I am building a TID and want to know what size inlet is on the turbo side. My pipe will be 3" so I will need an adapter to go from 3" to ?? If it make a difference my turbo is an S5.
Thanks

 

It's 60mm. A 2.5" coupler with clamp down onto it fine.

 

Thanks!

 

i have an s4 turbo and it was only 2" i dunno if s5 is different

 

Yeah ? I made a TID for my T2 with S5 turbo....I used a 3"-2"..

 

It was not 2".

 

mine is 2"

I have a stock S5 turbo...

edit: TID how to: http://1300cc.com/howto/how2/TID.htm

 

Eage8 made a good point to me. The couplers are for putting together pipes..not being the exact size themselves. A Home Depot couplers (advertised as a 3"-2") is actally about a 4"-2", when measured. It is advertised for the size pipe that will fit inside it. So yes, a 2.5" ED (external diameter, most are not advertised as this, beware) will fit perfectly. In Home Depot, you would get a 3"-2" Internal Diameter coupler.

 

Oh, jeez...

Go and put a damn ruler on it. It is not 2"! All FC's have the same compressor housing, and the inlet measures exactly 60mm (~2-3/8").

 

the original question was not "what size is my turbo inlet" it was "what size adapter do I need" and I still stand by my answer of a 3" - 2" reducer, because it works.

edit: I just re-read it... and yes he asks both questions... but yeah... I still stand by my answer...

 

Interesting.....

 

Get the calipers out !!

 

so the inside of it is 2"... a reducer for a 2" pipe would be right? I'm pretty sure pipes are measured from the inside edge...

 

Oh if they weren't at work trust me I would have.

 

Pipes are measured by nominal size which is neither inside or outside diameter. They are all measured this way untill you get to 14" pipe which is measured by the OD.

http://www.google.ca/search?hl=en&lr...ition&ct=title

So the ID of the Turbo isn't going to be 2" nor is the OD, it's nominal size, so the 2" reducer is actually for a 2.5" pipe.

 

Jebuz, I think I've stepped into an intelligence vacuum...

The OUTSIDE diameter of the turbo inlet is 60mm. A 2.5" coupler (~63mm INSIDE diameter) will work fine. That is all that matters. Why is this so frickin' hard to understand?

 

Yah.

See attached picture.

Note, this is a 3"-2" reducer coupler.

Just about 2-3/8" INTERNAL DIAMETER. Which would basically fit right on the turbo inlet. Err, 2.5"? Why?

 

If this is directed at me, I was backing you up. But pulling your head out of your *** for air and to clean your eyes from **** is a good idea from time to time.

 

I stated this earlier, it's going by NOMINAL PIPE SIZE, it's made for a 2" Pipe but the OD is not 2" it has a NOMINAL SIZE OF 2" SURE,but it's going to be more because thats how it's measured, Thats why the 2" coupler fits.

Maybe I didn't explane it well enough, but if you just do a little research something might pop up.

 

Because most aftermarket couplers and reducers for automotive use are sized in half-inch increments (2", 2.5" 3", etc), and are sized on their inside diameter. That looks look a cheap 'n' nasty plumbing coupler...

 

Exactly, AUTOMOTIVE, but the arguement was about Home Depot Style, not automotive, I have the HD TID. I think is was like 20bucks, apposed to the metal 45* and couplers that would cost closer to 100 bucks. Don't get me wrong, using silicone type couplers would be way better, but real expensive, why do something one way when it can be done cheaper another?

Sure it might be the right way, but it's still cheaper and 75%of second gen owners are broke college/hs students.

BTW even IC, and Exhaust tubing is measured in nominal pipe size so I bet the couplers for those are still over sized.

 

We all would like to do things as cheap as possible.. Especially if you are not going for looks.
Will the home depot fernco's dry and crack out after awhile due to the fact that it's straight rubber that wasn't meant to be exposed to those kind of elements?

 

BS. The silicone couplers I used for my TID cost ~NZ$70 (~US45) retail. You can probably find the same thing much cheaper on eBay.

Thin-wall steel and aluminium piping is sized on the outside diameter. The couplers match.

This is all irrelevant anyway. The question was what size is the turbo inlet, and the answer is [i]not[i] 2".

 

wow, you're just being retarded now...

 

I seriously think some times you are messed in the head, I have been backing you up from the beginning, also, I don't live in the US so your prices are similar to mine, and i paid 20bucks CDN for my tid, thats still half the regular price.

Also, http://en.wikipedia.org/wiki/Nominal_Pipe_Size Scroll down to SCHD 5 pipe that is 2" diameter, you will see that the wall thickness is around .068" normal exhaust, and IC piping wall thickness also you might notice that the OD of the pipe is right around 2 3/8" which I said you were right about.

Like **** man I work with pipe schedule all day long at work, in the Nuclear Industry.