So I have sen lots of posts on BEB replacement but none on the indications that they are bad.I have a 1hd-t with 218,000 kms and I doubt that they have been replaced. How does a feller know if they are bad? Thanks and merry xmas to all
BEB paranoia...
- Thread starter ticoman
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Change them.
FJRanger
SILVER Star
X2, if they go it's going to be a great deal more costly. The way to tell they're going bad is to drop the own and pull them. You may see parts of the bearings in oil...
Its a bit like your underpants,you dont the extent of the problem until you take them off and have a look.
If you dont have any odd ticking noises,you MIGHT be ok for the time being.But dont dilly dally.
x2. So many people go to all the trouble of changing bearings and dont even know if they are within tolerance or not. These trucks with bearing problems shouldn't have a cavalier mechanic.
It's hard though as many dont listen. Especially when they pull out stuffed bearing and put the same size back in WTF?? Theres a reason they are like that. The excuse I get back is "it's ok, I'll just change them every year." 
The next thing I hear is they want to upgrade turbo's and run higher boost lol.
The next thing I hear is they want to upgrade turbo's and run higher boost lol.
First 80 series I bought had a lunched bottom end. The previous owner had purchased new bearings. Guess where he put them. In his glove box... There was no indication of trouble and so he didn't install them. Then one day- BANG! Good for me but very bad for him...
The last 1hd-t I did had bearings that were in fine condition but I was happy to know and felt even better knowing that now there were new ones in there.
The last 1hd-t I did had bearings that were in fine condition but I was happy to know and felt even better knowing that now there were new ones in there.
If you have any doubt, just replace them.
I replaced these in time Luckily
I replaced these in time
Luckily
The point Gerg and I am trying to make. Is that wear in the pic isn't from old age, or bad bearings. If you replaced them with same again with out checking they are the right size - expect to find the same again next time you change them - or bang...
Being in as bad of a condition as they are, did you check the crank for pitting and damage aswell?
I even went 1 step further and checked every single bearings clearance. I didn't need to, as the crank machining was fine. Some engine builders just measure the crank and the caps. Then work it out from there. Still not as accurate as plastigauge IMHO.
Being in as bad of a condition as they are, did you check the crank for pitting and damage aswell?
I even went 1 step further and checked every single bearings clearance. I didn't need to, as the crank machining was fine. Some engine builders just measure the crank and the caps. Then work it out from there. Still not as accurate as plastigauge IMHO.
bang ?
I just posted regarding a loud knocking noise on my hdj81, what happens when a bearing fails? Does the piston go to far up and hit the head?
I just posted regarding a loud knocking noise on my hdj81, what happens when a bearing fails? Does the piston go to far up and hit the head?
I have done 2 trucks so far, its not a hard job.
Plastigauge everything. I forget the correct clearance size. If someone knows please post it, I have to do my HZJ77s in the next 2 days as my turbo is on and the pan has to come off anyway.
I am even going to the extent of doing my HZJ75s at some point just for the hell of it. 425,000kms on it. Should be a good indication on how it was kept.
Plastigauge everything. I forget the correct clearance size. If someone knows please post it, I have to do my HZJ77s in the next 2 days as my turbo is on and the pan has to come off anyway.
I am even going to the extent of doing my HZJ75s at some point just for the hell of it. 425,000kms on it. Should be a good indication on how it was kept.
FSM says that the correct clearance is .0014 to .0021"
I dont know if it allows it to up that far? Unless you have no bearing there at all
. You may have a bent valve. Can you hear a pffft noise in the exhaust at idle?Due to the high compression of diesels. Just rip the thing apart
. Your only causing more damage by driving it.
The BEB problem originates from the fact that toyota did change the bearing material in (early?) 80 series for some odd reason that no one can figure out... It was eventually fixed by changing the bearing material (back to original?)...
So what you're saying is some trucks had the wrong size bearings in from the factory? Couldn't disagree more.
The well documented BEB problem has got NOTHING to do with wrong size bearings and EVERYTHING to do with breakdown of the bearing material. The later FT models are not immune either. I checked mine and found one badly pitted/delaminating bearing, the pin was perfect. JMO
I think you will find Toyota changed their clearances to try and reduce the wear and tear. How do you explain after market higher quality bearings do the exact same thing? I was told this from the mr Toyota Australia himself. Regardless, your crazy if you don't check the clearances yourself. Then you know for sure.
I remember your call to me looking for a bottom end, so happy I had a good connection at the time
1 out of 10 bearings we did were baaaad......
My new handle Pete
Rob Lassman
Yup, that was the sweet deal for sure. I learned a ton on that one.
And, yes, the piston will hit the head if the bearings are excessivley worn. I had two valve marks in the top of one of my pistons. Didn't bend anything in the head though.