Machine Shop Help

[hockeyrules]

Alright so I'm in the process of rebuilding an SR, so I decided to fully build it.

Block was in decent shape but definatly eeded machine work.
So I called around for a good local machine shop, took it there, and asked them to specifically do a couple of certain things.

I hadn't heard anything, so I make a trip down there and guess what its already done?

So i start talking to the guy who did the machine work and I asked him what size of bearings I am going to need to order, (because I had the crank micro polished and the main caps align honed).

The machinist doesn't seem to know what I'm asking so I rephrase my sentence. The three sizes are standard, .01 smaller, and .01 bigger for the clearances, he says" just go with standard". This is for mains and rods.

So should i just go with standard even though the machinist didn't seem like he measured much?

[punxva]

you could always measure them yourself just to be sure.

[hockeyrules]

that's what I'm gunna end up doing. I just didn't want to buy a micrometer

[Darius]

If he just micropolished things, it isn't going to remove enough material to require an increase in bearing thickness. If you had standard bearings on there originally, standard bearings should be reinstalled. To double check, just buy and install the standard bearings and put some plastigauge between the bearing and crank journal to verify the gap is 2X the specified oil film thickness. If the gap is good, then you just saved yourself the money on micrometers.

[ManoNegra]

We've never had good luck with plastigauge
we like measuring everything out with micrometers and bore mics
to calculate clearances
it's really the best way to do it
although I understand not everyone has these types of tools just laying around

[hockeyrules]

If he just micropolished things, it isn't going to remove enough material to require an increase in bearing thickness. If you had standard bearings on there originally, standard bearings should be reinstalled. To double check, just buy and install the standard bearings and put some plastigauge between the bearing and crank journal to verify the gap is 2X the specified oil film thickness. If the gap is good, then you just saved yourself the money on micrometers.

Thank you so much for the info, the problem is I don't know which oe grade the orginal bearings were.... and for the rods, the guy shaved off the the numbers that give you the rod sizings....So I dont really have any place to start other than micing it all out.

We've never had good luck with plastigauge
we like measuring everything out with micrometers and bore mics
to calculate clearances
it's really the best way to do it
although I understand not everyone has these types of tools just laying around
Yea I would rather do it right then have to do it twice. Thats the problem is i'm building one motor so I would rather pay some just to mic it.