Trail Tech Temperature on Norton plugs 14mm

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p400

p400

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Anyone using Trail Tech temperature readout on a Norton twin?
Maybe even a pair to keep an eye on both cylinders?

I have run one on a 500cc single for years and find it a comfort to see a repeatable temp range (285F-325F) or an increase alerting mixture issues.

I installed a Trail Tech on a Norton 750 recently and am getting temps of 350-408F on a 94F day.
Seems high, but what do Trail Tech users normally see?



Trail Tech Temperature on Norton plugs 14mm
 
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I have a temp sensor on a multimeter. Always looked at the plug to see if it was running hot. The sensor is good at checking temp differences for tuning or analytical purposes. No idea what if any would be ideal running temp.
 
I was wanting to know if any Norton twin owner was currently running TrailTech temp , as it seems so helpful in determining engine tune and normal run conditions for future troubleshooting.

I am just running one 14mm sensor under my right spark plug, so just one cylinder. As I have a couple of these TrailTech not in service, I think I will add a left cylinder sensor and readout.

Trail Tech Temperature on Norton plugs 14mm
 
I dont use them all the time when racing just for testing after a motor rebulid or refresh.
Regards Mike
 
Yes, that 350* to 408* sounds too hot raising the question of how hot the oil is when it drains down your push rod tunnels.

It wonder if there is an oil system mod that safely/effectively boosts the volume of cooling oil flowing through the head. Our big external oil tanks are a blessing than could be leveraged.
 
My question would be how much oil is needed to actually do useful cooling and whether or not the oil can get to the hot
spots it needs to.
It may be a lot of oil . There are Honda dirt bikes that have a pump (section) that only feeds the head.
 
xbacksideslider said:
Yes, that 350* to 408* sounds too hot raising the question of how hot the oil is when it drains down your push rod tunnels.

It wonder if there is an oil system mod that safely/effectively boosts the volume of cooling oil flowing through the head. Our big external oil tanks are a blessing than could be leveraged.
Click to expand...
I think i remember comoz did this on one of his race bikes?
Extra finning welded to the fins and an oil pump pumping oil through the head to take some heat away??
Maybe do a search on the subject
 
So no one has Trail Tech TTO spark plug temp data to share? Triumph twin? any vertical twin?
Two parallel cylinders have got to running a pretty high plug/head temp compared to a single or V twin.

Appears my Trail Tech Vapor unit stores the maximum temp of the last ride and mine shows 407F.
This Vapor unit temp digits are quite small, and I am not happy about trying to read 1/8 digits on a ride.

I am ordering the stand alone TTO temp unit with 3/8" digit readouts for future use.
The 14mm copper sensor end needs some thought out bending to fit the Norton spark plug recess.
 
baz said:
I think i remember comoz did this on one of his race bikes?
Extra finning welded to the fins and an oil pump pumping oil through the head to take some heat away??
Maybe do a search on the subject
Click to expand...

Pretty simple I guess, a 12 volt pump switched by a thermocouple, tapped into oil tank and delivering to the exhaust side of head; maybe a problem flooding push rod tunnels.

For example, PDF attached, a 3 phase 12 volt pump; I used a similar one in a turbo intercooler project, very efficient, low load, high volume/low PSI, quiet, good for petroleum distillates but only to 212*F which might be marginal at the oil tank.

Also attached, the instruction sheet for an adjustable thermocouple, I used this too but with a 1/8 NPT compression fitting probe instead of the pictured capillary tube wire.

A solution in search of a problem? Or, a way to buy longer oil life by reducing local high temp exposure?
 

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Perhaps it was hobot who noted that using oil for cooling could seriously cook the oil. There are hot spot areas on the head I think Jim
has noted this.
 
I have a 1952 500cc single air cooled street bike with a Trail Tech TTO 14mm plug temp and it shows 317F for max recorded temp on the last ride. I don't recall ambient temp, but probably 80F.
This is actual data for reference.
Same bike with a Trail Tech TTO in the oil tank shows a max oil temp of 120F.


Trail Tech Temperature on Norton plugs 14mm
 
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