Name this pipe

[anthony_marquart]

Anyone know what this is? it's a 45 pipe pretty sure.

 

[HOTWATER]

Looks like an Irwin...may even be a .20 size...

Others may know for sure...

-Kent

 

[dave roach]

Thats a Irwin pipe.

Dave Roach

 

[anthony_marquart]

it's huge for a 20,.. would this be a good 40 rigger or sp40 pipe?

 

[HOTWATER]

it's huge for a 20,.. would this be a good 40 rigger or sp40 pipe?

You are prob. right...if I remember correctly, new .20 size Irwin pipes are around 9 1/2" from beginning of pipe to stinger tip....

 

[steve wood]

it's huge for a 20,.. would this be a good 40 rigger or sp40 pipe?

no

 

[anthony_marquart]

I really don't think this is a 21 pipe.. it's way bigger than any of my .21 pipes.. it's real close to the same size as my AA45 pipe,.

Steve,.. why do you say no good? Got to be good for something..

 

[Marty Davis]

Anyone know what this is? it's a 45 pipe pretty sure.

Yes, it is an Irwin pipe. And in fact is a very good pipe.

 

[shoboat]

Anthony,

Good Irwin 45 Nitro pipe!

You may want to change the stinger size a little bit.

9" to 9.5" is a good setting for your 45 motor.

Thanks,

Mark Sholund

231-590-3023

 

[anthony_marquart]

reduced stinger? should I add length to the stinger? what is a good ID to try?

 

[steve wood]

not up to the aa parabolic or the cmb nitro pipes

 

[anthony_marquart]

Maybe I don't have the setup right but the AA pipe isn't working that well for me..

 

[Norm Doerr]

Irwin 40 pipes start with 10.3.75"- 10.125 " plug to weld Maybe even start at 10.5" That Going from memory I would keep the stinger between .350" to .380" .

 

[steve wood]

Maybe I don't have the setup right but the AA pipe isn't working that well for me..

a pitched up1657 should run mid to upper 80's

 

[anthony_marquart]

what length on the pipe Mr Wood?

 

[Chris Wood]

depending on pipe 9 - 9 1/2

 

[anthony_marquart]

will running pipe too short reduce speed? or will it increase until you cannot launch? I was running it at 8.875,.. to the front edge of the seam on the AA,.. and dog slow.. prop was questionable also..

 

[Marty Davis]

will running pipe too short reduce speed? or will it increase until you cannot launch? I was running it at 8.875,.. to the front edge of the seam on the AA,.. and dog slow.. prop was questionable also..

What happens is the engine can not make enough HP at the lower end of the range and the boat will not get up on the pipe with a big prop. The engine will get hot because it is TRYING to get up and can't. Kind of like adding too much head clearance and the engine then has not enough HP to do its job. You can see this with a .21 engine even better than a 45.

 

[anthony_marquart]

So, if I had the boat running like 67 mph, and was able to launch ok,.. it's not slow do too a pipe being too short?

 

[dwilfong]

what did it sound like?

was it reving good?