i told him that.. lol

Ya, I guess I should have explained. This is the motor,

http://i21.photobucket.com/albums/b2...enname/3-8.jpg

and it’s in this boat.

http://www.supernova19.com/resurrect...e/1b2206a0.jpg

Made a trade over the winter for a boat and a couple motors. One of the motors was supposed to be a “high performance” big block. Figured I would fix whatever was wrong with it and dump it in the boat that came with it. After looking it over for an hour or two I knew it wasn’t a typical “hi-pro” motor. Took it apart, was more impressed and got some numbers off of it and started to research. Got a good idea what it was and then Bob M confirmed it and also filled me in on the rest. It is a real 1969, Kiekhaefer 482ci offshore race motor. From intake to the oil pan, from the harmonic balancer to the flywheel. As for the rest (carb, dist, waterpump, etc, etc) I don’t think were original to the motor. I figured someone bought a tired, out of date race motor from whoever had Kiekhaefer at that time and then tried to put it a car at some point and either broke it or it was already broke and gave up on it. Good thing to because all the important stuff was still with it.
Spent about 2 grand over the winter fixing the motor and I do most of the stuff myself. There are plans in the future to replace the carb (just not a Holley fan) with an Edelbrock. And Fixx is right, there is only so many rpm’s I can get while on the hose before it sucks it flat so some seat of the pants timing will have to happen at the ramp but like I said I’m not a fan of the distributer either. Like you guys say, if I’m only getting 17* mechanical advance then its idle timing should be set at something like 17*. Seems a bit high.
The best thing about a boat like this, a vac distributer, a Holley 4150, 850d/p carb, any air cleaner you want it’s all up to you. No motor box means no rules.

Hey man I think I just figured out your problem. Someone put the motor in your boat backwards! :-) nice looking boat. Probably run pretty good once you get the bugs worked out...

F-inscreename- If you get that motor running right in tha little phlat bottom put a parachute on cause you are gonna LAUNCH!!!!!

1) Yup. Ignition. More specifically the advance mechanism set up.
I've run similar cams and compression on the street and they need more initial. Try around 18-20 degrees at first, may want more. Make sure that's where it starts. Your present set up may possibily already have started to advance before where you are taking your present reading and thus when you quickly bring throttle back to rest, the timing may actaully be less because of momentary less rpm and thus cause your engine to quit.

If not using vacuum advance, make sure the mecanism (plate) does not move.

2) No. Could probably use more, but that is nit picking.

You think that’s bad you should see the boat that sits next to it. 2 BBC’s sitting tail to tail with a single V drive in the middle to a single prop. Everything in that boat is backwards. Lol

https://www.youtube.com/watch?v=IN0QsxKKywI Ya, didn’t do all that bad last summer for being 55+ years old with the 454. I took the 454 out (now using it in the Donzi I got with the deal) and replaced it with this 482 (which is a 495 after it had to be punched to fix the cylinders) just because I couldn’t see letting a motor like it go. The 454 was pretty peppy by its self. This 482 should get the boat to another level.
The boat is not actually a flatty. It’s a Biesemeyer, 4 point Hydro, drag boat. It also likes to push the nose over when you are flying along. Trying to find the right prop for it so it will stop doing that but most props create stern lift so it’s not happening. You would think figuring out 55 and 40+ year old technology would be easy in this day and age but here I am on my 3rd year owning it and learning new stuff everyday but not enough to get it to a 130mph like they did during the Long Beach Nationals in 1961.

Just to clear up a misprint by me. It’s actually a Holley 4150, 850 d/p.
I think Fixx is on to something with it running rich cause it is but like you said I don’t think it’s the only issue.

I did make a block off plate for the vac advance and locked it down over the winter but with all the issues I put it back to vac advance just to see if it would help. Another concern I have is when shifting it in gear will also kill the motor without giving it a little gas which is not good. Thought with it having a .21+ V drive and a 17P prop was too much for idle speed to get going (like letting the clutch out to fast stalling a 4 speed) but never had that issue before with the 454. It shifted so nice I almost enjoyed it more just putting around tight areas showing off. Figured now I would have to start it in gear which sucks for a drag boat with a transmission.
Next time at the ramp I’ll start with the timing where it’s at and start bumping it up until it pings and I can shut it off for a minute and have it restart without sounding like I have a dead battery. Also looks like Momzy (the name of the boat) will be getting a new distributer in the future. I have MSD set ups in a couple other boats. Just trying to avoid having a MSD box in this boat cause it wouldn’t last long in what we refer to as the Jet Ski with a big block.
Where I live there are so few times where everything falls perfectly in line (wind, waves, weather and tides) to take it out so I try to get everything done long before I take it to the ramp. So I thank you all for bearing with me as I try to sort it out in the driveway. I would love to just throw some money at it (new dist, new carb, etc) but with the Donzi project I started this winter is not done yet, the 496 in the Nova that imploded this spring 3 weeks before the boat show and building this motor during it all I’m a bit tapped out so I’m stuck with what I got. The saddest part, I have a perfect distributer in the 454 I took out of the boat sitting in my garage. Not a chance I’m touching it though. That motor is perfectly tuned and it’s going to stay that way.

I agree that giving it more timing at idle will help. Another thing to consider is the accelerator pump cams/squirters. You simply might be introducing too much fuel from the accelerator pump when only goosing it a little bit. A 50cc pump on the primary coupled with large squirter nozzles and an aggressive cam setting, simply will douse the engine with gas with a small movement of throttle, at which it cannot burn off at such low rpm, leading to it stalling out from too much fuel. Hard to tell in the pic but it looks like you have a 50cc pump on the primary. I'd run a 30cc primary and 50cc on secondary.

I’m in an “all and everything” state of mind at the moment. Like I said before I get so few times I can run this boat around here that doing one thing and taking it to the ramp over and over may take months of tinkering.
I’ve watched about every video on Holley carbs and even learned a little history on them to. This very well could be the original carb for this version of a Kiekhaefer 482. The dates work, they had them in Nascar at the time and Kiekhaefer had Nascar connections. But… It’s pretty obvious that it has been running rich a bit. You should have seen it before I rebuilt it, it was black inside like it was in an oil fire or something. So after my extensive research I’m leaving the jetting alone, re-tuning everything the way the vids and such say to and changing the power valves. Some people say to measure manifold vac and cut it in half and others say to only subtract 2 inches. The classic way (for an old carb) is to cut it in half so that’s what I’m doing. I’ll check the air bleeds slot to the butterflies when I have it on the bench for the power valves.
Now for the distributer. Also did a bit of research on it. It’s possible (medium chance) that it’s an original also. If not it could have been bought within a couple years of the motor being made on the open market. The distributer even came with a Accel hei cap with coil post, a separate massive Accel Super Coil, 45,000 volts (with a bracket and bolt attached that had the same alan head bolts that they used on the rest of the motor) and Accel “Fat Stuff” wires that haven’t been around since the 70’s. The center weight is a 365 and the outer weights are 101 (can’t find this combo on any curve chart) and have no clue what the springs are. Looks like one end of the 365 plate may have had some light blue paint on it in a picture I have before I cleaned it up but… Best I can gather the 365 plate is very desirable and it’s set up to be all in at a low rpm. Like 2500 or even less but I am probably wrong because I know nothing about distributers.