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Messages - mash on it

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Arcade / Re: I dont know what its called..
« on: February 27, 2021, 08:04:41 AM »
Pulling out your pump and freshing it up isn't that difficult. Once the impeller is off, and it's in good shape, just a matter of a wear ring clearances, and put it back together. Same if you need a new impeller. It's not rocket science. (Just jet boat science) youtube has a very indepth videos, from cp performance.

I've done half a dozen pumps over the years.


Engine Mechanical / Electrical / Re: Cooling on 460 Ford with Berkley
« on: February 27, 2021, 07:52:33 AM »
Yeah, center risers are a bit different, but the same idea. There is usually a low point port, and a high point port, plus a port for the elbow on top. Always fill from the bottom up. Some mercruiser styles only fill from the bottom and out thru the elbows.

The hose diameter isn't usually a problem, plenty of lake water to cool the engine, and the pump provides plenty of water, usually too much. My big block only has 1 dump line, ½ inch, and has plenty of flow.

Post up pics of your center risers to see how they should be plumbed.


Engines / Engine Parts For Sale / Re: PTO and u joint assembly
« on: February 26, 2021, 07:31:34 AM »
That's a Rockwell unit, bolts to the crank using 4 of the flywheel/flexplate bolt holes. No pto adapter needed.
Olds, Ford and Chevy patterns available, what this one is, I don't know, but I have an Olds and Chevy ones that Ill compare, but it's at the river.. and I'm not til Saturday.


Engine Mechanical / Electrical / Re: Cooling on 460 Ford with Berkley
« on: February 26, 2021, 07:13:16 AM »
I'm assuming logs and snails.
From the pump, to the lowest side of the logs, from the higher side of the logs to the water pump block off plate, out the thermostat housing to the snails and overboard thru the exhaust.

I prefer a gate valve on the pump to slow down the water on the way in, and to regulate engine temperature.
Mine runs at 140°f at cruise, 155°-ish in the no wake zone.

Plumbing with headers is different.

You do have a water pump.
Is says Berkeley on it.


SoCal Lakes / Re: 12jc-a jetovator
« on: February 25, 2021, 07:56:04 PM »
That's a Place Diverter, it steers first and roosts second.
A Jet-O-Vater, Berkeley trademark, roosts first and steers second.
You have the better product.

It looks like there is a quarter of an inch more up travel, maybe more.
The handle has some adjustment as well as the cable mount on the Diverter.
The rudder only really works in the no wake zone, anything faster, and it scrubs speed. 5 squirt bötēs, not one rudder.

Hope this helps


Jet Pumps / Re: Jacuzzi loader grate.....aftermarket pro scoop.....
« on: February 25, 2021, 07:12:39 PM »
MPD out of Costa Mesa used to build custom WJ Loaders, I don't know if he still does. He was the WJ guru on the west coast.
(949)631 2040


The No Wake Zone / That time of year again
« on: December 04, 2020, 04:59:20 AM »

Happy holidays


The No Wake Zone / Re: Black Friday
« on: November 26, 2020, 03:25:45 PM »
More of the same for Friday and Saturday on the river.
Parker Thanksgiving Regatta on Friday and Saturday also.


Boat Racing / 74th annual Thanksgiving Regatta
« on: November 20, 2020, 07:40:26 AM »
From SCSC Racing:

"Absolute Speed & Marine 74th Annual Thanksgiving Regatta presented by Nick Rose Insurance Update
Posted: November 16, 2020

Update 11/19/20: SCSC is pleased to formally announce 74th Annual Thanksgiving Regatta is on!! Update 11/18/20: I just spoke with La Paz County Park Director and we are preliminarily a go for the Absolute Speed & Marine 74th Annual Thanksgiving Regatta presented by Nick Rose Insurance. I have a final conference call tomorrow (Thursday, November 19, at 9:00 am) to iron out final details. Most likely the following: All teams will get temperature check when they come into the park or pit …


I'll be there.


The No Wake Zone / Re: Going back together again
« on: November 20, 2020, 07:29:49 AM »
The latest, as of 11/19, the races are on. @ La Paz County Park. Hopefully Ross @ SCSC will confirm.

I'll be there.


Jet Pumps / Re: Question About Intake 76 Executive
« on: October 28, 2020, 04:46:54 PM »
I'd check to see if the intake is still epoxied into the hull.

The intake fin is not that big of a deal, as long as it doesn't leak, however, that boat took a pretty hard hit to do that.

That Jacuzzi YJ pump is pretty reliable, and good for a heavy boat, but don't expect much top speed out of it, either. Keep an eye on the rpms, stock olds don't like much more than 4500 rpm. If you get more than that, you probably need a wear ring.

Always loved the sleekcrafts.


I don't see why it wouldn't work, but I'd ditch the water pump for a plate.
What hp was the cobra 460 rated at?

Lakes Only would know about cam and intakes, although I prefer single planes on jet boats.

What heads? Later Fuel injected or older carb heads? Adjustable rockers or fixed will affect cam selection.

What exhaust manifolds are on it? If they are iron, I'd ditch them too, for weight reasons, and flex plate over flywheels too.

Most 460/jets like an 850, even mostly stock.

Just my $.02


The No Wake Zone / Re: Going back together again
« on: October 28, 2020, 09:20:19 AM »
Sounds great.

Will you be at the Thanksgiving regatta?


The No Wake Zone / Re: 71 Tahiti 455 water in the Oil why now?
« on: October 28, 2020, 09:11:03 AM »
Wow, that sucks.

I'd wager to guess it's time for head gaskets. You probably don't want to hear that a rod bearing spun, so I won't say it. Chocolate milk shake doesn't lube too well.

If you can isolate the cooling system on the engine and pressure test it would be your best bet. About 18-20 psi. Logs can leak internally, so check that too.

There are guys that know a lot more about Olds than I do.

Best of luck.


Boat Racing / Re: Parker race
« on: October 28, 2020, 09:02:05 AM »
Planning on the Thanksgiving races? I'll be there, probably just Saturday.


Jet Pumps / Re: Pump confusion
« on: September 28, 2020, 06:29:37 PM »
"Didn't look bad" and measuring are two different things.
Radial (axial) .012"
Thrust (fore to aft) .010"
Condition of the leading edge of the impeller makes a difference. As well as the trailing edge, and vanes on the bowl.

I was amazed when M.P.D. detailed my impeller.


The No Wake Zone / Re: That time of year again...
« on: September 28, 2020, 06:23:22 PM »
You are always invited...
River gets low... lake is always up


Jet Pumps / Re: Pump confusion
« on: September 28, 2020, 09:07:16 AM »
Looks like all the parts are there.
Take a look at how the cable is adjusted, and get all the "up" you can get. You don't really need that much down travel.

As far as pump set up, depends on the hp you are running. Keeping the wear ring tolerances correct is usually an improvement.


The No Wake Zone / Re: That time of year again...
« on: September 28, 2020, 08:58:00 AM »
Blow me...
Boating season ends Dec. 31.
And starts Jan. 1.
Usually last time out is Thanksgiving Friday, water level permitting.
First weekend in March weather permitting. Fishing (eek!!) Thru the snowbird season.

Oldest granddaughter will be ready to ski next season.

Boat still looks great!!!


Engine Mechanical / Electrical / Re: Mid week music
« on: April 03, 2020, 10:27:53 AM »
Here is the dyno graph

Sent from my iPhone using SoCal Jet Boats mobile app

"Too much horsepower is barely enough"

Impressive numbers.

Now back to work on my Sbc...


Engine Mechanical / Electrical / Re: Mid week music
« on: April 02, 2020, 08:38:42 AM »
I always think, "why are the headers upside down on the dyno?"

Sounds awesome, any numbers to report?


Jet Pumps / Re: Berkly pump repair
« on: March 26, 2020, 08:17:04 AM »
I lost a contact number for Tim . Great guy does repairs. Anyone have his number or company

Sent from my iPhone using SoCal Jet Boats mobile app

Tim @ Place Diverter?


Engine Mechanical / Electrical / Re: Fuel Injection
« on: March 21, 2020, 09:26:47 AM »
Whos running EFI with open cooling?

Sent from my SM-G950U using SoCal Jet Boats mobile app

Most newer Mercruisers are efi, and open cooling, so it's pretty common.

Lower water temperatures are proven to make horsepower. 160 should be the upper limit, hard water and all.

That's all I got.


The Parker Strip / Re: First trip Parker/Havasu
« on: March 21, 2020, 09:19:08 AM »
Go to the lake, Parker is flowing river, not ideal for a shake down run.

Site 6 is a decent choice, just not on a weekend or busy time. Week days would be best.

Stay close to site 6 until you are sure of the boat.

Remember power steering-
No power, no steering.

Hope all goes well.


And welcome to SCJB

The No Wake Zone / Re: New Boat
« on: March 02, 2020, 12:00:08 PM »
Nothing wrong with a JC pump.
Its just not a split bowl.
You already have a diverter on it.
G bowl will fit right on. (Split bowl)
Intakes are virtually identical to the newer versions.
Same with suction housing.
Impeller to wear ring clearances will make a huge difference.
Loaders are available.
My JC pump has both a loader and a ride plate and shoe. Diverter too.

Yes there is better set-ups, but you have a solid foundation.


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