Rover main bearings big journal

[Bart]

Hi all,

I am about to start putting together my 5L stoker motor, using Icon pistons, H beam rods and Boost Performance crankshaft that I had machined to take Chevy rods. Using Wildcat heads also, and Kent M238 cam. Was hoping to get some bearings ordered this week to do a trial build at the weekend to check clearances etc...

It's going in a Chimaera for road use. Maybe the odd track day. If it's shy of 380hp, I'll be very disappointed. Hoping for closer to 400hp.

Spoilt for choice for the Chevy big end bearings, but there doesn't look to be much choice for large journal Rover main bearings. All I can find is King AM series or Glycol.

The crankshaft is nodular iron, and I have read that a bearing with a higher silicone content would be preferable in this case, such as the King SI series, but these don't look to be available for large journal Rovers. Not being a metallurgist, I don't know if the thing about silicone is accurate or worth considering, but it is what I read.

Is anyone aware of any other bearings that would be suitable and/or does anyone have any other recommendations, please?

Thanks!

[kokkolanpoika]

I will only use geneuine 4.6 Land Rover bearings on mains. They are tri metal bearings. Glyco and king's are aluminium and not good for high power output. I will use ACL duraglide for rod..
You will get over 400hp on stock heads. So all under 420hp is dissapointment.

[Bart]

Hi, thanks for your reply.

Ah, ok. I already ordered Clevite P series for the rods and King AM for mains. Looks like I didn't make the right choice from your advice, certainly for mains. I nearly ordered genuine LR ones, but I assumed they would be aluminium too.

I am only at the trial build stage, so I can still change my mind and get more suitable ones for final assembly.