80 Series 1HD-T Big End Bearings

[zephyrheaven]

Sorry if this has been on before Ive tried the search function & cant find any posts on the topic - please advise if there is:

Anyway - had a nice 80 last year, all sorted for Xmas - heading down to Central all loaded up & just out of Rakaia 'tick tick tick' thought hmm thats crank speed, I dont like it - just before I could pull over tick turned into mega-knock (piston vs head)
Big end bearing #5 was totalled - 6 was on its way & 3/4 were going

Sold that truck because I had no time to fix it & wanted a 100 series

Gave up on 100's after I drove a few & bought another 80 same colour etc same spec but with locks

SO>>>>>>>>>>>>>>>>>>>>


Its been 8 months of madness & I decided to pull the pants off it & have a gander before a big holiday this xmas
1/2/3/4 all perfect couldnt fault em - 5 & 6 chipping & starting to go (will have pics tomorrow sorry)
Cranks are nitrided & super strong so not a dot on it - new ACL bearings in it today - amazing how much quieter it runs now too

Phew - dodged a bullet

I would recommend ANYONE that doesnt have history of bearing replacement (big end only) on their 80 to get stuck in
Order new con rod bolts too as they are stretch type - I bought Toyota but no doubt someone else makes them

I know the internet is full of info on this subject but I hope this saves someone following this forum

Cheers, James

[DaveM]

The problem is, it is amazing how many people think the B/E problem is a myth. I had to talk the local Toyota dealer into doing mine when I first bought it, because there "has never been an issue with bigends in these motors"

$1200 to be safe is MUCH better IMO

[Jay]

Gidday - Certainly not a myth, I've had 2 80's - didn't know much about them with the 1st, but thankfully noticed the considerable drop in oil pressure before it did any damage, so I dodged a bullet there too. Did the 2nd the day after i brought it, and they were already showing signs of deterioration - Once there done though, never any issues!

[rokhound]

It only affects the earler 4.2 Turbos. Non turb engines and the 24v models did not have the issues of the big end bearings failing (or so I was led to believe any way)

[wjw]

so is there any way of telling if they have been done?

[Jay]

Unfortunately not.... They only way is to inspect them.... and if you loose oil pressure once the engine is at operating temp, this sets off warning bells! (My needle used to drop all the way to the bottom of the gauge once it warmed up!)

[badnuz]

yup the factory gauge will struggle to the 1st 3rd mark at hot run and dive away at hot idle.... easy to do and the ACL caps are cheap (something like $150 a set from memory) and last well. Bosses 80 did 320km on a set and they were still in good condition upon inspection at a recent service..

[Jay]

Yeah thats about what mine cost me.... and thankfully you can remove the sump in place on the 80, unlike a pajero I had once, engine out job... Nitemare!

[wjw]

so the fact my oil pressure stays up is a good sign then

I would hope they would have replaced them when they recon'd the engine

[Jay]

Thats a good sign wjw You would hope that it would be something they would replace on a full engine recon!

[zephyrheaven]

the oil pressure on my old one always hovered between half and just above low = it was still reading ok when it ran the bearing so wouldnt rely on it

[Andrew1706]

I would never ever trust the factory oil pressure gauge. Mine always sat at just below to on the very bottom line

But when I pulled the motor down there was no wear on the the big ends only a few scratches and that was 80,000kms.

Am I right in saying that the dodgy bearings are any that are factory?

[Jay]

Your right Andrew, I wouldn't reply solely on the oil pressure gauge, but it gives an indication that there could be trouble.... And it seems to be only the factory ones that give problems, after replacing with aftermarket one's, they don't seem to give any issues

[4x4girl]

Can anyone please clarify that the 24 valve models were free of big end bearing issues. I see there was one reply quoting that they are free of issues but that was posted a few years ago cheers

[Jay]

Hi 4x4girl,

To my knowledge, the 24v models were not affected by the dreaded big end bearing issues - just the 1HD-T (12 valve, 4.2 turbo).

Cheers,

Jay

[wopass]

for the sake of a set of shells at $150 and a couple hours to change them its not worth the risk of leaving them. mines a 24v motor and i did mine just to be safe.

[4x4girl]

for the sake of a set of shells at $150 and a couple hours to change them its not worth the risk of leaving them. mines a 24v motor and i did mine just to be safe.

Thanks for your input guys, where did you get your shells and bolts from wopass? I run a Nissan safari winch truck normally and have brought the VX as a tow wagon. Liking it already

[philipw]

Terrain Tamer

[suzolla]

Also STA Parts in Auck for bearing, not sure about bolts.
Cheers
Tim

[wopass]

as the other guys said sta or terrain or even ripco/appco if you have contacts, think the last set i bought was 140? thru mate at ripco, just means you have to pull your shells to find out what size they are then order as even from standard they can be under or over size just as easily as std size, i didnt do my rod bolts just the shells.

24v VX tow wagon...sounds familiar... cant beat them

[suzolla]

STA parts don't do rod bolts but I have a set of genuine toyota new ones if you are interested, alot of people don't change their bolts particularly if it is the first time bearings changed. But then again some people reckon you should, on one of mine I didn't and on other I did.
Cheers
Tim

[Trundle]

We stock genuine toyota rod bolts and acl copper nickle full life bearings as a kit and have replaced a shit load, so can help you with clearances torques etc ,

[Gardengnome]

A mate has just bought an 80 series. I mentioned the chatter regarding big end shells before he bought it and he was surprised. Mentioned it again to him after he bought one and he sought info from Toyota. Bloke at Toyota said in 14 years at Toyota he has never heard of it.

He put truck into Rick at 4WD accessories for the rear shocks and talked it over with rick and was shown some shells from a good running engine. They were on the way out.

He had rick do them and when he picked it up was told to get a lotto ticket on the way home. They recon there was a month left before she went pop.

Never owned an 80 but was looked at them when I bought a KZJ78. For the cost I considered it cheap insurance for the engine and would have had it done ASAP after purchase.

Plenty of "glad I did that" and "oh sh1t" stories on ORE.

[Trundle]

we did 5 sets last year , the 5th one ended up needing a new crank and rod , was running fine but had no bearing left !!

[4x4girl]

We stock genuine toyota rod bolts and acl copper nickle full life bearings as a kit and have replaced a shit load, so can help you with clearances torques etc ,

Hi trundle roughly what's the cost for a set. I'm new to ORE so not sure yet how to private message. Will have a look. Would love your input on torques etc when I dive in.

[Trundle]

$400 including gst for 12 genuine rod bolts and full life copper nickle bearings ,
$85 for just the big ends ,if you dont want the rods ,
We also stock the genuine toyota sealant for the sumps and platiguage for checking clearances ,