boost EGT on a KAD

Not making any inferences to your post Simon, but I personally feel that people are being scared into purchasing products they neither need or really want and adding more things to go wrong.

In many cases people look, hear, and feel their engines and learn to use their judgements under differing conditions and if they see their EGT rise they fear another engine issue which really isn't there and as most engines are designed to operate with raised EGT's outside their normal working range for long periods, when manufacturers specify AVERAGE working EGT's for an engine. In reality an engine in a lorry may run up a long hill with excessively raised EGT's for about 10 minutes and as they level out they will be lower than the average EGT's over the last hour; similarly, in a marine or industrial environment the same base engine may be running under an excessive load for intermittent periods due to heavy seas and varying tidal flows or undercurrents and it is still below the average EGT.
 
Assassin, tnx, yes that is def a concern
Average EGT is a good concept, avoiding the highs MAY be worth doing
VP have not included an EGT in the KAD with a leg
that's why i am posting here, getting some opinions / insight

it's obviously a follow up from my prop Q, getting opinions all over the place from my KAD will implode to it will be fine
as far as i can see the only way to figure this is to
1) get more data from the engine
2) change the prop back down - how much, this will be a bit of a guess, or
3) just move on don't get too anal about it all :)
 
simonfraser said:
Assassin, tnx, yes that is def a concern
Average EGT is a good concept, avoiding the highs MAY be worth doing
VP have not included an EGT in the KAD with a leg
that's why i am posting here, getting some opinions / insight

it's obviously a follow up from my prop Q, getting opinions all over the place from my KAD will implode to it will be fine
as far as i can see the only way to figure this is to
1) get more data from the engine
2) change the prop back down - how much, this will be a bit of a guess, or
3) just move on don't get too anal about it all :)
Click to expand...

Simon, what prop was fitted to your boat when it came out of the factory? Most production boats will have had the prop size calculated and tested and I am always a bit skeptical when people start messing around with these things.
 
I've read your other post re props and it looks like you are overpropped. Trying to comfort yourself that being overpropped is ok by measuring egt is in my opinion risky. Yes high egt is a symptom of overloading however any discrepancy in your gauge could lull you into a false sense of security. Egt sensors are best used as a warning that your egts have changed once you have a reliable baseline.
Fix your prop problem as you've been advised on your other thread then you know your good
 
Beamishken said:
I've read your other post re props and it looks like you are overpropped. Trying to comfort yourself that being overpropped is ok by measuring egt is in my opinion risky. Yes high egt is a symptom of overloading however any discrepancy in your gauge could lull you into a false sense of security. Egt sensors are best used as a warning that your egts have changed once you have a reliable baseline.
Fix your prop problem as you've been advised on your other thread then you know your good
Click to expand...

+1000!
 
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