My 2005 R53 MCS motor is at the machine shop getting new pistons put in and my machinist needs the following specs:

Bore: 85.8mm
Stroke: 77mm
Rod Journal:
Rod Housing:
Main Journal:
Main Housing:

I was able to find Bore/Stroke in my Bentley manual but I've been unable to locate the other specs (reliably). I've read every page of the Bentley manual, called my local Mini dealer, searched extensively online, called a couple Mini performance retailers, and can't find the other specs. RealOEM has them listed but I've found other posts here on NAM that claim them to be the specs for the R50 motor.

Can anyone please help me with these? The rebuild has been on hold for 2 weeks waiting for me to find these numbers so I can get parts ordered and I don't want to spend $500+ on the wrong bearings.

If you are able to provide numbers or know of somewhere/someone I could talk to get them, Thank You!!!

 

Mike@tech should know.

 

This may help you for the rod specs:

http://etuners.gr/en/index.php?s=12&t=301

but you have not said what year/model engine you have.

 

Thanks for the heads up OKCdancer. I've updated my post with year and series.