"Mercury 2Cly 30ci"

[sadiemydog1]

Nbra C-mods

THe legal engines in NBRA for C- MOD are Yamato 102-202-302,Merc 25, Yamaha 25, Merc 30 4cyl. Chrysler 302 304 is in the book but their is a proposal on the ballot to eliminate it. No parts available anymore. There is a proposal on the ballot to a allow the OMC 31.4 cu. Really don`t think it will pass. If you have questions about these engines and what can be done. Contact me I am the TECH VP.
ART K

[sadiemydog1]

Nbra C-mods

THe legal engines in NBRA for C- MOD are Yamato 102-202-302,Merc 25, Yamaha 25, Merc 30 4cyl. Chrysler 302 304 is in the book but their is a proposal on the ballot to eliminate it. No parts available anymore. There is a proposal on the ballot to a allow the OMC 31.4 cu. Really don`t think it will pass. If you have questions about these engines and what can be done. Contact me I am the TECH VP.
ART K

[STEVE FRENCH]

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.

Interest'n....is Merc build'n it or is it a import in Merc colors?

19P

[bh/]

Cmod

Steve; -if u get over to ON this summer you may run into this Cmod prototype/probationary[?] motor. It is a 30" Yamaha triple, maybe the same as the Yamaha 25 allowed in the NBRA rules

[STEVE FRENCH]

WOW Brian!!!!

Very nice!...Yours??....tell us about it.

19P

[sadiemydog1]

Yamaha

The 25 Yamaha allowed in C-mod NBRA is the 2 cyl. 24.6 ci. engine. The engine pictured will absolutely kill the engines allowed in c-mod today. It was made legal in the D class with any lower unit, exh, or ignition. I tryed to locate one but found out there were not that many sold. And when I did find one they absolutely wanted too much for it. For your info our D class is not the same as APBA D-mod It allows the old 40 ci. Merc in mod form The stock Tohatsu M50D2 Merc.44xs and the Yamaha 30 as described. Our E-mod class is identical to APBA Mod-d. Would like to hear how the Yamaha performs. Looks like you did a great job of adapting it to to the racing lower unit .Is it a probationary legal engine in APBA Mod division or what?
Art K

[ddalton]

C-mod Yamaha

This is my motor.it is a 1996 stock 30hp 3 cyl.will be on the water in 08.It is 498cc. In 07 we (CBF SORC ) mod division made it ok to use in Canada...It is 30-35 hp stock & I don:t think it ( will kill) a 40-45 hp mod yamato.C class (mod) needs to let stuff like this run!!!they make a25 hp 3 cyl. also ...same motor...OMC has a 25 hp 3cyl. under 30 cu. in.I will be running it STOCK. with no pipes.& won"t get any points JFF (just for fun ) racing I now run a 60 hp omc twin in D mod. for 3years now & had the same thing told to me ( it"s a looper & will eat those 44 mercs!!!Not so ,they spend lots of $ to make them go fast ...I don"t & we have had some great racing!!!built another twin for a friend & it work great also ( he beats me )I think Mod needs to loosen up there rules & let other fishen engines run!!! like feh/fer rules.Parts for these motors are easy to get & a lot cheaper!!!anyway I like doing it differently!!!!DD

[jeff55v]

It is a 30" Yamaha triple

Yer gettin' warmer...

why not just get a 42.5 triple?

[bh/]

mods

The 25 Yamaha allowed in C-mod NBRA is the 2 cyl. 24.6 ci. engine. The engine pictured will absolutely kill the engines allowed in c-mod today. Art K

Art; -in NBRA I assume u allow pipes, open or closed. APBA and CBF [usually] will allow new mod motors only with closed pipes, or as in the case of this 30" triple, dumping it down thru the stock manifold into a down tube. I doubt it will eat a good 102 mod
Dave has also built a pair OMC looper twins, with stock carbs and exhaust, that are legal CBF Dmod motors, and are competitive with , but not running away from the 44" Mercs. Possibly the stock exhaust plate changes the equation some what, and makes for friendlier neighbours at the lake

[sadiemydog1]

Yamaha

Yes we do allow your choice of exhaust. And believe me NBRA is completely in favor of new engines. The 25 2 cyl Merc that I built has an expansion chamber. It is more than competitive with the Yamatos & Merc 4cyl. The Yamaha 2cyl. 25 that I mentioned. is a looper with 2 carbs and should be a bear. The engines you mentioned are still available in Canada I believe. Very hard to find south of the border. If you guys a have source that we could use. I would love that info.
Art K

[STEVE FRENCH]

Art; -in NBRA I assume u allow pipes, open or closed. APBA and CBF [usually] will allow new mod motors only with closed pipes, or as in the case of this 30" triple, dumping it down thru the stock manifold into a down tube. I doubt it will eat a good 102 mod
Dave has also built a pair OMC looper twins, with stock carbs and exhaust, that are legal CBF Dmod motors, and are competitive with , but not running away from the 44" Mercs. Possibly the stock exhaust plate changes the equation some what, and makes for friendlier neighbours at the lake

Brian, How is the twin (stock) OMC speed/performance with the D-MODS?......I don't want to start a fist-fight here.....but I do like the Idea of a "D" I can carry myself....and possibly run on same rig as the C-MOD/D-STOCK Merc?....Or are they stuck in the "E-thir" between D-MOD (too fast) and FE?

Any other info on the 3-cyl Mercs?

19P

19P

[bh/]

omc twins

Brian, How is the twin (stock) OMC speed/performance with the D-MODS?......I don't want to start a fist-fight here.....but I do like the Idea of a "D" I can carry myself....and possibly run on same rig as the C-MOD/D-STOCK Merc?....Or are they stuck in the "E-thir" between D-MOD (too fast) and FE? 19P

Dave Dalton has run his twin in Dmod now two seasons, and Rolf Fletje one. On the short course at Carleton Place this summer Rolf won in Dmod. I would not say that either are totally dialed in, but they seem to be doing what we expected, ie; more grunt than the 44" Merc, but a good 44 will out run one. These are really just made up 45SS motors, a OMC 55-60hp twin on whatever mid and boot u choose. Both of these are on modified 302s.
Dave has a Pugh, Rolf a Hemp. I doubt u would ever get these approved in APBA, as many drivers have much invested in their 44mods. It got approved in CBF because the class was dwindling[we only get full fields at Waterford when u guys come over] its expensive to build a new 44mod, and the noise issue is a factor. These units are relatively modern, as they were produced into the 90s[?]. If the power head stays stock and with the stock exhaust manifold , I do not think they would ever beat a good Merc. If one did I suspect we would just ballast them up a few pounds. The 497s only became dominant in FEH with the advent of the Runne exhaust, and other three into one systems. On a stock exhaust plate, a good 44" would run with them.

[Mark 32]

Dave Dalton has run his twin in Dmod now two seasons, and Rolf Fletje one. On the short course at Carleton Place this summer Rolf won in Dmod. I would not say that either are totally dialed in, but they seem to be doing what we expected, ie; more grunt than the 44" Merc, but a good 44 will out run one. These are really just made up 45SS motors, a OMC 55-60hp twin on whatever mid and boot u choose. Both of these are on modified 302s.
Dave has a Pugh, Rolf a Hemp. I doubt u would ever get these approved in APBA, as many drivers have much invested in their 44mods. It got approved in CBF because the class was dwindling[we only get full fields at Waterford when u guys come over] its expensive to build a new 44mod, and the noise issue is a factor. These units are relatively modern, as they were produced into the 90s[?]. If the power head stays stock and with the stock exhaust manifold , I do not think they would ever beat a good Merc. If one did I suspect we would just ballast them up a few pounds. The 497s only became dominant in FEH with the advent of the Runne exhaust, and other three into one systems. On a stock exhaust plate, a good 44" would run with them.

Hey Brian, Dave HAD a pugh!
Well I suppose he still has half of it

[dcrabtree]

So your telling me all new production outboards on the market today are not legal for racing unless it has had prior approval even though its still a,lets say 25 merc or 30 merc? Unless your in APBA and then you have to run them just as they are in mod classes,correct?It wouldn't matter anyways the new 25 and 30 3cly merc is 32.1ci so I don't think it will be allowed anywhere anytime soon.

[pops67g]

Most new motors aren't worth racing

With most new production motors being four-strokes I'm pretty sure most of us don't want to go there. There are so many issues at odds with the type of racing we do that I surely want nothing to do with them. Heck, the extra weight alone would have water coming over the transom even without me in the boat.