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General Category >> Rubber Side Down! >> Rear Brake Fix & Jetting for Dyna Muffler
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Message started by greenmonster on 09/28/11 at 10:24:39

Title: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 09/28/11 at 10:24:39

I'm planning on replacing my muffler with a dyna, I'm not sure what the after market is that the PO has on there, but what am I going to need as far as jets go? Where should I be looking to see what the current jets are?

I need to replace my rear brakes, approximately how long should that take me. Have to get the parts still but I'm trying to plan the time. Also, where is the best place to get new brakes?

Thanks folks.

Title: Re: Couple of questions
Post by Serowbot on 09/28/11 at 12:12:57

See here... Harley muffler guide... (http://suzukisavage.com/cgi-bin/YaBB.pl?num=1298689417)

Jets are stamped with the size... They're in the float bowl... you'll have to pull them and look...
http://i600.photobucket.com/albums/tt82/serowbot/rerun/2007_10_08_bikepics-1049830-full.jpg

Rear brakes,... how'd you ever wear those out?...
Should take about an hour... two if it's your first time pulling the rear wheel...

Title: Re: Couple of questions
Post by justin_o_guy2 on 09/28/11 at 17:51:16

I seriously doubt the rear brakes are worn out,

Title: Re: Couple of questions
Post by Oldfeller on 09/28/11 at 18:54:48

+1 on rear brakes not being worn out ...

Drill here for the first 15-20 years is to clean the dust out each time you take the wheel off, rough up the steel brake drum surface some with coarse sandpaper and put the brake drum assembly back in for another year or three ....

What makes you think your rear brakes are worn out?

Title: Re: Couple of questions
Post by greenmonster on 09/29/11 at 07:46:18

I'm no longer able to lock them up. I need to throw some new rubber on there as well so the wheel has to come off either way, I figured while it was apart I'd take a look at them. It is an 86 and I highly doubt that the PO's ever did anything with the brakes.

Is the best place to get new jets still from Lancer? I haven't seen him posting in the Rubber Side Down lately and I don't spend time in anything other than the Tech section.

Title: Re: Couple of questions
Post by Oldfeller on 09/29/11 at 07:49:42

A build up of brake dust results in not being able to lock the brakes up.

Lancer is out of pocket at this time, taking care of his aging mother.

You can buy jets on line lots of places, just be able to give them the jet numbers you want to buy.

Title: Re: Couple of questions
Post by greenmonster on 09/29/11 at 08:16:09

How many sizes am I likely to be needing if I change the muffler to a Dyna (seems the thoughts on that run around a 150) and change to a cone air filter? (the filter box is just begging for extra tools to be stored in it.)

I'd be very happy if all I need to do is clean the brakes rather than replace them.

Can I get the jets out by only pulling the float bowl or do I need to take the carb right out?

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by Gyrobob on 09/29/11 at 13:46:13

455047474C4F4D4C51564750220 wrote:

445146464D4E4C4D50574651230 wrote:

Like you mentioned, use the suggestions here for jet sizes. If it isn’t too far to the bike shop, take a stab at it with one jet. Otherwise, bracket your best guess with two more jets, one larger and one smaller than your best guess. Jets are cheap, anyway.

You can work the jets without taking the carb off,… if you are a skilled wrench, AND you are familiar with this particular set up. I’ll betcha Lancer could swap out the main jet in 8 minutes in a dark room with one hand tied to an ankle. For most of us, especially the first time, I would recommend taking the carb off, cleaning it well, and doing the work on a clean towel on a bench, or kitchen counter or some such.

I agree with the others about the brakes,.. unless something strange has been going on, the rear brake is probably not worn out. Like you said, since you are taking the rear wheel off anyway, just clean it out. I also like the Oldfeller’s sandpaper idea,… but I would rather use no coarser than about 100 grit, and I’d do both the drum and the shoe surfaces. The idea is just to remove any glaze, dull the surface, and remove very little material, if any.

While you have it apart, make sure the cam that spreads the shoes has a little bit of lube on it.

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by verslagen1 on 09/29/11 at 14:00:31

Regarding the rear shoes, I did something I completely forgot. I put a groove at about a 45° angle in the center of the brake material to help clear out the dirt. Last time I had it open, there was still dirt, but I don't think as much. At least blowing it out didn't create a blackout cloud. ;D

Title: Re: Couple of questions
Post by built2last66 on 10/01/11 at 03:10:23

362334343F3C3E3F22253423510 wrote:

How many sizes am I likely to be needing if I change the muffler to a Dyna (seems the thoughts on that run around a 150) and change to a cone air filter?

I was running a #150 main (Serowbot's suggestion) and everything else stock (except my K&N-137 air filter) with a Dyna muffler and everything was running pretty good...

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 10/03/11 at 10:30:14

turns out that my rear brake line is shot. Guess that my brakes aren't the problem, nor is dust. Any suggestions for the best price on a new rear brake cable?

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by verslagen1 on 10/03/11 at 13:36:08

Shot or needs lubrication?

Shot to me would mean 2 pieces or stretching with every stroke.

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 10/03/11 at 13:41:45

Stretching with every stroke is the impression that I got from the mechanic that I have doing my front fork seals. I'll be picking the bike up later this week so I'll have details then.

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by justin_o_guy2 on 10/03/11 at 14:49:57

You can decide if its stretching,, no one needs to do that for you,

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 10/03/11 at 15:54:13

Which is why I told him not to replace it but to simply mount the new rubber the way I had asked him to and that I'd take care of the brake myself.

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 10/12/11 at 16:58:58

Got the bike back. Took it for a 250Km break in. Very nice.

Since the back brake was worse than when I took it in I've now taken it apart and hockey sticks is that thing ever stuck but good. I've taken the entire cable off and have it hanging right now with a few squirts of WD-40 in both ends. She doesn't want to slide at all.

Anyone have any tips or should I be looking for a new brake cable after all?

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by verslagen1 on 10/14/11 at 11:35:10

Here's the idea I had that's stock on another bike...

http://i190.photobucket.com/albums/z189/uberkafer/KZ250/P2250074Small.jpg

I just cut 1 groove in the middle of the shoe.

Title: Re: Rear Brake Fix & Jetting for Dyna Muffler
Post by greenmonster on 10/14/11 at 11:46:05

Probably helps clear the dust out from the pad.

After pulling the brake cable out, I'm pretty sure that it's the cable not the brake itself. I couldn't slide the cable more than about an 1/8".