Waterthunder wrote: Work with your engine builder they want to improve the way your engine runs they seam like some good guy's I spoke with them on the phone a bit today. They are going to make some cylinder head, intake and cam changes you should be pleased with the results. I have no problem helpi...

UPDATE: I removed the ProComp single plane intake with rectangular ports and replaced it with the Chevy ZZ Performance dual plane non airgap intake (supposedly the same as the Edelbrock Performer RPM) with oval ports. The rpm increased from 4600-4650 to 5000 rpm. This at least showed that the single...

update on what engine builder suggests for a cam and said after the mods the compression would be 10.8:1 Howard cam Cam part number 120266-12 Cam and Lifter Set Part no. 2600-6500 Duration Intake 290 Duration Exhaust 296 Duration at .050" intake 237 exhaust 243 Valve w/1.70 intake .635 Lift Rockers ...

I just purchased a set from a supplier in Florida, I think the one listed on this site. He told me that he sells a huge percent of all of them sold. He said that if you want stainless you have to use 2" as they don't make 2 1/4" stainless tubing. Just a fyi...

I purchased a BBC 555 Dart engine detuned with a different cam and with a hydraulic roller cam. It was suppose to produce 650 hp with a fairly flat torque curve from 3000 to 5200 rpm To go with it, I purchased a four blade 86” R style blade to go with this setup. I had heard that a 625 hp airboat mo...

I would buy the 2.69 unit if he would design and guarantee an electric switch to engage the clutch from either the seat or the front steer where both could be used. foot pedal is ok for the seat but motorcycle handle would be a pain on front steer

Does anyone have experience with the sensenich saber blades. The product spec says that the blades could not exceed 3000 rpms, my Duramax does not exceed 3000 rpms, shouldn't I be able to run the blades with no reduction needed? I could vary the number of blades and length of the blades to achieve t...

I am running a 2.3 belt reduction on a three blade super wide WW prop. At 700-800 rpm and the props set at 25 degrees the speed of my boat is quite a bit fast, at 22.5 degrees it is just a little to fast. I just blew up my motor and am looking for other options. I like the Duramax option but I would...

Is there another way, getting my engine and prop etc. off is a pain in the rear.

And my uhmw hides any small hooks I am assuming

I have a 8x20 Silver Dollar with the trim tab beaten as high as I dare and the nose is still heavy in the water at cruise.

Is there some type of guide for dummies that can step by step help me identify where the hook or hooks are?

I have a 8x20 Silver Dollar airboat that must have a hook in the bottom. I have the back trim tab trimmed as far up as I dare.

Is there anyone in Texas that can help me find and repair, or find and tell me how to repair the hook?

Thanks, mark

Do you have a belt drive or direct drive?

Do the blades turn counter rotating?

Thanks, I have talked to Patti and Jim at WW and to Century as well. Century said there was no way to modify what I have, only choice is to purchase new at 3100 plus packaging and freight. I can buy a new four blade 12" wide that Patti said was a better option for my motor and using my current drive...

I have a Whirlwind AB300 with 3 - 80 inch diameter, 14.5 inches wide, Tip width 8 3/4, Whirlwind Master Blaster Blades that turn counter clockwise. I am looking for a used AB400 hub and one extra blade, or a complete 4 blade hub and blade setup that is similar. I have a Century Air Boat Drive Unit o...

I didn't think of that. I assume that there would be torque when I am going from zero miles per hour until I get up on plane that would require some rudder to correct but I assume that if it is rigged right that the stick would be about neutral on pressure when I am up on plane.... The problem is th...

Thanks, I have changed my profile to include my city, Bryan, Texas. The power pole base is not in the water, but the top part of it is sticking up over on the right side in the flow of air that comes off the prop. Maybe I just imagine that it is part of the problem. I purchased the boat and started ...

Thanks, I have never been accused of being too patient or too slow... I tend to apply if one is good two is better and three is best. At cruise I have to exert quite a bit of forward (I think) pressure on the stick. Riding the rudder works but is hard on my arm and reduces efficiency, what is the tr...

I have very limited experience with airboats to start with. I purchased an 8x20 SilverDollar that has had a deck and lights added to the front. To me, it seemed to run a little nose heavy/flat when on plane. Since purchase I have added a bunch more light weight, two fairly heavy bow/storage boxes (1...

Thanks, the two settings were 25 degrees and 20 degrees. It is the Whisper Tip sw80.

It is a Whisper Tip and the compression is good all around.

I have a 2002 Silver Dollar 8x20 that weighs about 5500 pounds including the trailer. It is powered by a 502cid/502hp GM crate motor with aluminum heads, with a 850 Holley Carb, with a 2.3:1 belt reduction drive on a 82" 3 blade Whirlwind prop. It has an aluminum shooting deck up front, 150 pounds o...

As long as the shot placement is right a 25-06 is great. However, I prefer having a rifle that will punch a hole though the deer leaving you a blood trail to follow even with shots that are not placed exactly right. I hate losing animals and tracking them all night.

UPDATE:

Problem solved, thank you for all the helpful advice.

Moved radiator to 4.5" from prop, removed bbq grill, fixed timing per recommendations, now runs 150 to 170 depending on outside temp...

I took fannman and rbjscott's advice and ripped off the bbq pit grill (with my trusty barbed wire fence tool) and reran my test, at 12 minutes my max temp was 175F (the day was 10 degrees to 15 degrees cooler but the test was at least 20 degrees cooler) and at idle it went up to 185F. On monday I pl...

The temperature is being measured on the intake manifold to the left and right of where the thermostat housing on the motor is.