2zz Rod and Main Bearing Size Marking

[jonty]

Hi chaps, if you can help me avoid making a silly mistake that'd be most appreciated - I'm rebuilding my 2zz, and want to replace the bearings since they look a little tired. In the service manual it says the rod sizing is 1, 2, or 3, but the character that changes is the letter at the end:





What does the A or C mean? And are my rod bearings definitely size 1?

Also, with the main bearing the following markings were there:

D0L B1
  4

And:

D1B B
  3

so is this the 0/1, or the 4/3?!

Thanks!

[cabbydave]

Toyota are well known for putting different size bearings on the same crank ie journal 1 say size 3 journal 2 size 1 only time they are all the same size for sure is if it's been ground

[Anonymous]

Is there a way to measure and find out what ones are needed?

[jonty]

Cabbydave, thanks for the input, that's interesting! Can you tell me which character is the critical one? From your rebuilds, is it the 1 of D1B that is the size? ESM only says about 1, 2, 3 determines the size, but the chaacter that changes is the A and C...

Rich, yes I can measure, I had some plastigauge delivered this morning, so I can check the clearances with that; in the ESM it says to measure and replace if the clearance is out of tolerance, however I think they look a bit tired anyway, so would prefer to replace them all regardless - ESM says to replace with the same size as were originally fitted.

I was orginally planning on lining this block and building with forged rods and pistons and putting a rotrex on it, but a house, wedding and baby on the way mean I'm scaling back to just a plain run of the mill 2zz... if this has been the orginal plan I'd ahve bought a lower mileage engine, and not opened it up at all...

[jonty]

now that we're all awake and heading for lunch time... can anyone shed any light on this for me?!

[cabbydave]

I can check when I eventually get home

[jonty]

cheers mate!

[jonty]

Anyone got any ideas on this?

[Anonymous]

Anyone got any ideas on this?

it'd be worth speaking on the phone to someone with experience of building these engines.

it isn't something you want to get wrong   s:scared: :scared: s:scared:

[jonty]

I posted the same thread on New Celica, and Smaay (their resident 2zz expert) said the rod bearings are size 2 for every rod that he's ever seen... My rods have 2 on the side of them all, but they also have loads of other guff, so without his info I wouldn't be confident.

I'm going to order a set of size 2 rod bearings and 3,2,3,3,4 mains, then plastigage everything before I do final assembly...

[Anonymous]

That's good news well done.

Are the parts expensive from Toyota?

[jonty]

Yeah these are expensive... In fact after all that, I decided to get MWR mains and King Rod bearings, since the costs were a bit silly for OEM... about $20 each for mains.

TBH now I just want to get the damn thing built - I'm frustrated that I don't have cash for a proper build, so I'm just going to slap it together and get the car back on the road - it's been parked up since April 2013, and two long years that I've been driving this god-awful Polo - I'm thoroughly sick of having such a souless car!!

[jaworjawor]

Find online "2zzge repair manual" there are 5 size marks for main bearings, you need to find the marks on lower block deck and marks on crankshaft, there is a table chart which bearings youvneed in manual once you find the marks. The same goes for rod bearings, 3 sizes, marks on rods and marks on crankshaft

[jonty]

Thanks mate, I did see that but was struggling to understand the marks on the rods, as there are so many!

I checked my order with MWR and turns out I had ordered OE size 2 Rod bearings, as this was the cheapest option... problem being that one of my items is out of stock, so the order i sheld until it is back in, so this will delay the build a bit  s:( s:(

Oh, and my plans for a quick build we scuppered slightly by the paint I used peeling off, even though I used shed loads of brake cleaner to degrease the block... so I bailed on that idea, and have masked it all up and will do some sand blasting as soon as I have some appropriate sand. I'll then paint with 2k, and as usaual it'll all snow-ball and end up being more of a project than I initially planned...!

[headcase]

[headcase]

Numbers are on the end caps

[jonty]

Thanks mate, the fact that they are all 2 had me confused, plus all the other guff on the other side!

Now sorted, and OE size 2 rod bearings ordered  s:) s:)