Exhaust Options for Hot-Street 1776cc

[GearHeadKeith]

I am soliciting opinions on an exhaust for a hot-street 1776cc. My car is meant to be a “Day-Two” Looker. My engine consists of:

Dual Weber 40DNC 2bbl carburetors on Deano Intakes
VW Round Port heads which have been ported and fly cut (9.2:1 CR), 40mm intake / 36mm exhaust valves
1 ½” KYMCO equal length 4-to-1 exhaust collector which feeds dual quiet pack exhaust
Gene Berg 3 ½ quart sump with remote oil filter

The engine makes peak power at 6800rpm and runs great.

I am considering a different exhaust to improve appearance. The current KYMCO system is 18 years old and extends nearly as far as the bumper. I want to explore options which have more “tuck”, improved ground clearance and potentially utilize the exhaust openings in the rear apron. I currently have 1 ½” heat exchanges but never use them, so I am OK to skip them on my next exhaust.

A few which caught my eye are:

Vintage Speed 38mm (1 ½”) equal length header to “super flow” muffler: https://store.vintagespeed.com.tw/38MM-HEADER-&-SUPER-FLOW-1-9-FOR-BEETLE-57-35-p132807509

Vintage Speed 38mm (1 ½”) non-equal length to “super flow” muffler: https://store.vintagespeed.com.tw/CLASSIC-SUPERFLOW-VW-BUG-EXHAUST-SYSTEM-p87513442

Am I giving up much with the non-equal length exhaust?

CSP Super-Competition: https://www.csp-shop.com/en/exhaust-heating/csp-su...7377c.html

CSP Evolution Competition in 38mm: https://www.csp-shop.com/en/exhaust-heating/csp-ev...9793a.html

The differences I see between these two CSP offerings are minor bend differences in the collector.


Are there other systems I should consider?
_________________
Keith Gilbert - DdK
1971 Super Beetle sedan, Shantung yellow with black interior. Cosmetically unrestored with over 366k miles.
1776cc: 9.2:1 compression, dual Weber 40DCN on Deano intakes, Primo Petrucci 40mm/36mm round-port heads, Crower VW284F cam, Kymco 1.5" exhaust
SSC trans with 3.78/2.25/1.48/1.04 & 4.12 Gleason R&P, Type IV output flanges, Berg Shifter
Topline front struts/springs/sway bar, Sway-a-Way rear bar, 4-wheel disc brakes
Owned since 1994: 3rd owner since new!

[Jason37]

The VS SS143 gets mentioned in these forums a lot...

https://store.vintagespeed.com.tw/Super-Sport-EL-SS143-Exhaust-Systems-c33978567



Have a read through this thread

https://www.thesamba.com/vw/forum/viewtopic.php?p=9111166&highlight=1776#9111166

[67rustavenger]

I ran a CSP EVO comp on my 67. With heater boxes.

Sounds great.
_________________
I have learned over the years.
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There's never enough time to do it right the first time. But there's always enough time to do it thrice.
GFY's Xevin and VW_Jimbo!

[Glenn]

What's wrong with dual QPs?

_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

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[Alstrup]

None of the VS mufflers are that interesting if/when your engine revs that high, as they are all shorty headers. The one that fir the bill the closest is the CSP super comp EVO.
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https://www.thesamba.com/vw/forum/viewtopic.php?t=435993

[RCP Phx]

How about dual super-trapp's specially for their size!

[Clatter]

Dang, that Kymco exhaust hangs way out there!

While the VST exhausts are tidy and supposedly sound great,
They will never perform like a true tuned exhaust header.

You really can’t compare that CSP system to what’s essentially just a can.
_________________
Bus Motor Build

What’s That Noise?!?

[QRP]

If it was my bug I would just use a hide away like this one.

[74 Thing]

I'd go CSP or make a custom hideaway with a 2" mandral bends and muffler with the tail pipe straight out the back.

[FreeBug]

Pardon my ignorance, but what is a " day two looker"?

Not sure if this helps, but on my 1900, going from dual to single QP, it "felt" like it was putting out more power. It was far from being an ideal combo, though...and feelings are unreliable sources of data.

[Olli from NJ]

Here is another option.
http://vwparts.aircooled.net/A-1-Sidewinder-Muffler-Beetle-with-Drum-Brakes-p/a1-sw-dual.htm

[txoval]

Is the 6800 dyno proven or seat of the pants?

CSP is definitely a nice setup, but all of the piping would drive me crazy (just a me thing).

Alstrup could provide #’s, but what kind of change is he really looking at switching to VS’s exhaust? They are nice quality systems, simple to install, but damn the prices have gone up.

[jeff68]

I like dual quiet packs as well. This is a Berg 933s that’s been modified with a vband to install an A1 dual quit pack muffler.

[jeff68]

Sorry, I posted one of the pics twice.

This is a picture from the other side.
Previously I had a fat boy or whatever they’re called and it was too low snd a bit loud for my taste.

[Lingwendil]

[Glenn]

[QRP]

[KEGZ]

Glen needs to ditch those taillights on that fat chick. You could see those brake lights from the ISS

I have a brand new "euro tuck" and one of those "hideaways" collecting dust in the garage..

https://www.mamotorworks.com/vw/product/vw-1965-19...0cc-306971

[Glenn]

[jeff68]

Thanks Lingwendil, I appreciate that!
Glenn- it goes without saying, your exhaust system looks great! I tried for a while to find an original Berg dual quiet pack muffler for a merged header (933S) but couldn’t so I had A1 make me one. It fits pretty well but the Berg dual qp tucks under the fenders a little more.