Engine bearings
05-19-2016, 09:23 PM
#41
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I'll tell you in the morning what my machinist wants for it.
He left me a message today recommending a turn.
I have a spare, so I will probably use that to avoid ruining the hardening as guttedmiata mentioned, but I'll ask anyway.
He left me a message today recommending a turn.
I have a spare, so I will probably use that to avoid ruining the hardening as guttedmiata mentioned, but I'll ask anyway.
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05-20-2016, 05:17 PM
#46
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Location: Anacortes, WA
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ACL Race I know work flawlessly for High HP and RPM.
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05-20-2016, 10:51 PM
#47
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I'm 100% with Bob on this.
I'd say he and I have abused bearings as much or more than anyone...and I don't think either one of us would put anything other than ACLs in our motors if given the choice.
I would recommend spending the extra few bucks and send them to Calico to be coated.
I'd say he and I have abused bearings as much or more than anyone...and I don't think either one of us would put anything other than ACLs in our motors if given the choice.
I would recommend spending the extra few bucks and send them to Calico to be coated.
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02-04-2018, 02:17 PM
#48
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Join Date: Jul 2016
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maybe a stupid post (once again) and in wrong topic, but is that standard that the middle (3rd) main journal on the crank does not have an oil port hole ? It is out of a BPZE block.
and other question, I have the crank main and pin journals measured and it comes out as follow:
main:
1 - 49.934
2 - 49.935
3 - 49.932
4 - 49.934
5 - 49.938
All of which except nr. 5 is out of range by a very little, I believe bottom limit for BPZE is 49.938. Should I be worried about this little difference ? I guess a little extra room for thick oil is only a good thing with 8500RPM screamer isnīt it ? I am looking for about 0.045mm oil clearance for main bearings and 0.054mm for rod bearing
Also pins diameter:
1 - 44.935
2 - 44.933
3 - 44.933
4 - 44.938
limit there should be 44.940 and again I am under that by a hair. I plan to use King XP series bearings.
and other question, I have the crank main and pin journals measured and it comes out as follow:
main:
1 - 49.934
2 - 49.935
3 - 49.932
4 - 49.934
5 - 49.938
All of which except nr. 5 is out of range by a very little, I believe bottom limit for BPZE is 49.938. Should I be worried about this little difference ? I guess a little extra room for thick oil is only a good thing with 8500RPM screamer isnīt it ? I am looking for about 0.045mm oil clearance for main bearings and 0.054mm for rod bearing
Also pins diameter:
1 - 44.935
2 - 44.933
3 - 44.933
4 - 44.938
limit there should be 44.940 and again I am under that by a hair. I plan to use King XP series bearings.
Last edited by AndrewG; 02-04-2018 at 03:11 PM.
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