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06-08-2018, 12:37 AM | #45 | ||||
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06-08-2018, 12:56 AM | #46 | |
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Cheers Ps. And yes same here, they are "dirt cheap" compared to some of the other. Spending the money on ARP bolts that on the other hand are 3x OEM. |
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06-08-2018, 09:11 AM | #48 |
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I'd still go with BE/ARP bolts. Even if you don't want to submit to the evidence of bore distortion potential using OEM bolts, the convenient installation process of ARP bolts over OEM is more than worth the extra price.
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06-08-2018, 05:36 PM | #50 | |
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I don't understand why some BMW guys cringe when we start exploring other options other than your typical OEM or the one other brand that is a "no brianer". Come on now. It's clearly listed on the BE website, that one of the main issues with OEM bearings are the clearance issue. So if Acl bearings (race version) have the same clearance as the BE ones, why shouldn't Acl be considered a good option. Especially if we can buy Acl ones got $200.00 and BE costs $500.00! I just believe we should encourage the community to have more options so things become more affordable. I still don't like the idea that we only have pretty much option for Rod Bolts. I wish someone on this forum can manufacture a new bolt with the same specs as ARP ones and sell them for cheaper. |
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06-08-2018, 06:34 PM | #51 |
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I don't think anyone is saying you shouldn't use ACL. I've used them in a number of engines. I've been using their .25 oversize bearings for a while as they're the only oversize bearing I know of for machined cranks. However, there is no doubt that many people including shops are not willing to think outside the box for this engine. They're just now warming up to BE. Throwing a "new" option out there is just going to blow people's mind.
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06-08-2018, 07:13 PM | #52 | |
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Thanks deansbimmer for answering my questions via pm. Your feedback really helped! |
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06-09-2018, 08:13 PM | #53 |
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Official ACL bearing measurements should be here this weekend. Bert sent me a picture showing he's measuring them: thicknesses, clearances, and eccentricity. He said same way he does for all the bearings.
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06-10-2018, 12:30 AM | #54 |
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Ha I ordered a set anyway, mechanic insisted on OEM bolts, oh well he is responsible to install them anyway... and car is booked on a few weeks time... If Green eggs comes back with something that strongly suggests not to, then I can call it off still.
Keen to see results; isn't "Bert" the BE bearings rep? If so will results be completely unbiased? |
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06-10-2018, 03:21 AM | #55 | |
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06-10-2018, 05:24 AM | #56 |
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In my mind not a second doubt that BEs shells are great, both design and from what I understand they measure/select to spec prior shipment. And even without being an engine guy one have to be impressed by their released design/measurements data, wow. Still as deliveries are unpredictable and on top the price is juicy I view (hope for) ACL as a fair alternative. Regarding BE price and lead time I certainly appreciate the challenge when ordering small volumes, after collecting enought backlog (as they obviously can't run their own fab).
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06-10-2018, 08:52 PM | #58 | ||
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http://www.m3post.com/forums/showthread.php?t=1504908 |
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06-10-2018, 10:25 PM | #59 |
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I never cease to be amazed at the way people complicate their lives looking for additional options
One company makes oversize bearings and has published enough information about them to fill an encyclopedia. Another company is managed by clowns (vac) Now there is a third option Options 2 and 3 publish either zero or almost zero information. So let me see, one option has tons of info and specs and there are another two with almost zero information... such a tough choice... let me think about it... |
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06-11-2018, 03:57 AM | #60 | |
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06-11-2018, 07:47 AM | #61 | |
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Have they completed testing to see what effect it has on oil pressures and flow in the S65 engine? Why did they choose that clearance for the engine? Why doesn't it have a coating? This looks like Clevite decides to build an increased clearance bearing for our engine directly without any more info. Off the bat I'm more inclined to take this as a #2 option (in front of VAC of course) but I need a lot more information before I consider them the ideal option |
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07-12-2018, 05:53 AM | #62 |
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So for those who had replaced their rod bearings with ACL - any feedback?
Obviously HX is the one to go for with 0.025mm clearance but how different is that vs the H 0.025 (not STD)? Are they both not the same in terms of clearance measurement? |
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07-12-2018, 08:02 AM | #63 | |
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The HX-STD is the "extra clearance" set (.001 per journal inch) The H-.25 is the oversize set Don't confuse extra clearance with oversize. In this context oversize means the shells are thicker to compensate for repaired crankshafts that have had their journals ground down. I've installed 7 or 8 sets of ACL bearings in engines so far because of BE's inconsistent supply. No issues. |
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07-12-2018, 08:18 AM | #64 | |
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07-12-2018, 08:21 AM | #65 |
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I've used both but would probably lean towards sticking with the std size shells unless you bought the std and hx sets and made a custom upper/lower set..
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07-12-2018, 09:05 AM | #66 |
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Thanks mate. Did you check HX clearance with plastigage by any chance, or leaning towards STD based on gut feeling?
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