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Fed
GenII
 
8/27/2006
20:52:27
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 Subject: Dent in Y-Pipe = new exhaust
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Message:
found that theres a pretty good sized dent in my Y-pipe..
that means im gonna SEE how much it is to get
new piping installed from the end of the
stock headers all the way over the axle,
Question is... what size should i go with?
i was told 2.5" is the best width for the 3.9,
im gonna buy the dynomax 17748 super turbo
muffler to go with it
one thing though, my engine should be producing
at LEAST 230 horsepower and 300 ft. lbs. of
torque when its put together so i dont know if
i should go with wider piping or not cuz of that.
your thoughts are greatly appreciated
1993 Dakota CC 3.9 auto
(4.10 gears, LSD, exhaust, intake, lowered 5/5, rear anti-sway bar)
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screwuphead
Dodge Dakota
JOIN HERE
8/28/2006
00:56:19
|  RE: Dent in Y-Pipe = new exhaust
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Message:
I was always told to go with a 3" pipe and get the y-pipe done while your at it, not too sure what size to make the y-pipe but it increase your power.
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N56629
Dodge Dakota
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8/28/2006
06:37:08
| RE: Dent in Y-Pipe = new exhaust
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Message:
I don't know about the v6 but the v8 y-pipe comes stock with a pretty good size clearance dent. The y-pipe is probably the single best mod to your exhaust you can make. Two and half-inch exhaust should be sufficient for 230 hp. The only thing the larger diameter will do is change the tone of the exhaust.
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bludak
Dodge Dakota
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8/28/2006
09:28:33
| RE: Dent in Y-Pipe = new exhaust
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Message:
Stick with the 2.50 inch piping. Any larger will take away bottom end power and move it up the rpm range.
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Fed
GenII
8/28/2006
11:28:18
| RE: Dent in Y-Pipe = new exhaust
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Message:
okay thanks..
im guessing the Y-pipe diameter is around 2.25? or less?
1993 Dakota CC 3.9 auto
(4.10 gears, LSD, exhaust, intake, lowered 5/5, rear anti-sway bar)
|
screwuphead
Dodge Dakota
JOIN HERE
8/28/2006
11:49:09
| RE: Dent in Y-Pipe = new exhaust
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Message:
i always thought it was 2" idk i never messed with it. Even though i know i should replace mine.
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Brandon
Dodge Dakota
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8/28/2006
13:41:32
|  RE: Dent in Y-Pipe = new exhaust
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Message:
What kind of performance would I be looking at if I install a JBA y-pipe? Is it worth spending $180 from summitracing.com?
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Fed
GenII
8/28/2006
16:24:10
| RE: Dent in Y-Pipe = new exhaust
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Message:
Are you sure there's a JBA Y-pipe available for
a 3.9?
I just searched summitracing and could'nt find
anything..
1993 Dakota CC 3.9 auto
(4.10 gears, LSD, exhaust, intake, lowered 5/5, rear anti-sway bar)
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Jim
Dodge Dakota
JOIN HERE
8/28/2006
21:36:21
| RE: Dent in Y-Pipe = new exhaust
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Message:
Yeah I saw that also. Here is the link:
http://store.summitracing.com/partdetail.asp?autofilter=1&part=JBA%2D2945Y&N=700+4294908110+4294840047+115&autoview=sku
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Carson
Dodge Dakota
JOIN HERE
8/28/2006
22:01:23
| RE: Dent in Y-Pipe = new exhaust
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Message:
is that also applicable (sp?) with the 02 2.9?
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J and J Auto
GenII
8/28/2006
22:46:19
| RE: Dent in Y-Pipe = new exhaust
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Message:
something here scares me outlet size should be
2.5 not 2
you would have to drill and weld an o2 bung in
Larry
J&J Auto
|
works2long
Dodge Dakota
JOIN HERE
8/28/2006
23:20:18
| RE: Dent in Y-Pipe = new exhaust
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Message:
larrys right i took out the 2 cats put in 2.5 inch pipe and lost low end power
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screwuphead
Dodge Dakota
JOIN HERE
8/28/2006
23:41:20
| RE: Dent in Y-Pipe = new exhaust
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Message:
Lerry i know the actual tail pipe is 2.5 but the pipe leading to the y pipe is 2" isnt it?
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Fed
GenII
8/29/2006
01:58:00
| RE: Dent in Y-Pipe = new exhaust
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Message:
alright im officially confused...
Larry, from the headers back - what size y-pipe piping should i use with my application?
thank you!
1993 Dakota CC 3.9 auto
(4.10 gears, LSD, exhaust, intake, lowered 5/5, rear anti-sway bar)
|
?
Dodge Dakota
JOIN HERE
8/30/2006
00:37:22
| RE: Dent in Y-Pipe = new exhaust
IP: Logged
Message:
?
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J and J Auto
GenII
8/31/2006
00:23:14
| RE: Dent in Y-Pipe = new exhaust
IP: Logged
Message:
yes 2" but the outlet were they come togather
should be 2.5 and 2.5 all the way back muff and
cat also 2.5
were the y goes into the system cant be 2" thats
way to small
the 92 93 were 3"
I would call JBA and ask them about this unless
summit just listed it wrong they had to because
you would have to go from 2 ti 2.5 to hook up
Yes lowering the back pressure will drop the
low end power unless your getting more in to the
motor
however if your porting running nitrious or boost
and running higher rpm than you want all the
flow you can get
Larry
J&J Auto
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screwuphead
Dodge Dakota
JOIN HERE
8/31/2006
02:36:40
| RE: Dent in Y-Pipe = new exhaust
IP: Logged
Message:
but what if i wanted 3" all the way back would i go with a 2.25 pipe to the y-pipe and then make that to the 3"?!
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J and J Auto
GenII
9/05/2006
22:30:34
| RE: Dent in Y-Pipe = new exhaust
IP: Logged
Message:
2.25 and 3" will give you more top end power and
on a motor with more work done will not effect
it much
more flow porting exct will off set this
I have them setup both ways the only noticeable
diff is a little stronger top end with the
bigger pipe if the intake side is improved its
fine
Larry
J&J Auto
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