2.2 non-common block Rod Bearings‏

Hey everybody,

Lately the engine in the wagon (I believe it's from an 87 CSX) has developed an ever so slight knock. So slight that I think most people wouldn't notice it...it doesn't seem to be a wrist pin noise, because this engine already has that, and that goes away once it's warmed up.

This noise doesn't go away when warm. I was thinking that it was a rod bearing on the verge of becoming a problem, so I pulled the pan. #1 rod bearing looks very good (to me). I figured no matter what, I'd change these regardless of how they looked. The problem I'm having is that I thought the bearing would be stamped with it's size (10 under, 20 under, 30 under, etc). But it is only stamped with a date "4-98" and above that it has the numbers "85".

Of course, I have 3 sets of "STD" bearings, and this one is obviously a smaller size. Anyone know what "85" stand for? I can't find a listing for an .85 bearing, and there aren't any other markings, so I'm not even sure which manufacturer this is.

Thanks in advance!

How do you know its smaller? They will be stamped with the undersize number, if not, its a STD bearing, which sometimes they also stamp on. Check the mains too.

Alot of the time the factory bearing it will have the year stamped into it, maybe the engine was built in 85. Can you read the stamping on the back of the block to confirm the year?

Well I'm almost positive the engine has been rebuilt, so I'm pretty sure the "4-98" stamping is the date that the bearings were manufactured. If I hold a new standard bearing up alongside this unknown bearing, the inner diameter of the unknown bearing is noticeably smaller. Unless someone knows what "85" means, it looks like I'll hafta borrow a micrometer and measure the crank...

I would plastigauge it and see what the specs are.

I haven't seen .010-.020 or .030 Plastigauge in a long time. LOL

Thanks
Randy

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Originally Posted by speedfreek500

I would plastigauge it and see what the specs are.

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Quote:

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Originally Posted by blk86trbo

Well I'm almost positive the engine has been rebuilt, so I'm pretty sure the "4-98" stamping is the date that the bearings were manufactured. If I hold a new standard bearing up alongside this unknown bearing, the inner diameter of the unknown bearing is noticeably smaller. Unless someone knows what "85" means, it looks like I'll hafta borrow a micrometer and measure the crank...

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Yep, 4-98 is the made date.

Quote:

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Originally Posted by GLHS60

I haven't seen .010-.020 or .030 Plastigauge in a long time. LOL

Thanks
Randy

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:drum:

Quote:

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Originally Posted by GLHS60

I haven't seen .010-.020 or .030 Plastigauge in a long time. LOL

Thanks
Randy

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He said the rod bearings are standard and he has standard bearings, Thats why i said to plasticgauge them instead of running out to borrow a mic.

Quote:

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Originally Posted by speedfreek500

He said the rod bearings are standard and he has standard bearings, Thats why i said to plasticgauge them instead of running out to borrow a mic.

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He was joking.

I wasn't joking this time, Paul is trying to determine how much his crank has been turned. He has some new std. bearings and they are not thick enough and he was asking if the "85" on his used oversize bearings might indicate something. Plastigauge won't tell him that.

Paul, have you checked for stamping marks on the crank? Most times machine shops stamp how much cranks have been ground on the front counterweight, eg. M 010 T 010

Thanks
Randy

Quote:

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Originally Posted by GLHS60

I wasn't joking this time, Paul is trying to determine how much his crank has been turned. He has some new std. bearings and they are not thick enough and he was asking if the "85" on his used oversize bearings might indicate something. Plastigauge won't tell him that.

Paul, have you checked for stamping marks on the crank? Most times machine shops stamp how much cranks have been ground on the front counterweight, eg. M 010 T 010

Thanks
Randy

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So you weren't joking about having .010 etc undersize plastigauge? If not, I think you shouldn't be rebuilding engines, :lol:

Plastigauge WILL tell you if you have a turned crank based on the reading you get, just not how much its been turned.

I think the original question was how to determine how much his crank has been turned and he was going to borrow a mike to check.

You state plastigauge will tell him is it's been turned, just not how much.

Perhaps I shouldn't be rebuilding engines as you state but in the last 45 years of doing so I still havent found a use for .010-.020 or .030 Plastigauge.

Thanks
Randy

Quote:

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Originally Posted by turbovanman

So you weren't joking about having .010 etc undersize plastigauge? If not, I think you shouldn't be rebuilding engines, :lol:

Plastigauge WILL tell you if you have a turned crank based on the reading you get, just not how much its been turned.

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Quote:

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Originally Posted by GLHS60

I think the original question was how to dertimine how much his crank has been turned and he was going to borrow a mike to check.

You state plastigauge will tell him is it's been turned, just not how much.

Perhaps I shouldn't be rebuilding engines as you state but in the last 45 years of doing so I still havent found a use for .010-.020 or .030 Plastigauge.

Thanks
Randy

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Wow, you said you've never seen .010 etc plastigauge, and you LOL'd, and yes, we know they don't make it, I thought you were joking about it, but it seems you weren't. Interesting.

I guess you're just trying to bug me or perhaps you're a post more. I know Plastiguage is available for up to about .070, I just never found a use for 010-020 etc. myself.

Thanks
Randy

Quote:

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Originally Posted by turbovanman

Wow, you said you've never seen .010 etc plastigauge, and you LOL'd, and yes, we know they don't make it, I thought you were joking about it, but it seems you weren't. Interesting.

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Quote:

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Originally Posted by GLHS60

I guess you're just trying to bug me or perhaps you're a post more. I know Plastiguage is available for up to about .070, I just never found a use for 010-020 etc. myself.

Thanks
Randy

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???????????? you LOL'd at your own post, I agreed and then you got pissy, so not being a post whore, just utterly confused.

I am done, sorry for the hijack. :(