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 1100 original exhaust

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joshct
Montanarolo
Montanarolo


Posts : 11
Join date : 2014-09-16

PostSubject: 1100 original exhaust   Wed Feb 18, 2015 9:39 pm

Just got a-hold of an original exhaust for my bike (1100) so I can do some experimenting. Before I rip it apart has anybody else taken the can apart? I mean the conical section that is welded to the main "barrel" of the exhaust itself. Is the first section a catalytic converter or does it have any internal baffles?

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barton
Squinternotto
Squinternotto


Posts : 2
Join date : 2014-06-02

PostSubject: Re: 1100 original exhaust   Thu Feb 19, 2015 7:31 am

I have done it. Catcon is in the conical section. After that there is different size of cambers. Nothing else. Sorry about my english...
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Tolle09
Don Abbondio
Don Abbondio


Posts : 234
Join date : 2014-10-07
Age : 53

PostSubject: Re: 1100 original exhaust   Thu Feb 19, 2015 8:05 am

Put one of the lardy things on the bathroom scales once, weighed 1 stone or 6.3 kilos in new money, the GPR I replaced it with didn't register
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DungeonMaster
GRiSO
GRiSO


Posts : 1163
Join date : 2013-11-26
Age : 53

PostSubject: Re: 1100 original exhaust   Thu Feb 19, 2015 9:06 am

When I get my Ago can I held the stock in one hand and the Ago in the other. Good Gravy!!
I love my Ago can.

DM
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joshct
Montanarolo
Montanarolo


Posts : 11
Join date : 2014-09-16

PostSubject: Re: 1100 original exhaust   Thu Feb 19, 2015 8:29 pm

Weight is one thing, and don't get me wrong I like my bike perfect. I just can't get over the ugly, ham-fisted original exhaust. A GRiSO was never a performer but rather how I always thought a bike should ride and look. It takes some doin to ride smoothly and quickly with a stock 1100. I love the bike top down. Its just that exhaust bothers me...

Will send pictures soon, stock/modified shorty exhuast. On the cheap
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ghezzi
Fra Cristoforo
Fra Cristoforo


Posts : 1699
Join date : 2014-05-22
Age : 59

PostSubject: Re: 1100 original exhaust   Thu Feb 19, 2015 8:41 pm

Well Josh, I can't help you with a cheap exhaust as I hate buying off the shelf parts. I have a weird fetish for designing one-of items.

You said, " It takes some doin to ride smoothly"
You have come to the right place for "cheap" tuning. Keep reading.
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Birch
Grignapoco
Grignapoco


Posts : 119
Join date : 2014-04-17

PostSubject: Re: 1100 original exhaust   Sun Feb 22, 2015 10:40 am

Outside of the look, any noticeable gains with new pipe and tune?
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joshct
Montanarolo
Montanarolo


Posts : 11
Join date : 2014-09-16

PostSubject: progress, original exhasut modifications   Sat Mar 14, 2015 2:01 pm

For anybody interested these are the internal components of the bazooka tube.


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inside the first portion is what I think is the catalytic converter,  the dealer calls it a pre-cat

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The entire stainless "beauty tube" of the exhaust can be slipped off once some welds for the mounting bracket are popped off.  The internal workings of the can look to be pressed together and welded at the end.  The interior is composed of 2 chambers, seperated by a baffle.  The end tube is sort of a db killer, it is a long tube but no holes.  The interior is lined in insulation and stainless mesh.  Looks like high quality components.

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Anyway, I have cut it apart.  I'm keeping the catalytic converter and adding a primary chamber and a shortened db killer in the form of a 4 inch long 1.5 diameter tube.  Closed on the interior end with 9/16 holes for a combined 2 square inch of flow through area. 

It will be interesting to see if it works.  This is an experiment, will post a video of the finished exhaust soon.
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Grisonut
GRiSO
GRiSO


Posts : 1015
Join date : 2014-01-02

PostSubject: Re: 1100 original exhaust   Sat Mar 14, 2015 7:14 pm

Good job on the dissection... Thumbs Up
This can would actually look a lot better in a smaller scale.
I like the "Moto Guzzi" embossing in the stainless part of it, same thing on the 8V.
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Steak
L'Innominato
L'Innominato


Posts : 1905
Join date : 2013-05-28
Age : 51

PostSubject: Re: 1100 original exhaust   Mon Mar 16, 2015 7:40 am

Good work Josh, keep us posted on your progress.

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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PostSubject: Re: 1100 original exhaust   Today at 4:02 pm

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1100 original exhaust
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