Pipe length for ops .21

[Krusty 181]

Hi all , can someone tell me a good starting point for pipe length for an OPS 21 in a mono ?

does around 8 " sound right ???

i just cant remember

Thanks

Andrew

 

[Chris Wood]

yep you got it

chris

 

[CMBrunner]

Hi all , can someone tell me a good starting point for pipe length for an OPS 21 in a mono ?does around 8 " sound right ???

i just cant remember

Thanks

Andrew

Start at 8.25"......8" can get a little fussy with some setups.

Not saying that you won't end up at 8" (or less), but better to

start a little longer.

 

[Topfuel666]

Hi all , can someone tell me a good starting point for pipe length for an OPS 21 in a mono ?does around 8 " sound right ???

i just cant remember

Thanks

Andrew

Start at 8.25"......8" can get a little fussy with some setups.

Not saying that you won't end up at 8" (or less), but better to

start a little longer.

Same recommendation for a CMB 21RS in a rigger? Using a 3280 pipe.

Thanks.

Bill

 

[aaron alberico]

Bill,

for your 21 rigger i would start at about 7 3\4 and work your way down

from there, i'm running about 7-1\4 in my 21 rigger

awsome RPM'S

regards Aaron

 

[Krusty 181]

Thanks again all who contributed

Andrew

 

[mark voorhies]

Bill,for your 21 rigger i would start at about 7 3\4 and work your way down

from there, i'm running about 7-1\4 in my 21 rigger

awsome RPM'S

regards Aaron

Aaron, thats a great set-up you have goin there, must be a light hull and super prop,

have never been able too run my Nova with OPS 3280 at less than 7 7/8" on a 7.25 Lb. hull.

 

[aaron alberico]

Mark,

nothing super,

nice prop, short pipe and awsome RPM'S

boat weight is just under 4lb's

 

[jetpack]

Is this a rear exhaust, because I have a side exhaust and never run one yet. Is there a good reference from the stock manifold for that one?

 

[Krusty 181]

Hi Jetpack , the one im running is a side exhaust , which i will be trying a tad under 8" (the pipe i have came off a front exhaust motor with a longer header) if it works i wont have to get another pipe !

ill let you know how it goes

Andrew

 

[Tofastformellow]

Mark,nothing super,

nice prop, short pipe and awsome RPM'S

boat weight is just under 4lb's

nothing super.. LOL's

that thing is paris hilton weight .

Jase

 

[Ray Sametz]

Mark,nothing super,

nice prop, short pipe and awsome RPM'S

boat weight is just under 4lb's

nothing super.. LOL's

that thing is paris hilton weight .

Jase

And it dosen't blow.

 

[aaron alberico]

Jase.

my 21 rigger comes in at 3.8pounds, most people i have talked

with that is a average weight for a 21 oval rigger

now my SAW 21 boat comes in at 2.4 pounds

now that's light

will see what happen's at the SAW trails this weekend

regards Aaron

 

[Tofastformellow]

Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol: Video ... :lol:

Can i Say it again ...??

I want to see some fassssssst boats from oz.

Jason

 

[mark voorhies]

Jase.my 21 rigger comes in at 3.8pounds, most people i have talked

with that is a average weight for a 21 oval rigger

now my SAW 21 boat comes in at 2.4 pounds

now that's light

will see what happen's at the SAW trails this weekend

regards Aaron

Aaron, good luck with your rigger @ 3.8 lbs., I have no doubt you can run it that light,

like to see how you build it that light, and how your passes turn out? For me ,I'm lookin

at just under 6lbs. for next year. Thats good for heat racin in my mind.

 

[Chris Wood]

My boat is 3lbs 8oz as well.

chris