Most bearings are good enough for most your needs as the industry's standards are very strict in quality assurance. Good luck with the ACL race bearings if you choose to purchase them. Be sure and check everything a few times before buttoning-up your bottom end. All depends on the conditon of your crank as well as preparation of said crank. If your journals have issues and these issues are not address, then if doesn't matter what bearing you use because they will eventually fail.Spawn_CA18 wrote:surely im going to use aftermarket parts, to be honest i considered to buy oem bearings , but after searched a little i see aftermarket bearings is much solid then oem ones..
a friend of mine using tomei , but i cant fine tomei bearings on net. so i think im going to buy ACL Race main and rod bearings. but still want to know what you are using
Most bearings are good enough for most your needs as the industry's standards are very strict in quality assurance. Good luck with the ACL race bearings if you choose to purchase them. Be sure and check everything a few times before buttoning-up your bottom end. All depends on the conditon of your crank as well as preparation of said crank. If your journals have issues and these issues are not address, then if doesn't matter what bearing you use because they will eventually fail.Spawn_CA18 wrote:surely im going to use aftermarket parts, to be honest i considered to buy oem bearings , but after searched a little i see aftermarket bearings is much solid then oem ones..
a friend of mine using tomei , but i cant fine tomei bearings on net. so i think im going to buy ACL Race main and rod bearings. but still want to know what you are using
Just what I meant to say "good luck" as in good luck at whatever you try to do. Please accept my good graces and build a great running engine........Spawn_CA18 wrote:what you mean with ; ''Good luck with the ACL race bearings if you choose to purchase them'' ? is they not good enough?
surely measurements will be perfectly. i have build some japanese engines few times.and a specialist will take care of my crank.
He means this.Spawn_CA18 wrote:what you mean with ; ''Good luck with the ACL race bearings if you choose to purchase them'' ? is they not good enough?
surely measurements will be perfectly. i have build some japanese engines few times.and a specialist will take care of my crank.
The crank didn't need a machinist as there was never any damage to it. The only reason I tore the engine down was to replace the oil pump and even then, the stock bearings were still in excellent condition. I polished the crank as I done so many times before, but didn't plastigauge my journals because didn't see a reason. Inserted the ACL bearings and the results were the photos you see after running the engine for possibly 5 minutes. I removed the crank, re-polished the journals, threw another set of cheaper bearings and the rest is history as the engine now has around 2600miles on it and sees as much as 28psi of boost on occasions. I still have another set of them that I may give a try on another build, but that first bunch wasn't too happy in my engine. Don't base your choices off my builds, do whatever you like. Maybe I'm just a bad builder, maybe the product was defective, maybe both are at fault or just maybe shyt happens.Spawn_CA18 wrote:are you saying all of them were caused by non-proper crank and bearing oil clerances or wrong calculating or machinist fault?