oil filter

[PDoyle]

Last couple weeks there has been posts discussing the long and short oil filters
and how the shorter one will stop or slow the start up knock (chatter) sound.

I run the longer filter. Does the short filter stop the chatter?

Danka shane! Gracias.....

 

[Eduardo96FZJ80]

I have the...

start up rattle with both types of filter, but it is less with the small filter

 

[94landcruiser]

I just changed from short to long and had the rattle before/don't know yet if I still have it/if it has increased/decreased. What is the cause of the noise? On mine it only happened the first start of the day/when the engine is cold.

Gracias.

 

[RavenTai]

There are many threads on this. A search will bring details

What is the cause of the noise?

The source of the noise is lack of oil pressure to the timing chain tensioner, without proper tension the chain slaps around, the higher the startup RPM and the longer it takes to get oil pressure the more likely you are to get start up rattle,

The oil filter drains overnight and is partially empty in the morning (this is also, per the owner manual, why you check the oil right after shutdown) until the pump purges the filter and all of the oil holes of air there is no oil pressure, the larger the filter the longer it takes to fill and the longer the lack of oil pressure and the longer/more severe the start up rattle.

Many including my self have reduced start up RPM therefore getting rid of the start up rattle by removing the TB and cleaning it, the idle air control valve & pocket, and adjusting the TPS, you can also do the IAC o-ring trick wile you are in there to garontee a start up RPM reduction, I did not do the O-ring trick and still came out OK.

Robbie has documented drilling an oil passage in the tensioner to help it get pressure sooner.

One member has tried a 90 degree oil filter adapter, this should help with the rattle also but I have not heard weather it actually does or not. Were it not for the sideways mounting of the oil filter a larger filter would be desirable.

So far there have not been any engine damaged directly tied to the start up rattle, trucks have been known to do it for many years to no ill effect, but somewhere in the middle of 1FZ production the chain slipper was beefed up because the earlier ones were occasionally breaking, I do not know if the original slipper was just plain to weak for the task Or were the slipper not being beaten by the chain on start if this breakage would still occur? I do not have any solid info either way just a hunch that start up rattle and broken chain slippers are related.

so if you want to get rid of your start up rattle go to the smaller filters and clean your TB and possibly try heavier oil if your climate allows, if that does not eleminate the rattle and your start up RPM is still high then try the o-ring trick, if still present look into more invasive procedures like drilling your tensioner.

 

[topend yobbo]

I dont think the oil does drain back out of the filter because it will have an anti drain back valve to prevent this.Good quality ones will I know that much.
Why do you think when you remove the filter at oil change time oil pours out, if it had drained back into the block it would be empty.
I think the rattle is something you will never fully eliminate.
Unless of course you drive a 1HZ diesel.

 

[landtank]

Well, I've posted this before but I don't think anyone gives it any creedance, but I'll post it again. I had the startup rattle like everone one else right up to the time I reshimmed the valves. I think it's loose just a slightly loose bucket and once the oil is pumped up into the head they quiet down.

 

[RavenTai]

I dont think the oil does drain back out of the filter because it will have an anti drain back valve to prevent this.Good quality ones will I know that much.
Why do you think when you remove the filter at oil change time oil pours out, if it had drained back into the block it would be empty.
I think the rattle is something you will never fully eliminate.
Unless of course you drive a 1HZ diesel.

It is possible to eleminate start up rattle, mine does not have it,

even if the ADBV works (some do not) the drain back valve does nothing to keep oil from flowing out the outlet and then out the chain lube nozzle bearings and other lower end openings.

with a working ADBV the filter can drain out the outlet to less than half full,
with a leaking ADBV it can drain to about 1/4 full,

you have not noticed a diffrence on the stick and in the ammount that coems out the filter? I have.

Rick did you happen to clean the TB wile you had it off the shim the valves?

 

[drsales]

I swear most of mine has been reduced by going to a synthetic oil.

 

[Brian Macgyver]

We have been thru this how many times? Toyo uses the small filter can because they can put almost the same filter material in the small can as in the big one. But the small can takes 1/3 as long to build pressure, so the start-up rattle is minimized. Let's explain it again....
No, we won't!

 

[94landcruiser]

I got to this thread by searching. In it I found the rattle being discussed. I fail to see why on every forum be it about cars, stereos, llamas whatever the issues that are known (by some) when asked by thoes unaware always get replies like SEARCH. If it bothers you why not just ignore the question?

Thanks to those that answered productively. I still have the rattle, but seems for less time and now I know not to worry about it.

Thanks