Best $200 dollars I've spent on my bus...! New Muffler

[wcfvw69]

As you can see in my thread link below, I bought this bus last summer. I've been going thru it mechanically since.

Well, I finally got around to changing the header/single muffler system and installing a new stock muffler on it. I like and maintain my VW's in their stock condition though I do appreciate other folks well done mods too.

I bought the best stock Muffler Bus kit that Bus Depot sold and installed it yesterday. I have to say, I am SHOCKED how much quieter this bus is now compared to the previous header/muffler system. I did some errands this am that included a couple of 10 mile freeway runs. It's AT LEAST 30% quieter inside the cab with the stock muffler. The bus is actually "relatively" quiet inside! I can have a conversation w/the GF now. I can't believe how pleased and happy I am after installing it.

I thought I'd share in case others are running headers/single mufflers and like me, think they are a bit loud.
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Decades of VW and VW parts restoration experience.
The Samba member since 2004.

**Now rebuilding throttle bodies for VW's and Porsche's**
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[Vince Waldon]

You may also notices improvements in cold weather drivability, since you now have a muffler with actual functioning manifold pre-heat plumbing.

Made a big difference on my daughter's bus, although she can now sneak home late at night with a bit more ease, given the new quiet.
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Vince Waldon Edmonton Alberta CANADA
1970 baywindow

[SGKent]

you will like the cold weather driving with it, and the quiet. Your engine will last longer too. However you will feel a reduction in power. Been there done that. It does make the bus more music friendly too. And lessen your chance of needing hearing aids when older. Ask me how I know.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[cliveawn]

If the old "loud" exhaust is in good condition i'm sure you could regain some of that 200 bucks spent by selling it..
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Green 78 Westfalia Helsinki,

2056 with 41 x 34 valves,ported heads
Fully balanced
8,5:1CR
JPM Custom made cam
JPM 7075 dual taper pushrods
IDF 40's with 28mm venturi's
Python CSP 42mm exhaust.
115 HP

Daily driver 2017 Volvo V60 D5 hybrid
Rica stage 2 tune 345hp.

''Funny thing about common sense is that its not very common''

Seismic gun mechanic

[wcfvw69]

It's funny eveyones mentioning the cold weather drivability. I had drilled out the pre-heat holes in the header. I knew this was only a feeble effort as the exhaust didn't flow well through the header per this thread below.

http://www.thesamba.com/vw/forum/viewtopic.php?t=3...p;start=40

It does warm up better though I need to tweak my choke a bit as well.

SGKENT- I was expecting a reduction in power but I actually haven't felt it. It feels a bit more torquey probably due to the increased back pressure?

I'm just thrilled with the difference and it sounds like a bus now as well.
_________________
Contact me at [email protected]
Follow me on instagram @sparxwerksllc

Decades of VW and VW parts restoration experience.
The Samba member since 2004.

**Now rebuilding throttle bodies for VW's and Porsche's**
**Restored German Bosch distributors for sale or I can restore yours**
**Restored German Pierburg fuel pumps for sale or I can restore yours**
**Restored Porsche fuel pumps or I can restore yours**
**Restored Porsche distributors or I can restore yours**

[TomWesty]

I noticed a slight drop in upper end HP and a slight bump in low end torque and a huge difference in ground clearance. All anecdotal except for the clearance.
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If you haven't bled on them, you haven't worked on them.
Visit: www.tomcoryell.com and check out my music!

[VWDog]

I just bought a 70 Single Cab with a stock muffler system. Now I put a stock muffler on my last Single Cab, a 62, and the heat was great. I figured the fact that it was a small space was the reason. However, in this "new" SC I feel heat coming out of the outlets way quicker than any of my other early Bays that had extractor type exhausts(so-called quiet packs with headers). In a longer trip I had to had to shut the heat almost completely off in order to keep from getting too hot. I guess the only way to truly substantiate any "findings" would be to run the same stock exhaust in an EB Bus, which I currently do not have.

Maybe someone else has experience with this, or maybe being from Canada heat is more of a concern for me. We might not live in igloos, but I prefer my Bus not to be one , lol!
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1970 Lotus White Single Cab 2015- , 1979 Sage Green 2014-2015, 1978 Dakota Beige Westy 2012-2015, 1978 Neptune Blue Riviera 2012-2017 , 1970 Neptune Blue Bus 2010-2012, 1970 Deluxe Savannah Beige 2010-2012, 1985 Iltis 2010- , 1962 Single Cab 2010-2013, 1975 Brasilia? Bay/Split Kombi from Brazil 2008-2011, 1985 DoKa 1999-2009, 1971 Bus 1999-2000, 1968 Double Cab 1991-1998, 1965 Ghia 1987-1991, 1970 Westfalia-bought by Mum and Dad in 1970, sold by me in 1993 why-oh-why :_(

[airschooled]

[wcfvw69]

[Heathintexas]

I've been on the fence about ordering this unit from BusDepot. I have a 70 bus with what looks like the same as your old loud muffler. I thought having to raise my voice at cruising speeds was expected in this thing.

Anyone know how long the paint holds up on these mufflers? Also wcfvw69, do you know which country/brand manufactured yours?
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http://www.thesamba.com/vw/forum/viewtopic.php?t=582117

[airschooled]

[wcfvw69]

Here's the box the muffler came in. FYI, it's not packaged well from Bus Depot. In fact, I'd give the packaging a big F. The muffler and parts are just thrown in the box with the other accessories in the kit. Miraculously, the only shipping damage was a bent clamp.

Robbie's on point with the paint job. Its pretty much all burned off now. It's not a concern to me though living in the dry desert. My bugs stock mufflers have no paint and no rust on them after 10 years though they are not driven in the rain.

Fitment? It wasn't too bad actually. It slid on the exhaust studs and heater box pipes w/out me having to loosen the heater boxes. The carb manifold preheat pipes needed to be slightly pried over to get the bolts lined up. The only big rock on fitment is the fresh air tubes that hook up to the heater boxes to the hoses on the fan shroud. They could use some work as the clamp from the heater box to the fresh air tube BARELY connects them. I'm sure I'm getting fan shroud air loss there as well. I also had to notch the connection pipe on the drivers side so it would sit down in the fresh air tube w/out hitting the exhaust pipe that runs through it. When you order this kit, you get an option of ordering the "splitty" tail pipe or bay tail pipe. They shipped the correct one for me.

Overall, I'd give this muffler kit a 7 out of 10. It does appear to be stamped with thick metal vs. the Brazil mufflers. As mentioned, if you live in a wet or humid area, you may need to consider getting it blasted and ceramic coated or paint it with something that will hold up to the heat.

Heathintexas, I thought the same thing in regards to how loud the bus was, especially on the freeway. I stated at last a 30% noise reduction. It could be even more. I wish I had a decibal reader for a before and after.
_________________
Contact me at [email protected]
Follow me on instagram @sparxwerksllc

Decades of VW and VW parts restoration experience.
The Samba member since 2004.

**Now rebuilding throttle bodies for VW's and Porsche's**
**Restored German Bosch distributors for sale or I can restore yours**
**Restored German Pierburg fuel pumps for sale or I can restore yours**
**Restored Porsche fuel pumps or I can restore yours**
**Restored Porsche distributors or I can restore yours**

[MarkWard]

I ran a few different exhaust setups on our 68. In the end found the stock exhaust to function the best. This is with stock cam and carb. The engine seemed to appreciate the back pressure vs the extractor type and Monza type. I think if you get into some sport cams, some head work, induction work, the extractor might help the hp and torque.
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☮️

[Busdepot]

The paint used on virtually all exhaust parts is not high-temp paint. It is really only designed to keep surface rust from forming while still on the warehouse shelf. It will burn off in no time. This exhaust kit we sell is by far the best quality we have been able to find. It is definitely nicer than the Brazilian stuff, and while not quite up to the Ernst (which is no longer made) it comes very close. I wouldn't hesitate to put it on my own Bus. (

As for the packaging, that is how they come from Europe. Generally exhaust manufacturers just throw everything in a big box with no protection at all, as they consider the parts to have "no cosmetic value." Minor dings and scrapes are not uncommon by the time they get to us, but they will not affect performance or reliability. (Of course if there was anything significant like a split seam we'd replace it -just let us know when you open the box - but that's very rare.)
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- Ron Salmon
The Bus Depot
www.busdepot.com

[ROCKOROD71]

I have installed 2 Dansk/Jopex mufflers on my beetle in the last few years and I will concur with wcfvw69 that the biggest fitment issue comes with the fresh air tube junction tinwork. It just ain't right and requires tweaking to get everything lined up through the rear tin and on the other side with the clamp to the heater box. The first one I did had a large gap on the drivers side even with the clamp installed. My solution was to use Aluminum tape and it held up really well and came off easily when I broke that engine down recently.
The latest one installed on my new engine fits way better, still took some bending to get the fresh air tubes centered. The quality overall is pretty good. the one I just took off my old engine has surface rust but I am going to sandblast it pretty soon and try painting it with VHT Flameproof and baking it for future use.
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1971 STD BEETLE- DD-1st car, 1st love. keepin' it stock! 1600DP, Solex 34-3 Mexi Bosch SVDA Dist NOW w/POINTS
1977 WESTY "KrustyKamper" 2L FI

[wcfvw69]

[airschooled]

[d21998]

Is that the old muffler laying next to the bus depot one? How long did you have the old one on your bus? Thanks. how's your heat now?

[wcfvw69]

[Heathintexas]

I found this today. It looks like we'll be having to extremely modify these mufflers since they're the only thing still available. It's a real bummer they cant make these things correctly from the factory.

http://haysvwrepair.com/how-to-make-a-crappy-dansk...ything-it/
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http://www.thesamba.com/vw/forum/viewtopic.php?t=582117