ACL is Australian made and they are what I use in my engines.
I actually purchased a set of ALU GLIDES for use in my motor. They were suggested by an engine builder which I wasn't too happy about so I decided to give ACL a direct call to the tech guru. They told me not to use them on a performance car. They are designed for use on low power, daily driven cars. They are available due to the environmental concerns of some manufacturers.
In any case, I'd go tri metal over anything. Do you know if the OEM stuff are tri metal? if so, I'd go for them over ALUGLIDES.
When I spoke to the ACL tech guru, he stated that the ALLOY bearings are actually more brittle and are inferior to the trimetal bearings (duraglides and race). As for the RACE bearings, I believe they are pretty much the same as the duraglides, but have no cosmetic coating on the surface and they are more rigid in the backing on the bearing. The Duraglides have a silver coating that pretty much comes off when you wipe them down with a rag.
Bearings are cheap anyway.
You could get a set of rod and mains for under $200.00 USD.
Also depending on your clearances, you may only be able to get them in durglides and not race.
Here is a copy and paste of the ACL RACE bearing description on the website:
The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings.
Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:
* High strength overlay plate
with reduced thickness
* Hardened steel backs on all Conrod Bearings
* Increased crush and elimination of flash plating
* 3/4 grooving on Main Bearings providing optimum oil supply
* Tight consistent wall tolerances
* Oversize chamfers where applicable
These performance engine bearings are also available as part of a complete
Here is a good read:
click
And the final verdict on that page:
Duraglide bearings provide a combination of high strength and the ability to withstand harsh/demanding operating conditions. This makes them ideal for performance/race engines and rebuilds.
Aluglide bearings provide a combination of moderate to high strength, good seizure resistance and excellent wear resistance. These bearings are ideally suited to general purpose applications (passenger cars and light commercial vehicles) where reliability and long service intervals are desirable. Aluglide bearings are highly preferred in modern import engines that have been designed for aluminium based bearings as OE standard fitment.
