Engine Temp

well while watching the pulley might help, you need to pay attention to the set screw on the side of the pump and make sure it's facing the same direction before and after the RWP is removed from the bracket, otherwise the pump can be put on backwards and the pulley will still rotate in the same direction.

79nautique wrote: well while watching the pulley might help, you need to pay attention to the set screw on the side of the pump and make sure it's facing the same direction before and after the RWP is removed from the bracket, otherwise the pump can be put on backwards and the pulley will still rotate in the same direction.

Chris,
We were discussing which way the blades go (combing) and not a backwards housing install. Yes, it's important too but hasn't come up - yet!!

TX Foilhead wrote: It did work, but the boat running a steady 190 or so leaves little time for watching anything but the temp guage.

Man that hot to me.. I run between 150 to 155.. Thats normal temp, isn't it?

I was poking around on ski discount marine and noticed that they advertise an impeller removal tool.

Is this necessary when replacing impellers? Also, it looks like the gasket is a separate item. Is this typical?

I think the tools migt be useful on the Vdrives where your working blind and don't have room to pry it out with something like a screwdriver, not needed for a DD.

I would just run the gun everywhere.
Stat housing will heat up when it opens. Otherwise it has cool bypass water from the waterpump blowing past it. Intake manifold is where you can verify your temp gauge is accurate. Exhaust is always good to check, too. You should be able to leave your hands on your exhaust manifolds when the engine is running.

After reading this post I am a little worried about my 1990 196. Can someone tell me where the impeller is located so I can check it? I believe it is in the housing on the corner of the engine closest to the driver seat??? I am not a mechanic by any means, I hate to sound dumb but all of this talk is over my head! I just finished putting a new floor in my boat last night, what a nightmare!!! I would like to check the impeller before I go out in it tonight. It will be the first run of the season for me so I am very excited! Living in upstate NY & loving the water, makes for very looooong winters! Thanks!

Hi Tag,

You're right on the location. The impeller is inside the raw water pump, which almost looks like the equivalent of a mini power steering pump on a car.

You can probably take your test drive without worrying. If you're temp guage reads normal, you're good for a bit. The impellers are a normal maintenance item though.

I haven't done mine yet, so I'm talking from more what I've read than what I've done. I found a good article hear though, I posted it earlier too:
http://www.aquaskier.com/articles/impeller_replacement.htm

My friend had done a similar job on a Mercruiser stern drive, and gave me the tip of using a large radiator hose clamp, to sort of tighten down/squish the new impeller to fit it into the housing. That's all I know for now, hope to report back soon with a real, first hand facts. I'm guessing if you replaced your floor though, an impeller should be no sweat for you. I think it rates much lower on the Do It Yourself Capability rating scale.

79nautique wrote: The vanes are flexable come on, get some hand and arm strength and be a man or find some one that is not a wussy to do the job for you.

Even I can do it!!! Hose clamp??? Next thing you know someone will get out a small ring compressor!

Squeezing it in my hand works just fine for me.

79nautique wrote: Hollywood wrote: Squeezing CQ in my hand works just fine for me.

LOL

I think that works for most people.

Alright, alright, I get yeah

My friend who suggested the hose clamp runs Mercruisers. Maybe Mercruiser impellers are stiffer?

Or, maybe guys who run Mercruisers are wussies? Well, that's what I'll tell my friend

I'd like to know at what temperature these marine mufflers would start to burn up. I think there may be a lot of unecessary worrying about the engine temp. Think about regular car temps...regularly going over the 200° mark.

^^^ Exactly what I'm thinking Pete.

I keep an eye on the temp gauge, especially after first start up of the day, and I'll watch to make sure 1 of the pipes isn't spewing out a ton of steam, but you won't find me using the risers as handwarmers.