Wanted, "X" pipe for 1984
01-29-2009, 08:29 PM
#17
Rennlist Member
The 84 16 V USA will accept an X.
You just have to dual the rest of the exhaust.
But, if you put 85 headers on an 84, you need an extension section in order to match-up to the X.
You just have to dual the rest of the exhaust.
But, if you put 85 headers on an 84, you need an extension section in order to match-up to the X.
01-30-2009, 08:46 AM
#18
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Thread Starter
Chris, if anyone would know, it would be you. Like those 1984's I see. I have decided to do a "Y" pipe, Cat delete. No more emission inspections are required for me. Yahoooooooooo
01-30-2009, 10:40 AM
#19
Pro
Stephen,
I do not know if this will help, however it is what I did to my 1980 Euro S when the lousey Ansa exhaust on it finally fell apart. I went with a MagnaFlow dual in/dual out TrueX Muffler, it has a flow path that is the same as an X-pipe, and replaced the entire exhaust. The muffler was placed where the front muffler was on my Euro, where US cars have thier cat. It fit prefectly and the heat shields remaind in place. I went a with 2.25" muffler and pipes to match the exhaust manifold exit daimeter. the pipes have gentle bends, fit easily under the rear crossmember and exit in the stock location. I had the shop weld several cross braces between the pipes to keep them from rattling against each other. The exhaust is much lighter than Ansa exhaust. It has made quire a difference in the performance. The engine revs much quicker than before and I have to be careful not to hit the redline. The sound is not offensive at idle but becomes and angry shiek above 3200 RPM. The cost for the entire system was less than a X-pipe, less than 400.00 dollars three years ago. There are some photos of the exhaust on the 928OC web site, they where taken at the 2007 Wilbraham tech session. The muffler comes in two lengths and I selected the shorter of the two. I do not know if a US care will see the performance improvement my Euro did due to its lower compression, softer cams, smaller valves, ports, intake and throttle body.
Good Luck
Paul Mammorella 1980 Euro S Red/Blk Lea
I do not know if this will help, however it is what I did to my 1980 Euro S when the lousey Ansa exhaust on it finally fell apart. I went with a MagnaFlow dual in/dual out TrueX Muffler, it has a flow path that is the same as an X-pipe, and replaced the entire exhaust. The muffler was placed where the front muffler was on my Euro, where US cars have thier cat. It fit prefectly and the heat shields remaind in place. I went a with 2.25" muffler and pipes to match the exhaust manifold exit daimeter. the pipes have gentle bends, fit easily under the rear crossmember and exit in the stock location. I had the shop weld several cross braces between the pipes to keep them from rattling against each other. The exhaust is much lighter than Ansa exhaust. It has made quire a difference in the performance. The engine revs much quicker than before and I have to be careful not to hit the redline. The sound is not offensive at idle but becomes and angry shiek above 3200 RPM. The cost for the entire system was less than a X-pipe, less than 400.00 dollars three years ago. There are some photos of the exhaust on the 928OC web site, they where taken at the 2007 Wilbraham tech session. The muffler comes in two lengths and I selected the shorter of the two. I do not know if a US care will see the performance improvement my Euro did due to its lower compression, softer cams, smaller valves, ports, intake and throttle body.
Good Luck
Paul Mammorella 1980 Euro S Red/Blk Lea
01-30-2009, 11:55 AM
#20
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Ian,
The muffler I used has perforated pipes leading to a non-perforated X center section and then perforated pipes leading to the outlets. The center section is short but very large. The performance enhancement over the old Ansa system was signifanct. One the dyno proir to the change over HP was @ 263 now it is a@ 274 to 277 RWHP
Paul Mammorella 1980 Euro S Red/Blk Lea
The muffler I used has perforated pipes leading to a non-perforated X center section and then perforated pipes leading to the outlets. The center section is short but very large. The performance enhancement over the old Ansa system was signifanct. One the dyno proir to the change over HP was @ 263 now it is a@ 274 to 277 RWHP
Paul Mammorella 1980 Euro S Red/Blk Lea
01-31-2009, 02:00 PM
#21
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Steven,
I recently got and installed a Y pipe from Roger for my 84 US 928S. I also removed my air pump and all plumbing. as the air pump is also driven by the same belt as the radiator fan, I also got a small belt from Roger. so now this small belt is just for the radiator fan. Roger had me measure my pully diameter as he said there are two different possible belt sizes, 20 or 21".
once my 928 account recovers I will pursue a borla or magnaflow catback to replace the rest of the exhaust. with my cat gone, the exhaust is a bit louder but that is not my real issue. without the cat my stock rear muffler sounds like a big empty tin can. sounds good under acceleration or cruise, but when I let off the burble/pop sounds are unpleasant.
but for now, bolt in roll cage and racing seats are on the way for my DE 911 before MidOhio in April. now with both an 85 911 and my recently acquired 84 928S, my 'disease' is sucking more money out of my bank account, much to the dismay of my wife. I fear I am headed for the doghouse.
http://bewareofthedoghouse.com/video.aspx
I recently got and installed a Y pipe from Roger for my 84 US 928S. I also removed my air pump and all plumbing. as the air pump is also driven by the same belt as the radiator fan, I also got a small belt from Roger. so now this small belt is just for the radiator fan. Roger had me measure my pully diameter as he said there are two different possible belt sizes, 20 or 21".
once my 928 account recovers I will pursue a borla or magnaflow catback to replace the rest of the exhaust. with my cat gone, the exhaust is a bit louder but that is not my real issue. without the cat my stock rear muffler sounds like a big empty tin can. sounds good under acceleration or cruise, but when I let off the burble/pop sounds are unpleasant.
but for now, bolt in roll cage and racing seats are on the way for my DE 911 before MidOhio in April. now with both an 85 911 and my recently acquired 84 928S, my 'disease' is sucking more money out of my bank account, much to the dismay of my wife. I fear I am headed for the doghouse.
http://bewareofthedoghouse.com/video.aspx
01-31-2009, 03:08 PM
#23
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Thread Starter
911 tracker85, I have the Borla exhaust already and may put it on at a later date. I do not want this car to be loud and sound stupid. This is a GT type car and for me, needs to be quiet. Although, when I get on it, it should open up a bit. Will advise how this goes.
01-31-2009, 06:50 PM
#24
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Steven
+1 my 928S is a semi-daily driver so for me another cat back is just a matter of time/money.
now my 911 track car I want to sound like a race car, and it does. Love to push to redline in a tunnel.
I track with the OVR PCA, and Mike Vallentine (Valentine radar detectors) runs his CGT at our DE events occasionally. I told him his car is the only one I enjoy passing me. the shreik of that V10 is incredible.
+1 my 928S is a semi-daily driver so for me another cat back is just a matter of time/money.
now my 911 track car I want to sound like a race car, and it does. Love to push to redline in a tunnel.
I track with the OVR PCA, and Mike Vallentine (Valentine radar detectors) runs his CGT at our DE events occasionally. I told him his car is the only one I enjoy passing me. the shreik of that V10 is incredible.
01-31-2009, 07:12 PM
#25
Once that's done, all bets are off. Any leads on a euro intake, heads and cams?
02-01-2009, 02:50 AM
#26
Rennlist Member
I have a y-pipe and removed the cat and installed Borla exhaust. My only advice is to advance your timing when you're done so you really take advantage of it. Have fun!
02-04-2009, 02:41 PM
#28
Administrator - "Tyson"
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We'll know soon. I dynoed my car completely stock including the factory muffler and came up with 180rwhp. I now have the Motorsports Y-pipe installed (still factory muffler) and as soon as I fix a small coolant leak I'm headed back to the same dyno to see what the true difference is for a stock car. I'm hoping for 10hp or so, will be pleasantly surprised with any more than that without any tuning.
02-04-2009, 11:02 PM
#29
Race Car
Ian,
The muffler I used has perforated pipes leading to a non-perforated X center section and then perforated pipes leading to the outlets. The center section is short but very large. The performance enhancement over the old Ansa system was signifanct. One the dyno proir to the change over HP was @ 263 now it is a@ 274 to 277 RWHP
Paul Mammorella 1980 Euro S Red/Blk Lea
The muffler I used has perforated pipes leading to a non-perforated X center section and then perforated pipes leading to the outlets. The center section is short but very large. The performance enhancement over the old Ansa system was signifanct. One the dyno proir to the change over HP was @ 263 now it is a@ 274 to 277 RWHP
Paul Mammorella 1980 Euro S Red/Blk Lea
02-04-2009, 11:07 PM
#30
Heaven knows, I have not pulled them to check. I want to dyno the car exactly like it was earlier, just with the y-pipe installed. Then I'll start playing around with plugs, timing, and maybe something more significant. If I can work it out, I'll do all that in the same dyno session.
