I'm looking to see who's used which make or to find the best bearings, as i'm not sure which is the best option for the vg30dett,

ACL look a good bearing with good reputation, but they only use one grade,

Nissan use graded which need to be matched with plastisize (more acurate me thinks)

Z1 use a different profile and machine the crank to use different bearings,,,too expensive

 

what is the mostly recommended performance bearing used ????

 

rich

I'm looking to see who's used which make or to find the best bearings, as i'm not sure which is the best option for the vg30dett,

ACL look a good bearing with good reputation, but they only use one grade,

Nissan use graded which need to be matched with plastisize (more acurate me thinks)

Z1 use a different profile and machine the crank to use different bearings,,,too expensive

 

what is the mostly recommended performance bearing used ????

 

rich

 

The OEM bearings are very good. But this is a question depending om what you mean by "performance".

Use the OEM up to 600 BHP, perhaps even more. The point is the tuning of your engine. If it is perfect tuned, you can trust the bearings on even higher performance. So everything is about precession in tuning.

 

I use ACL after breakdown of the OEMs > 800 BHP. The mistake was poor tuning, so it is not for sure that the OEMs woukd break down if I did my homework better.

 

Search for the bearings on the forum, then you will understand better what is the best for you. There are many very professional threads about this.

hi jorgen, the reason i asked was i'm doing a full rebuild with forged pistons/rods/ jwt tubs cams etc and wondered what was the best option of bearings to use, seen as ive used the lead backed bearings before in other engines i have built, but was not sure which would make the bottom end bullit proof if possible, also to prevent less chance of failure.. but i know a lot of the evo guys use ACL,

rich

hi jorgen, the reason i asked was i'm doing a full rebuild with forged pistons/rods/ jwt tubs cams etc and wondered what was the best option of bearings to use, seen as ive used the lead backed bearings before in other engines i have built, but was not sure which would make the bottom end bullit proof if possible, also to prevent less chance of failure.. but i know a lot of the evo guys use ACL,

rich

 

Hi again;

 

I did some research both on the forum but also elsewhere, and most signs pointed at ACL as a bullet proof bearing. Their business is high performance parts, so there are many reasons to trust them.

 

There are different features for the softer OEM bearing compared to OEM, one of them is that it can stand dirt in the oil much better. For you and your high performance engine, I guess you will probably be more concerned with good and clean oil than an average ZX-owner.

ACL has 2 metals (OEM has 3) and is harder. The oil is to prevent contact between metals crank-bearings-rods but it is more likely that high performance engines get into situations where metal hits metal, and hard metal will then have an advantage - I believe and hope.

thanks Jorgen, yeah thats what i believed too but wan't sure on the ACL as I know sometime some after market manufacturers parts don't always work as well on some cars ..

rich