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CX500 & CX650 Turbo Forum
Started by Doward at 04-03-2010 12:44 PM. Topic has 5 replies.
  
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 04-03-2010, 12:44 PM
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Doward
 
Joined on 05-11-2008
Alachua, FL
Posts 814
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Anyone here have access to a Turbo oil pump?
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If so, would you mind getting me some dimensions? Specifically the center of the drive sprocket to the center of the oil feed hole.
I'm trying to determine if there is a difference (aside from the sprocket) between the Turbo oil pump and normal oil pump.
1978 CX500 motor + 1980 CX500C frame
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04-03-2010, 3:35 PM
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Timothy_D
Joined on 04-22-2006
Santa Rosa, CA
Posts 1,585
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Re: Anyone here have access to a Turbo oil pump?
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Different enough that the CXT has its own part number. 15116-MC7-000
MC7 is turbo specific.
CX500 Turbo, GL650I, Two CX650E's, and one Crown Jewel of the CX line- CX650T.
Why do I own five CX/GL bikes? Ask an alcoholic why he drinks.
Donating Member.
Sold: 1981 CX500D, 2- 1982 CX500T's, 1983 CX650C.
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04-03-2010, 4:24 PM
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Doward
Joined on 05-11-2008
Alachua, FL
Posts 814
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Re: Anyone here have access to a Turbo oil pump?
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I show a 15100-415-000 for the standard oil pump and 15100-MC7-000 for the Turbo oil pump...
15116-MC7-000 seems to be the sprocket for the Turbo, according to Service Honda's remote desktop based PartsFiche.
I'm mainly trying to determine if the main body of the oil pump is any different than the standard. I see that the pickup is different.
1978 CX500 motor + 1980 CX500C frame
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04-04-2010, 1:23 PM
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Doward
Joined on 05-11-2008
Alachua, FL
Posts 814
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Re: Anyone here have access to a Turbo oil pump?
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Just ordered a turbo oil pump. I'll find out if there's any differences when it gets here.
1978 CX500 motor + 1980 CX500C frame
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04-07-2010, 11:07 PM
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Don in Oz
Joined on 03-10-2006
Melbourne, Australia
Posts 546
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Re: Anyone here have access to a Turbo oil pump?
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Doward, You will find that the oil pump sprocket - on the pump's shaft - is smaller in diameter than the standard oil pump sprocket (by at least two teeth), to get some of the increased oil delivery volume.
The other increase is due to the rotor being deeper.
This means that the normal oil-pump drive chain does NOT fit the turbo - the crankshaft sprocket is the same size as on the normal bike.
Don.
GL500I, CX500TC (2), CX500EC (2), 1982 CX500C.
GL1000, 1976 CB550F, CT110 (2), XL125S (2), 1973 CB175K6.
Kwaka Z250C1 (2).
Suzuki GS450SX, DR250SJ, GS125ESD.
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04-08-2010, 7:02 PM
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Doward
Joined on 05-11-2008
Alachua, FL
Posts 814
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Re: Anyone here have access to a Turbo oil pump?
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 Don in Oz wrote: | | Doward, You will find that the oil pump sprocket - on the pump's shaft - is smaller in diameter than the standard oil pump sprocket (by at least two teeth), to get some of the increased oil delivery volume.
The other increase is due to the rotor being deeper.
This means that the normal oil-pump drive chain does NOT fit the turbo - the crankshaft sprocket is the same size as on the normal bike. |
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Yep, the actual georotor housing is also larger - I've got pics!
That larger housing changes the offset of the oil output to the oil filter, unfortunately.
Also, the Turbo oil pickup from the screen is larger, and longer (most likely due to the turbo's having an actual oil pan? So ended up cutting and rewelding the turbo outlet to fit the normal CX500 casing 
One more note, the sprockets (Turbo vs Standard) ARE NOT interchangeable - the slots are the same width, but the Turbo slot is longer, so I've got to very carefully lengthen the slots tomorrow to get it to fit and still be concentric.
1978 CX500 motor + 1980 CX500C frame
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Honda CX500 & G... » CX500 GL500 Tra... » CX500 & CX650 T... » Re: Anyone here have access to a Turbo oil pump?
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