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Message started by ghstrdr110 on 05/07/09 at 19:20:53

Title: Exhaust question
Post by ghstrdr110 on 05/07/09 at 19:20:53

I see that some people are running screaming eagle exhaust on their thumpers. What years am I looking for? What size is pipe? I looked at several websites and there is so many different types for different models. Also, can you purchase them separately or only as a pair?

Thanks,

Ghstrdr110

Title: Re: Exhaust question
Post by marshall13 on 05/07/09 at 22:40:20

Dyna muffler install
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1219766006/0#0

Dyna exhaust
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1231909013/1#1

Dyna muffler question (w/ pics)
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1224726609/14#14

Dyna (Screaming Eagle II)
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1216739746/11#11

Dyna installed
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1215231904/2#2

Getting Dyna-sore
http://suzukisavage.com/cgi-bin/YaBB.pl?action=search2

Which Dyna muffler
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1209384138/4#4

Dyna sound (under sound files)
http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1151331237

courtesy of Diamond Jim on the "drill the packing" thread...

Title: Re: Exhaust question
Post by BurnPgh on 05/09/09 at 23:39:10

Looking for a dyna model with rail type mounts. I got mine brand new on ebay for $25. Its pretty freakin loud. At idle its tame but once you get past 1/4 throttle or so it get progressively louder. I work nights and its loud enough that Ive been cautious and keep the revs low as I come home. But I also tend to leave again (say..between 1-5am) so Im sure Ive pissed off some light sleepers in the neighborhood. If you have a normal schedule I think you'll be fine.

Title: Re: Exhaust question
Post by diamond jim on 05/10/09 at 06:08:56

Here's an option for having the benefit of both freer flowing exhaust and the ability to reduce the volume on the fly in certain circumstances. Put a butterfly in the exhaust path and make it remotely operated. With the HD mufflers this works when using the extension between the header and muffler.

http://i255.photobucket.com/albums/hh128/russ_diamond_jim/1-28.jpg
http://i255.photobucket.com/albums/hh128/russ_diamond_jim/S4021913.jpg

Title: Re: Exhaust question
Post by marshall13 on 05/10/09 at 10:40:36

Jim, i gotta tell you, that is about as impressive a piece of shadetree blacksmith work as ive ever seen... a "county mountie" valve.... street racers used to do about the same, only the butterfly would choose either a path to mufflers, or an open leg of a y-pipe... whisper quiet for the challenge, open and uncivilized for the run.... might stll be able to find them on jc whitney...

Title: Re: Exhaust question
Post by bill67 on 05/10/09 at 11:59:42

They were called cutouts around here.

Title: Re: Exhaust question
Post by diamond jim on 05/10/09 at 14:33:38

282437362D2429297476450 wrote:

Thanks. I use it around town in stoplight traffic where I often get a cop behind me waiting on a red light. My bike isn't obnoxiously loud and pretty much blends in with most harleys around here. But the sound can ricocchet off of the downtown buildings and make it sound louder than it really is.

I made a different baffle that is only 5" long that sits just in front of the butterfly. If open drag pipe on a volume scale is a 10 and stock muffler is a 1, my pipe with the butterfly open is probably a 7-8 and with the butterfly closed maybe a 3.

I mounted the cable here:
http://i255.photobucket.com/albums/hh128/russ_diamond_jim/12-2.jpg

And this is the cable pulled and the butterfly in the closed position:
http://i255.photobucket.com/albums/hh128/russ_diamond_jim/11-2.jpg

Title: Re: Exhaust question
Post by PTRider on 05/10/09 at 17:23:30

Here's the commercial version, the National Cycle Peacemaker Exhaust
http://www.nationalcycle.com/catalogue/Peacemakers.shtml

Title: Re: Exhaust question
Post by diamond jim on 05/10/09 at 17:54:53

Wow! I saw an average price of $850-$900. Makes me like my $20 setup even more.

Title: Re: Exhaust question
Post by marshall13 on 05/10/09 at 18:06:01

333E363A3839333D3E3A570 wrote:

Wow! I saw an average price of $850-$900. Makes me like my $20 setup even more.

check the specs on the page... with the device actuated, 90db.... 98 open... both buy me a ticket in florida....lol i count 3 moving parts on Jim's... 20 vs 900 bucks.... only thing is, you dont see Jim's pipe ends turn....get any evidence of heating up the engine when you have it activated Jim? thought about skeletonizing the washer that blocks off the pipe?

Title: Re: Exhaust question
Post by diamond jim on 05/10/09 at 18:30:02

Actually, the one pictured is version 1. It worked pretty good. Version 2, which I'm running now, is pretty much 90% of what Version 1 was but with some improvements. However, I don't think I took any pics. It uses the same mounting plate. The differences are that 1) the arm is half the length, 2) the stem inside the pipe is flattened on one side to center the washer, 3) the profile (when opened) was reduced to minimize airway obstruction and 4) the washer is perforated with a dozen 1/16" holes. But it's the same concept as the one pictured. Perforating the washer decreased the pressure which decreased the volume a little more while still diffusing sound. I'll have to find my camera just to make sure I didn't take pics of Version 2 but don't think I did. As for heat, I installed the heat shield behind that section of pipe when I first installed the exhaust to protect the heat sensitive stuff in that area. No evidence of any heat problems thus far in that regard. I was initially concerned that heat would cause metal expansion and binding of the butterfly action but no problems with it so far whether opened or closed. It would take about $5 and an afternoon to make another one if ever needed.