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bf 225 emT ebt sensors temp

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alon1996

New member
hi, i have new Honda bf 225 . have 400 work hr. when working at 5000 rpm it shows at my Garmin monitor 105 c' deg,
i checked with the d'r H and i received this temp's
EMT sensor 1 : 52 c deg.
EMT sensor 2 : 58 c deg .
EBT sensor : 109 c deg .

I WANT TO KNOW IF THOSE ARE THE NORMAL TEMP. FOR 5000 RPM .AND AND THE MEANING OF 109 C DEG
THANKS
 
The 52 c and 58 c seem too low. They should be about 71 c (160 degrees F.) For some strange reason on the 225 the starboard side seems to run cooler than the port side above about 2000 rpm. I don't know the spec on the EBT and I don't have my shop manual available at the moment.
 
my big worry is the ebt sensor, it's temp should be like emt sensor ? . water at 109 c deg seems to be boiled ?
i have no overheat alarm and looks fine .
 
EBT is Engine Block Temp, this sensor fixed in the middle of "V" between both cylinder bank, this area no water passage,its just a metal block.i have seen same temp on BF 250. so i think it is normal, Both the EMT temp also normal,after opened thermostat its stay that much C'. i will try to post one of Dr.H report.


wajira
 
Its very difficult to get data and post here .but i got some screen shots on Ms Excel page,it is thousand of numbers. New Bitmap Image.jpg hope it clear. this is BF 250 Dr.H run time date , EBT sensor data shows 105 C'.

wajira
 
I have two BF250s. 250 hours. run in florida with water temp 70F-80F
At idle Temp gauges show 140F.-160F At 4800 RPM I see 190F-200F. Never over 200F.
Data is displayed on a Simrad MFD, so electronic gauge display.
Both engines show identical engine temp readings through the range of RPMs.
 
A couple threads before this one the same subject came up, According to a poster he said honda says 85C is normal which translates to 113-114F,way to hot for my liking, This was at 4800-5000rpm
 
OK, just to be clear. On the 200 and 225 the EMT temp should be 160 F +/-. This is regardless of the outside water temperature and regardless of RPM's. The thermostats control that.

As I pointed out before, at higher RPM's, for some strange reason on my 225 the starboard side seems to run cooler (145 - 150 F) than the port side above about 2000 rpm. Test temps have been verified by an IR heat gun and with the external analog temp senders I have mounted on the manifolds. I believe this has to do with how the cooling water initially enters the heads.

At this point I cannot comment on the expected temp on the EBT sensor, since I don't have my Helm manual with me. However, 109 C (228 F) seems a bit high to me, also.
 
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