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 Write-Up: Installing Glasspack Mufflers

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Abaddon
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 12, 2014 5:13 pm

llamalor2112 wrote:
Every glasspack install I've seen goes to a non-stock location. Off to the sides or straight down the center. Are they too long to sit in the stock exhaust positions so that the tips are in oem location?

No, they will NOT fit in the stock locations and keep everything where it is. Unless, as you mentioned, you install them down the tunnel....
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 12, 2014 6:12 pm

I know old topic haha I just figure most guys use the dashboard? Plus Aaron would want em to merge anyhow. Good to know though. Still mulling over decisions.  confused
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 9:11 am

Codith, am I right in saying you used the Thrush 24203's? 22" shell length, 27" overall length, 2.25" inlet, 2.25" outlet, 3.5" shell diameter. I'll order 2 tomorrow if so.

http://www.amazon.com/Thrush-24203-Glass-Pack-Muffler/dp/B000CIV6S0/ref=cm_wl_huc_item

I'm thinking about getting exhaust tips similar to what a 93-02 Z28 has. My only concern is having a "V" instead of a "U" (does that make sense?). I'd prefer the pipes to be facing straight out the back with the tips sitting as flush as possible to the rear bumper.

What am I looking at as far as pipes, hangers, and clamps? The tips I found were also 2.25".
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 1:29 pm

My only advise is to not remove the oem resonators.You will hate the Riv thereafter no 
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 1:35 pm

I think codith used the 24201s fwiw
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 2:32 pm

robotennis61 wrote:
My only advise is to not remove the oem resonators.You will hate the Riv thereafter no 

I was going to try and mimic Codiths setup, but I'm not sure whether to use his old setup (glasspacks with everything else stock) or his current setup which IIRC is a glasspack as a resonator, another as a muffler, and then another actual muffler (I don't remember what brand/model). I'm thinking the first option then maybe change it to the second once I get my downpipe in.
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 3:43 pm

matt270avian wrote:

robotennis61 wrote:
My only advise is to not remove the oem resonators.You will hate the Riv thereafter no 


I was going to try and mimic Codiths setup, but I'm not sure whether to use his old setup (glasspacks with everything else stock) or his current setup which IIRC is a glasspack as a resonator, another as a muffler, and then another actual muffler (I don't remember what brand/model). I'm thinking the first option then maybe change it to the second once I get my downpipe in.

Speaking from experience,if you delete the rez you will kill your sound system.Gone.You will only enjoy it at idle.Highway drone will either drive you mad or you will resign yourself to it.either way you will go mad.
the best sounding muffs I've heard for the Riv are Borlas out back.You'll get the burble and some higher flow but keep the system relatively quiet.
I cut open the stock rez and to my surprise they are completely hollow! some baffling and channels,otherwise really free flowing.
even the oem muffs are really free flowing,Buick did their homework.
I have a 3" exhaust that works well with my ported heads and manis and cherry bomb rez and Thrush turbos out back, but as I write this I cannot figure out how to cure the Tinnitus that I'm sure is a result of loud cars,and high pitched power tools.
Run from the mod fever my son..RUN! stop 
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 3:53 pm

robotennis61 wrote:
Run from the mod fever my son..RUN! stop 


 
devil

I was planning on keeping my stock res. Just glasspacks out the back for now. If anything they'll fit the Camaro perfectly.
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 4:07 pm

Hooker Aerochambers FTW
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 6:18 pm

What do you guys think about getting 2 of these?

http://www.amazon.com/Walker-Exhaust-36326-Pipe-Flex-Kit/dp/B001AXBM58/ref=sr_1_2?s=automotive&ie=UTF8&qid=1400019447&sr=1-2&keywords=2.25+flex+pipe

I would take those off of the Y and into the glasspacks (I'm set on them now). What would I need to get the tips on the glasspacks?
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Tue May 13, 2014 7:07 pm

matt270avian wrote:
What do you guys think about getting 2 of these?

http://www.amazon.com/Walker-Exhaust-36326-Pipe-Flex-Kit/dp/B001AXBM58/ref=sr_1_2?s=automotive&ie=UTF8&qid=1400019447&sr=1-2&keywords=2.25+flex+pipe

I would take those off of the Y and into the glasspacks (I'm set on them now). What would I need to get the tips on the glasspacks?

Please don't go the flex pipe route.Been there spent that.WOT,seriously
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Wed May 14, 2014 9:15 am

Mufflers, piping, clamps, and tips are ordered. Next stop is to find some springs.
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Fri May 16, 2014 6:14 pm

Soon....



In case anyone is wondering, the Y pipe splits off into 2 1.75" OD pipes, then each pipe goes into a 1.75" ID to 2.25" OD adapter, then a 2.25" ID to 2.25" OD 45 degree bend into the mufflers which are 2.25" ID on both sides. I haven't got my exhaust tips yet so I don't know if they're 2.25" ID or OD. I hope that they're OD so that they'll slip right into the mufflers.

Parts used:

Thrush 24201 (x2)
Walker 36272 (x2)
Summit Racing G4622 (x6)
Patriot Exhaust 1.75" clamp (x2, no part number)
Walker 2.25" ID OD 45 degree bend (x2, no part number)
Walker 41400 (x2)

I got exhaust tips off of a 93-02 Camaro. I don't know how they'll look with 45 degree bends, and if anything I'll pull them off and get 90 degree bends.
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Sun May 18, 2014 8:24 am

Well, they're on. If I were to do this again I would get a 2" to 2.25" adapter instead of a 1.75" to 2.25". The stock Y pipe splits off into 2 pipes that are CLOSE to 1.75" OD, but with rust and everything I couldn't get my adapters on. Luckily my friends have welders and I was able to just straight pipe it down to one of their houses a few miles away. The glasspacks have a really nice sound at idle with a little droan at ~2k RPM. Pictures and video coming soon. For some stupid reason FedEx took my tips from the next city over to the next STATE over... Wtf?
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Sun May 18, 2014 7:11 pm

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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Sun May 18, 2014 9:37 pm

What's the recommended solution for the stock piping hanging low? Get shorter hangers to replace the ones in the middle of the car?
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 19, 2014 8:40 am

matt270avian wrote:
What's the recommended solution for the stock piping hanging low? Get shorter hangers to replace the ones in the middle of the car?

It might require some tweaking of the pipes and hanger to get it up higher. With my headers, the pipe is forced to be lower in the front because of how far down the header goes. I also stopped using the stock, rearward most hangers (on the sides), and installed new hangers on the rear aluminum frame. This gave more support IMO for my heavy ass mufflers, and also gave me a little more freedom of movement up and down.

P.S. Fix your Power Steering Pump  razz 
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 19, 2014 9:21 am

Abaddon wrote:
P.S. Fix your Power Steering Pump  razz 


99% sure it's the snout bearings. When the SC belt came off the noise went away, and that's how I knew something was up and to pull off immediately.

I may have accidentally melted the bottom of my rear bumper due to the lack of exhaust tips  headbutt . Time to break out the dremel and spray gun.
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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 19, 2014 9:44 pm

A pair of tips (and a slightly melted bumper) later.... The Z28 tips were just too long so I'm going to see if I can shorten them at all.

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PostSubject: Re: Write-Up: Installing Glasspack Mufflers   Mon May 19, 2014 10:04 pm

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