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double duce donzi,

I replaced my rubrail on my 1999 22ZX the insert and the plastic frame are available from West Marine in all the colors they should have a catalogue you can take home. Same...

The choice between Edelbrock and Holley is one that Mercury faced also. The Edelbrock carburator was designed by Carter in the 1950s then bought up by Webber of Italy. MerCruiser used the 750 cfm...

Markdon,

If you haven't figured this one out yet here is my experience. My 1999 22ZX used two split hinges on the back of the hatch and a screw actuated electric lift on the front. On my 22zx...

Maybe this is the last shot at this thread but it came to me that I read about Smokey Yunick in his tuning of the BBC was working on any performance issues related to the water coolant flow in the...

There used to be a hot rod item for variable cam timing called the VariCam. Basically a spring loaded gear that retarded the cam. Was popular in the 1960's. The old BBC which used a cam driven...

The thermostat in the automotive engine is a temperature regulating device. The engine cools and circulates the coolant with the thermostat closed. When the thermostat opens the radiator or lake...

Ghost,

Well Magnesium anodes on the drive and aluminum anodes on the K-Planes, go figure!

You were right, I never thought to check the continuity on the Mercathode power terminal. When the...

VetteLT193,

Thanks for the reply - seems the Mercathode is not highly discussed - local dealer said the only available sacrificial anodes for the K-Planes were Aluminum and were for brackish...

The Mercathode anti corrosion system used on stern drives. Is anyone familiar with the Magnesium anodes that are optional for use in fresh water? Are there any issues that differ from the Zinc...

The Z33 and the ZX33 - These were two completely different hulls production numbers for both hulls should be very small. For the most part the ZX featured step hull construction and updated styling....

Mercury Fuel Injection uses a MAPS sensor in the intake manifold to determine Manifold Air Pressure - this would record different manifold pressure at altitude than at seal level. Some of these...

Ryan,

The 22zx came with a base engine 454 BBC at 310 horsepower and later the SBC at about the same power.

Second level engine was a 454 BBC at around 380 horsepower and later a 496 with about...

Ryan,

I also have a 22ZX which I changed out the 454 for a 502. The basic simplest rule for go faster is "there is no substitue for cubic inches." A used 502 or 496 is the quickest fastest way...

Champ,

The vent nipple on the side of your float bowl which you talk about on your truck AFB is to attach to a charcoal canister. This is a 1970 era automotive anti pollution addaptation to the...

Carl,

My 22ZX has similar function - when it bounces off of full its time to consider the next fuel stop. In fact last time I saw you in the St. Clair River I was on a slow cruise looking for...

Reversole,

Porshe mechanic - come on - 4bbl is the "sine qua non" of performance.

The Holley 4150 was made in increasingly larger sizes from the small 500 to 850 cfm and larger. Some had...

Reversole,

Holley 2bbl carbs for performance were generally the 2300 Series which is half of the famous 4150 Holley 4bbl carb. Holley also made a 2200 series carb which is entirely different non...

Bartxfire,

Not a lot of 22ZX came with the Merc K-plane - it is listed as an option in the catalogue and standard on the Daytona models.

I added the set to my 22ZX when I upgraded to the 502MAG...

gcarter comment on the pitot tube - (speedometer tube) - can be worth looking into and a strange one. Put the boat in dry and the tube is empty no leak, come back in from running tube is full of...

Jrockin,

Great looking boat! Love the paint! Definately got the wow factor of victory graphics.

I have put quite a bit of time on the 22ZX and always followed the rule about the positive trim....

McKillop - I see by your masthead that you have a 22ZX. This issue of trim limiter blocks is important. My 22ZX has a warning decal under the hatch not to operate the boat without trim limiters in...

JayZ,

You might think that few change automotive steering why would there be an option on boats. Well the steering comes in a couple of levels of quality.

#1 - Basic cable steering which is...

I used to be the editor of the Antique Outboarder Magazine of the national Antique Outboard Motor Club. I have several antique outboard hulls from the 1920's. I believe Crandall Craft made a runabout...

Even though headers are almost universally used on performance engines for exhaust the use of "ram tuned" intake systems with carburators is more infrequent. Elderbrock was very sucessful with their...

tnc110,

Donzi's usual sound system selection was a Clarion radio package with two or four speakers.

I am not really that familiar with the 25ZX but I can tell you the 22ZX had only the 4...