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After these mods, what can I expect?
85 US 3.2
K&N replacment filter (yeah yeah) Euro -Premuff Magnaflow Performance (1 in 1 out) ???? Any Ideas of what HP I might be at? Steve W Chip is next (next month)
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85 911 SuperSport No more looking! The jewel is mine! 89 Jeep Wrangler A jewel in the rough 2000 Grand Cherokee Family Wagon with Jewels on board |
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04-16-2004, 02:14 PM
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Me like track days
Join Date: Sep 2003
Location: Kirkland, WA
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7
Craig @RS
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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04-16-2004, 02:33 PM
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7? That's less then 5% total. Im sure it is more then 7HP
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85 911 SuperSport No more looking! The jewel is mine! 89 Jeep Wrangler A jewel in the rough 2000 Grand Cherokee Family Wagon with Jewels on board |
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04-16-2004, 02:38 PM
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After actually rebuilding one of these motors here's what I'm convinced builds HP.
Cams, compression(this includes artificial compression such as a turbo) and cubic inches. All the rest is just equipment to facilitate the above.
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Tim 1973 911T 2005 VW GTI "Dave, hit the brakes, but don't look like your htting the brakes...what? I DON'T KNOW, BRAKE CASUAL!!!" dtw's thoughts after nearly rear ending a SHP officer |
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04-16-2004, 02:41 PM
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Moderator
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Quote:
A little TLC in asembly never hurts though 
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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04-16-2004, 02:46 PM
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
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Quote:
to have spent a not insignificant sum of money to have a 911 that sounds really cool to have a cleaner engine compartment (assuming a K&N cone filter) a few more hp than you had before, but not many These motors including intake and exhaust are pretty highly developed, getting hp out of them is not easy. The most important thing that you added was the premuffler. The muffler will probably just make more noise, and the K&N has been rumored (I think there was a test with dyno results) to actually lower hp.
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa  SOLD 2004 - gone but not forgotten
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04-16-2004, 02:47 PM
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Well I'm not looking for anyone to say 40HP or anything, I mean I did notice a difference when I did the mufler alone so I'm satisfied already. The Premuff is being installed as we speak. So i expect a little more spank in the rear around 4pm when I pick her up.
I just want to be able to throw out a number when someone ask about how much HP I have.
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85 911 SuperSport No more looking! The jewel is mine! 89 Jeep Wrangler A jewel in the rough 2000 Grand Cherokee Family Wagon with Jewels on board |
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04-16-2004, 02:54 PM
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Non Compos Mentis
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Location: Off the grid- Almost
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When people ask me how much horsepower my '73 has with the 3.2, SSI, Triad, yada yada, I tell them the absolute truth.
I don't know. |
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04-16-2004, 02:56 PM
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ok..how about 10?
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04-16-2004, 03:06 PM
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Quote:
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04-16-2004, 03:18 PM
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Ok fine, i'll just keep it a big secret.
thank's!
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04-16-2004, 03:22 PM
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Just tell them- "If I told you then I would have to kill you."
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Tim. 1988 911 Carrera. Silver. 1973 914 Metalic Blue. 2012 Cayenne S |
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04-16-2004, 03:28 PM
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Me like track days
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7
And thats my final answer. Or.....you can delude yourself into thinking it is more Craig @RS
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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04-16-2004, 03:30 PM
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+/- 215 hp.
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04-16-2004, 03:32 PM
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I just installed a premuffler last night along with a new O2 sensor. Now, my '87 has 107K on it, and I'm pretty sure the cat was the original, and the O2 sensor probably was too. So any changes regarding those two items had to improve performance.
I noticed quite a difference after the install. Of course Fabspeed tells me 14HP from the premuffler alone, I find that very hard to believe. But considering how old everything was (I'm sure the cat was clogged up tough, and the O2 seemed non functional), I may have gotten close to that. Who really knows, and honestly I don't care. I do know my car runs better today than it did yesterday. 
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Josh '87 911 Carrera 3.2 Coupe |
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04-16-2004, 03:34 PM
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Smithers: did you have sport mufler on it? Is it louder now? If so, much louder?
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85 911 SuperSport No more looking! The jewel is mine! 89 Jeep Wrangler A jewel in the rough 2000 Grand Cherokee Family Wagon with Jewels on board |
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04-16-2004, 03:36 PM
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Now in 993 land ...
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It may *feel* faster, because it is louder. Before the next mod, go to the dyno or buy at least a G-tech meter. I agree with others, the power you released with your modifications is probably marginal.
George |
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04-16-2004, 03:37 PM
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I doubt it is marginal. I am SURE I am in the 10HP range at the least
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85 911 SuperSport No more looking! The jewel is mine! 89 Jeep Wrangler A jewel in the rough 2000 Grand Cherokee Family Wagon with Jewels on board |
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04-16-2004, 03:38 PM
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No sport muffler, original. Not too much louder at all. I actually was a bit disappointed by the lack of loudness.
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Josh '87 911 Carrera 3.2 Coupe |
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04-16-2004, 03:40 PM
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I dynoed before and after with my Euro style pre-muffler and gained 7-8 HP at the wheels. I also did a few tests with an aftermarket sport muffler vs. OEM and the sport muffler (can't remember the brand - maybe Dansk or Borla) actually lost a few HP.
So you probably gained from 5-10 HP at the wheels (depending on whether your muffler helped or hurt). Also, I am told the the pre-mufflers that are shaped like the OEM cat pipe (as opposed to the straight through cat bypass deals) are much better for gaining HP. Your car is something like 207 stock. So Eric's statement of 215 is right on. A chip should help you quite a bit more as the 84-86 cars were not really optimized very well. If you really want to know, schedule some dyno time. Bill 87 Carrera
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Bill |
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04-16-2004, 03:47 PM
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1973 Porsche 911 2.4 MFI
1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
1979 Porsche 911SC 3.0
1988 Porsche 911 3.2
