Manley Billet 100mm crank - Cracked
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Pal215 (Aug 10, 2018)
Jul 9, 2018, 11:03 PM
#169
EvoM Guru
iTrader: (1)
That looks like OEM style oiling. Is there a hole on both sides of the rod Journal? And threaded plugs on one side of the web? That's how the eagle forged cranks are..
Jul 10, 2018, 12:25 AM
#171
I thought all cranks has holes on both side of journal. K1 does. You guys with the Manley billet cranks, I thought one of #4 rod journal oil ports was installed backwards. I thought I saw both teardrops facing each other instead of in same direction.
Jul 10, 2018, 02:25 PM
#172
EvoM Guru
iTrader: (1)
What meant does the hole go "through" the rod journal?
Jul 15, 2018, 10:34 AM
#175
Evolved Member
there are two methods of drilling a crank oil passage..
the stock crank has such holes that go trough the journal and those are connected to the main bearing with a hole that goes from the outside of the big end right into the middle of the main journal. This means that you ahve to cap that hole on the outside of the big end and leaves more room for dirt to gather inside the oil holes..
The other method is straight shot oiling and there you have these holes that go directly from the big end journal right down to the main bearing journal. As a consequence of the angles involved you get oval holes on the big end which seem to be a stress point. It was long been considered that the straight shot oiling was better, but as we see, if it is not done correctly you get stress raisers..
the stock crank has such holes that go trough the journal and those are connected to the main bearing with a hole that goes from the outside of the big end right into the middle of the main journal. This means that you ahve to cap that hole on the outside of the big end and leaves more room for dirt to gather inside the oil holes..
The other method is straight shot oiling and there you have these holes that go directly from the big end journal right down to the main bearing journal. As a consequence of the angles involved you get oval holes on the big end which seem to be a stress point. It was long been considered that the straight shot oiling was better, but as we see, if it is not done correctly you get stress raisers..
Jul 15, 2018, 10:52 AM
#176
there are two methods of drilling a crank oil passage..
the stock crank has such holes that go trough the journal and those are connected to the main bearing with a hole that goes from the outside of the big end right into the middle of the main journal. This means that you ahve to cap that hole on the outside of the big end and leaves more room for dirt to gather inside the oil holes..
The other method is straight shot oiling and there you have these holes that go directly from the big end journal right down to the main bearing journal. As a consequence of the angles involved you get oval holes on the big end which seem to be a stress point. It was long been considered that the straight shot oiling was better, but as we see, if it is not done correctly you get stress raisers..
the stock crank has such holes that go trough the journal and those are connected to the main bearing with a hole that goes from the outside of the big end right into the middle of the main journal. This means that you ahve to cap that hole on the outside of the big end and leaves more room for dirt to gather inside the oil holes..
The other method is straight shot oiling and there you have these holes that go directly from the big end journal right down to the main bearing journal. As a consequence of the angles involved you get oval holes on the big end which seem to be a stress point. It was long been considered that the straight shot oiling was better, but as we see, if it is not done correctly you get stress raisers..
Jul 15, 2018, 12:11 PM
#177
EvoM Guru
iTrader: (1)
Originally Posted by 2006EvoIXer
What do you mean cap? We need to plug a port?
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2006EvoIXer (Jul 15, 2018)
Jul 15, 2018, 01:21 PM
#178
Evolved Member
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2006EvoIXer (Jul 15, 2018)
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Kevin Troy (Aug 10, 2018)