thay were stock bearing but ACL racing, was runing 15/50millers

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ouch, i feel for you.

we running acl race bearings on my brothers but only 10/40 fully synthetic and its clocked up 12k and 2 fully trackdays at moment.. strange that some seem to give up easy and some dont.

is it clearances that could be down to this then kris?

Yes I think so. The clearances must be bang on, and the crank round for the engine to live.

One point of note is that everything must be immaculatey clean when rebuilding - including all the oil ways - both in the block and crank or the engine will be toast...

Easier said than done!

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Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
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Turbocharging - the replacement for displacement

Ditto

Again Kris has beaten me to the questions and answers also where the mains and thrust washers new.
I'll take an educated guess and say that the debris from your thrust washers failing took out your big ends. Why things failed will need to be answered to stop this happening again.
I believe, correct me if I’m wrong, but the ACL bearings only come in one size hence why I chose to go with the Mr T bearings in both big ends and mains as these come in several different sizes to get the oil clearances more accurate, did you do an engine flush after the rebuild? Dorris

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Black CS 2771

every thing was new when it was rebuilt, and was flushed thorw and all bearings had engine asembaly oil on them, were thinking now that the thurst bearing might of been fitted the worn way round but not shore

ACL do them in all sizes

http://www.aclperformance.com.au/Toyota ... arings.htm

Sizes STD, .025, .25, .50 STD STD, .025, .25, .50 STD
Oil Clearance Standard + 0.001" Extra Standard + 0.001" Extra
Half Type Identical Halves Upper & Lower
Material Tri-metal Hardened steel backs
Tri-Metal
Min Std Shaft Size 1.8892in / 47.985mm
2.1648in / 54.985mm

Max Std Shaft Size 1.8898in / 48.000mm
2.1654in / 55.000mm

Min Std Tunnel Size 2.008in / 51.004mm
2.3236in / 59.020mm

Max Std Tunnel Size 2.0088in / 51.024mm
2.3243in / 59.038mm

Max Wall at Crown 0.0586in / 1.488mm
0.0581in / 1.475mm
0.0787in / 2.000mm
0.0782in / 1.987mm

Max Overall Length 0.8386in / 21.30mm
0.7559in / 19.20mm (8361H/HX)

0.9055in / 23.00mm (8362H/HX)

Notes
Diagram
(Top View)
8361H & HX - Positions 1,2,4 5



8362H & HX - Position 3



THRUSTWASHER SET
Part# 2T1689 Material Bi-Metal Copper Lead
Sizes STD Notes Upper & Lower

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I don’t recall the thrust washers being directional, without looking I’m sure the standard Toyota washers are the same on both sides and can be fitted either way around, its the top to bottom halves that are different with the locking tab only on one half. Dorris

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Black CS 2771

im not rely shore as to why that failed but it has made a right mess of the crank and block

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Dorris' description matches my memory but what I can't remember is if there was a hard face an a bearing face.

In the pictures the thrust bearings don't look wide enough but there's so much damage it's impossible to tell really

I take it back, they are skinnier than my memory told me

That’s the bearing surface but aren’t they the same on the opposite side? Dorris

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Black CS 2771

so thats what it sould look like lol

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little up date i have now started the stip down read fo the full rebuild over the winter, there will be lots of photos as i go im hoping that i can re use my pistions and rods.

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ok managed to strip the old engine down to day,











and it’s not looking good from what I can see all of the rods will need replacing as that have been badly warn on the 1 side of all of them



here you can see that it has warn away the edge of the rod





and here you can see where bit of metal have hit the pistons and it is like this on all of them

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Awch! What rod and piston is the damage too? Dorris

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Black CS 2771

Its on all of them, without thrust washers the crank has walked and rods have all rubbed on sides of mains spinning main and rod bearings by the look of it... Pistons would more than likely be salvageable as its underside damage pitting, as long as sides and tops are ok and also no wear on pins once rods are off..