80 series 1HD-T Big ends & oil pressure problems ?

Submitted: Sunday, Jan 07, 2007 at 20:51
ThreadID: 40971 Views:7603 Replies:1 FollowUps:0
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Hi all
We have an 1992 80 series factory turbo like every other one it has had its big ends done before. Motor blew up then had Full rebuild by toyota in 1996,

They were Re done 100 000kms later by Toyota with genuine standard size bearings in 2001

All by the previous owner, since we have owned it the oil pressure looks low on the gauge. This week we decided to take a look at the big ends and were shocked to see that the bearings were well worn one of them starting to flake

These bearings have done 190 000 kms and are ment to be the better quality that toyota are using today

What concerns me is should i check the big ends in my 100 series 1999 turbo 1hz 273 000km turbo since day one ?

They are the same bearings !

Has any one found a problem with a 100 series yet ?

Since chaging the bearings i have cheacked the oil pressure with a master gauge and it is within Specs 28psi @ idle and 75 psi @3000 rpm

But the gauge still looks low Sits almost at the bottom at idle and only gets up half way at 3000 rpm

Is the gauge a common problem for looking low ?

Thanks
Luke
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Reply By: Member - DOZER- Monday, Jan 08, 2007 at 21:08

Monday, Jan 08, 2007 at 21:08
Hi
Toyota had alot of cruisers recalled because of these problems, the gauge is lucky to get past 1/4 so yours must have had a new sender....change the bearings every 100.000 kms to be sure, they will never stop wearing out, i believe it is because of the low oil pressure, yours is higher than normal.....my mates runs 30/55....the bearings are only $500 done every 100k, so small price to pay. No 1hz has ever had this issue, their pressures are 60 hot/90 cold
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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