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Topics - mstrader77

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WTB / WTB Berkeley Intake Grate
« on: September 22, 2014, 07:05:47 PM »
I need a stock intake grate for a Berkeley H-2155 intake. It's about 14.75" long. I found a cracked finger on mine yesterday. Luckily, it didn't break off and go through my rebuilt pump. Let me know what you have. Thanks.

2
Projects / 1973 19' Fiberform Malibu Jet
« on: May 07, 2014, 09:21:22 PM »
Here are a couple of pics of my project I recently completed. The first launch was last Friday. It's a 1973 Fiberform Malibu. It has a 455 Olds and a Berkeley JC Pump with an A2 impeller. 61 mph @ 4500 rpm on 87 pump gas and conservative timing. Not pretty, but will make a good river boat for my family and I.


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Jet Pumps / Bowl Bearing Tightness
« on: March 28, 2014, 11:18:59 AM »
I just installed new bowl bearings in my 12JC pump. After pressing them in, I installed just the shaft to check for binding. I am able to turn the shaft by hand, but it is not silky smooth. The shaft is straight. Is this normal for fresh bowl bearings?

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Jet Pumps / Loader and Rock Grate Questions
« on: February 03, 2014, 07:06:37 PM »
The loader that came off my pump is pitted and I don't trust it. It looks like a Sport Edition loader. I was going to install the rock grate off of another pump I have, but it appears too short. The rock grate came off an H-2518 intake. This intake is longer than the H-2155, but the grate bolts closer towards the impeller making the grate short. This leaves about a 2 inch gap behind the grate when bolted in the H-2155 intake.

Here are my questions:

1. How long is the stock rock grate for a JC pump with an H-2155 intake?

2. I notice Berkeley has a 7 and 9 bar grate on their website, but all  the used grates I see are 6 bars (including mine). What are the advantages/disadvantages of the different styles?

3. I have read that loaders improve top speed, but can cavitate out of the hole. Is this true of a sport loader?

Thanks for the help.

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Jet Pumps / Berkeley Suction to Intake Gasket
« on: January 29, 2014, 09:17:20 AM »
Can the suction to intake gasket be reused on a Berkeley pump? Is this common practice?

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Engine Mechanical / Electrical / 455 Cam
« on: December 20, 2013, 09:24:20 AM »
I need a new cam for my 455 olds. As far as I know, the engine internals are stock. The cranking compression is around 150 lbs. I assume it is an 8.5 to 1 engine since there is no oil cooler. I am running an A impeller in a Berkeley pump. I may switch to an AA at some point. It has an Edelbrock 750 carb, O4B intake, Ka heads and Berkeley logs. Comp cams recommended the XE268H cam. Mondello recommended either the 18-20 or the 20-22 for a little extra. I would like to avoid changing rockers and pushrods, possibly springs.  I am also looking at the XE262H as a possibility. It seems like it would be good with an AA impeller. Does anyone have experience with these cams?

The boat is a 19 foot Fiberform Malibu.

Thanks, Mark

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Hulls / Advice needed on boat stringer/hull reconstruction
« on: October 31, 2013, 09:12:29 AM »
I am redoing a 1973 Fiberform Malibu jet boat. This boat has a 1/4 inch layer of plywood under the stringers. It appears the plywood was tabbed to the hull, then the stringers were tabbed to the plywood. On top of the stringers, a plywood deck was attached and tabbed to the side of the hull. This created two decks that the seats mount to. In the center was a recessed plywood deck with open bilge beneath. The whole assembly was then coated with fiberglass and covered with carpet. The stringers and all the plywood were wet or rotten. Originally, I was going to replace the plywood and reconstruct it how the factory made it. I talked to a local boat shop about it and they said they would leave the plywood out and add CSM/Roving to reinforce the hull if necessary. This seems like it would be easier than gluing plywood down and would not rot in the future. The cost is about a wash either way. Is there strength concerns that could arise from leaving the plywood out? It seems that the foam would provide plenty of strength and render the plywood unnecessary. Does the plywood transmit the load on the hull to the stringers? Does the plywood act as a giant bedding compound? I am unfamiliar with this type of construction. Hopefully, someone can help me out. The previous owner said the boats top speed was around 65 mph, so I don't want to weaken the structure. Here are a couple of pictures. The red outline is where the plywood sits below the stringer. Thanks for any help.

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Engine Mechanical / Electrical / 455 Olds Water Pump
« on: October 07, 2013, 08:08:43 PM »
I recently bought a 1973 19' Fiberform Jet (Malibu?). The engine is a Berkeley Pack-a-jet. There is water leaking out of the water pump weep hole when running. Is there a source for marine water pumps for the 455? I can't seem to find them anywhere. Thanks.

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