40/44 tech and buy sell swap

[sam]

None of the Quincy or Stevens filler blocks I have are water cooled and none show any wear although some show extensive use (carbon build up).

Maybe the expansion/wear problem is limited to the Parker set up.

[Guest]

Filler Block

Hi Sam,
The filler block will not wear but it does bother the pistons a bit. The expanding filler block will distort the area around the exhaust ports. Be it a second order effect every little trick to keep the engine true when running it to the limit adds up performance wise.
Alan

[sam]

I am not able to measure any out of round wear on any of my pistons either.

Let's say the jury is still out on whether a water cooled filler block is needed.

There is an advantage to running a dry filler block. With a dry filler block, you can "swiss cheese" and under cut the filler block to match the cylinder block on the exhaust side, reducing the weight by quite a bit. I'll add pictures of both styles of filler blocks tonight.


I know you are not yet a fan of cutting as much weight and height as possible from these motors and the 6's, but its one of the real major differences when you are on the race course. It doesn't add any top speed, but it improves handling in corners and traffic ... and can increase cornering speed (and line thru the corner at the same speed) dramatically.

[Guest]

Mercury $$ MOD well really a 44FE

I have a number of photos of the TX444DK engine we built a couple years ago. Doug Kay created this very unique one a kind engine. His machining and design capabilities are second to none. The engine was an experment to see how much we could get out of a Mercury 44. Hope everyone enjoys the photos It will take about 4 posts to show what we did. The goal was to build a 44 that could get into the 90's and turn 9,000 RPM doing it. Note the oil pump between the fuel pumps. This is used to inject oil into the old reed block to help with the high RPM. One other thing that we have done is selected a Mercury magneto for our ignition system. We are able to build and test mags that run to 10,000 RPM without an issue. If you look closely the mag hanger has been moved 15 degrees aft to allow for carb clearance. By using a mag we save a little weight, don't have to deal with a battery and if it goes south we have spares to put right in place. This goes a little backwards to todays thought process but we must remember the higher RPM you spin them the hotter the spark. Also magnetos are cheep and easy to repair. I can post photos of the mag test rig if anyone wants to see it. They can be built quite easily.
Alan

[Guest]

Tx444dk

More photos

[Guest]

Tx444DK

and more photos

[Guest]

Tx444dk

Last of the engine photos. The boat running can be found on YouTube by looking for Mercury Outboard MOD. One thing that we have to remember is that this engine was built with used parts. The only things that were new were the 4 carbs, bearings, rings, stacks, and gaskets. For this season Doug Kay has built a new C & D MOD engine out of used parts. I will post some photos when they are completed. I would also like to point out that the boat was built by Dale Ropp for Harry Brinkman. I hope one day Dale will build one morew white hydro that is more suited to the 75-H MOD engine that Harry had started and we finished.

Alan

[sam]

One of the coolest projects ever! Cleverly thought out and executed.

Alan, do you recall what the reed cages came out of?

[blueskyracer]

Alan, since this was a while ago did you guys reach your goals for speed?

[Guest]

Tx444dk

Hi Sam,
The the engine started as a scrap 44 Merc and if I remember correcly the engine was a 58A. The original read cages are stock and sealed off to stuff the crankcase. The new reeds came from a Polaris 700 cc snowmobile.
Alan

[Guest]

Tx444dk

Hi Mike,
We have the boat running in the low 90's now. The rings are seated and compression is up. This year we will be doing prop and boat work. Right now Ron Hill is doing a set of 5 four blade props for me. Also we will run the engine on the smaller boat to see what we get top end.
Alan

[sam]

Here's the Stevens light weight filler block for a 6, same thing can be done for a 40/44. This one came from Charlie Wicks' (yes, the same Charlie Wicks as WIX air and oil filters) F hydro stuff.

Some of the holes go all the way thru, most do not.
I'll put up the undercut pic tomorrow

[crankbearing]

Thought I would mention that I will have NEW Brinkman mod towers probably by the end of next week maybe sooner. You can buy them unmachined including the lower unit adapter plate or we will machine em for your lower unit and powerhead in Canada. Doug Kay will machine them in the US you supply your clamp assembly. I will have pricing by this coming Friday. I do not want to speculate but an unmachined set should be under $200 plus shipping. centers will be indexed and the holes for the driveshaft are present. These will still have Harry's name on the side of them just like the originals.

Material is tenzaloy 713 Military Marine Spec, Self Annealing, No heat treating required, easier machining, nicer to polish, I have had Doug Overbury P. Eng, the person that got the solid model drawings completed for the 44xs reman housing project, look over the material specs and he was completely satisfied. if you would like to check out the specs here is a link to it's info. I have ordered 10 in the first run. If there is a demand I will make more. 5 of these 10 are spoken for currently. Will post pics as soon as I have em.
The set will look just like Alan's picture a few posts back.

http://www.abbottworkholding.com/tenzaloy.php

Thanks

[Guest]

Brinkman tower

The Brinkman tower is an very good way to go when building a MOD engine. I have a number of them under engines and they are outstanding strength wise. When I bought all of the parts and engines from Harry he had nine towers unfinished and one under an OMC 3 holer. I sold 3 towers and keeping one unfinished for history sake, the rest are under 30/40/44/60 cubic inch Mercurry engines. The tower mates well to the Mercury clamp bracket and will fit most any powerhead. The photo below shows one of the brinkman towers we modified to use an OMC 45SST lower unit that we run under a 75-H MOD engine.
All the machining was accomplished by Doug Kay. Note the welding of the new section on the tower to handle the OMC unit. The tower can be adapted to other lower units also. I have to point out that I am a fan of having a water pumps in the lower units. Give up a little HP but it sure is easier on parts and helps stabilize the engine temperature.

Alan

[Guest]

Filler Block

Here are some photos of the water cooled unit that Doug Kay made for the 6 cylinder MOD engine. Actually the water cooling of the unit also makes it lighter when running. The same process and technique can be used on the 4 cylinder engines. A simpler method we have also used is to machine the main channels and passage holes and then weld the cover on to seal the unit. Both sides of the filler block look the same so their is quite a bit of material removed. We like the parker stacks because they more closely match the Merc ports with their oval configuration. It also allows for more material removal.
Alan