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ZX7/Z1 Oil Cooler 02 Dec 2015 13:16 #701599

  • SWest
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Zed 1015's comments were well taken. While watching and commenting on the other cooler thread, I've been quietly playing with mine.


The cooler was meant for a high pressure system. The hoses were 3/8. The fitting size was much smaller.



I cut the nipples off my old cooler, drilled and sweat soldered them to the couplings that came with it. The solder has a high tin content (no lead), so heat shouldn't be a problem. Just in case I flared the inside a little.


Being the lines were small with a O ring, the next step was to open the intakes more. .435"/ 11.08mm. The nipple ID is .434"/ 11.03mm.




There was a lot of meat there. Should work out pretty well.



Attachment 014-2.jpg not found






Now to run the lines. I'll prime the cooler before I put it into service.
More to come. B)
Steve
Z1b1000 1975 Z1b
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ZX7/Z1 Oil Cooler 02 Dec 2015 13:22 #701601

  • undiablo
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just use a harley old thermostat. I have one since 2013... no problems.
Plenty on ebay and pretty cheap.
Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires

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ZX7/Z1 Oil Cooler 02 Dec 2015 13:24 #701603

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Got a link? :)
Steve
Z1b1000 1975 Z1b
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ZX7/Z1 Oil Cooler 02 Dec 2015 14:17 #701615

  • redhawk4
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I've been watching this one on Ebay if it helps, kind of a name brand.

Derale 25719 Auto Trans Oil Cooler Thermostat
Completed
1978 KZ1000A2 Wiseco 1075 kit
1977 KZ650B1
1973 Triumph Tiger TR7V
1968 BSA Victor Special 441
2015 Triumph Thunderbird LT
1980 Suzuki SP400

Old enough to know better, still too young to care

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ZX7/Z1 Oil Cooler 03 Dec 2015 05:47 #701692

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Looks good. Squirted a little paint on it. It's purdy. I may have to get some 90* barb fittings for it so the lines won't be hanging out and I can tuck them under the cooler, along the back bone, then down to the fittings.
Steve

Z1b1000 1975 Z1b
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ZX7/Z1 Oil Cooler 10 Dec 2015 15:07 #702663

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Being the fittings on the cooler are 3/8" compression and I was able to open up the inlets to 1/2" 3/8" compression/ 1/2" barb don't exist not to mention 90*. So I had to make my own. Used a copper 90* street elbow, crimped the slip side with my flaring tool in a vice, cut a double barb fitting in half and soldered them together. Had to drill out the slag inside and they should work for now.


May look a little funky but they'll work.
Steve
Z1b1000 1975 Z1b
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ZX7/Z1 Oil Cooler 11 Dec 2015 15:04 #702758

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Well got them on. Had to make spacers to get the cooler away from the crash bar and let the clutch cable run where it needs to be. Used 3/8 fuel line and longer bolts. Nice and solid. Put some clear tubing on the inlets to keep dirt out while I get the rest of what I need.
Steve






Got some rain. Just enough to dirty up cars. Snow on the mountain though.



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ZX7/Z1 Oil Cooler 11 Dec 2015 17:59 #702781

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Are you planning to run the lines between headers 2&3, then under the engine?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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ZX7/Z1 Oil Cooler 11 Dec 2015 18:23 #702784

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No up and over the top along the back bones, then down between 2&3 carbs. The idea is for the oil to stay in the cooler.
Steve
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ZX7/Z1 Oil Cooler 11 Dec 2015 18:30 #702786

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Cool. Would it have been easier to flip the cooler so the lines enter from above?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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ZX7/Z1 Oil Cooler 11 Dec 2015 18:37 #702787

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That was the plan. Too big and I don't want the lines showing. :whistle:
Steve
Z1b1000 1975 Z1b
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ZX7/Z1 Oil Cooler 24 Dec 2015 17:56 #704257

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Got my fittings but I now have another problem. The fitting size is for a 3/8" line. Too small for the Z1/KZ's. They have to be 13mm/1/2". My old ones were.




I will have to drill and adapt a #8 A/C barb to barb splice cut in half pressed in so I won't have any restriction at the fittings.


The last thing I need is to restrict the oil going to the engine.
Not a happy camper but I suspected it. There's a Alternative Hose place on the way home. I'll pick one up there.
Steve
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
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