Pipe sizes ? Please save my sanity.
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Pipe sizes ? Please save my sanity.
Please save my sanity. The guy at the exhaust shop is ordering me a 3 inch pipe for between the cat and the muffler. I measured the pipe, and it is 3 inches in the middle and 2 3/4 near the ends (like a foot away from the ends). And it goes INTO a 2 1/2 inch muffler clamp. Also, the 3 inch pipe has an indentation in it which brings it down to a 3 inch x 2 inch where it goes over a suspension part just before the muffler. Is this what a 3 inch pipe behaves like ? Also, how do you measure an exh pipe? I've been using a c clamp.
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88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal.
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88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal. 
Member
Joined: Dec 1999
Posts: 262
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From: O.C.,SoCal
A quality name brand 3" exhaust intermediate pipe should have NO tapers, or indentations. They have all mandrel bends. Hooker, Flowmaster, Banks, Dynomax, and many others. Who is this shop getting this piece from? It sounds homemade. I would recommend canceling your order and getting a quality name 3" cat-back from Summit or other source. It will come with a 3" in/out muffler also.
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).
Thread Starter
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Joined: Jul 1999
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It's a Mieneke shop, and the guy told me the name of the company he was ordering from, but I have forgotten it. I had heard of it before, though. It wasn't one of those you mentioned. He is charging $100 parts and labor total. Midas wanted $195 for the same.
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88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder than normal.
------------------
88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal. Thread Starter
Senior Member
Joined: Jul 1999
Posts: 760
Likes: 3
<font face="Verdana, Arial" size="2">Originally posted by calroc:
A quality name brand 3" exhaust intermediate pipe should have NO tapers, or indentations. They have all mandrel bends. Hooker, Flowmaster, Banks, Dynomax, and many others. Who is this shop getting this piece from? It sounds homemade. I would recommend canceling your order and getting a quality name 3" cat-back from Summit or other source. It will come with a 3" in/out muffler also.
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).</font>
A quality name brand 3" exhaust intermediate pipe should have NO tapers, or indentations. They have all mandrel bends. Hooker, Flowmaster, Banks, Dynomax, and many others. Who is this shop getting this piece from? It sounds homemade. I would recommend canceling your order and getting a quality name 3" cat-back from Summit or other source. It will come with a 3" in/out muffler also.
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).</font>
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88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal. Thread Starter
Senior Member
Joined: Jul 1999
Posts: 760
Likes: 3
<font face="Verdana, Arial" size="2">Originally posted by calroc:
A quality name brand 3" exhaust intermediate pipe should have NO tapers, or indentations. They have all mandrel bends. Hooker, Flowmaster, Banks, Dynomax, and many others. Who is this shop getting this piece from? It sounds homemade. I would recommend canceling your order and getting a quality name 3" cat-back from Summit or other source. It will come with a 3" in/out muffler also.
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).</font>
A quality name brand 3" exhaust intermediate pipe should have NO tapers, or indentations. They have all mandrel bends. Hooker, Flowmaster, Banks, Dynomax, and many others. Who is this shop getting this piece from? It sounds homemade. I would recommend canceling your order and getting a quality name 3" cat-back from Summit or other source. It will come with a 3" in/out muffler also.
Measuring with a c clamp is ok, or you can measure the diameter with a string or cloth tape measure and divide it by PI (3.14....).</font>
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88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal. Member
Joined: Dec 1999
Posts: 262
Likes: 0
From: O.C.,SoCal
Yes, everything from the cat on back.
Prices vary. Off the top of my head, Summit sells the Flowmaster American Thunder system for about $230.00. The Edelbrock is $275 or so. I don't know the price for the Hooker or Dynomax.
www.summitracing.com
Prices vary. Off the top of my head, Summit sells the Flowmaster American Thunder system for about $230.00. The Edelbrock is $275 or so. I don't know the price for the Hooker or Dynomax.
www.summitracing.com
Supreme Member
Joined: Jul 1999
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C=pi*d
circumferance=pi times the diameter
d=C/pi
get a tape measure and you can find any circular diameter measurement.
My 3" Dynomax pipe does not act like this. The only place that it is not 3" is over the axle where it has a small flat spot. Just get a whole catback. I wish I did.
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-Tas
'89 Formula WS-6
305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....
To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship
:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz
circumferance=pi times the diameter
d=C/pi
get a tape measure and you can find any circular diameter measurement.
My 3" Dynomax pipe does not act like this. The only place that it is not 3" is over the axle where it has a small flat spot. Just get a whole catback. I wish I did.
------------------
-Tas
'89 Formula WS-6
305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....
To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship
:Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz
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From: Vancouver, BC, Canada
Midas can charge more because they mandrel bend (atleast up here they do) so they can be better for custom exhaust, but like others say no indentation or kinks, I would cancel and get a catback, you can install in your drive way to save money or get someone reputable at and exhaust shop to install.
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1989 Trans Am GTA, 5.7L TPI, TH700-R4, T-Tops, dual cats, 9-bolt rear, 3.27, Dynomax muffler, K&N
1992 Camaro RS, 5.0L TBI, T-5, T-Tops, 3.08, L69 Dual Snorkel, K&N - Sold
Theme song for my GTA Cake - The Distance
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1989 Trans Am GTA, 5.7L TPI, TH700-R4, T-Tops, dual cats, 9-bolt rear, 3.27, Dynomax muffler, K&N
1992 Camaro RS, 5.0L TBI, T-5, T-Tops, 3.08, L69 Dual Snorkel, K&N - Sold
Theme song for my GTA Cake - The Distance
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