Fallen86

I thought i'd find it in search but seems like something's wrong? nothing came up.

Anyways, when making your dump tubes what diameter piping do you guys use? and what thickness?
I'm wondering if dump tubes are better off hot (thick walled tubing) or cool (thin wall). I know that who-gives-a------lets-jb-weld-it attitude is cool, but you guys know this ----! so for the sake of the question any helpful insight would be appreciated.

Thanks in advance.

zex_cool

w/e is laying around. just look at the flange and make it that diameter.

Fallen86

thin wall or thick wall, which would u suggest

zex_cool

thick, easier to weld

kamilk69

just use anything for dump tubing, i used the front forks of an older bmx, works like a charm

zex_cool

but your polish :P

kamilk69

how did you know im polish

zex_cool

hahaha im an OG *****, but not to worry im serbian

traff1c

1.5in worked for me. going to be picking up some pipes this week... let me know if you need a u-bend

LSD Motorsports

The function of the dumptube is primarily to displace the gases coming out of the wastegate to another place. It really isnt even a necessary part. You definately would want the air warmer for speed so it expels faster. However it doesnt really make much of a difference for a small 4 cyl turbo set up. Use whatever you have around, either 1.5 or 1 5/8" fits best.