Area 51 Racing

iTrader: (5)

I thought we had a thread on this already but I can't seem to find it. And with the exception of Matt's Sloppy Colorado, a thread at Yellow Bullet, and some import crap, I can't find hardly any info on the subject. I'm just looking for realistic pros and cons.

I have to redo my crossover for my nbs silverado (gate in co) because the jackazz I bought it from thought it be cute to hack off the gate flange before sending it to me. So long story short, I have to redo the crossover and weld on a gate flange regardless. I just thought it would be a good time to consider it. The only down I can see is cutting a hole in my new T4 s475 and that may hurt resale down the road yet I don't plan on selling it no time soon. On the plus it seems to have the potential to control exhaust much better than in the co. Give me some input guys.

RyanR

stevieturbo

Downside is the fact you're having to weld to the housing which has the potential to fail.

Other than that, if it fits and works for you, just do it.

Just do it close to the flange as opposed to deeper in the scroll as discharging air too close to the turbine might make it less efficient at actually driving the turbine ?

Area 51 Racing

iTrader: (5)

Thanks for the reply. And yeah, I guess you're right and I should just man up and get on with it.... just kinda spooked because it's uncommon. I know of 2 different guys that are extremely good at tig welding (unlike me) that should be up to the challenge. As far as a failing point though, is it really any different than any other position possibly failing? Seems like a possible risk no matter where it's mounted to some degree.

autoaddictions

Value of the turbo!! If you decide to upgrade you can forget about getting much for the used turbo with a wastgate mounted to it.

stevieturbo

It's only a turbine housing, they arent usually that expensive to replace.

Just do it.

Area 51 Racing

iTrader: (5)

Value of the turbo.... I understand that but I can buy a new housing for $175 if something ever happens and I honestly didn't buy it to resale it. The functionality of it outweighs the dollar value imo.

I ordered a new gate flange last night so hopefully I can make some progress next week.

aggie91

just a thought as I am no expert on turbos...wouldn't adding the WG to the housing as being discussed here be the same as a turbo with a built in WG?

So far, from what I read, it seems to be a very effective place to add the WG. Looking at cut aways and drawings, the internal WG is ported just past the flange before the scroll of the housing starts.

stevieturbo

Pretty much yes.

coltboostin

Its the MOST effective place to put a waste gate.

Only downside is turbo upgrading down the read (must modify turbine) and hurting resale.

roastin240

iTrader: (13)

Im about to do this. My precision 46mm gate has a 1.88 inch inlet to be used with 1.5 inch pipe dimensions, rather than 1.75 tube, so I think that will be nice to use a thicker material like the turbine housing to weld it together. Just cant decide if I want to weld stainless pipe to it or mild steel pipe to it. I researched it heavily on welding forums and it is advised to use a high nickel content filler rod like 309 rod (if I recall). Pre-heat, weld, and cool slowly. Only thing I dont like is not being able to use my turbo blanket, so I will probably have it ceramic coated after I am done.

Area 51 Racing

iTrader: (5)

I'm using the 46mm Precision as well. And yes, you are correct on the filler. I've been doing alot of reading on welding and repairing exhaust manifolds and joining with SS. Almost every thread and vid I see on the subject mentions using a 309 or a high nickel filler. And also like you mentioned, heat to 500-600, weld, and slowly bring the heat down over a few hours time. I'm by no means a welder or anything of the sort but that's just what I've seen but will leave it up to my fabricator as he's the pro and I'm the chump on this subject.

TrendSetter

i have one and it works great but its on my import crap so it follows different laws of physics than a ls

Area 51 Racing

iTrader: (5)

Lmao, well played! Given I've owned several Z's and currently rocking a 370 Nismo, I think I'm entitled to call them import crap being as I'm an owner.... and happy to be one. Put the butt hurt aside, keep it on topic and tell us about your setup dude

stevieturbo

Just cut a hole in the blanket.

Area 51 Racing

iTrader: (5)

That's what I'll be doing. I would like to figure out how to keep it from unraveling though. Maybe cut it, then sear it with a hot knife and a light coat of RTV to keep it from fraying on me.

stevieturbo

Make a small alloy flange and bolt it together around the hole. ie a flange either side of the blanket.

TrendSetter

my evo has a fp green htz with the wastegate 90° off the side of the inlet of the turbine. it appearsto be a very inefficient spot and FP warns it wont go below 20psi but ive run 14psi. its a pretty efficient wastegate location by my experience, but you generally have to ramp out wgdc as rpm climbs at lower boost levels. as you raise boost the wgdc will go level then invert to a positive slope.

Area 51 Racing

iTrader: (5)

Man, you had up until the "My evo has a" - And then you kinda lost me there

TrendSetter

http://www.forcedperformance.net/mer...e=Lancer-Turbo

roastin240

iTrader: (13)

LMAO! ha ha thanks