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So, this is what a RUF 4R exhaust looks like on the inside......
I could find no information as to what the guts of the old-school 4R looked like, and this confirmed my suspicions. I love the sexy look of my 4R, but I want to gut it out and run basically straight pipes inside the old-school lookin can. I will basically re-use the endcaps. As the project continues, I may be asking some advice from guys like Rarly who have built a few exhausts in their time
       
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04-08-2015, 02:25 PM
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Join Date: Nov 2007
Location: New Jersey
Posts: 3,112
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hey Groovie..Darin Fister at FD Motorsport will do that for you. It's really not that expensive. I've been meaning to send mine to him..just need to find the time.
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Rey....77 930 "the Mistress" |
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04-08-2015, 03:40 PM
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Is that so??? Hmmmm, sometimes it's a case of "I CAN do it, but do I have the time to spare?"
I will look into it this week. The biggest thing for me will be having both exits fully functional. |
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04-08-2015, 03:56 PM
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Crotchety Old Bastard
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That is a stock 930 muffler with 2 pipes plugged into the passenger's side end.
I'd cut a hole in the middle baffle so the large single pipe has a straight shot to the dual 180's and call it a day.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-08-2015, 04:58 PM
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That is what i figured, they just drilled a hole and (badly) welded another tip on the end of it.
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04-09-2015, 03:56 AM
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Join Date: Jul 2006
Location: S. Florida
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Gut everything out of it and weld it back together. It'll sound good and weigh less without all the steel pipes and baffles rattleing around inside it.
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04-09-2015, 10:30 AM
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It wont have that "hollow tin can" ricer honda civic buzz to it, Will it?
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04-09-2015, 04:09 PM
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Join Date: Dec 2002
Location: Long Beach, CA
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Wow, there's nothing special about what Ruf did there. Also, that center baffle looks like a bad idea. Is the perforated single tube okay as is, or would a longer straight tube be better?
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04-09-2015, 05:48 PM
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Crotchety Old Bastard
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Quote:
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-09-2015, 07:49 PM
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Banned
Join Date: Nov 2001
Location: top of 3rd
Posts: 4,336
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Brian, we were doing our best RIIIIIIIIIICOLLLLLLLLLLLLLLA impressions with yours last night after some - ahem - inspiration:
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04-10-2015, 04:54 AM
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Registered User
Join Date: Oct 2010
Location: Southern NH
Posts: 3,553
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what's this crap... you're in NJ so it can't be real...
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04-10-2015, 04:59 AM
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Quote:
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04-10-2015, 06:26 AM
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Crotchety Old Bastard
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I wouldn't call it a buzz, more of a boom. The gutted stock mufflers can be very loud. Yours has the quad tips which are the most loud. Sound level enjoyment is very individual so you decide how much baffling to remove.
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04-10-2015, 08:29 AM
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Join Date: Nov 2007
Location: Rockwall, Texas
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Same deal with the hammer, and I think I see some rope there, too! |
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04-10-2015, 09:21 AM
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Join Date: Nov 2001
Location: top of 3rd
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lolzor'z
that's my boy's Air Soft pistol... pretty damn good replica! So much so that my neighbor who hand carves custom 1911 ivory grips bolted that spare set of pearl grips to it - direct bolt up to a replica / toy! heh... stop. HAMMAHTIME! |
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04-10-2015, 12:01 PM
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Location: S. Florida
Posts: 7,249
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I couldn't see a hammer on it so I figured it was a toy one and a lot of the 1911 style air pistols can have real 1911 grips screwed on.
The side looks pretty good though.. there's a pin thats probably fake and the name and serial number are usually engraved on real ones near the trigger and it looks like there is something written there. |
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04-10-2015, 12:20 PM
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beancounter
Join Date: Jan 2008
Location: Weehawken, NJ
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Quote:
Quote:
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Jacob Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690 Past: 2009 997 Turbo Cab / 1979 930 |
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04-10-2015, 01:33 PM
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Crotchety Old Bastard
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It has had the sound deadening material removed. If you look closely the large flame tube deadheads into a baffle and has to re-enter another baffle to get to the dual 180 tube chamber. It's an abomination.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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04-10-2015, 05:43 PM
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Wow, very restrictive
I....must...fight...thoughts....of deviating...from.....perfect stock.....condition |
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04-11-2015, 06:23 AM
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Well, as far as "personal preference" on volume, I run one of your Zorks, and I love that sound, to me it is perfect.
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04-11-2015, 01:37 PM
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| Tags |
| 930 , exhaust , ruf 4r , ruf 930 |
"Hexe" German for "Witch"
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
1971 Porsche 911 T Targa
