Will a 2.125" OD pipe fit tightly within a 2.25" OD pipe? Or to phrase it another way...what is the ID of a 2.25" OD pipe?
Thanks
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Depends on the thickness of the pipe (or tubing, if you're talking exhaust).
Phil,
There are tables online that list id's and od's of most sizes of pipe and tubing. As you likely know, one of the main differences is that pipe has thick walls while tubing has thinner walls. For you scenario above, the wall thickness of the 2.25" pipe would have to be less than 1/8" or .125 for a 2.125" pipe to slide inside.
Thanks guys. Just got my new header in yesterday. Going to get under the car this weekend to see if it will fit. Kind of doubt it. Looks like header outlet will point directly at left rear frame with no room to spare. Stinks. Stock manifold needs to go. Custom building a header I'm sure is crazy expensive. Maybe I'll just live with the stock manifold and just place a sweet sounding muffler.
Tubing and pipe are also measured differently; I believe pipe is measured by the inside diameter while tubing is the outside diameter and does come in different wall thicknesses.
Thought this was very helpful. It does get a bit confusing.
Phil,
Muffler shops have an expander tool enlarges the end of tubing so that one piece of tubing can slide into another piece. You could bring the two pieces in question to the shop and have them enlarge one just enough for a good fit. I've always found that muffler guys are car guys, and that they enjoy the occasional oddball job.
ALB posted:Tubing and pipe are also measured differently; I believe pipe is measured by the inside diameter while tubing is the outside diameter and does come in different wall thicknesses.
Close, except for the "ID" part. Pipe sizes are "nominal"-- they measure neither I/D or O/D, they're just a nominal size.
1/2" Schedule 40 BIP (black pipe, threaded) has an O/D of .840 and an I/D of .622. Schedule 80 pipe in the same size has the same O/D, but the wall-thickness is greater, so the I/D is .546. Nowhere is there something that is 1/2" (.5).
1/2" copper pipe actually measures 5/8" O/D, and has an I/D that varies by wall-thickness-- but copper (unlike PVC or BIP) doesn't use "Schedule" for wall thickness, they use a letter designation: "K" is thicker than "L" which is thicker than "M". You can buy both "M" and "L" at the home improvement center. Get "L".
Where it gets SUPER fun is that pipe-fitters use the O/D dimension (tubing) sizes for copper. 5/8" ACR is just 1/2" "L" copper evacuated and dry-charged with nitrogen and capped. 1/4" ACR is 1/8" nominal, 3/8" is 1/4", 1/2" is 3/8", etc-- right on up the food chain up to about 3-1/8" ACR (which is 3" "L" nominal). Simple, no?
It gets super-cool when you get into plastics. CPVC is the same O/D as copper, so 3/4" CPVC has the same O/D as 3/4" "M" or "L", or 7/8" ACR. PVC uses BIP sizing, so 3/4" PVC is the same O/D as 3/4" Schedule 40 or 80 iron pipe.
Sch 40 PVC is pressure rated, but only with pressure rated fittings. It can also be used with DWV (drain with vent) fittings, which are good for waste piping (and vents), but not for potable water supplies. If you intend to run waste drains or vents, you can use "cell-core" DWV PVC which has the same I/D and O/D as Sch 40, but which is also not presure rated. Your home improvement center sells both, just to keep it confusing.
... tubing, on the other hand, is elegant. 1-1/2" tube is 1-1/2" OD. Wall-thickness varies, but the O/D is legit.
The world should be so simple.
Mr. Stan, may I be excused now? my brain is full.
(technically he may be correct, but I like my explanation better...
)
I knew all that.......I just forgot 110% of it over time. I'm also tall and good looking. OK maybe not.
Stan Galat, '05 IM, 2276, Nowhere, USA posted:ALB posted:Tubing and pipe are also measured differently; I believe pipe is measured by the inside diameter while tubing is the outside diameter and does come in different wall thicknesses.
Close, except for the "ID" part. Pipe sizes are "nominal"-- they measure neither I/D or O/D, they're just a nominal size.
1/2" Schedule 40 BIP (black pipe, threaded) has an O/D of .840 and an I/D of .622. Schedule 80 pipe in the same size has the same O/D, but the wall-thickness is greater, so the I/D is .546. Nowhere is there something that is 1/2" (.5).
1/2" copper pipe actually measures 5/8" O/D, and has an I/D that varies by wall-thickness-- but copper (unlike PVC or BIP) doesn't use "Schedule" for wall thickness, they use a letter designation: "K" is thicker than "L" which is thicker than "M". You can buy both "M" and "L" at the home improvement center. Get "L".
Where it gets SUPER fun is that pipe-fitters use the O/D dimension (tubing) sizes for copper. 5/8" ACR is just 1/2" "L" copper evacuated and dry-charged with nitrogen and capped. 1/4" ACR is 1/8" nominal, 3/8" is 1/4", 1/2" is 3/8", etc-- right on up the food chain up to about 3-1/8" ACR (which is 3" "L" nominal). Simple, no?
It gets super-cool when you get into plastics. CPVC is the same O/D as copper, so 3/4" CPVC has the same O/D as 3/4" "M" or "L", or 7/8" ACR. PVC uses BIP sizing, so 3/4" PVC is the same O/D as 3/4" Schedule 40 or 80 iron pipe.
Sch 40 PVC is pressure rated, but only with pressure rated fittings. It can also be used with DWV (drain with vent) fittings, which are good for waste piping (and vents), but not for potable water supplies. If you intend to run waste drains or vents, you can use "cell-core" DWV PVC which has the same I/D and O/D as Sch 40, but which is also not presure rated. Your home improvement center sells both, just to keep it confusing.
... tubing, on the other hand, is elegant. 1-1/2" tube is 1-1/2" OD. Wall-thickness varies, but the O/D is legit.
The world should be so simple.
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stfu, Stan. Jesus Christ.....
edsnova posted:stfu, Stan. Jesus Christ.....
People really hate plumbing (and rightly so) for reasons such as this.
So, which is longer - five feet of Schedule 40 or five feet of Schedule 80?
Sacto Mitch posted:
So, which is longer - five feet of Schedule 40 or five feet of Schedule 80?
Trick question. It's the "L" copper.
Sacto Mitch posted:
So, which is longer - five feet of Schedule 40 or five feet of Schedule 80?
Yes.