I just got my elbows in from mcmastercarr and I got the 2" ones instead of the 1.5".......I figured 1.5 would be pretty small but now I see alot of people use it. They dont have 1 3/4 just 1.5 or 2.

 

2" Pipe or Tubing?

I'm assuming you mean 2" s/10 pipe, correct?

 

2" OD tubing 16 guage

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rewsnaeht &raquo;</TD></TR><TR><TD CLASS="quote">2" OD tubing 16 guage</TD></TR></TABLE>

Boy, I off on everything today. haha

 

so is it the right size?

 

right size for what?

 

tubular manifold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rewsnaeht &raquo;</TD></TR><TR><TD CLASS="quote">tubular manifold.</TD></TR></TABLE>

SIDE NOTE:

Here are the ID's for 1.5" s/10 pipe and 2" .065" tubing:

1.5" s/10 ID: 1.68"
2" .065 ID: 1.87"

 

oh yea i keep forgetting pipe goes by ID and tubing goes by OD.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rewsnaeht &raquo;</TD></TR><TR><TD CLASS="quote">oh yea i keep forgetting pipe goes by ID and tubing goes by OD.</TD></TR></TABLE>

Pipe doesn't necessarily go by ID but some people refer to it that way. I just figured I'd give the ID's of both the pipe and tubing and you (or others) can determine if the 2" 065 would be too large for your application.

 

this might be stupid, but whats the difference between pipe and tube?

And a side note, whats the deal with the ads under the first post?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adictionbass &raquo;</TD></TR><TR><TD CLASS="quote">this might be stupid, but whats the difference between pipe and tube?

And a side note, whats the deal with the ads under the first post?</TD></TR></TABLE>

yea I just noticed that about the ads. and I THINK piping is thicker than tubing, sched 10, sched 40 and whatnot. BTW should 16ga tubing hold up will, or will I absolutely have to brace it?

 

First of all- are we talking about a tubular INTAKE or tubular EXHAUST manifold? If you're building an intake for forced induction it doesn't matter. If you're building an intake for natural aspiration then the diameter all depends on engine size/rpm/usage (drag, roadrace, daily, etc).
If you're building an exhaust manifold and it's a log type, you shouldn't have anything to brace. However, if you're building a log you should use weld fittings instead of mandrel bends because they will hold the heat better and be less prone to cracking.
Finally, if you're building a tubular exhaust manifold (which I suspect you are, I was just covering all the bases) you should definately brace it.

I ran an un-braced tubular manifold and got about 100 miles from home, did a day of tuning, and then the merge collector broke. I ended up driving back home basically running an open head. I mean, there was some tubing there but only about 6" of it between the exhaust valves and the atmosphere.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adictionbass &raquo;</TD></TR><TR><TD CLASS="quote">this might be stupid, but whats the difference between pipe and tube?</TD></TR></TABLE>

It's not a stupid question at all.

Tubing is measured on the OD and pipe is theoretically measure on the ID. Pipe OD is the accepted industry standard and is not the actual measured size. Pipe size is technically called out as a "nominal pipe size" because the outside diameter is not actually the size listed. Example: 1" pipe actually has an OD of 1.315"

All pipe OD is the same no matter what type of material or alloy you are working with. However, the ID and schedule (wall thickness) may vary due to the differences in tolerances or manufacturing techniques between mills.

I will try to add more later.