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I don’t have any room on the dash! This is a ‘59 seafair sedan, and I’ve got steering, speed, rpms, and gas. It’s full.

Im thinking about something like that. I don’t have room on the dash. But something to keep tabs on the cooling. So, when engine was cool, at idle, what were you seeing? At full throttle? I rebuilt water pump, new pipe and gasket. Seems like telltale was solid, but have not been able to measure...

I’ve gone back and forth on this. I’ve had a couple of old motor mechanics who recommended that for these engines. I worry that the torque specs assume perfectly mated surfaces and threads. I’ve done my best to clean threads and clean the gasket lands.

Now the trick is trying to find a day to put the boat in the water before the weather really goes to crap! I live in the PNW, and though moderate through winters, it’s cold and rainy starting about now. I’m determined to get it out and check the motor. Plan is to put a few hours on it, look at...

Yes. I have the WMK-40 carbs. I went back through them, slightly changing the tangs, and checked the needles while I did. I had initially set the tangs to the 13/32 measurement, but there is a lip and a center valley. I am assuming it is measured off the lip, but that left the top tang slightly...

I also wanted to confirm that the new quicksilver needles do not appear to have a neoprene tip. I ordered replacements as I thought i must have bought an off brand, but they appear to be all metal

An update- I have a new inner plate coming. I've decided to use the Locktite 2422 for the inner water cover piece. My middle baffle piece tightens up with finger pressure, so I'm gonna stay with that piece. Merc manual contradicts itself. On the main page for powerhead, it lists locktite A for...

Good to know! Thanks for the lead. I’m not seeing any info. I read a bit about it and I think I’m gonna use red RTV on the inner exhaust plate because of temps(plus I already have it)

The one thing on this exhaust plate is the temp. I specifically got the RTV high temp Red for this specific gasket, but i will look at it. Im building up quite a gasket making collection!

'i haven't used that stuff before. What version of it? Looks to be a brand

the permatex aviation gasket maker? I am using that on a number of places in addition to dry gaskets. That helped with a slightly out of straight headcover.

I do have another question while im wading through the tech info of these products and trying to find the best option. On these gaskets with engine being old and imperfections on surfaces, would you install these gaskets dry or with a light RTV? I'm getting conflicting info, but my gut tells...

You could be right. I hope im not being too annoying, but im enjoying the process of it all. The interesting thing is, according to the Merc manual, this is the only piece in the whole motor, whereas most of the rest has more modern and appropriate thread lockers and corrosion inhibitors. The...

I am trying to understand why Mercury used the resiweld. I am assuming it gives the bolts more resistance to the heat/cool cycles and vibrations than the 271 does. But i wonder if there is anything special about this formulation? Ive emailed both Henkel, who made resiweld, and Locktite, who made...

I’m going back and forth with that. It is an important decision because it’s hard to get back into this area if I need to again. And, I can’t prove it but I do wonder a little bit if the rebuild done without the resiweld contributed to the water in the cylinders issue, and possibly to even...

What is the best modern substitute for the Resiweld that is used for the bolts on inside cover?

I was actually able to get all of the inner bolt covers off. I don't know if someone had done a previous rebuild and not epoxied them. I did a bunch of reading and talking to people, and general consensus was that these plates should be replaced as they are under enormous stress, especially in...

I decided to buy a new inner cover. I talked to a couple of local old techs who said that if the motor was run in salt it is general practice to replace these

I’ve looked over it a few times and didn’t see anything, but I’ll give it a good look when I get back next week

Hey yall. Thanks for the responses. Ive been trying to learn as much about this as possible. I found an old thread talking about exactly my issue. The piece I am talking about is the 'exhaust baffle'. I think this is where water was entering my engine, and for some reason, it was mostly on C4...