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welding external wastegate flange to hf manifold.
How many people have done this? I know its difficult to weld onto the cast manifold, but i think I know of somebody that can do it. I'm getting sick of my internal wastegate acting up and either spiking or spooling up slow because of the way my turbo is clocked >:(. Can anybody post pics if you have done this so I know where the best spot to place the flange is. I heard placing it over the stock o2 sensor hole would be good. Do you think I would need to enlarge the hole?
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Re:welding external wastegate flange to hf manifold.
yea it be better to bore out the O2 hole. i was planning on doing the same but got something else
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Re:welding external wastegate flange to hf manifold.
sweet man. Do any of you guys have pics of this done?
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Re:welding external wastegate flange to hf manifold.
When ever I weld cast to mild steel I try and keep almost all the heat on the cast and push the weld onto the mild steel. Just dont try to cool the cast too quickly with water, just let it air cool.
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Re:welding external wastegate flange to hf manifold.
aight cool. I found a guy who is suppost to be an excelent welder so hopefully he will be able to do it.
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Re:welding external wastegate flange to hf manifold.
I did what you are talking about to my y8 with an hf mani. I bored out he stock O2 sensor hole to 35mm, same size as wastegate and welded it on there useing some special rods made to weld steel and cast. It works fine, good luck.
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Re:welding external wastegate flange to hf manifold.
I'm not sure if I'm on track here, but I had an idea for ya...if you do use the O2 sensor hole and bore it out, why not drill some holes right into the mani where the BOV could mount and tap them, and put in studs to mount onto. Just slip the BOV onto the studs and bolt it down. The only part that would suck is getting a flat surface for the gasket and BOV to mount against. (it does look pretty flat to begine with) Do I make any sense? I was trying to think of a way to do it without having to weld on the mani...
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Re:welding external wastegate flange to hf manifold.
Originally Posted by Shanksta
I did what you are talking about to my y8 with an hf mani. I bored out he stock O2 sensor hole to 35mm, same size as wastegate and welded it on there useing some special rods made to weld steel and cast. It works fine, good luck.
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Re:welding external wastegate flange to hf manifold.
Originally Posted by Zeusfire69
I'm not sure if I'm on track here, but I had an idea for ya...if you do use the O2 sensor hole and bore it out, why not drill some holes right into the mani where the BOV could mount and tap them, and put in studs to mount onto. Just slip the BOV onto the studs and bolt it down. The only part that would suck is getting a flat surface for the gasket and BOV to mount against. (it does look pretty flat to begine with) Do I make any sense? I was trying to think of a way to do it without having to weld on the mani...
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Re:welding external wastegate flange to hf manifold.
bump for pics :)
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Re:welding external wastegate flange to hf manifold.
OOPS! yeah....waistegate :P
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Re:welding external wastegate flange to hf manifold.
haha its cool man. yea i get what your saying, but i think welding on a flange is probably the best idea because i don't wanna have a leak or anything. There is a guy around here that can supposedly weld pretty much whatever you want and he has done some really nice work for my friends so i'm gonna take it to him.
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Re:welding external wastegate flange to hf manifold.
IDEA, pipe that threads in and weld wastegate to pipe?
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Re:welding external wastegate flange to hf manifold.
What i did with my external wastegate was drill the o2 sensor hole bigger and tap it, then put a piece of pipe in there and then weld the exteranal wastegate flange on to the pipe, works fine, no leaks
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Re:welding external wastegate flange to hf manifold.
Originally Posted by si_hatch
What i did with my external wastegate was drill the o2 sensor hole bigger and tap it, then put a piece of pipe in there and then weld the exteranal wastegate flange on to the pipe, works fine, no leaks
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Re:welding external wastegate flange to hf manifold.
Welding cast Iron isnt too bad. I have welded the flange for my turbo onto a CX manifold and so far its held up great. Im sure it coudl support a WG if it can support a turbo. Just do what has been mentioned, turn up the volts, heat up the cast iron super hot, then pool onto the steel. The WORST thing to do is cool it with water, hehe
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Re:welding external wastegate flange to hf manifold.
Heres how my Audi-gate/HF mani looked when done. I used some header tube to remote mount it due to limited space.
The guy that welded it used the correct rod, and it turned out great. I rape this thing alot, and its been holding for a few months so far. http://a4.cpimg.com/image/F8/C5/3312...-02000180-.jpg |
Re:welding external wastegate flange to hf manifold.
looks good leed, is the wastegate an open dump?
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Re:welding external wastegate flange to hf manifold.
Yeah, it dumps open right now. Ive got it pointed at the DP, and the plan is to join it back up. Im pretty lazy though.
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Re:welding external wastegate flange to hf manifold.
good job leed
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