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thanks gentlemen for your replies I hope nova rossi will bring out a bolt on carby set up . I also think that this engine vibrates more than any other engine I have use I had over 8 ops eng and about 16 cmb's and have run them all at high rpm.

Hi all this is a question to anyone who is running a new nova rossi 91 DD is anyone having a problem with the carby working loose and slipping out? I have tried installing it with lock tight, the screw clamp is tight but still works loose. Any advise or help will be greatly appreciated.

Thanks everyone

Hi all can anyone explain the difference on running a pipe hot compared to a pipe that is running cool , which is better hot or cool. Does a black painted pipe perform better than a polished pipe ? thanks in advance

Hi all need help has anyone tried using a mac 1190 15cc pipe on a cmb rs91? the pipe looks the same as the 1395 pipe but smaller in dia. Any advise would be helpfull many thanks mark.

Very funny Mike! Right now everybody is beating me! I did double check the pressure fitting and have pretty much ruled out motor problems since the "backup" motor I put in it (Perry Walters') had the same result. Hi Don I had the same problem with 67 riggger it is water entery into the hull...

Hi guys I am new at this forum need help I am wanting to build a 1/8 scale boat looking at 1964 - 1971 miss madison who would make this boat in fibre glass, any info would help eg web sights any one I can email also finding it hard to find paint codes regards mark

Is any one using coolpower multi vis purple if so is it a good oil for marine engines, running with 55 % nitro?