72cc Pollini Big Bore Max Operating Temperature

billsykills · Post by **billsykills** » Thu Jul 17, 2008 9:09 pm

I have a 96 Elite S with a recently installed 72cc Pollini Big Bore Kit (not the corsa). I have broken it in and am now trying to tune it properly.

What is the normal operating temperature for the head and what is the maximum temperature I should avoid to prevent seizing the engine?

I would appreciate any help I can get, I am new to scooter tuning!

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Jul 17, 2008 10:24 pm

300 *F sounds right.

cf_z · Post by **cf_z** » Thu Jul 17, 2008 11:03 pm

im gonna need to know this too.

how do you check the temp? do you have to buy a gauge.. if so what type. because most temp gauges use a coolant sensor. and were air cooled haha.

also is there a page that explains how to properly break in a new big bore (corsa) kit?

justinnielsen01 · Post by **justinnielsen01** » Thu Jul 17, 2008 11:15 pm

you could just buy a laser temp guage that you have to point at it. is would be easiest

tru72 · Post by **tru72** » Fri Jul 18, 2008 12:44 am

not more than 400 max, your pushing the limits of good taste are that temp.. amything above 350 is pretty hot already

burnt_toast · Post by **burnt_toast** » Fri Jul 18, 2008 1:00 am

300-350F op temp on Corsa, contessa should be similar if not slightly cooler

westach temp sensor is best, made for small aircraft and reeds up to 600+F and has sparkplug sender reader

GN Racer · Post by **GN Racer** » Fri Jul 18, 2008 4:40 am

Since I'm not going for any speed records, 350 degrees is the max I'll go.

justinnielsen01 · Post by **justinnielsen01** » Fri Jul 18, 2008 9:06 am

burnt_toast wrote:300-350F op temp on Corsa, contessa should be similar if not slightly cooler

westach temp sensor is best, made for small aircraft and reeds up to 600+F and has sparkplug sender reader

whats the diffrence between the two corsa and contessa ?

burnt_toast · Post by **burnt_toast** » Fri Jul 18, 2008 10:47 am

justinnielsen01 wrote:
burnt_toast wrote:300-350F op temp on Corsa, contessa should be similar if not slightly cooler

westach temp sensor is best, made for small aircraft and reeds up to 600+F and has sparkplug sender reader
whats the diffrence between the two corsa and contessa ?

Corsa=ported from factory, better flow design

contessa=porting mostly untouched, just basic cyl w/ bigger bore piston

justinnielsen01 · Post by **justinnielsen01** » Fri Jul 18, 2008 10:58 am

oh. what does that do for you performance wise?

Kenny_McCormic · Post by **Kenny_McCormic** » Fri Jul 18, 2008 12:32 pm

Corsa is faster, higher power, and higher revving.

Dac · Post by **Dac** » Fri Jul 18, 2008 12:41 pm

contessa is longer lasting.
and still has more power then most other 72cc bore kits.

burnt_toast · Post by **burnt_toast** » Fri Jul 18, 2008 1:22 pm

Dac wrote:contessa is longer lasting.
and still has more power then most other 72cc bore kits.

longer lasting depends on tuner's capabilities

happyman · Post by **happyman** » Sat Jul 19, 2008 10:46 pm

i have a couple of motors running the westach temp gauges i know i am jetted rich, the the motor heads over 350 very fast for whatever reson. i think the sensor is not good.. i have just the part that goes over the plug for a spre and i will change it out one day soon.. ya never know how far off these things are,, Keoni says they can be off quite a bit. i would like something i could trust for actual temp.. i have one also on the smaller buiold and its a much more steady reading. i think like 20% off, and at 350 that is a lot.mine will cross 400 very easy and i have looked in the exhaust port andits looking good. a nd side to side and shows no blow by on the rings. still runs very good so i think if the guage was right it would show up as scuffing at least. still bothers me to see the temp go up like that. and so easy on just mild running at say 40 to 45 mph

burnt_toast wrote:300-350F op temp on Corsa, contessa should be similar if not slightly cooler

westach temp sensor is best, made for small aircraft and reeds up to 600+F and has sparkplug sender reader

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Jul 19, 2008 10:52 pm

happyman wrote:i have a couple of motors running the westach temp gauges i know i am jetted rich, the the motor heads over 350 very fast for whatever reson. i think the sensor is not good.. i have just the part that goes over the plug for a spre and i will change it out one day soon.. ya never know how far off these things are,, Keoni says they can be off quite a bit. i would like something i could trust for actual temp.. i have one also on the smaller buiold and its a much more steady reading. i think like 20% off, and at 350 that is a lot.mine will cross 400 very easy and i have looked in the exhaust port andits looking good. a nd side to side and shows no blow by on the rings. still runs very good so i think if the guage was right it would show up as scuffing at least. still bothers me to see the temp go up like that. and so easy on just mild running at say 40 to 45 mph

burnt_toast wrote:300-350F op temp on Corsa, contessa should be similar if not slightly cooler

westach temp sensor is best, made for small aircraft and reeds up to 600+F and has sparkplug sender reader

Try a richer pilot.