MAC tuned pipes

[griz2575]

Does anyone run macs tuned pipes on sport 40's?

 

[Ray Sametz]

Does anyone run macs tuned pipes on sport 40's?

PM (flascaleboater) here on IW, he's had success with the 40 MAC pipe?? B) B)

 

[Michael Costanzo]

hi, i have ran macs pipes for a long time with sport 40's and riggers with good succsess.mike.

 

[MIKE HAYNES]

Does anyone run macs tuned pipes on sport 40's?

i have a pt sprt 40 with a cmb rs 45 and have had a andy brown pipe 45xt in it and did not like it,put in a mac pipe,what differnce,love it.also have the same motor & pipe in my seaducer mono,love the combination..just my 2 cents.

 

[larcor69]

Also depends on what engine your running!!

 

[Dasboatman]

Griz,

We have had success with the MACS muffled Marine pipe on Sport 40s with CMB RS also. Try 10 3/4" from cylinder center to high point of pipe - start long and slowly shorten pipe. It's a lot easier to trim slowly then add length after cutting too short. The MACS Marine 7.5 works well with for us on the CMB RS. I have even played with some of the MACs Aero pipes (7.5 and 8.5) on Sport 40s, but they are generally too short for boats and require a extension to the header. Consider Rum Racing (www.rumracingproducts.co) tip muffler on the non muffled pipes. CHEERS !!! Bob Johnson

 

[griz2575]

I am running a K&B engine. Thanks

 

[Scott Schneider]

I am running a K&B engine. Thanks

With .45 / 7.5cc marine engines the MAC 6.5cc and 8.5cc long belly aircraft pipes work very well.

A little tweaking with smaller outlet stinger sizes really wakes em up

 

[griz2575]

Awesome thanks

 

[Big roy]

Hello, I have a OPS .45 in my sport 40 that I just put a mac pipe on and all I can say is that boat came alive for me. I am also running the same pipe in my roadrunner rigger with a gold head cmb .45 and both boats and engines love it.

Just my .02

Roy

 

[griz2575]

I am new to boats so I am lookin for everyone's .02.

 

[shoboat]

Griz,

They work very well once you get the stinger sized correctly.

They tend to run a little longer than other pipes on the market.

The west coast guys love them.

Have Fun Testing Pipes,

Mark Sholund

 

[Big roy]

Mark, what do you mean about the stinger end size? is the stock pipe too big in diamater or length? where should it be?

Roy

 

[Rudy Formanek]

MACS Products tuned pipes:

Many people on the West Coast are running Macs Products AIRPLANE 60 tuned pipe on thier Picco 45's (blackhead, silver head, bluehead and P-45). Not to be confused with the Macs Products 7.5 MARINE tuned pipe. If you are in a ditrict where the competition does not force you into a crawl start, I would think a 7.5 MARINE tuned pipe might be a good choice. West Coasters with audio clocks and crawl starts to gain lane 1 seem to prefer the 60 size airplane pipe. Of course one will see a smattering of just about every pipe on a few boats. The 60 size airplane pipe appears to the untrained eye like a 7.5 airplane pipe. The angles are the same but the 60 size has a max dia of 1 5/8 and a large flat section and the 7.5 airplane pipe has a max dia of 1 1/2 and a large flat section, the lead-in pipe and stinger sizes are bigger on the 60 size. The 8.5 is basically a 60 airplane without a flat section and the 6.5 is a 7.5 without the flat section. Go to the site MACSPRO.com to see pictures. Rudy