"Mercury 2Cly 30ci"

[dcrabtree]

Is there anyone out there using the 2 cly merc 30 for stock or mod outboard racing? If you are how does it perform?

[seanp3]

The Mark 30 is still being used in CMod. I can't give you a report, however. I've never used one

[sam]

The Mark 30 is still being used in CMod. I can't give you a report, however. I've never used one

Not the motor Dan's asking about.

It appears the 2 cylinder Merc 402X/35SS is only legal in D Stock

[CSR4C]

The 2 cyl 30 cu in Merc was used in C Service at on time. The motor was only produced 1 or 2 years so they are not common.
Darrell

[T Chance]

A long time ago a friend of mine, and an excellent engine builder, built a Mercury 2-cylinder 30 c.i. Pro alcohol burner. I tested it on a hydro and it had a lot of punch, but no rpm's and no top speed. Wasn't fast enough to even try racing it. I wouldn't think it would be any better in a Mod configuration.

[pops67g]

Not a fun ride

The 402 Merc had the curse of a huge flywheel. If you wanted to set up for the turn you had to back off way early because once you got them wound up they didn't want to wind down. If you had a boat you could turn wide open it might be OK, but we don't run on Nationals size courses every weekend.

[dcrabtree]

Got the info I needed,thanks.I new it was only produced for a few years but mainly was asking because the 4-cly Mark 30 like the rest of mercs old motors are becoming hard to come by and I was looking for options for C-mod.Guess I'll try the new 3-cly 30, merc is producing and see how it works in C-mod.

[mercguy]

Got the info I needed,thanks.I new it was only produced for a few years but mainly was asking because the 4-cly Mark 30 like the rest of mercs old motors are becoming hard to come by and I was looking for options for C-mod.Guess I'll try the new 3-cly 30, merc is producing and see how it works in C-mod.

I "think" the best motor to "try" in Cmod (AOF or NBRA) would be the 99-01 (not 100% sure of the years) 3cyl Johnson/Evinrude 25hp 30 cuber. I know Tim Kurcz has built one to try. The 4cyl MK30 is old, but still are lots of parts for them out there. I have my Merc MK30 Cmod for sale (Ruck machine and ported) and would trade for a VERY GOOD APBA legal Yamato 302 stocker..........

[trident]

And, please note, the 402 Merc is NOT 30 ci, its a 33...

They would truck right along, between C and D speeds, but were slow to wind up and dangerously slow to wind down. The way I could tell when my
35SS was accelerating was the the thuds got closer together... its not what you want for a Mod motor.

There actually was a Mod class for it once. I was the only one that showed up with one at the Nationals (Ravenswood, WV). Class was dead before it started. Probably just as well...

Jerry

[bh/]

..banned in C Service..?

Looks like fun. Why did they ban this class. No shortage of motors. Maybe all the lifters went on strike.

[sadiemydog1]

C-Mod

You are wasting your time and money. None of the engines proposed are legal mod -c in either NBRA or APBA. NBRA allows the Merc 25 & Yamaha 25 in c-mod if you want to try them. I have a Merc 25 that we have built. Runs really good. It ran out front at Shelbyville on Sun. Economical to build,easy to find, parts available. Very easy engine to mod allwe have done is installed a Electronic ignition,got rid of the 9 lb. fywheel,worked on the exhaust ports. Used a short aluminum center section with a Yamato 302 lower unit. Ran the same prop we used with our Yamato mod engine. On a better boat it will hard to beat. Dick Falbe has finally completed his Yamaha 25 and plans to run it next year. That engine should be a bear.
Art K

[bh/]

APBA, Cmod ?

Have the APBA mod rules been changed to allow
any [all] lower units under Yamatos. The current[?] 2007 rules state only yamato under Yamato, with modifications permitted. Merc 30 is allowed any lower unit. Can a older Konig, or Konny now be used? Any gear ratio? Any tower?
Here is the value of this web site, as this info is not available off the APBA site, at least to my blind eyes.

[Tim Weber]

Jerry,

Tell the truth. You loved the 35SS motor and it ridiculous reed cage, vibration and the huge flywheel. The only good thing about the motor was the tower and foot.

Tim

[trident]

35ss

Actually, the reed cage was kinda neat. That had to breathe better than the 4 cyl. design, and they used it on some screaming sixes...

My 35SS (402X) had the new, improved racing flywheel, which was lighter, but it was still heavy, and with those massive internal parts, it still drove like my John Deere tractor. With that crank, the only reason you needed a flywheel, other than starting, was to make the ignition work.

The only good thing I can say about these motors, is they were an easy second class on an existing boat, and once tuned, the motor was set and forget. Never had to fuss with it. Pull the rope and go...

The stock class died for lack of interest and the Mod class was stillborn. I'd say that worked out for the best. Don't need more weak classes. Particularly powered by a slug motor like this. They just weren't 'racy' to drive...

BTW, I still have one, just to keep my disgust fresh. I consider it a spare Mk 55H gearcase...

[krazy karl]

I "think" the best motor to "try" in Cmod (AOF or NBRA) would be the 99-01 (not 100% sure of the years) 3cyl Johnson/Evinrude 30hp. I know Tim Kurcz has built one to try. The 4cyl MK30 is old, but still are lots of parts for them out there. I have my Merc MK30 Cmod for sale (Ruck machine and ported) and would trade for a VERY GOOD APBA legal Yamato 302 stocker..........

There is a Mark 30 parts motor on ebay right now, pretty cheap. Search for Mark 30 and it will come up. It is in Kentucky. There is a Merc 30 running in Region 11 that runs well.