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General Category => Modifications => Topic started by: ProStreetZ28 on October 06, 2020, 10:21:48 AM

Title: Exhaust Mod Write Up
Post by: ProStreetZ28 on October 06, 2020, 10:21:48 AM
I downloaded a copy of write up quite a few years ago, but yesterday the laptop it was saved on crashed. I'm almost ready to get the FJ1100 back on the road after many years. It's been a long process with carb rebuilds, petcock rebuild, clutch master and slave rebuild and of course battery and tires. One of the last things was to modify the mufflers since I like the appearance of the OEM exhaust, just wanted a little more sound out of it. The bike was my step-dads since new and I got it from him about 10 years ago.

I looked through the technical section and couldn't find the write up, so I'm hoping someone else downloaded it or someone could help my dumbass find it on the site.
Title: Re: Exhaust Mod Write Up
Post by: Pat Conlon on October 06, 2020, 03:19:20 PM
Welcome back, it's been awhile....

Due to their restrictive MOT regs, I recall the Aussie guys had a write up on modifying the oem cans,
It's been many years ago. Was it a write up on modifying the XJS cans, used on the FJ?
Unfortunately, I don't think we saved anything in the Mod. Files

Perhaps the Convicts will chime in....

In the meantime, here is a utube on the subject:
https://www.youtube.com/watch?v=lN-N4bNTG50 (https://www.youtube.com/watch?v=lN-N4bNTG50)
Here is a post from a different forum: https://diversionclub.proboards.com/thread/16806/yamaha-fj1200-potential-silencer-modification (https://diversionclub.proboards.com/thread/16806/yamaha-fj1200-potential-silencer-modification)

Cheers. Paddy
Title: Re: Exhaust Mod Write Up
Post by: ribbert on October 06, 2020, 10:54:54 PM
Quote from: Pat Conlon on October 06, 2020, 03:19:20 PM

Due to their restrictive MOT regs, I recall the Aussie guys had a write up on modifying the oem cans,

Perhaps the Convicts will chime in....

Cheers. Paddy

Pat, that would be the Poms, they're the ones with the MOT.

Noel
Title: Re: Exhaust Mod Write Up
Post by: Pat Conlon on October 07, 2020, 01:35:54 AM
Ok, thanks Noel....it was so long ago, *I think* I recall Klavdy being involved.....
Title: Re: Exhaust Mod Write Up
Post by: Alf on October 08, 2020, 03:02:26 PM
you have the XJR derestriction cans mod in my website, exhaust section
Title: Re: Exhaust Mod Write Up
Post by: ProStreetZ28 on October 08, 2020, 04:05:26 PM
Quote from: Alf on October 08, 2020, 03:02:26 PM
you have the XJR derestriction cans mod in my website, exhaust section

Thank you, do you have any video of when you ran it without the baffle in them?

Title: Re: Exhaust Mod Write Up
Post by: Alf on October 09, 2020, 07:03:47 AM
Quote from: ProStreetZ28 on October 08, 2020, 04:05:26 PM
Thank you, do you have any video of when you ran it without the baffle in them?

Not video, but I have a drawing, only that I have not how to insert the pic or send it to you by PM  :Facepalm:
Title: Re: Exhaust Mod Write Up
Post by: RPM - Robert on October 09, 2020, 12:49:54 PM
Alf, adding pictures is very simple.

Title: Re: Exhaust Mod Write Up
Post by: RPM - Robert on October 09, 2020, 12:54:44 PM
Sorry, I forgot the most crucial part. After selecting your photos. Click post. Voila! They are attached to your post so members can see.
Title: Re: Exhaust Mod Write Up
Post by: RPM - Robert on October 09, 2020, 01:00:14 PM
Can confirm, no special embed code needed for iPhone, iPad, Macbook, or Windows PC/laptop photos.

Can not confirm for Android users.
Title: Re: Exhaust Mod Write Up
Post by: Paul.1478 on October 09, 2020, 03:27:02 PM
Speaking of exhaust...
is RPM no longer selling them?
Title: Re: Exhaust Mod Write Up
Post by: Alf on October 09, 2020, 03:50:13 PM
3 years thinking that it was no more possible to add pics  :Facepalm:
Title: Re: Exhaust Mod Write Up
Post by: RPM - Robert on October 09, 2020, 03:53:25 PM
Long story short, not right now. Can't go into details at this time but we are working on it.
Title: Re: Exhaust Mod Write Up
Post by: ProStreetZ28 on October 09, 2020, 06:21:52 PM
Quote from: Alf on October 09, 2020, 03:50:13 PM
3 years thinking that it was no more possible to add pics  :Facepalm:

Thank you, very similar to the mod on my Suzuki GSX600F. But the tube in the Suzuki was welded to the divider plate and I had to cut it off. I used a hole saw to cut the rear plate, I think I'll try it with the Yamaha.
Title: Re: Exhaust Mod Write Up
Post by: FJ1200W on October 09, 2020, 07:55:28 PM
Quote from: RPM - Robert on October 09, 2020, 03:53:25 PM
Long story short, not right now. Can't go into details at this time but we are working on it.

The "Redpath" may be a very good option to pursue - He's in Anaheim and does fantastic work.



Title: Re: Exhaust Mod Write Up
Post by: Old Rider on October 10, 2020, 02:11:27 AM
I have done this before on my fj1100 because of a rattling sound from exhaust mufflers but it was about 30 years ago so its hard to remember exactly what was done. i drilled out the 3 pop nails took off the back plate and then i found some lose rods/tubes inside that had rusted lose  .i pulled out the tubes i think it was 3 of them and they was about 30 centimeter long. i then modified the plate cutting out some material so it looked like a 3 armed cross  (see pick) not sure if i did that on the popped on plate or on the muffler backside itself .After this It sounded very good  something like this  :biggrin:https://www.youtube.com/watch?v=pF8x9_j704w (https://www.youtube.com/watch?v=pF8x9_j704w) or maybe more like a  Honda rcb 1000. watch from 3 minutes into this vid.  https://www.youtube.com/watch?v=JE-nbFCTO6w (https://www.youtube.com/watch?v=JE-nbFCTO6w)
Title: Re: Exhaust Mod Write Up
Post by: Old Rider on October 10, 2020, 03:00:24 AM
I remember now that i also had rattling noise from the 4 downpipes / bends (lose innertube ) and fixed it by drilling a hole and fit a popnail.
Title: Re: Exhaust Mod Write Up
Post by: Waiex191 on October 10, 2020, 09:25:55 AM
Quote from: RPM - Robert on October 09, 2020, 01:00:14 PM
Can confirm, no special embed code needed for iPhone, iPad, Macbook, or Windows PC/laptop photos.

Can not confirm for Android users.
On my android phone it works just like you outlined above.
Title: Re: Exhaust Mod Write Up
Post by: Paul.1478 on October 11, 2020, 01:37:46 PM
Quote from: RPM - Robert on October 09, 2020, 03:53:25 PM
Long story short, not right now. Can't go into details at this time but we are working on it.

Thanks. I'll wait.
Title: Re: Exhaust Mod Write Up
Post by: ProStreetZ28 on November 30, 2021, 03:01:50 PM
I did the tube removal and bored out the holes in the plates before I reinstalled them. It makes it slightly louder, but not too bad. Eventually I'd like to get a complete exhaust for it.
Title: Re: Exhaust Mod Write Up
Post by: CutterBill on December 06, 2021, 02:55:08 PM
Loud pipes suck.

Bill