Bottem end bearings for 1GGTE

[The Real Roadrunner]

if your bearings were that rooted that the piston touched the head the crank will be scored (generally) and the rods will definately need to be closed and honed.

personally id take it to a machinist and get them to set it all up,

cheers
linden

[Hengsta]

Did a little research..

I took all the bottem bit of conrod bearings off and line them up, each one had the number 4 on it except the one i spun the bearings on had number 3 on it now thats why it spun a bearing. Who ever did the rebuild before used a Gen 2 bottem conrod bit for it.

now im guess i have to start searching for one. anyone got a piston and conrods? Gen 3 with a number 4 on the bottem of it.

[love ke70]

i probably do, ill look either in a little while or tomorrow
now u mention it i remember those numbers.

btw, what was the quote on the bearings?

cheers, andrew

[Hengsta]

i probably do, ill look either in a little while or tomorrow
now u mention it i remember those numbers.

btw, what was the quote on the bearings?

cheers, andrew

Sick im hoping you have got one.

The dude didnt give me a qoute on it cause he told me to find out what number it was first and ring him tomorrow.

mehh i got another guy thats getting me qoutes.

btw mate cheers for the help for this whole process crap

[Forcefed6]

I would find out if the crank is still usable before buying any bearings at all.

If it has spun a bearing, and as Roadrunner said you will most likely need the rods resized too. Along with this, the excessive heat around the spun bearing, you will gennerally fing small cracks in the crank. Another good place to check for cracks in the crank might be where the centre main bearing is (where the thrust washers are). This is where my crank was cracked, although i spun a bearing on No.6 (or No.1... I cant really rember which now)

[Mr Revhead]

3/4/5 im sure are the oversizes. My rods had a 3 stamped on the side of them and they were standard sized to suit the 42mm crank.

no, they are all standard.
toyota do not do one size of standard.
because of the number of engines they build, to account for production line variances they do grades. the blocks are graded and so is the crank and rods.
you use the number stamoed on the block and crank to work out what grade bearings you need.
so you could get 2 brand new engines and they can have slightly different sized bearings.
which is why you ALWAYS measure

heres a good thread on it:
http://forums.toyspeed.org.nz/viewtopic.php?t=39150

[Hengsta]

^^ You are a legend mate.

cheers for the info.

[6BOOST]

Spot on MrRevhead, I Was just about to post the exact same thing, the numbers are just slight variances in size. So if you had the exact same size hole, a number 1 would have the most clearance on the crank and a number 6 would be the tightest clearance, the graded bearings are simply to allow for variances in machining at the factory as MrRevhead said. Chevs and stuff do the same thing, but rather than a number I think they use colours, so an orange bearing may be tighter than a purple or something.

As for the rest of your engine, with much 1G exprience, it sounds like you need some professional help with it, otherwise your going to buy lots of parts, then half of it will be useless. If you've spun a bearing, you 100% will absolutely need to regrind the crank, which means toyota bearings are a no go as they don't make oversize bearings for the 1G.

The simplest thing you could do is push it in the corner, pull out the Gen2 engine and get all the bits for that, toyota 4K big end bearings and 3SGTE main bearings, you'll need 2 sets of each, total will be about $200-250 for the lot. You can use 4K or honda piston rings, and a factory toyota head gasket is about $90 for toyota. If you want to do valve stem seals, order ACL ones for a 7M, they are about $30, and most of the other gaskets throw out and use 3 bond sealant, water pump, timing cover, sump all can use 3 bond, I'd just reuse the factory intake manifold gasket with some 3 bond, and some new exhaust manifold gaskets.

Cheers...................6BOOST

[Hengsta]

^^ i was waiting for you to reply in my thread

hrmm well i guess i will be doing the Gen 2 engine instead. but i seriously cant be bothered taking the engine out of the car.

if both of the engine is just trouble im just gonna push both of them into a corner and i will just wait abit untill stuff gets approved on my other car and take the 1J out of it and wack it into my current one.

[Stefan]

Well, FWIW, my 1G has been rebuilt and my mate didn't have any trouble getting non-genuine bearings for it. The rings ended up being an odd size though - ended up having to buy 2x sets of 4 Honda rings.

[love ke70]

Well, FWIW, my 1G has been rebuilt and my mate didn't have any trouble getting non-genuine bearings for it. The rings ended up being an odd size though - ended up having to buy 2x sets of 4 Honda rings.

stefan, that must have been a gen 1 or 2, the gen 3 you cant get aftermarket bearings for.
and 2 sets of 4k rings do the job too

hengsta, do you still want that rod cap/rod or not? i ahvnt bothered looking to see what i have yet

[Pube]

I dont think it would hurt if you took your engine to a well known machinist and asked if they could find bearings to suit. You never know, they may find something to suit the 44mm crank. My engine has the pistons with the 1.2mm, 1.5mm and 4mm sized rings and was told that you could only get genuine rings for these pistons. However the machinist found that you can use honda rings. With the 1.5mm, 1.5mm, 4mm piston rings, 4K rings can be used.

[Stefan]

stefan, that must have been a gen 1 or 2, the gen 3 you cant get aftermarket bearings for.
and 2 sets of 4k rings do the job too

Yes, Gen 2.

[Hengsta]

stefan, that must have been a gen 1 or 2, the gen 3 you cant get aftermarket bearings for.
and 2 sets of 4k rings do the job too

hengsta, do you still want that rod cap/rod or not? i ahvnt bothered looking to see what i have yet

I found one already mate,

Cheers for the help tho.

as above said might be taking the crank out and get it checked out.

cheers for all the help guys much appreciate it

[6BOOST]

I can promise everyone in this forum, there is no 44mm bearing from another engine that will fit. Funnily enough, King actualy list the bearing in their catalog, but just don't make it. Yet. Maybe if we start a petition or everyone emails them they'll start doing them??

As for rings, its not hard to get 1.2/1.5/4mm rings, Jamie just put some in his engine, not sure what they came out of, I have a guy I just ring and he has 1000's of hastings ring sets and tell him what I want, next day they show up and fit straight in. Couldn't be easier.

6BOOST