Author Topic: 1983 Nighthawk 650 Oil Cooler and Adapter is a No-Go  (Read 404 times)

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Offline pekingduck

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1983 Nighthawk 650 Oil Cooler and Adapter is a No-Go
« on: June 04, 2024, 03:28:46 PM »
I've run across some threads on this and other forums suggesting the very inexpensive and compact oil cooler adaptor from the DOHC model could be used on our CB500-550-650-750s.
I found that the adaptor plate, while using the same o-ring and 20mm diameter oil filter bolt, will not physically fit without some machining, and rotating it 180 degrees so the inlet/outlet ports point down 45 degrees. It can be done, but a wormhole maybe best not pursued.

Any source for inexpensive oil filter adaptors?

Offline grcamna2

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Re: 1983 Nighthawk 650 Oil Cooler and Adapter is a No-Go
« Reply #1 on: June 04, 2024, 10:05:15 PM »
I've run across some threads on this and other forums suggesting the very inexpensive and compact oil cooler adaptor from the DOHC model could be used on our CB500-550-650-750s.
I found that the adaptor plate, while using the same o-ring and 20mm diameter oil filter bolt, will not physically fit without some machining, and rotating it 180 degrees so the inlet/outlet ports point down 45 degrees. It can be done, but a wormhole maybe best not pursued.

Any source for inexpensive oil filter adaptors?

'Terry from Australia' member here will know;send him a PM.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline pekingduck

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Re: 1983 Nighthawk 650 Oil Cooler and Adapter is a No-Go
« Reply #2 on: June 06, 2024, 10:25:51 AM »
Thanks.  I should have put this in this forum, which has lots of info.

http://forums.sohc4.net/index.php/topic,166.0.html

Offline Nicklopic

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Re: 1983 Nighthawk 650 Oil Cooler and Adapter is a No-Go
« Reply #3 on: June 06, 2024, 10:28:46 AM »
TTR400 from 4into1
Rippe rock racers also makes an adapter but it takes a spin on filter
forums.sohc4.net/index.php/topic,195055.msg2286430.html#msg2286430
80' CB650
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