Re: Question about GGB Mufflers
 

You can weld the inside dump shut and drill an external one. I wouldn't unless I wanted louder exhaust. This far back in the exhaust I wouldn't worry about reversion. I've never had an issue. You should kill 15-20 dbs with water running in the mufflers. And they will not discolor.

Re: Question about GGB Mufflers
 

I installed them Saturday and ran the boat on the hose.

It was much quieter then I expected, but still sounded good. Kind of took the edge off.

I did remove the rubber flappers. I bet it is very quiet with them on.

Re: Question about GGB Mufflers
 

Does your water dump inside or outside the tailpipes?

Re: Question about GGB Mufflers
 

My CMI tailpipes dumped the water right at the end of the pipe. Now it mixes inside the mufflers.

Re: Question about GGB Mufflers
 

OK, thats why there so quite. The water cuts 5-10 more dbs off. I dropped over 20dbs with water in the mufflers. I'll bet your well under 90db now.

Re: Question about GGB Mufflers
 

The water realy helps quite them down. We've tried running GGB's on Stellings both wet and dry and they are amazingly quite with just a little water entering and no flappers.

Re: Question about GGB Mufflers
 

I'm thinking about getting these mufflers, how do they work? Will they work on naturally aspirated 700hp motors?

Re: Question about GGB Mufflers
 

They work great. The only time I've seen a problem was on 1500HP Blower motors.

Re: Question about GGB Mufflers
 

zt260, what was the deal on those blower motors? I heard about that problem and it got us worried becuase we put a few on 1500hp mills too. We never saw a problem and believe me, with those mills I was concerned!

The 700hp n/a motors will work just fine. We've noticed the low end picks up a bit on the bigger hp n/a motors and GGB's.

Re: Question about GGB Mufflers
 

Lofty,

Can you elaborate on this? I have 510 c.i. 645 h.p. Sterlings. Are you suggesting I will see improvement in low-end torque with the GGB's installed?

Thanks,

Chris