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Old 07-10-2017, 01:44 AM   #1
maxitoman007
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Default Help with Wastegate Adapter Plate and 90+ Manifold

Ok so here's the deal, I decided to upgrade my turbo however the one I ended up getting requires an external wastegte. So as a solution I bought something like this :http://www.ebay.com/itm/T3-to-T3-Tur...-/351196446788.
Now I have a problem, I wanted to upgrade to a 90+ manifold for better flow but as you know going from pre 90 to 90+ manifolds the turbo mounting style changed from through-bolt to studs. This posed a problem for me because the wastegate plate I bought wont fit completely on the manifold, the studs on the wastegate side of the adapter hit the small tube going to where the wastegate would be. This means I cant get the plate to sit on the manifold correctly and it also means that there's no way I would be able to get a nut on the stud coming through (unless they make very thin nuts that could squeeze in, or there was some way to machine the plate thinner where the bolt goes through to add more clearance). Here's the thing, the holes on the adapter plate are threaded so using a through-bolt style manifold would work much better (bolts would just thread into plate instead of turbo). Now I'm trying to find way to get my 90+ manifold to work with the adapter plate. I first though about removing the studs and putting bolts through the same holes essentially making it a through-bolt style, but then I realized that there would be no way to get the new bolts in (runners cover the holes from the back). so then i thought about taking the studs out removing the threads from the holes, insert a threaded rod from the front, somehow put a nut on the back of it as it comes through the back of the manifold and then weld it (essentially putting a bolt in backwards by welding a head on to it), but then I realized that the holes don't have much side clearance at the back of the 90+ so I don't think there'd be enough room to put a nut on the threaded rod. So I'm stuck, I could just use the original pre 90 manifold and avoid all of this but if there is a good solution I haven't thought of then maybe it could work. Thanks in advance.
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Old 07-10-2017, 01:52 AM   #2
apachechef
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sell turbo
buy good turbo
stop trying to **** a round hole with a square dick
https://en.wikipedia.org/wiki/Sunk_c...k_cost_fallacy
doing things properly beats a cobbled together nightmare of adapters and kludges EVERY TIME
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Well keep us updated on how your dumbass plan goes.
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Old 07-10-2017, 02:03 AM   #3
maxitoman007
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I can't afford any other turbo, plus its a good turbo, T3/T4 63 ar exhaust 60 ar intake only 1000km on it. I just need help, quitting is not an option.
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Old 07-10-2017, 03:03 AM   #4
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That actually doesn't say anything about your turbo, so who knows.

That said, hog a hole in the bottom of the manifold and weld a small tube and flange there if you need to WG a 90+ housing.

Not quite sure how you plan to fit a real sized turbo in there when it's spaced out 3" from the manifold.
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Old 07-10-2017, 03:09 AM   #5
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I've heard that it's extremely difficult to weld on cast iron so would that make adding the flange hard? Also I measured it out and it should fit.
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Old 07-10-2017, 03:22 AM   #6
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You don't have a T3/T4 if it fits. Cast iron is as difficult to weld as the person welding it. In other words, if they don't know what they're doing then yes, it would probably be difficult for them.
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Old 07-10-2017, 03:58 AM   #7
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Keep them there 60 dollars and get a t3 internally wastegated exhaust housing. That'll get you where you want with what you want for around the price you want. Junkyards are your friend!

But without knowing what turbo, saying t3/t4 isn't much. Kinda like defining your car with only "a 4-banger with 4-doors".
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Old 07-10-2017, 08:53 AM   #8
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There's absolutely NO room to mount that adapter AND a turbo, if you're using a stock turbo manifold. Been down that road. The best you can do is to add the wastegate to the cast manifold (possible, with the right tools), or have a wastegate flange welded to the hotside scroll itself.
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Old 07-10-2017, 09:03 AM   #9
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Try to find a compatible turbine housing with a WG?



That way you get the mental peace of mind that this rando turbo you bought wasn't a waste of time'money because it won't fit.

Or just buy something that is more suited to what you need, instead of spending $20 to save $10.
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Old 07-10-2017, 09:04 AM   #10
apachechef
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Sell turbo.

Then you can buy proper turbo instead of wasting money on patches and workarounds.

If your budget is super tight, don't waste money making the wrong things fit poorly
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Old 07-10-2017, 10:00 AM   #11
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do it the sloppy way, and cut a hole in the turbine housing and weld the wastegate flange on there.
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Old 07-10-2017, 12:37 PM   #12
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Well lots of mixed responses here haha I think I'm going to use a header which puts the flange vertical so I don't have to worry about hitting the shock tower. They are also through-bolt style and already machined flat so that's a plus. I know I'll have to flip the flange and brace it ( what do you mean by brace ? Take the weight off the manifold? Make the manifold itself stronger?) but I think it'll work.
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Old 07-10-2017, 01:05 PM   #13
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Old 07-10-2017, 01:24 PM   #14
maxitoman007
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could look in to mounting it on the exhaust housing. I cant weld though so I'd have to find someone to do it for me.
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