Re: Exhaust Pipe Measurements

From: Kyle Kozubal (grndak4x4@home.com)
Date: Fri Apr 14 2000 - 18:55:21 EDT


> I got under my Dak today to see exactly what pipe sizes I have. The ONLY
> work I have done on the exhuast is having a new catalytic converter put in
> after the stock on broken down internally at 75,000 miles(over 2 years
ago).
> Here is what I found using a digital caliper:
> -Pipe from the factory 'y-pipe' to the catalytic converter is a large 3
> inches.........
> -The 'replacement catalytic converter' is 2.75"; both inlet and outlet.
The
> muffler place probably didnt have a 3" catalytic converter so they just
> welded on a 2.75" converter and just loaded up the welds to make up for
> difference, the weld lines are rather large and nasty looking. I wish I
> would have measured the factory converter size, but I bet it would have
been
> 3" also.....oh well......live and learn..........
> -There is a 3" small piece of pipe welded to the outlet of the cat, once
> again with large nasty welds connected to a reducer, it really looks like
a
> crappy job now that I look at it, done by the muffler shop who replaced
the
> cat I am sure, definately not a factory job.............
> -The muffler inlet starts out a 2.75" and then goes down to
2.5"...........
> -The muffler outlet is 2.5" ..........
> -Pipe after the muffler is 2.5"........
> When I get a new muffler put in, I will have the muffler shop get rid of
all
> the nasty reducers, couplers, and pipes between the catalytic converter
and
> the muffler. I found a really good muffler shop who does nice custom work
> close by, where I am going to take my Dak to for all this work.
> So whatcha think? Should I just get a Dynomax Super Turbo which will come
in
> the 2.75" size and match up really nice with the catalytic converter 2.75"
> pipe and then just use a reducer to match up with the 2.5" exit pipe?? The
> muffler choice is between a Super Turbo or a Flowmaster 3chamber Delta
Flow.
> The Flowmaster I can only get in 2.5" size, which would match up nicely
with
> the 2.5" exit pipe, but not with the 2.75" catalytic converter pipe.
Nothing
> is easy, is it!!!! Any suggestions???

Or should I slap a 3" Super Turbo/Flowmaster into place and use a 3"-2.5"
reducer?
Kyle
93 Dakota 4x4 V6



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