFtvws

Thanks for that, it actually sounds fine to me.

What oil weight are you running and what kind of oil pressure do you see around idle RPM and a bit over it?

GTSBoy Grand Master

GTSBoy

Posted
Posted

I'm going to vote for considering going to the effort to close the lash down to the minimum. My bro-in-law got around to checking the clearances on the 3SGE in his Caldina. Was a bit fat all over. New shims at lowest allowable lash, and the car is remarkably better to drive. It appears that the increase in both total lift and duration that you get from doing this is worth a lot more than you might expect.

I have been having evil (and expensive and time consuming) thoughts about doing it to mine, and I don't even think I have a problem. Not that I'd know, though.

Toff Contributor

Toff

Posted
Posted
On 10/26/2024 at 1:01 PM, Dose Pipe Sutututu said:

Thanks for that, it actually sounds fine to me.

What oil weight are you running and what kind of oil pressure do you see around idle RPM and a bit over it?

Yeah most people that have heard it said it was fine but it's always had me slightly worried.

Oil pressure I can't remember off the top of my head but it has plenty, I run 10w60

On 10/26/2024 at 1:04 PM, GTSBoy said:

I'm going to vote for considering going to the effort to close the lash down to the minimum. My bro-in-law got around to checking the clearances on the 3SGE in his Caldina. Was a bit fat all over. New shims at lowest allowable lash, and the car is remarkably better to drive. It appears that the increase in both total lift and duration that you get from doing this is worth a lot more than you might expect.

I have been having evil (and expensive and time consuming) thoughts about doing it to mine, and I don't even think I have a problem. Not that I'd know, though.

You're probably right mate, best get ordering some shims!

Guessing Nissan is the best place for them?

GTSBoy Grand Master

GTSBoy

Posted
Posted
7 hours ago, Toff said:

Guessing Nissan is the best place for them?

I dunno. Maybe. There's a crowd here in Oz called Precision Shims that I'd probably look to first. Although NIssan might be surprisingly cheap enough.

Trouble with the process is you have to take all the existing shims out to measure them to know what you need to order.

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

    • Kinkstaah
      WTB R34 GTR Guard Liners

      By Kinkstaah · Posted

      Ah! I actually managed to snag a lightly used set.... that aren't so suitable for me right now. They don't work on a GTT without some cutting or creative heat moulding. I thought about reselling them myself cause I didn't want to murder them, but it looks like I'm probably going to attempt to murder them/melt them because I may as well. @GTSBoy @PranK can somebody close this thread?
    • itsmeyo
      WTB R34 GTR Guard Liners

      By itsmeyo · Posted

      Hey mate,  I have a set, one is slightly damaged but wont be noticable once installed.  Shoot me a message if your still after them 
    • The Bogan
      NC MX5

      By The Bogan · Posted

      I couldn't wait But, the black constant tension hose clamps were too thick and there wasn't enough clearance at the T/B and I couldn't get it to seat properly, so I had use a silver one there I also added some 3" silicone over the alloy bit that goes through to hole on the radiator support as it looked like it was sitting on the edge of the hole in the radiator support, I never noticed a rattle or anything, but there was a witness mark It is basicly done, and I can live with the silver hose clamp at the T/B, I will get a black clamp for the head vent though where it is attached to the bulkhead fitting  It never stops...LOL, only issue now with the shock tower brace is it slightly touches the under bonnet liner now, if I leave it it will either wear some paint off the brace where it touches, or damage the liner, so I removed the liner to see what I have to work with, with the liner removed I have about 20mm of clearance, but sadly the middle part of the underside of the bonnet is only dusted with paint and looks crap, so I cannot have that, but.... as I have a roll of Carbuilders premium under bonnet insulation in the garage laying around that is only 5.5mm thick (we were going to use it on the boys Patrol, but he crashed the front of it a few months and it was written off, hence why he now drives my old Honda Accord Euro), I'll use the OEM liner as a template and get the Carbuilders stuff fitted up to cover that dusted paint up
    • Kinkstaah
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Kinkstaah · Posted

      You have a knack for photography my friend. It makes the 86 look like a complete bucket. The 34 went with you to Europe and back. It's special. (we all feel the same about our 'shitboxes' that every bystander seems to absolutely love)
    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      LOL.... you are correct there.
×
×
  • Create New...