But keep in mind the spacers are cut from Billit stock correct? and have the passages made already. hence they will have water in them, and the fact that being aluminum, they will conduct heat better than steel or cast iron, and shouldnt crack. I would check it after running with the temp gun and if you have a huge difference only mess with it then...

Okay guys that does it. I'm going for it. If I blow my motors I will put a "virtual" coffee can out for collections for new motors. Thanks for the input.

Besides I never run my boat hard anyway, I'm too afraid I'll break something that I won't be able to afford to fix.

Just looked again at the Permatex selection - I'd use the Ultra Copper - recommended for exhaust manifolds temps to 700. I have used the Ultra Black before and it worked well, but the copper is ths best one they make.

Hey Outlaw, you're killing me here

It's funny to read this chit because I get the same uneasy feelings when I'm doing stuff thats right on the edge of my knowledge/experience levels. Seems I can't ask enough questions and then when I get those answers, I over-analyze the crap out of them (again, with limited knowledge to analyze it in the first place)

I haven't chimed in here before because I'm not qualified to give an opinion. Just wanted to let you know I go through the same chit on some of my projects. It's good to know you're not just tossing the thing together. Hell, most people aren't even smart enough to ask the questions. Hang in there dude and I hope it all works well.

Stupid question please.....I use this Ultra Copper along WITH the Eddie Marine gaskets, correct? Not just use the Ultra Copper by itself.

I'm going to do this.

Yes use the gasket too, though you can use this stuff to make a gasket as well. You can get this stuff at Napa, etc. Sounds stupid, but read the instructions on the back!

Try not to use too much, as when the surfaces are bolted together it is going to squirt out some - not a big deal. Torque the riser bolts down evenly to insure that the surfaces mate squarely.

Good luck! Signing off until New Years! If you get stuck, ask in the tech section! Have a great holiday!

Jay thanks for the tip. Yeah, I know to tighten the bolts in a "crossing" pattern to seat it evenly.

Third, I laughed just reading your reply. I've analyzed this so much I need to call Billy Crystal.

Good luck. The heat gun deal makes sense. Get some running data. You are looking for temps to stabilize at an acceptable level, say around less than 150 degrees F.

HAHAHAHAHAHHAHAHAHAHAHHAHAHHAHAHHAHHAHAHAHHAHAHHAH AHAHHAHAHAHHAHHAHAHAHAHHAHAHHAH cough ...Ha .........

Formula did you have them cut in water passages into your risers? If so then just have them tap a fitting into it and wala you will have the water flow that is making you uncomfortable. However if it was me I would just drop them on and run them and check. My guess is that they will be fine. At this time however what do you have to loose? Start it up and test it, run it, test it. Who knows it is more then likely ok but by taking it out and testing it you will know for sure and as long as you take your time you will find out and not risk any fire. The damn thing is together give it a try. For christ sakes you sound worse then me!!!!!

Jon