"Chuck" wrote in message
news:5TSck.244293$yE1.55866@attbi_s21...
I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
I think my plugs look too "wet" much like the third one shown in the photo
on the NGK website.
http://www.ngksparkplugs.com/techinf...200&country=US

Although the motor runs pretty smoothly. I running with a 130 degree
thermostat. What should I look at adjusting?

Chuck
Doesn't anybody want to know what the problem turned out to be?

scroll down................


down more..............................


Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of
July I had 14 people on it and THAT was the reason it felt so sluggish and
caused me to check the plugs, which is when I noticed they were "wet." When
I have a few people on the boat it cruises easily at twenty knots.
Yeah.... don't anybody say it......... go ahead..........

On Mon, 11 Aug 2008 02:10:55 GMT, "Chuck" wrote:


"Chuck" wrote in message
news:5TSck.244293$yE1.55866@attbi_s21...
I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
I think my plugs look too "wet" much like the third one shown in the photo
on the NGK website.
http://www.ngksparkplugs.com/techinf...200&country=US

Although the motor runs pretty smoothly. I running with a 130 degree
thermostat. What should I look at adjusting?

Chuck
Doesn't anybody want to know what the problem turned out to be?

scroll down................


down more..............................


Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of
July I had 14 people on it and THAT was the reason it felt so sluggish and
caused me to check the plugs, which is when I noticed they were "wet." When
I have a few people on the boat it cruises easily at twenty knots.
Yeah.... don't anybody say it......... go ahead..........


Ah well: live and learn.... matching prop pitch to desired cruise
speed is almost a black-art....

Brian W

On 2008-08-10 22:10:55 -0400, "Chuck" said:

"Chuck" wrote in message
news:5TSck.244293$yE1.55866@attbi_s21...
I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10
plugs. I think my plugs look too "wet" much like the third one shown in
the photo on the NGK website.
http://www.ngksparkplugs.com/techinf...200&country=US

Although

the motor runs pretty smoothly. I running with a 130 degree
thermostat. What should I look at adjusting?

Chuck
Doesn't anybody want to know what the problem turned out to be?

scroll down................


down more..............................


Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth
of July I had 14 people on it and THAT was the reason it felt so
sluggish and caused me to check the plugs, which is when I noticed they
were "wet." When I have a few people on the boat it cruises easily at
twenty knots. Yeah.... don't anybody say it......... go ahead..........

I won't, but thanks for the chuckle.

--
Jere Lull
Xan-à-Deux -- Tanzer 28 #4 out of Tolchester, MD
Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/

Many engines are normally 'overfueled' so that the combustion chambers
get some affect of cooling by the excess fuel flow through. Also if
you were running with a heavy load and were thus 'lugging' the engine
(not able to reach full rpm) youll also get some wetness on the walls,
piston tops, etc. due to the unburned fuel because the engine isnt
running a 'top efficiency'.

On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott
wrote:

matching prop pitch to desired cruise
speed is almost a black-art....

I though you gave it enough pitch just reach maximum rated RPM at WOT.

Casady

On 2008-08-12 19:18:41 -0400, (Richard
Casady) said:

On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott
wrote:

matching prop pitch to desired cruise speed is almost a black-art....

I though you gave it enough pitch just reach maximum rated RPM at WOT.

AT the speed WOT can give with the engine, prop, weight, drag ...

I had a powerboat friend that switched props depending on whether they
were skiing or traveling.

--
Jere Lull
Xan-à-Deux -- Tanzer 28 #4 out of Tolchester, MD
Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/

On Tue, 12 Aug 2008 23:18:41 GMT, (Richard
Casady) wrote:

On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott
wrote:

matching prop pitch to desired cruise
speed is almost a black-art....

I though you gave it enough pitch just reach maximum rated RPM at WOT.

Casady

If you pitch a prop like this for a full laden boat - it can be dicey
with a light laden boat, don't you think?

Brian W

On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott
wrote:

On Tue, 12 Aug 2008 23:18:41 GMT, (Richard
Casady) wrote:

On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott
wrote:

matching prop pitch to desired cruise
speed is almost a black-art....

I though you gave it enough pitch just reach maximum rated RPM at WOT.

Casady

If you pitch a prop like this for a full laden boat - it can be dicey
with a light laden boat, don't you think?

Not really You can overrev the engine with a light load, but you dont
have too. Its just that WOT is not available with a very light load.

On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott
wrote:


If you pitch a prop like this for a full laden boat - it can be dicey
with a light laden boat, don't you think?

The engine will turn more revs than redline at WOT

Brian W

"Richard Casady" wrote in message
...
On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott
wrote:


If you pitch a prop like this for a full laden boat - it can be dicey
with a light laden boat, don't you think?

The engine will turn more revs than redline at WOT

Brian W


Pull back on the throttle.

Eisboch