Oil Cooler Questions.

4TheKZ1000
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24 Jan 2013 22:03 #569063 by 4TheKZ1000

Oil Cooler Questions. was created by 4TheKZ1000

When I remover the oil pipe and add my oil cooler fittings to the upper case.....is there a output fitting and imput fitting.

Which fitting pumps the oil to the cooler and which one is the return line?

Its a pre-J engine.

Thanks.

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wireman
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The most interesting prick in the world

24 Jan 2013 22:11 #569067 by wireman

Replied by wireman on topic Oil Cooler Questions.

Take a look at omrs build post,hes got everything pretty well documented

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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Old Man Rock
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24 Jan 2013 22:18 - 24 Jan 2013 22:21 #569072 by Old Man Rock

Replied by Old Man Rock on topic Oil Cooler Questions.

Lower fitting (where oil switch fits into) off top of engine case is fed from oil pump down below.
This 3/8ths line will feed into either end of the oil cooler.

The return line from the other end of the cooler will go to the upper case fitting behind the cylinder (right side of rear engine, oil pressure screw tube)thus feeding oil back into the system being passed up into/through the rear cylinder studs up to the head.

One with thread for oil switch, mounts to top of engine case.

Definitely use new O-rings... As me how I learned this.... (See image) :ohmy: :laugh:

1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az

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Last edit: 24 Jan 2013 22:21 by Old Man Rock.

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4TheKZ1000
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24 Jan 2013 22:23 #569077 by 4TheKZ1000

Replied by 4TheKZ1000 on topic Oil Cooler Questions.

Thanks OMR......

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4TheKZ1000
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24 Jan 2013 22:40 #569081 by 4TheKZ1000

Replied by 4TheKZ1000 on topic Oil Cooler Questions.

I know that the pressure switch fitting is 1/4 inch NPT.

Looks like the other fitting has a bigger thread size......anyone know this size?

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Old Man Rock
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24 Jan 2013 22:47 #569084 by Old Man Rock

Replied by Old Man Rock on topic Oil Cooler Questions.

3/8ths line on both cooler feeds into barbed fittings.... Same....

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4TheKZ1000
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24 Jan 2013 22:49 #569087 by 4TheKZ1000

Replied by 4TheKZ1000 on topic Oil Cooler Questions.

Old Man Rock wrote: 3/8ths line on both cooler feeds into barbed fittings.... Same....

Im going to run AN fittings on mine....so need to remove barb fittings.

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pete greek1
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25 Jan 2013 15:54 #569226 by pete greek1

Replied by pete greek1 on topic Oil Cooler Questions.

OMR, do you have pics. of the best way to route the hoses, from cooler to fittings ?... Pete

1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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Old Man Rock
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25 Jan 2013 17:25 #569244 by Old Man Rock

Replied by Old Man Rock on topic Oil Cooler Questions.

Can't really say what's the BEST but for me the shortest route possible would be the best....

Under engine case seemed a PITA for oil changes and possible punctures not to mention added heat off exhaust.

Over engine also seemed a PITA due to heat on lines, kind of defeats the purpose of an oil cooler (to cool the oil down)....

Here's on my last build.