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That 986 we rent on occasion always seemed fairly quiet, but maybe that was just an improvement over the 66 series though. You wanna talk about loud? Our 1855 Ollie is LOUD, and it's an open station! I can't stand running that one without any ear plugs in, even just to move it a few feet. Of course, now it's even louder that I added a ROPS canopy on it to deflect all the noise back down at me!! I personally couldn't tell the difference betwen the straight pipe we had on it for a little while and the muffler. The pipe was a temporary fix when the manifold broke off inside the muffler at the dealer getting a clutch. Nothing they did wrong, and it would have cost a fortune for them to fix it, so I told 'em to just send 'er back as is, I'll fix the manifold. We had to do some chiseling in the mean time so I found some 3" sch. 40 pipe my dad brought home, and it fit as good as it got over what was left. Chiseled about 30-35 acres like that. I made an adapter at work out of a peice of scrap. I bored it out to fit over what was left of the manifold, then bored the rest out and turned the OD so the whole thing had about an 1/8" of side wall. I started up the 18, drove it up to the shop and left it run while I welded it on. That was for several reasons, pre and post heat, as well as keep the engine bearings lubricated so I didn't some how arc across the crank while welding, seeing as how I was basically welding right on the engine. It also kept any crap out of the turbo. It would probably be impossible to get the turbo and manifold elbow separated judging by how rusted the elbow was to the muffler, so if the turbo ever goes, so does the elbow..... Now the muffler is back on, but I really can't tell..... 
 
Donovan from Wisconsin
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