Johno 110HP startup

[Splash]

THanks - What is Salt-X - Any equivalents? I need to make do with what we have here in GOVE - Not much..

[BM]

Save your money Splash. Those salt removers are proven not to work.

[Splash]

Hi BM - So what do u suggest - do I go in again and operate (remove water jackets for inspection)?

Splash

[BM]

There are cooling galleries on the underside of the head also. So you have gotten to only one side.

You need to establish that you are actually overheating. Take the cowl off and go for a burn on a nice flat day till the buzzer sounds and then check the temp around the heads. Even without tools you can tell if its too hot. Correct temp will see the heads warm to the touch but not uncomfortable. If they are hot and you need to remove your fingers its too hot.

Did you get the thermos and poppets in the right way when you put it back to gether previously?

I would also be inclined to drop the leg again and check your impeller.

Cheers

[Splash]

thanks - will go for another spin with a borrowed ir temp gun.

How coudl the impeller be cause?

What should I be looking for wiht impeller?

SPlash

[BM]

You may well be pumping water but not pumping enough water. It is just something I would check before I started pulling off cylinder heads.

Check the obvious before delving in deeper. Saves time and in terms of a customers engine it saves them money too.

And from the repairers perspective it saves egg on the face if the problem was simpler than the job ended up being. Kinda hard to explain pulling the heads off if the problem turned out to be a crook impeller...

[Splash]

bm-

OK - will remove leg again and check impeller out - but still dont know what to look for.. An impeller is a piece of rubber - how woudl i know if it is not pumping enough water? What should I be lookifg for once remvoed?

SPlash

[Splash]

to confirm - must i have gear in reverse or forward before i remove that circlip in that connects the rod?

In I Go!

Splash

[Splash]

WIll someone please remind me whic way the impellor sits in relation to it's shaft?

When I look down at shaft which way shoudl the impeller tabs be turned (CW or ACW)?

Also, when I pull the clutch rod up, is this forward or reverse?

Shoudl the impllor tabs be bent the same way as the shaft rotates?

Splash

[FNQCairns]

Splash if you have the leg off, the shaft rotates clockwise looking down it and the impeler blades splay backwards from this clockwise rotation. Forget exactly whether up or down, could give you what I suspect but thats no good to you.
If leg is removed change gears at the controls and confirm at the upper terminating shift rod which direction it moves, hope that makes sense.

cheers fnq

[Splash]

Thansk FNQ -

COmpleted = Leg back on with new impellor with tabs correct way.

Previosu uimpellor looked a bit more stiffer than the new one i just put in.

Also significant wear in the metal bottom plate showing deepish groove of impellor movement.

Water out of pee hole appears stronger when started again.

My wife has alos detected an improved sound - but I cannot pick it yet.

I plan to give it a spin early tomorrow with another test.

Splahs
SPlash

[Splash]

Just thoughyt of somehting esle too.

I have after-market water hoses from thermostat housing (underneath exhaust chamnber) to cylinder heads X 2.

These hoses ar enot molded(shaped) like orignal hoses were. Hence the curve bit (throat) of hose is reduced by around 40-50% ID. Obviosuly, this reduction in ID at curve may imapct on water delivery to head - and maybe causing overheating and consequent alarm.

Could I be onto somehting here???

SPlash

[FNQCairns]

$&^$^%&^(^$(^$^$$ YES!!!!!!! restriction on the ID.

I thought you did the impeller last time??

Best of luck on the run.

cheers fnq

[Splash]

Yes, I installed a new impellor (in fact entire water pump kit) Jan 07.

Poppets and stats replaced Dec 06.

After new impellor installed in Jan, took boat out for spin about 4 times - without a hitch - from overheating at least.


THen, on the 4th run (Feb 07) (on the way back), I stumbelled over rocks - steep rise in shallow water - without warning on sounder or GPS (going around 2-3 knots).

This imapct fckd my prop and hence prop shaft.

Insurance job (into dealer to repalce prop and prop shaft) - Feb 07.
They exchanged the whole bottom leg which included a water pump, shafts, etc. with a second hand one.

I had to force them (the dealer) to return my new water pump kit before I left for GOVE.

Have not taken it out since this repair (apart from my spurt yesterday).

Today, I inserted my new impellor back where it belonged.

Long story - but you wanted to know... :-)

Anyway, is this hose crease significant in restriction of delivery water to head?

How do I overcome this with after market water hoses?

SPlash

Took boat

[FNQCairns]

Interesting story, good to know they didn't get away with your new parts at least, any restriction is too much, it will be and is the weak link that may see you stuck miles from nowhere at some time.

Will shortening them help? you may be able to push each end onto each fitting further and straighten the kink?

cheers fnq