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steve-o
Dodge Dakota
7/07/2001
17:56:00
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 Subject: 2.5l exhaust piping...size?
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i am gonna get a new dual rear exit exhaust custom done at an exhaust shop. my question is what size piping should i get since its a 2.5L?
2", 2 1/4", or 2 1/2" since its a dual rear exit setup i was thinking maybe 2 1/4". any suggestions or ideas.
thanks
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Bernd
Gen III
7/08/2001
10:05:20
|  RE: 2.5l exhaust piping...size?
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Message:
You really don't want to go with dual rear exit on a 4-cyl. A single 2.5" will do the job and more efficiently than a dual exit. If you are set on the dual exit look, no more than 2" on the exit pipes. This is a 4-cylinder and doesn't require large tubing for the exhaust unless you plan on major engine mods: such as turbo, nitrous, headwork, cam.
1997 Dodge Dakota SLT - V6
Supercharged @ 10#
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eddie_orlando
Dodge Dakota
7/08/2001
18:02:24
| RE: 2.5l exhaust piping...size?
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Message:
Steve-O,
long time no talk my man. we should get together sometime here in orlando to talk shop.
Ed
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steve-o
Dodge Dakota
7/08/2001
19:43:01
| RE: 2.5l exhaust piping...size?
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Message:
hey ed, i have been meaning to contact you but i have been real busy lately with work and prepping the my house for sale, my parents are actually looking into moving to a neighborhood off of dean road. so i havent been really doing anything to my dakota lately, just have a big lump of money sitting around so i will be able to get alot when i get around to it. but i have also been thinking about selling in the dak for an eclipse gsx or gst, i know, i know its an import but speed is expensive and 14.7 stock doesnt look too bad, so i figured instead of making my dak faster which would take alot, i could have a 12 second eclipse gsx for the same amount versus a 17 second truck, i am still not completely sure for many reasons but for the record what do you think your dak would run in the 1/4? mine shouldnt be to much higher than yours so if i could get an idea that would better help me make my decision.
thanks
sorry for the loooong post
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Jeffster
Dodge Dakota
7/08/2001
20:48:04
| RE: 2.5l exhaust piping...size?
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Message:
A 12 sec eclipse for less money than a 12 sec Dak.
Ha ha ha ha ha don't count on that. You got a little to caught up watching the Fast and the Furious. Apparently those so called 10 sec cars in real lif are actually 12 sec cars and it cost a lot of money to get those tiny motors to run that fast more than once down the track.
I will bet my truck with only $400 CAN in mod's will do that 14.7 this Eclipse will do and the last time I checked anyways they ran mid 15's along with the 200 HP Prelude SR. I am still about 10 grand + ahead on the Eclipse which will get me pretty close to 12's.
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Smokin
Dakota Enthusiast
7/08/2001
23:52:08
| RE: 2.5l exhaust piping...size?
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Message:
Jeffster,
With your truck and 10 grand I think a little better than 12's. A little custom headwork, a new cam, better pistons etc., polished intake, the awesome Flometrics 72mm TB,a reprogrammed comp., a Kenne Belle blower and last but not least a 50-100 shot of NO2. That would come out at a little less than 10 g's. I think I'd be pissed if I didn't run 11's with those mod's.Wish I had your truck and 10 g's right now :)
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Jeffster
Dodge Dakota
7/09/2001
00:03:37
| RE: 2.5l exhaust piping...size?
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Message:
Hey Smokin there is just one problem. A lot of those mod's don't even exsit yet but if they did that would be an explosive set up. I will not run anything higher than a 50 shot on the NOS because of the cast pistons and there are no forged pistons avaliable. I would however love to have that Kenne-Bell SC. That's got to be good for at least 80-100 HP and is available.
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steve-o
Dodge Dakota
7/09/2001
00:09:38
| RE: 2.5l exhaust piping...size?
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Message:
hey jeffster not to be a smartass or anything but did you read the subject? i have a 2.5l so getting a 12 sec eclipse costing less than making my dak 12 sec is very logical, and if you pic up the new issue of super street there are many 8 and 9 second dsm's. not to mention i have many friends that own dsm's and are well in the 12 sec range so you should do some homework and see that it doesnt take alot of money to make a 12 sec eclipse, just good planning:) i.e. remanufactured turbos, about 300 and help a huge amount like putting a 20#pulley on a supercharger on a stock 12# thats what the stock turbos run. i am also 16 and have to make all payments and insurance on my 98 slt, i have many exterior mods, and performance but i guess you wouldnt know that it is quite diffucult to make a 2.5l quicker, and buying a v8 is out of the question.
thankyou for your time and support reading my posts
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steve-o
Dodge Dakota
7/09/2001
00:12:13
| RE: 2.5l exhaust piping...size?
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Message:
also the 3rd gen eclipses run the 15s not the 2nd gen (95-99) they ditched the turbo on the 2000+ so stock is 14.7 and thats off my friends timeslip with his 2nd gen dsm with a slipping clutch and completely stock. just so you know next time you step to a dsm
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steve-o
Dodge Dakota
7/09/2001
00:35:58
| RE: 2.5l exhaust piping...size?
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Message:
in case you were wondering DSM=Diamond Star Motors
a joint corporation between mitsubishi and chrysler, yes chrysler AND mitsubishi so a dsm is a 90-99 eclipse, 90-97talon and a 90-95laser
the 2000+ is NOT considered a dsm, a little friendly history lesson for you, unless you alread knew but by judging by your mix up with the 1/4 times you didnt so no harm done just clarifying everything up
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Jeffster
Dodge Dakota
7/09/2001
02:46:05
| RE: 2.5l exhaust piping...size?
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Message:
Steve-o you never specified turning a 4 clyinder Dak into a 12 sec truck. You gave the impression that you were buying a new one. Making your 4 cylinder Dak a 12 sec truck would would be ludicrous and near impossible, practically speaking anyways I agree with you. As I said before last time I checked Eclipses were mid 15's now they are 14.7. This is why I said LAST TIME I CHECKED. I am willing to bet I run in that area now and am still about 10 grand ahead on the price of a new Eclipse.
Were you planing on going brand new? If you are talking about a used Eclipse vs a new Dak of course we can disregard all of what was just said.
No I didn't know about DSM. I am to busy making sure I can beat all the ricers I find not trying to upgrade them. (Just kidding)
One question is this. Can you just go ahead and throw a 20# pulley on a SC and that's it? How many times down the track do you think that will run without exploding. Building 12 sec vehicles are easy if you only plan on running them a few times. If you want a daily driver and being 16 I am sure you do you will realize that cars and trucks that run this fast require more than just simple pulley swaps and bolt on parts. You will need to look at the internals as well. I have seen a couple ricers run 12's at the track and dozens and dozens of V8's run faster. Speed is exspensive out of little motors and that's why it's rare to see. You should have heard the sounds all those ricers were making flying (crawling for the most part) down the track. They sounded awfull, like someone was killing them.
I remeber this guy telling me about his buddy that could kill everyone even a Viper with his Golf. I said lets check it out. Well I'll be darned, all of a sudden he says he blew his engine up. That Viper he suposedly beat is still on the streets!!
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steve-o
Dodge Dakota
7/09/2001
10:43:32
| RE: 2.5l exhaust piping...size?
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Message:
jeffster, i was thinking about buying used, like a 95-99 eclipse gst or gsx, thats the turbo, and all wheel drive turbo models. i am not to sure about throwning on a 20#pulley on a supercharger, i was just using that as an example, but i do know that on turbochargers, with a new blow off valve that you can run 20 psi of boost. like i know 5 dsm owners that all run within 11-14 sec. 1/4 miles. they too all are daily drivers. so you just have to think about the mods, plus the dsm engine was quoted "bulletproof" so the internals are very strong since it is a factory turbocharged engine, the rs's and gs's are the imports that are fun to toy with, just a plain old 4, dont hate on imports, the "riceboys"(civics with stickers and big wings, you know what im talking about) are what give import drivers a badname. and youd be suprised but just about all import drivers dread these idiots also, its like putting a dak on 13" gold wire rims, and other stupid stuff, makes the rest of daks look stupid, you know what i mean
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eddie_orlando
Dodge Dakota
7/09/2001
19:49:45
| RE: 2.5l exhaust piping...size?
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Message:
steve-o,
I have a 95' 2.5 therefore I have a DSM motor. I think it is a OHC setup versus what they do now to the 2.5's. I enjoy it and it's paid for, which is a plus. I honestly don't know what it would run the 1/4 in. Good question, we should go to Bithlo sometime to the track, never been, but would like to go!! I understand your dilemma, GSX's are sweet and I don't think anyone would blame ya for the switch!
Ed
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Jeffster
Dodge Dakota
7/09/2001
19:56:52
| RE: 2.5l exhaust piping...size?
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Message:
Good luck Steve and keep me posted. I think 12's and 11's however will require very exstensive work. We are talking stock Viper speeds here and I just don't see it being that easy with such little displacment. I know it's possible I saw what that 2.5 turbo mini van running. 12's!! That was very very impressive but that guy did a major major overhaul to do that. Anyone can make a V8 run 11's or 12's with a little cash and that wouldn't have impressed me. Him doing that with the original 2.5 sure as hell did.
Good luck
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steve-o
Dodge Dakota
7/09/2001
23:27:16
| RE: 2.5l exhaust piping...size?
IP: Logged
Message:
hey ed, in the matter of fact i was at the bithlo track last saturday night, i wouldnt run my dak as of now however, might embarass my self, but if i do end up keeping it, i will def. run it with a few more mods like 1.7roller rockers and new cam, ported tb, msd ignition all from krc. i think i could maybe run high 16s with my cold air intake, exhaust, 180 t-stat, jet stage II. but ill just have to wait and see whatever happens
jeffster i was looking at the guys minivan in the 12s at first and thought that i could get into the 12s too, but then i saw that extremely long list of mods and alterations he made, so i dumped that idea, but if you are interested at all you can check out www.dsm.org and look at some of the go fast recipes, and will see that it would only take around $500 if not less to put a gsx or talon tsi into the 12s.
TURBO the replacement for displacement:)
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eddie_orlando
Dodge Dakota
7/09/2001
23:29:40
| RE: 2.5l exhaust piping...size?
IP: Logged
Message:
steve-o,
sounds good, keep me posted, maybe we can get together and talk shop someday.
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Jeffster
Dodge Dakota
7/10/2001
00:20:34
| RE: 2.5l exhaust piping...size?
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Message:
Thnaks I will look Steve but feel leary about a 4 banger running 12's without a little more money spent on internals. Becarefull and don't push your engine to hard if you get hooked up. I am planing on 12's also but it will cost several grand.
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Snowman
Dodge Dakota
9/24/2001
19:38:11
| RE: 2.5l exhaust piping...size?
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Message:
If you really want to see the 12's with a four banger,drop a built 2.5 ford into it. You can get 600 horses from one for way less than 10 g's.
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