IMO, Al David’s hull are right there near the top of the list for one of the best riveted hulls made. I think Benny Webb takes more time doing final finish work...smoothing out edges, shaping, and hand filing things. But Al builds his standard hulls more robust. I’d run one. There it is folks! Seve...

Finally getting around to a follow-up. I laid down the Benjamins for a 72 inch NGQ and I have to say, hands down the best prop I've run. Between my two aircraft boats (both of which ran the same SV540), I've run an Excalibur, 6 blade Warp, 6 blade Saber, 5 Blade RazorX and now the NGQ. All of them 7...

unforgiven11B wrote: ↑

Mon Mar 01, 2021 3:02 pm

Mr. Gerald’s is a Don Davis.

True story.

If the suction screen was clogged, wouldn't that cause low oil pressure everywhere, not just one port (assuming both gauges are operating correctly)?

Are you taking the readings off the same point on the engine ? With Cadillac pressure will fade from front to back if clearances open up. If you two gauges are off one T fitting I would be inclined to think one of the gauges may be defective. The gauges are being fed from the two ports on the acces...

Diggin I have had mechanical gauges go bad before although its not happened very often. I know that at one time you had a construction co. of some sort. Check with your mechanic and see if he has a test gauge. I always have a Good quality gauge in my tool box for reference. I sold my building, clos...

BTW, nice informative post. I don't have a spare mechanical gauge and hate the idea of buying an extra but I guess that's about the only way I will know for certain.

I added the electric oil pressure gauge since I decided that information was more important than CHT. Besides, I had to look down and behind me to see the mechanical gauge that was mounted on the engine. I had one spot on my console and it is now occupied by the electric oil pressure gauge. JS

Diggin, I agree with unforgiven, I would try another mechanical first, gauges definitely fail, that seems more likely vs. bearings wearing out in 300 hours. Where do you have the two gauges plugged in? Mechanical on the oil screen and electric elsewhere? This is aiming towards the check valve comme...

Have a question about oil pressure gauges. I have two oil pressure gauges; an electric one that reads on the console and a mechanical gauge on the engine itself. The mechanical gauge has been on the engine (SV540) since I had it built, probably close to 300 hours ago. The electric gauge is new; I ju...

Damn.

pipedog wrote: ↑

Sun Feb 07, 2021 10:21 pm

Well I got a problem!!

Did you figure out what happened? Was it the engine or gearbox and how did you get them separated?

Coleman Landing is really nice for a county park but it is first come, first served and now that it will be the center of activity for the Freedom Ride, you best be prepared to be there by Thursday morning to guarantee a spot. It's going to be crowded. This weekend had nothing going on aside from th...

I've run 4 blade bowtie, 5 blade and 6 blade props on my SV540, getting ready to run a 2 blade. The bowtie I imagine is much like a 2 blade but you can definitely hear a thrumming sound with it, which I have to imagine is a harmonic of the trailing blades running in the wake of the leading blade. Th...

If it fires with ether, you're getting spark. I'd start by looking at your carb and it's not the first time I've heard about accelerator pump causing hard start issues.

SV540, 10:1, 290 cam

My new to me 12' Thurman is in need of a better prop. I've run a 72" 5 blade RazorX and found that the combination doesn't work that well; engine had to run too hard to keep moving. Cage is an original Wayne Cone expanded metal on the sides, open on top. I believe it's the expanded metal since ...

Just weighing in because my tag was brought up. The issue I had with my engine (which was Marine Power prepared, not Levitator but basically just the same; GM crate engine with proprietary electronics attached) started off as a bad coil, straight from the factory. The only thing I noticed is that th...

If you are handy with tools, there's always another route to take. There's a gentleman on here that goes by loudmouse. He uses a setup where he basically takes a 6.0 LS pullout, slaps two turbos on it along with the tune he's developed and goes. If he wears out the engine, no big deal; less than $2,...

L&LLandServices welcome to SA! :salute: If I am spending your money, it's hard to beat a Watherthunder engine! "We have devolved a complete line of LS1, LS2, LS6, L92 and LS7 all aluminum Small Block Chevy's starting from 400 horsepower all they way up to 900 horsepower. These Engines rang...

The power you can get from an LS is more than enough for a 14' boat. As far as hp/gear/prop, number one question is 'what are you going to do with the boat most of the time?' Sure, we all want that boat that will climb the Ridge fully loaded but is that practical for the couple times a year you need...

The software I use is called Diacom from Rinda Technologies. They have interfaces for almost every marine product out there (including PCM, Mercury, Marine Power, Seven Marine, and many others). Looking at their site, I see that the adapter used on Marine Power is the same used on PCM so the plugs ...

The software also allows you to do a number of different system tests, the most valuable of which is cylinder contribution test. You can also do test runs and record the results. This is useful because you can see trendlines developing; changes in oil pressure, fuel pressure, fuel consumption. In fa...

The software I use is called Diacom from Rinda Technologies. They have interfaces for almost every marine product out there (including PCM, Mercury, Marine Power, Seven Marine, and many others). Looking at their site, I see that the adapter used on Marine Power is the same used on PCM so the plugs a...

I can't say specifically for a Levitator but on the Marine Power version, the data port is at the front of the engine near the supercharger intake. It isn't an OBD II style plug; it's flat. You might look there.