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Yes, I was told GE SCS 1700 almond is what Grady used.

This https://www.pksupplies.com/ge-scs1700-series-sanitary-silicone-sealant-fungicide-101-fluid-ounce-cartridge.html

Used 4200, just in case I have to remove it someday. It was really tough to get off. took a little gel coat with it.

Went with the Armstrong 6". Worked out great. You cut a 7 3/4" hole for the 6" so it is plenty big enough to see inside and get your arm in there to re-seal that stupid plastic plug.

You need to try a different prop. I had the stock SW2 15 1/2 x17 tuned for my Tournament 225. I was cruising 27 mph at 4700 rpm. I went to a new Powertech OFS4. I am now cruising 27 mph at 3700 rpm. At 4700 I am now going 36 mph. Ken at Prop Gods said very few prop shops properly tune props for...

Gill is out of business. I just found out Armstrong makes a 6" plate. I will go with that one.

I want a new plate because the screw holes on the original have plastic inserts that are striped, and the 5" bring that is suppose to seal it is not available. So to seal it I need to use good adhesive to seal it down, then it is a project to see if I have water leaking in. Armstrong makes a...

I am thinking of putting in an 8" Armstrong inspection plate to replace the useless 5" one on on my Gill bracket. Do I need to be concerned about structural issues with the bracket? Has anyone done this?

I am going to remove and re-seal a leaking Gill bracket on my Tournament 225. What is the recommended sealant? I was thinking of using 4200. Anyone know what Grady used?

fast texas, I would be interested to know the results of your prop change. Do you need to be at nearly 4000 RPM to fully plane like I do? I will be looking to a different prop in the spring. We don't start boating until June up here in NH.

My GPH are higher than the performance bulletin. Next season I am going to try a different prop. Seems too easy to get 6100 rpm I have checked and my GPS is reading mph.

These guys have them http://sternsafe.com/price_List.html They will cut them to length . They measure the rod without the ball. They almost never answer the phone. Email them.

Thanks Suzukidave, I will check those things. I am still confused about this, as this motor runs nice and everything seems good except the speed. I agree I should be planing nicely at 4000 rpm., rather than barely planing. Don't really understand what you mean by "prop is spun". Boat is out of...

Interesting point. The test engine had a 2.0:1. My engine is a 2006 model. I need to check the gear ratio. I was told the prop I have is the original. Not everything I was told has proven not to be true.

I have determined that it is not a 30" shaft. Not sure why the mechanic told me that.

I have discovered that I have a 30" shaft motor on this boat. All information I can find, including an original brochure for this boat states it should have a 25" shaft. I am surprised it works as well as it does.

"Obviously, something is not accurate, I'd suspect the Yammie gauges. NO WAY an engine turning at 6100 RPM is going to burn almost the same amount of gas as one turning at 4000 RPM!" At 6100 rpm it burns way more fuel per hour but is going almost twice as fast so about same MPH

I get my RPMs and fuel flow from the Yamaha gauges . I calculate mpg from GPS speed

Exactly why I am confused Finest Kind. My speed is from my GPS RPMs and fuel flow are from Yamaha gauges

I have a 2006 Grady White Tournament 225 with an F225 I have owned for about a year. The Yamaha performance bulletin shows at 4000rpm 29.4 mph 3.34 mpg 5000rpm 37.6 mph 2.98 mpg 6050rpm 45.8 mph 2.35 mpg My results are 4000rpm 20mph 2.3 mpg 5000rpm 30mph 2.4 mpg 6100rpm 38mph 2.2 mpg Boat is...