Poppet valve

[78scout]

I have a 120hp 97mercury force outboard on a 18ft ranger bass boat. Kinda new to outboards, but mechanically inclined. After I start the motor, it seems like its taking a while for it to start peeing. I changed thermostat and impellar when I bought the boat. I was wondering if there is a poppet valve on this motor. If there is, do you think that could be the issue? Thanks to anyone that has some input

 

[dingbat]

I have a 120hp 97mercury force outboard on a 18ft ranger bass boat. Kinda new to outboards, but mechanically inclined. After I start the motor, it seems like its taking a while for it to start peeing. I changed thermostat and impellar when I bought the boat. I was wondering if there is a poppet valve on this motor. If there is, do you think that could be the issue? Thanks to anyone that has some input

1995 Force 120 Cooling flow path

Hi There, I have a 1995 120 that is overheating. Can anyone explain the water pathway through the engine so I can trouble shoot the location of blockage? I had the engine running briefly on hose and thermostat housing off and had no flow out the thermostat housing. I took the leg off and have...

forums.iboats.com

 

[topgun3690]

I was wondering if there is a poppet valve on this motor. If there is, do you think that could be the issue?

Don't believe your motor has one, so it's not the issue. You could remove the tell tale hose and check it for debris, along with the 2 fittings it attaches to. I'm not 100% sure but I believe the thermostat has to open before the tell tale pisses. On a cold day that could take a little while.......

 

[78scout]

Thank you for taking your time to give me that info. I will start with the tell tale and the fittings for sure. I didn't think there was a poppet valve.

 

[topgun3690]

Insects and mud daubers can plug things up big time. Wouldn't hurt to check it out.

 

[78scout]

I appreciate it topgun. I will be on it tomorrow. Thank you again

 

[Nordin]

I think the poppet valve disappeared on the 3 and 4 cylinder Chrysler engineered block in mid 80.es.
The engines I have worked with Chryslers up until 1977 and then Force from 1987 and up the Chryslers had poppet valve but not the Forces.
Your engine is a late 90.es and do not have the valve.
Maybe you can see a hole in the block casting in the lower part of the exhaust side where the poppet valve should have been mounted.

 

[jerryjerry05]

No poppet on yours.
They had one installed until 87/88 on the 85/125

 

[The Force power]

According "the big book" the 85 hp had it up to '89 early B models & the 125 hp up to '88 B models
The port position, to attach a tell tail or temp. sensor is prior to the thermostat for those

 

[topgun3690]

My original PH (1978) had a poppet......and the rebuilt PH from a 1988 Force had one.....

 

[Nordin]

Seems to bee different years when the poppet valve disappeared!
My youngest son had a 85Hp 1988 and it did not have the valve.
I have one 120Hp 1991 and one 125Hp 1989 and none of those have the poppet valve.
Have stripped out some blown blocks (3 cylinders 85-90Hp) that have been out of order to rebuilt and none of those have had the poppet valve.

 

[The Force power]

Seems to bee different years when the poppet valve disappeared!
My youngest son had a 85Hp 1988 and it did not have the valve.
I have one 120Hp 1991 and one 125Hp 1989 and none of those have the poppet valve.
Have stripped out some blown blocks (3 cylinders 85-90Hp) that have been out of order to rebuilt and none of those have had the poppet valve.

Maybe they made a printing mistake with the 85HP

 

[jerryjerry05]

I had a pair of 88/85 and both had it.