I made this downpipe today for vw diesel, mk3 with 1.9IDI and T3 turbo. What do you think? I made the first radius off the turbo very wide, I find it helps drop EGT's more and help the turbo spool up quicker. Any body have any tips for welding 16g tube? I would like to get my tube welds as nice as my fillet welds. I am currently welding the butted tube joints at 40-45 amps, 1/16 red tungsten, #6 cup, gas lens, 18-20chf, .045 er70s-2 filler on a syncrowave 200.

 

Turn down the heat just a little more. Looks nice and burnt, looks good though. Amperage down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by synik &raquo;</TD></TR><TR><TD CLASS="quote">Turn down the heat just a little more. Looks nice and burnt, looks good though. Amperage down. </TD></TR></TABLE>

its mild steel .. doenst need to be rainbow. blue is actually the right color for it.

looks great btw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">

its mild steel .. doenst need to be rainbow. blue is actually the right color for it.

looks great btw </TD></TR></TABLE>

Whenever I weld mild pipings, it comes out less dark then that, with full penetration. See that 1-2inch dark area? Might be just the camera..Who knows.

None the less, still works.

 

All the 16g but welds were done at around 40 amps, do you really htink I should go lower than that? I have 100% penetration currently, I dunno I will get that if I go down to 30-35... I'll try though, some .035 filler might be nice.

 

40 amps is fine. I run about that and get full pentration.

 

i ran a bunch of beads on some 16g piping last night at 40 amps too. worked fine for me. 100% penetration all around. did you purge it? or just leave it?

 

I usually don't purge mild, but I will if it is a DP and there is a cat in the system. The backside will flake off and clog the cat.

After the cat or no cat, no purging.

 

I don't run cat's so I don't purge, its diesel, they don't like cats anyways.

 

No VW deserves a nice piece of work like that.... only Honda and acura deserve quaity like that!!! muhahah

 

engine mods? i always wanted to see some one build up a vw diesel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATgrills.com &raquo;</TD></TR><TR><TD CLASS="quote">No VW deserves a nice piece of work like that.... only Honda and acura deserve quaity like that!!! muhahah</TD></TR></TABLE>

hahah

 

I've built a bunch of vw diesels, its what I do, I am building a mechanical TDI right now for myself, 1.9 8v, shooting for over 250WHP and over 400ft/lbs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dave@passenger &raquo;</TD></TR><TR><TD CLASS="quote">I've built a bunch of vw diesels, its what I do, I am building a mechanical TDI right now for myself, 1.9 8v, shooting for over 250WHP and over 400ft/lbs.</TD></TR></TABLE> Do u ever race any of the cars u build at Mission? I didnt see many VW's their but mabey i wasnt looking

Sweet fab work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88_DX &raquo;</TD></TR><TR><TD CLASS="quote"> Do u ever race any of the cars u build at Mission? I didnt see many VW's their but mabey i wasnt looking

Sweet fab work </TD></TR></TABLE>

I ran my old 16v turbo gti there when I was still into gassers, I havent run my diesels there yet though, plan on it this next season I am diesel only now

 

my friend is running a mk4 tdi. he has injectors of some sort thats all i know. He is lookin finto getting a rocket chip.