Jump to content
SAU Community

Engine Developed A Weird Knocking

govich

By govich,
in Engines & Forced Induction

 Share

Recommended Posts

13thracer Rising Star

13thracer

Posted
Posted

sound is very much like lifters especially if its gone now it would point to lifters, would of most likely been a lifter that had not pump uped properly change your oil and filter and check the oil that comes out for any sludge or chuncky bits which may be getting caught in your lifters.

little tip get your oil nice and warm before you drop it dont bother doing it cold, take your car for a good drive first.

  • 2 weeks later...
GunMetalR33 Mentor

GunMetalR33

Posted
Posted (edited)

Sorry to bring back a dead thread, but I have this problem and everyone seems to think its lifters.

What does everyone mean by pumping up the lifters? I know they are hydrolic but I dont know there relationship with the values and cams???

I have changed my oil and filter twise in the last month but the sound is still there when the engine is cold then disapears when it heats up?

Edited by GunMetalR33
shanef Grand Master

shanef

Posted
Posted

Pumping them up refers to pumping them full of oil. What i did was took the lifters out (one side at a time) and soaked them in a bucket of new clean oil. Then replace those and see if the sound has gone away, if it hasnt do the other side.

GunMetalR33 Mentor

GunMetalR33

Posted
Posted

OK thanks mate,

I have never taken the rocker covers of the rb25 before so dont really know what to expect.

So does the cam run the lifters which open the valves? How does the system come together???

Pumping them up refers to pumping them full of oil. What i did was took the lifters out (one side at a time) and soaked them in a bucket of new clean oil. Then replace those and see if the sound has gone away, if it hasnt do the other side.
cameron Mentor

cameron

Posted
Posted

Best to take it to a mechanic if your not sure.

To get the cams out, means removing the rad, harmonic balancer, timing belt etc...

I problery wouldnt worrie about it inless you start getting symptoms of the engine running like crap - shouldnt happen tho.

Even some times pumping up the lifters like shanef explained doesnt always work so the best option would be to get new ones if your that concerned:o

  • 2 weeks later...
GunMetalR33 Mentor

GunMetalR33

Posted
Posted

Sorry again for the dead thread thing but,

Do you have to take the cams out to remove the lifters? And how much does a new set of hydrolic lifters set you back?

I was thinking about getting some tomie cams and if you need to take the cams out to change the lifters then it might be a good excuse for the new cams :)

shanef Grand Master

shanef

Posted
Posted

u certainly do need to remove the cams to get the lifters out.

so basically you remove the cams, grab a magnet and then using the magnet the lifters will just slide on out

another suggestion. have you done ur timing belt yet? caus this would be an excellent time to change it!

GunMetalR33 Mentor

GunMetalR33

Posted
Posted

thanks mate,

Are you talking hydrolic lifters?

Well I guess I will leave the lifters as is, by the sounds of it its only one of the front ones doing it and it goes away when the engine heats up.

If it starts to hang around even when the engine is cold then I will looking into getting cams and new lifters then.

How much are new lifters?

shanef Grand Master

shanef

Posted
Posted

yeh i was talking about hydraulic lifters.

not sure how much new lifters are, give ur local nissan a ring they'll be able to tell you.

oh and one last thing. with that lifter noise, is it coming from one side? or both sides? or does it change from side to side?

GunMetalR33 Mentor

GunMetalR33

Posted
Posted

its the right hand side if you looking into the engine bay from the front of the car, so I guess the exhaust side. I dont think it changes from side to side... Why do you ask?

I am a little woried about the Zaust value getting stuck closed even when cold as I am getting fuel in my oil atm which is probably due to the excesive missing that I am getting (tune issue) but a lock value could be the cause???

Why did nissan use Hydrolic lifters on an over head cam engine, the rb26's have solid ones right?

shanef Grand Master

shanef

Posted
Posted
1) its the right hand side if you looking into the engine bay from the front of the car, so I guess the exhaust side. I dont think it changes from side to side... Why do you ask?

2) I am a little woried about the Zaust value getting stuck closed even when cold as I am getting fuel in my oil atm which is probably due to the excesive missing that I am getting (tune issue) but a lock value could be the cause???

3) Why did nissan use Hydrolic lifters on an over head cam engine, the rb26's have solid ones right?

1) I asked because i had the exact same noise from my RB25, but the noise ended up changing sides constantly, and then when i pulled it apart, it turns out it had bent a rod :)

2) I'm not a mechanic so i don't quite know the answer to that one

3) Again i'm not really sure because i'm not a mechanic

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

    • Hexi
      Dumb rich kid tries modding for the first time

      By Hexi · Posted

      Haha thanks everyone, I'll take everyone's suggestions into consideration. If I do eventually choose a car ill post it here update on the mods I do.
    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      I found the ingredients at larger amounts from a Coffee Shop. 1kg Citric Acid for €8.50 500g Baking Soda for €2.50 I tried it out tonight distilled water (I got from my ACs) and dish soap. It does get bubbly with dish soap. In just two hours the hanger has improved significantly and rubbing against any remaining rust seems to flake it off. I'm going to leave it a little bit longer and see how it goes. I have read that someone even used this solution in an ultrasonic cleaner to clean a seized water pump which brought it back to life.
    • Duncan
      Dumb rich kid tries modding for the first time

      By Duncan · Posted

      If you like more modern stuff than the R series, you should check out a V37 400R, they are pretty mod friendly
    • TurboTapin
      R32 GTST - 600KW+ RB28/CD009 Build

      By TurboTapin · Posted

      Haha luckily we don't have emissions, inspections, or any laws against power adders here. They only thing they somewhat keep an eye out for are ridiculously loud exhausts. 
    • tidi0x
      CD009 RB Conversion

      By tidi0x · Posted

      Just wanted to pop in an update on my setup. The CD swap has been great, I love the mazworks housing for the overall simplicity. I ended up sealing my trans tunnel with a thin sheet of aluminum reused some of the holes on the trans tunnel, and laid some window sealing EPS foam around the edges. Works great, really quieted things down and sealed up the car.  As for the power comment. Right now I am also running about 650whp. with the way the bell housing is attached to the face of the transmission I have zero doubts it would be fine, mainly because the input shaft and main shaft bearings are seated into the bell housing adapter. This means the load is NOT on the bolts to maintain the power, rather into he casing of the bell housing; Yes the bolts are doing some work there, but with both shafts locked in zero worries.  End of the day, the Mazworks solution is the easiest and safest. no need to take your trans to a shop to get milled perfectly, it fits with minimal clearancing, and you can use all your existing clutch and flywheel.  Driving wise the CD has been great compared to the big box, I'll probably swap my final drive at some point. The serial 9 shifter is gooooood, my only qualm is how tight it is, it takes a fair bit to get use to, 5th and 6th are a bit eh/hard to find at times, but maybe I need re-adjusting, and I think my clutch master is very tired and needs a rebuild. 
×
×
  • Create New...