OPS 15cc .90 Blackhead pipe recommendation

[ThomasMoroney]

The tried and true blast from the past! Pushing an Octura 1662, on a mongoose.

-What pipe currently available on the market, would give it the most bang for the buck? I see the AA 80/90 parabolic from double ace, also read he has a 90+ not listed too? The 90DD and 90DD+ from novarossi.us. The ops muffled and non muffled from rbmods, and gotnitroonline when they get back up and running. Any others are welcomed suggestions.

-Suggested length would be nice too!

-Also will the pipe need a muffler to be NAMBA legal? What muffler and where to buy?

-And the last item to be touched on. Can this pipe also double as a 26 to 30cc zenoah pipe in the future?

PS: Hello! As a new member i want to formally say hello, as this is my first true post/thread to the community!

 

[David Ashcroft]

Charles Siler is your man..

 

[NITROSNIFER]

Al's 80 pipe is fantastic on the OPS 90. Running one on my eagle and JAE with OPS 90's in them. I started them at 11 3/4" pulling 1667, H50 and H31with ease. all props have at minimum 6.5" pitch

 

[Ray Sametz]

Tom ran the same setup with a 90 muffled MAC pipe. PM me your addy, I'll send you the pipe to try, if it don't work out just send it back.

 

[PaulHail]

Charlies ran every pipe you can imagine on the OPS 90, so he's the one to ask.

No, the pipe won't be appropriate on a gas engine, the volume will be too small, the stinger will be too small and the length will be wrong as the 15cc's turn higher rpm's than the gas engines.

 

[ThomasMoroney]

Thanks for the replies! I will pm Charlies and ask him to post his answer on this thread for all to see. Ray you will have a pm shortly. This build has turned into more of a restoration, than a get in the water quick build that i planned. This boat needed love in every corner. I hope to find the time to compile the few photos!

 

[charles siler]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

 

[ThomasMoroney]

Thanks for the reply Charles! Wow the blackhead fleet! Interesting to see many different pipes in use. I guess you see similar performance across the board?

Also do you have a contact for parts for the OPS? I know gotnitroonline has parts but is currently under going a change in ownership. It would be good to know I could get more life out of it when something lets go or she decides it is time... Well fingers crossed i get a good first season from her!

 

[charles siler]

Thanks for the reply Charles! Wow the blackhead fleet! Interesting to see many different pipes in use. I guess you see similar performance across the board?

Also do you have a contact for parts for the OPS? I know gotnitroonline has parts but is currently under going a change in ownership. It would be good to know I could get more life out of it when something lets go or she decides it is time... Well fingers crossed i get a good first season from her!

Ya they are good in there own rights I favor the Muck pipe the most on the OPS 90 it fits me the best with the motor modds. As far as parts I relied heavily on Dave at got nitro for parts. Until his daughter or whoever takes over it’s pretty much up to the Manta dealership in England although I haven’t dealt with them directly. The Canadians sold out of the franchise a couple of years ago. I bought $2000 in parts from Dave so I haven’t had cause to chase parts at all and a lot of new part are different and better than the old ones cranks blocks rods extra. So if you need anything I may have it in old and new plus 5 spare motors if anyone is interested most are modded.
Thanks Charles

 

[Michael Costanzo]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

 

[charles siler]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

They are very different .

 

[Michael Costanzo]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

They are very different .

vol size,stinger size,what are the differences? thanks.

 

[ThomasMoroney]

Who sells/makes the Muck pipe?

 

[charles siler]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

They are very different .

vol size,stinger size,what are the differences? thanks.

 

[charles siler]

Who sells/makes the Muck pipe?

Not sure anymore there are a lot of them around its just a matter of asking I got the black muffled one from Don Ferrette on here .

 

[Michael Costanzo]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

They are very different .

vol size,stinger size,what are the differences? thanks.

thank you,sorry, one more size..Dia.@ BAND. i found a pipe in my pipe box that is real close but i know for a fact it is a OPS pipe just from the first step up of the head pipe and no welded seam on band,thank smike.

 

[charles siler]

Ok guys my #1 pic is the Muck pipe #2 AA 67 parabolic short stinger #3 Andy Brown black 67 pipe #4 Andy Brown 80 parabolic pipe. With a modded motor 11 1/2 to 11 5/8 1667 5 to 7 cup . I dont like H50s Blades are to week lost the transoms H31s is a really good prop mate the best for the OPS 90 . 2717 2719s are good also .

the Muck pipe looks very much like the Rossi .80 pipe i have run on my .91 Vac motor.

They are very different .

vol size,stinger size,what are the differences? thanks.

thank you,sorry, one more size..Dia.@ BAND. i found a pipe in my pipe box that is real close but i know for a fact it is a OPS pipe just from the first step up of the head pipe and no welded seam on band,thank smike.

2 1/4”