"Fixed" my Hooker Sidepipe reverse flows
Thread Starter
Le Mans Master
Joined: Mar 2002
Posts: 7,056
Likes: 40
From: Life is Messy, Bring a mop
"Fixed" my Hooker Sidepipe reverse flows
:yesnod: as delivered, these are WAY too restrictive. I drove for ~ a week with no mufflers and don't recommend it for the street (fun but a little too much).
So...I took my handy power drill with a 3/4" hole saw and put 4 holes in each end of the muffler assy. Now the sound is :cool: :yesnod: Just right at cruising speeds and doesn't sound like it's blowing through a straw when I get on it.
:D
So...I took my handy power drill with a 3/4" hole saw and put 4 holes in each end of the muffler assy. Now the sound is :cool: :yesnod: Just right at cruising speeds and doesn't sound like it's blowing through a straw when I get on it.
:D
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: "Fixed" my Hooker Sidepipe reverse flows (72rdstr)
Hi 72rdstr
Are the reverse flow mufflers not stuffed with glass wool ?
If they are, just drilling holes into the head sections will sure blow the glass wool away and out of the muffler.
What do you think ?
Gunther :seeya
Are the reverse flow mufflers not stuffed with glass wool ?
If they are, just drilling holes into the head sections will sure blow the glass wool away and out of the muffler.
What do you think ?
Gunther :seeya
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Re: "Fixed" my Hooker Sidepipe reverse flows (WESCH)
I cut up a set of reverse flows to use the cases...there is no sound dampening glass in them just pipes and baffles :cheers:
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: "Fixed" my Hooker Sidepipe reverse flows (yellow 72)
Thanks,
You don't happen to have a pic of this cut up mufflers ?
On my pic, the short black muffler is a well used glass pack muffler, the new once are reverse flow mufflers from Neil.
Gunther
[Modified by WESCH, 2:47 PM 6/30/2002]
You don't happen to have a pic of this cut up mufflers ?
On my pic, the short black muffler is a well used glass pack muffler, the new once are reverse flow mufflers from Neil.
Gunther
[Modified by WESCH, 2:47 PM 6/30/2002]
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Re: "Fixed" my Hooker Sidepipe reverse flows (WESCH)
Sorry no pics...what I do is cut the ends out to remove the guts, then weld the ends to a glasspack type muffler then weld it back into the case :cheers: varoooom :lol:
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: "Fixed" my Hooker Sidepipe reverse flows (yellow 72)
OK, so tell me please,
does drilling holes as stated in first post improove the flow of the reverse flow mufflers ? I still don't understand the guts inside, how it's build up.
Somehow 2 tubes running side by side, or ?
So your saying that you cut them up, remove the guts and insert a straight tube with glass wrapping. This coppies the glass packs, doesn't it ?
Gunther :seeya
does drilling holes as stated in first post improove the flow of the reverse flow mufflers ? I still don't understand the guts inside, how it's build up.
Somehow 2 tubes running side by side, or ?
So your saying that you cut them up, remove the guts and insert a straight tube with glass wrapping. This coppies the glass packs, doesn't it ?
Gunther :seeya
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Re: "Fixed" my Hooker Sidepipe reverse flows (WESCH)
That's right I just use the original slip in muffler CASE as something to center the glasspack in the tube :cheers:
The reverse flows are very restrictive, the 1 3/4" inlet leads to a small baffled chamber then makes an s turn and exits thru another chamber and out to the 1 3/4" outlet....or something close to that as I remember it. :cheers:
The reverse flows are very restrictive, the 1 3/4" inlet leads to a small baffled chamber then makes an s turn and exits thru another chamber and out to the 1 3/4" outlet....or something close to that as I remember it. :cheers:
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Safety Car
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Re: "Fixed" my Hooker Sidepipe reverse flows (yellow 72)
I have JCL baffles for my side pipes. I cut two thirds of the muffler off and drilled out the baffles a little but they still hold the engine back pretty good. I'm currently running no mufflers and it's like night and day, soooo much more power. The JCL baffles are definitely the lesser of the other two evils (hooker glass packs / reverse flows) though.
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: "Fixed" my Hooker Sidepipe reverse flows (yellow 72)
Thanks yellow72,
The problem is that I don't want to destroy the reverse flow mufflers as they make me pass the bi-yearly inspection.
I will probably make up a pair of glasspacks to the size of the reverse flows.
I good friend is a professional aircraft welder and promised to weld them up out of stainless. What size inner tube should I take ?
bence13_33 , you cut off 2/3 of the non restrictive JCL baffles, wow.
No way I can drive this over here. If the cops stop me, the noise limit about 30 Feet behind the car with the engine at 4000 RPM should not be above 82 DB. That's not a lot.
The corroded glasspacks where at 87 DB, the new reverse flows at 78 DB.
Not much to play with.
I guess, the cops don't realy worry about a bit more than the 82 limit, but the bi-yearly inspection does, so every second year, exhaust off and change mufflers. :mad
Gunther
:seeya
The problem is that I don't want to destroy the reverse flow mufflers as they make me pass the bi-yearly inspection.
I will probably make up a pair of glasspacks to the size of the reverse flows.
I good friend is a professional aircraft welder and promised to weld them up out of stainless. What size inner tube should I take ?
bence13_33 , you cut off 2/3 of the non restrictive JCL baffles, wow.
No way I can drive this over here. If the cops stop me, the noise limit about 30 Feet behind the car with the engine at 4000 RPM should not be above 82 DB. That's not a lot.
The corroded glasspacks where at 87 DB, the new reverse flows at 78 DB.
Not much to play with.
I guess, the cops don't realy worry about a bit more than the 82 limit, but the bi-yearly inspection does, so every second year, exhaust off and change mufflers. :mad
Gunther
:seeya
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Re: "Fixed" my Hooker Sidepipe reverse flows (WESCH)
WESCH, you can use any size muffler that will fit in the sidetube the bigger the better. Just need to weld round plates to the ends to center it in the pipe.
It's a cheap trial and if you don't like them :U no big deal :cheers:
It's a cheap trial and if you don't like them :U no big deal :cheers:
