Bearings

[Vetal]

Will these fit?http://cgi.ebay.com/ebaymotors...30541

Or should I go for Nissan OEM?Are they the same for CA18DE and CA18DET?http://www.trademotion.com/par...gid=1

Please help

[c-rad]

Those are 0.25mm oversize, so unless you had your crank turned, they won't work. And yes, DE and DET bearings are the same.

EDIT: Here is the standard set... http://cgi.ebay.com/ebaymotors...=WDVW

[Vetal]

Then please help me a bit more with those sizes...I was told that crank out-of-roundness is 0.04mm, so they need to grind it. In that case I need undersized bearings, right?

[c-rad]

Then please help me a bit more with those sizes...I was told that crank out-of-roundness is 0.04mm, so they need to grind it. In that case I need undersized bearings, right?

No, if the crank is ground down, you need to use oversize bearings to make up for the area ground off. Just ask the machine shop exactly what you need and they will tell you.

[Vetal]

I can see only "undersized" in service manual, not oversized... Is that just a difference in terminology?So, if crank is ground down, I can't use "graded" bearings anymore, I must go for 0.25 over(under)sized?

[Not_a_sr]

just had the machine shop get mine, i ended up with clevite bearings.

[cuzan0]

No, if the crank is ground down, you need to use oversize bearings to make up for the area ground off. Just ask the machine shop exactly what you need and they will tell you.

I plastigauge all my bearings even after it comes from the machine shop ,cause the clearance on the new bearings they give may still be off.. If you dont know what plastigauge is here is a link http://www.plastigauge.com/ also it is under $5.00 to buy

[Vetal]

Are there UNDERsized and OVERsized bearings? Or it's the same just people call it differently?

[Vetal]

OK now I know they under oversized people really mean UNDERsized...

Now, being told they need to grind the crank, do I have to order 0.25mm undersized bearings?

If so, how do they know how much to grind away and what diameter to go for? I'm sure if I don't check it the shop would grind the crank so clearances would be anywhere between 0.001-0.500mm... So what do I have to tell them?Thanx!

[c-rad]

If so, how do they know how much to grind away and what diameter to go for? I'm sure if I don't check it the shop would grind the crank so clearances would be anywhere between 0.001-0.500mm... So what do I have to tell them?Thanx!

Print out the EM section of the FSM....drop it off to them and say, "Get me the right stuff and make it fit". Make sure to get a printout of before and after for what they do. Also, make sure you are taking it to a shop that has experience with 4cyl import motors. A lot of the redneck shops that normally work on big V8s, don't have micrometers that read to the ten thousandth place as the tolerances are much more forgiving in the V8 motors as long as you keep them full of oil. But yeah, drop off the engine section of the FSM and have them get you the right stuff.

[Vetal]

Goog idea Thanx!Any other suggestions?

[biosehnsucht]

I've actually got some clevites that are oversized somewhere, got them off ebay, seller didn't indicate the size. they were cheap tho.

i can look tomarrow at what oversize. personally tho, I'd say go get some federal mogul bearings, the clevites look like **** in comparison to the federal moguls I ended up putting on there..

[Vetal]

Well... I haven't made up my mind about grades/clearances, now you are confusing me with the make of bearings Where can Fed.M. be found?

[biosehnsucht]

we got ours at O'Reilly Auto Parts..

[Vetal]

Maybe they have a site?

[c-rad]

Maybe they have a site?

Advance Auto Parts (same thing) has a site you can order from... http://www.advanceautoparts.com

[Vetal]

Please tell me which of these .25mm main bearings do I need?http://cgi.ebay.com/ebaymotors...91405a ... ..30541The sellers says the following:"The 1565's have an overlength flange, do you want that or check out MS2073. That one is a standard length flange."

[cuzan0]

Please tell me which of these .25mm main bearings do I need?http://cgi.ebay.com/ebaymotors...91405a ... ..30541The sellers says the following:"The 1565's have an overlength flange, do you want that or check out MS2073. That one is a standard length flange."

Dude before you go out and buy bearings you'll need to PLASTIGAUGE clearance between the rod and main bearings to the crank then measure the smashed PLASTIGAUGE, and that'll tell you what size bearings you'll need...Like i said before when i rebuild engines i always measure bearing clearance from just rolling bearing in the rods (cheap easy fix) or even when the machine shop did their thing i still double check bearing clearance cause they still could give you the wrong size bearings... Here is a HOW IT WORKS LINK http://www.plastigauge.co.uk/howitworks.htm

[Vetal]

cuzan0: my mains will be ground down so I can't measure it NOW; machine shop told me to get .25; now I can't understand which of those I posted are correct...