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Supertrapp exhaust (Read 591 times)
Bugaboo
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Supertrapp exhaust
08/23/08 at 20:04:51
 
Although I'm new to this forum, I've been riding a '98 Savage for years and was active on on  Heise forum for a while.  I had almost lost my way and was pricing v-twins when I started reading this forum. I just need to make some modifications to my Savage.

I'm having the dealership install my new Supertrapp, since I need them to re-jet the carburetor using the kit I just bought from Lancer. (Yeah that's expensive, but there aren't any shadetree tinkerers around here that I trust, and my ex-boyfriend's last "I'll fix it for you" involved a 2-pound hammer.)  The Supertrapp comes with minimal instructions. This afternoon the service writer guy called to ask how many disks I wanted them to install.  He told me the disks are just there to change the sound, a slip-on won't improve performance, and I don't need to re-jet.  I'm not going to trust any of this without getting additional opinions. For those of you with Supertrapps, how many disks are you running and how many disks do you recommend?  Should I go ahead and have it re-jetted? I asked them to do the white spacer and mixture screw mods while they're fooling with the carburetor. Is that reasonable or is changing too many things at once a bad idea? I'd appreciate your guidance. Thanks.
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Re: Supertrapp exhaust
Reply #1 - 08/23/08 at 20:14:10
 
7 disks + 150 main = slipping clutch   Shocked

yeah, no improvement at all.   Tongue

gas mileage remain about the same.   Grin
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Re: Supertrapp exhaust
Reply #2 - 08/23/08 at 20:28:21
 
Yea! Another Southern member  Cool

Hi Bugaboo! Welcome!

I'm sure the guys will help out with your questions!
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justin_o_guy2
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Re: Supertrapp exhaust
Reply #3 - 08/23/08 at 22:12:06
 
The Trapp comes with Instructions to "Clean It Well" or the manufacturing oils will blue it. & NO, their warranty wont cover it,
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Re: Supertrapp exhaust
Reply #4 - 08/24/08 at 07:49:18
 
Bugaboo, Welcome to the forum! It sounds like your service writer guy is an idiot. But thats ok most of them are.Hopefully the guys in the back who will actually work on it know a little more. Have you tried doing a computer search for motorcycle shops in your area? I find it hard to beleive that there are no good dyno tune shops in the area which would still probably be cheaper than the dealership. The discs are NOT just to change the sound although the more discs you put in the louder it will be. It will also lower the back pressure of your exhaust system which will lean out your fuel mixture. The great thing about the Supertrapp is that you can adjust it to match your jetting so you dont have to re-jet to get performance improvements but you will notice more of an increase if you do. Do you have the stock air filter on the bike? The stock muffler? are you sure the bike has never been re-jetted?  Gazoo  www.lubedealer.com/1lube  
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Re: Supertrapp exhaust
Reply #5 - 08/24/08 at 07:55:25
 
2005 S40 -I installed a DynoJet kit, Supertrapp with 14 discs, and a low restriction K&N air filter.

It feels faster to me than my previous bike (a 1990 883 Sportster with a jet kit (same size 40 mm carb) and a set of Python semi-baffeled pipes.  During the course of my 14 year 30,000 mile ownership of the HD Sportster, I installed a 1200 cc kit-then the Sportster felt like it had more torque than my current Savage but the vibrations at 60+ mph killed any feelings of riding pleasure-the bike felt like a paint can shaker!  

Sold it for a lot more than I paid for it, used the money to buy a 2005 Savage, did the mods as stated above plus handling mods (superbrace, performance fork springs, and rear shocks).  I am happier now than I was with the Sportster back then.  Why am I saying all this?
My experience says to me that with the above set-up, I have a bike that is more fun to ride, more reliable, (the Sporty's 4-speed transmission, belt countershaft,  top end and shifter mechanism broke or blew up on 4 separate occasions-all costly HD repairs), and a lot cheaper to buy, modify and own than the 1990 Sportster that I owned for 14 years.

The Supertrapp with the right set up is very nice-hope this helps.
markrider
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Re: Supertrapp exhaust
Reply #6 - 08/24/08 at 09:35:26
 
Thanks for your thoughts thus far. Hopefully more of you will weigh in  over the next few days.

Actually, this is the same service writer guy (then employed at the other dealership), who declined to order a head cap seal to fix the oil leak a few years back, even though I provided the part number and instructions off the Heise forum. After they replaced some gaskets it still leaked like a sieve and they had to eat a bunch of labor cost to install the plug.  

I bought the bike used with just a few miles on it and have ridden 15,000 miles with the stock muffler and air filter. No, it has never been re-jetted.  My daily commute is only 16 miles round trip, so I have been for the most part o.k. the way it is.  I asked them to re-jet whether it was really necessary or not in an attempt to get as much performance improvement as possible.

Apparently, they've already taken things apart and installed the 150 jet, so as far as having the dealership do the work, I'm probably already committed.

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Re: Supertrapp exhaust
Reply #7 - 08/24/08 at 09:42:56
 
So the service writer thinks he knows more than us?  I hope he learned his lesson... the customer is always right.

But I'd tell'm to go f himself and talk to the mechanic.
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Re: Supertrapp exhaust
Reply #8 - 08/24/08 at 10:05:16
 
In Alabama, a customer who happens to be a 100-pound female with a motorcycle has a real credibility problem.
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Re: Supertrapp exhaust
Reply #9 - 08/24/08 at 10:09:32
 
Bugaboo, If they are installing the 150 jet and they do it properly you should be fine. Hopefully they are doing the white spacer mod as well. This will help your mid throttle performance. I would have them install all 8 discs with the 150 jet and you can fine tune from there. It is very easy to change the discs. all you need is an allen wrench and some high temp grease. I think you will be very happy with the supertrapp when you get it right. I love mine! The sound is perfect for me. just the right tone, not too loud but louder than stock, and if it is not loud enough for you all you have to do is order the open end cap and run it without any discs. It will flow the same as 10 discs. Gazoo www.lubedealer.com/1lube
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Re: Supertrapp exhaust
Reply #10 - 08/24/08 at 11:20:01
 
I may be lean, but I dont think so & I have 14 disks on the TRapp, with a 150 main,
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Re: Supertrapp exhaust
Reply #11 - 08/24/08 at 18:19:33
 
Justin, If your bike is running well I wouldnt worry! I suggested 8 discs because i know that is what the supertrapp comes with and I would rather err on the rich side which will cause no engine damage and she can add discs from there to fine tune if needed.I cant really compare my setup to yours because I have the Dyno-jet kit and my jets are a different number than yours. I installed the 144 as suggested with 8 discs but have increased to 10 discs. I am looking for fuel mileage but do not want to sacrifice performance.  Gazoo www.lubedealer.com/1lube
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Re: Supertrapp exhaust
Reply #12 - 08/25/08 at 18:17:36
 
Thanks, Gentlemen.  White spacer mod, 150 jet, and start with 8 disks (maybe 10?)  I'll let you know how it goes.
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Re: Supertrapp exhaust
Reply #13 - 08/26/08 at 03:38:25
 
markrider wrote on 08/24/08 at 07:55:25:
2005 S40 -I installed a DynoJet kit, Supertrapp with 14 discs, and a low restriction K&N air filter.

It feels faster to me than my previous bike (a 1990 883 Sportster with a jet kit (same size 40 mm carb) and a set of Python semi-baffeled pipes.  During the course of my 14 year 30,000 mile ownership of the HD Sportster, I installed a 1200 cc kit-then the Sportster felt like it had more torque than my current Savage but the vibrations at 60+ mph killed any feelings of riding pleasure-the bike felt like a paint can shaker!  

Sold it for a lot more than I paid for it, used the money to buy a 2005 Savage, did the mods as stated above plus handling mods (superbrace, performance fork springs, and rear shocks).  I am happier now than I was with the Sportster back then.  Why am I saying all this?
My experience says to me that with the above set-up, I have a bike that is more fun to ride, more reliable, (the Sporty's 4-speed transmission, belt countershaft,  top end and shifter mechanism broke or blew up on 4 separate occasions-all costly HD repairs), and a lot cheaper to buy, modify and own than the 1990 Sportster that I owned for 14 years.

The Supertrapp with the right set up is very nice-hope this helps.
markrider
Mark, Which jet did you use? Gazoo www.lubedealer.com/1lube
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Re: Supertrapp exhaust
Reply #14 - 08/26/08 at 05:33:21
 
I used Dynojet Kit # DJ-3107 for the Suzuki Savage/S40.  The DynoJet main jet sizes in this kit do not match the typical size numbers for the Mikuni main jets.  The kit comes with the following main jet numbers:  DJ-138, DJ-140, DJ-142, DJ-144, and DJ-146.

After numerous runs, spark plug readings and phone conversations with the tech guys at DynoJet-the right main jet for my application (Supertrapp w 14 discs,  and K&N low restriction fabric panel filter, and an average of  800 ft. above sea level) is  main jet DJ-144.

The kit included a new fuel needle with an adjustable  E-clip, I used position  number 4 from the top of the needle.   I also used the white spacer without any modification-as recommended by the tech guys at Dynojet.

All I can say is that this set-up is right on for my application, the S40 runs as good, if not better than any of my prevous bikes.    I do have  a little experience with this carb tuning - (I have tuned the carbs for two of my previous motorcyles- 1990 Sportster with Python pipes, K&N  low restriction air filter, and Dyna Single fire ignition with high voltage Dyna coils, and a 1989 Honda GB500 on which I installed a Dynojet kit and a Supertrapp exhaust but I can't remember the details from back then).

Hope this helps.
Mark
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