Aftermarket Race Bearings (main/rod)

240witSR · Oct 30, 2007

Im looking into new bearings for my engine (aside from the OEM) and it says the ACL bearings all come in standard size.

Now....Correct me if I am wrong, but this means i will need to hone/machine my rods and main journals to fit these bearings properly for oil clearances since they are not in different grades like OEM...?

rexbo · Oct 30, 2007

if you're replacing bearings or rebuilding an engine, its a good idea to make sure that the crank journals and the rod journals are perfectly round anyways, so you would be doing the machine work regardless.

Nismo makes nice crank and rod bearings for the SR which come in OEM sizes, but have a machine shop check your rod and crank bearings for roundness and finish before ordering new bearings.

240witSR · Oct 30, 2007

I always use a bore scope on my journals myself since I have access to these tools at Volvo. I never just automaticly line hone the bearing journals on a rebuild. At most I deck the block and head, hone the cylinders for cross hatch, and then do a valve job.

I dont like the idea of just one grade bearing. I believe I will stick to OEM due to different grades/clearances.

Shaggy's 240 · Oct 31, 2007

mm go with clevite or calico they have the best shit, they sell all their bearings in +1 and standard, the +1 being .05 smaller than the standard bearings that way you have room to work with.

drift4life · Oct 31, 2007

be sure to check ur bearing when u get them... i went to orlieys and picked up a set of federal mougal bearing (standard) and every single one of them were out of spec.. but they let me pick throught some more sets to get the ones i needed.

240witSR · Oct 31, 2007

Well i worked for Nissan for a few years and have ordered bearings before for my SR. I plan on sticking with OEM because if its good enough for that company to use in an engine that is supposed to be of great quality and last thousands if not hundred of thousand miles, its good enough for me.

Mastaflash · Nov 2, 2007

you can get different grades for the bearings. i got oversize bearings for mine since i had my crank turned. i went through mazworx to get the size i needed. try giving them a call.

drift4life · Nov 3, 2007

i think he is reffering to the factory graded bearings.... the factory cranks had grades which were different by a very little amount (look in FSM for actual amount) but graded bearing make up for this amount and make the bearing clearances better.

KB240SR · Nov 3, 2007

Contact Mark from Mazworx. He uses Calico Coated ACL Race Bearings with his builds.

Aftermarket Race Bearings (main/rod)

240witSR

rexbo

240witSR

Shaggy's 240

drift4life

240witSR

Mastaflash

drift4life

KB240SR

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