elbow size

[csomni]

looking into ordering a cast alum 90* elbow to do some work on my log intake. when they say 2" is it id or od.

[6daytonas]

Generally, ID...

[csomni]

thanks that will help out alot

["Top Fuel" Bender]

Pipe is supposed to be I.d.
tubing should be o.d.

["Top Fuel" Bender]

Pipe is supposed to be I.d.
tubing should be o.d.

[Dave]

Any pipe is to be measured as OD. That's basically the standard.

[csomni]

so when you mesure the outlet of the compressor housing you mesure od

[Dave]

Yes exactly. You buy a coupler for a 2.5" OD pipe and the coupler is 2.5" ID to fit over the pipe.

Measuring pipe OD is an industry standard; every exhaust related vendor I deal with at work refers to all tubing parts as OD unless otherwise mentioned for slip fit purposes.

[csomni]

thanks, that will save me from ordering the wrong part