ACL Problems?
Long story short, had a motor built by a competent shop. They used half-shells to achieve the desired .002 clearance on the rods, not sure where mains were set. About 1500 miles later the engine failed, due to what we don't know. Tapping sounded like something in the head, but a few miles later rod bearing #1 was completely chewed apart. The others were fine. The mains were fine.
Now we are rebuilding the motor yet again (different shop), and finally after weeks of waiting I got my new ACL race bearings in hand. And of course after all the waiting, NOW I'm reading about problems with ACL bearings dating back to 2009 with their business troubles. I'm wondering if I should return these and go with another bearing just to be safe, as I am not going to do a rebuild #3. Even if the clearances all work out, I'm worried the bearings themselves are not of the quality that they used to be. I've also read a few threads online from other forums showing problems with ACL. I know nothing is perfect, and FM still swears by ACL brand bearings, but I am weary. What have you guys seen or heard or experienced? |
Here's a google search to help you out. Try searching harder next time. 1020 results...
https://www.google.com/search?q=site...+race+bearings |
Originally Posted by thenuge26
(Post 1061120)
Here's a google search to help you out. Try searching harder next time. 1020 results...
https://www.google.com/search?q=site...+race+bearings My question pertains to a specific concern, not where I can get them or what the alternatives are. Go be a smartass elsewhere |
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STFU
This is result #6 in that search https://www.miataturbo.net/engine-pe...s-world-58029/ This was post #2 in that post https://www.miataturbo.net/attachmen...ine=1381331627 Stop being a dumbass and search. Lets close the forum for DUPLICATE posts, new posts are fine. This isn't a new post. |
Good job with your reading comprehension. What you think he is asking is not what he is asking.
If stock bearings are often good for 300k miles, often in boosted applications, I don't see why they wouldn't be a viable option. |
Originally Posted by sixshooter
(Post 1061148)
Good job with your reading comprehension. What you think he is asking is not what he is asking.
If stock bearings are often good for 300k miles, often in boosted applications, I don't see why they wouldn't be a viable option. If I wanted a vendor's opinion, I already have FM's and wouldn't have asked. I'm asking about quality ISSUES of the bearings. Example being a guy on IWSTI having 2 of 3 batches of STD main bearings with inconsistent clearances, swapping in Clevites, and everything being in spec. Troll elsewhere. |
Measure everything.
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If the ACL's failed you, I'd try something else for my own sanity. ACLs should be good though.
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Originally Posted by Mazdaspeeder
(Post 1061149)
At least someone can read. Thanks for the feedback.
If I wanted a vendor's opinion, I already have FM's and wouldn't have asked. I'm asking about quality ISSUES of the bearings. Example being a guy on IWSTI having 2 of 3 batches of STD main bearings with inconsistent clearances, swapping in Clevites, and everything being in spec. Troll elsewhere. Here, my slightly modified search: https://www.google.com/search?q=site...rings+problems No results of people having problems with ACL bearings. You asked what I heard or experienced, and I gave it to you. Sorry I guess? |
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Originally Posted by thenuge26
(Post 1061156)
So return them? Why are you asking us if you've already made up your mind?
Here, my slightly modified search: https://www.google.com/search?q=site...rings+problems No results of people having problems with ACL bearings. You asked what I heard or experienced, and I gave it to you. Sorry I guess? ACL vs King (rod bearing) comparo - NASIOC |
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