rod bearing clearance

[humaxxx]

Hello,

I have a question about the rod bearing clearance.

I have:
- a 460 Siamese bore engine stroked to a 514ci. (0.080 overbore)
- aluminium rods from manley
- castrol R40 oil

Can somebody tell me what the clearance should be of the rod bearing.

Car is for dragrace

greetings

Freek (from Holland)

 

[rbohm]

Hello,

I have a question about the rod bearing clearance.

I have:
- a 460 Siamese bore engine stroked to a 514ci. (0.080 overbore)
- aluminium rods from manley
- castrol R40 oil

Can somebody tell me what the clearance should be of the rod bearing.

Car is for dragrace

greetings

Freek (from Holland)

i like my bearing clearances for drag racing to be around .002-.0025, and no more than .003. i know some will tell you that sounds a bit loose, and for most street or race engines it is a bit loose, but on a drag engine you want it a bit loose, and you want to freshen the engine up a couple of times during the season.

 

[humaxxx]

thanks

 

[humaxxx]

can somebody tell me what the clearance is of the main bearings with the same set up!!

 

[rbohm]

same with the main bearings.

 

[humaxxx]

hello,


My big end (chevy 2.200) of the crank from my 514ci Ford has to be polished. I have oderd the following undersize beaings 0.010!!

http://store.summitracing.com/partdetail.asp?part=CLE-CB743HDK10&autoview=sku

I want to have a clearance of the rod bearing between 0.002 and 0.0025

What must be the diameter of the big end of the crank??

I think between 2.200 - 0.010 - 0.002 = 2.188 and 2.200 - 0.010 - 0.0025 = 2.1875

I am right!!!!!!!!!!

greetings

Freek (from Holland)

 

[humaxxx]

nobody????

 

[woodsnake]

Just make sure your machine shop knows this, and you should be fine.

 

[v8xploder]

remember with bigger clearances to get a high volume/high pressure pump. Im running .003 on my rods/mains in my 532 that Im spinning at 7000RPM and i have a stage 1 pump from hyflowdynamics. Good luck!