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Engine Gurus...

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Royalratch
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Engine Gurus...

#1 PostAuthor: Royalratch » Fri Jan 16, 2015 4:31 pm

Quick question.

1) How hot would the oil get in a air-cooled Z750? With an 810cc kit in it.

2) If I wanted to position an temp sensor somewhere in the engine is there a place I could use without drilling? The sensor is about 5mm in diameter.

I was thinking to modify the oil filler cap but thats nowhere near the true operating temperature of the engine.

Cheers dudes!
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PAULJAC47
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#2 PostAuthor: PAULJAC47 » Fri Jan 16, 2015 5:13 pm

Hi Ratch just installing some KOSO gauges which have a temp function if you are just looking to measure engine temp they use a piece of metal drilled for one of the sparkplugs to go through and clamp to the head it has a piece of tube for the sensor to go in,should be easy to make one,not sure what function going to use mine for yet oil/air/engine temp..Paul J
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#3 PostAuthor: jimmock » Fri Jan 16, 2015 5:33 pm

Now this is my kinda thread!!
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#4 PostAuthor: sid123 » Fri Jan 16, 2015 5:37 pm

what is the sensor like ? is it threaded like a typical coolant sensor ?
whoosh im gone
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#5 PostAuthor: Royalratch » Fri Jan 16, 2015 10:40 pm

Thanks for reply guys.

The sensor is linked to a Bluetooth transmitter that can send oil temps to my phone. It's more a bit of fun tech geekery but it's not threaded. It would have to be press fit into something made to work.

Is the oil filler cap a bad location?

And would engine oil exceed 150C?

Anywhere else?
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#6 PostAuthor: Royalratch » Fri Jan 16, 2015 10:54 pm

PAULJAC47 wrote:Hi Ratch just installing some KOSO gauges which have a temp function if you are just looking to measure engine temp they use a piece of metal drilled for one of the sparkplugs to go through and clamp to the head it has a piece of tube for the sensor to go in,should be easy to make one,not sure what function going to use mine for yet oil/air/engine temp..Paul J


So it replaces a spark plug? Or shares a plug hole?

:?:
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#7 PostAuthor: z1bman » Fri Jan 16, 2015 10:58 pm

you could use the oil gallery plug below the points/ pulsing coil cover but be carefull not to obstruct the oil flow to the head. you would need to drill the plug to take the sensor & if it don't work you can still buy the plug from kawasaki part no 92066-057 £2.96 from kawasaki dealer
Last edited by z1bman on Fri Jan 16, 2015 11:07 pm, edited 1 time in total.
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#8 PostAuthor: Royalratch » Fri Jan 16, 2015 11:04 pm

Sounds like a plan. Cheers dude! Will have a look.
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#9 PostAuthor: PAULJAC47 » Sat Jan 17, 2015 10:10 am

Royalratch wrote:
PAULJAC47 wrote:Hi Ratch just installing some KOSO gauges which have a temp function if you are just looking to measure engine temp they use a piece of metal drilled for one of the sparkplugs to go through and clamp to the head it has a piece of tube for the sensor to go in,should be easy to make one,not sure what function going to use mine for yet oil/air/engine temp..Paul J


So it replaces a spark plug? Or shares a plug hole?

:?:


Shares the plug hole ,just uses the plug to clamp the bracket to the head.
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#10 PostAuthor: Royalratch » Sat Jan 17, 2015 10:12 am

So the sensor is not mounted inside the engine? Takes a reading from the metal...?
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#11 PostAuthor: ruffle » Sat Jan 17, 2015 10:18 am

GPz1100 Unitraks have a temperature sensor screwed into the rear of the cylinder head. I've read on the Microsquirt fuel injection pages that's the best way to do it rather than taking oil temperature.

Not saying you need to bolt it in just that's probably the best location to use.
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#12 PostAuthor: PAULJAC47 » Sat Jan 17, 2015 10:24 am

Royalratch wrote:So the sensor is not mounted inside the engine? Takes a reading from the metal...?


Yes works by conduction
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#13 PostAuthor: Crofty » Sat Jan 17, 2015 10:25 am

GPZ750 unitrack have a sensor in the sump that measures oil level, you could use that hole and it would be direct into the oil in the sump and not under pressure, but would have to run an oil cooler. IIRC you are not running a cooler.
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#14 PostAuthor: Ginger Bear » Sat Jan 17, 2015 10:56 am

Ratch,

An oil temp sensor needs to be in the oil flow for best results. Here's a pic of mine fitted into the oil gallery behind the block. Not the same motor I know, but gives an idea.

Image

I found having an oil temp sensor extremely useful/worrying. :?? sat in traffic in warm weather it would get up to just over 100 degrees C. :grr

Once moving again, the temp would quickly drop, proving how useful the oil cooler was.

I also think if your oil got to 150 degrees C you'd be in trouble. :boom :boom :boom
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#15 PostAuthor: Crofty » Sat Jan 17, 2015 1:04 pm

Ratch, is the lower part of your engine still a 650? Where are you running the oil pressure light from? 650 is under points cover, 750 has this blocked off.

I don't know where the GPZ750 takes its oil pressure from, if you were using the 750 bottom end maybe you could take it off there.

Any photos of the sensor?
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