Noddle Posted November 11, 2009 Share Posted November 11, 2009 Hi, I'm thinking of moving to a external waste-gate, but not wanting to weld a pipe into the manifold (Dont trust my welding for that), I was wondering has anyone used this type of adaptor to connect there waste gate into, also, does the outlet get in the way of any other things, like the inlet manifold, exhaust housing, etc. Nigel Quote Link to comment Share on other sites More sharing options...
big-phil Posted November 11, 2009 Share Posted November 11, 2009 Thats what I have, and here is a video of me putting it on: I ended up welding mine on, I could'nt get the bolts on the threads because the waste gate hole is in the way. Quote Link to comment Share on other sites More sharing options...
S130Z Posted November 11, 2009 Share Posted November 11, 2009 I also went this route. I took mine to a cast iron specialist to have it welded. I would strongly recomend not using this for a S130, I had major steering shaft clearance issuse. I wish I had started off with cutting a hole in the mannifold and having just a wastegate flange and maybe some piping welded on instead of that adapter. Ask Phill, but I think they may not flow enough and might cause some boost creep. I will find this out in about a month after my engine is broken in. If you do stick with it, round the inside edge nice and smooth to get good flow to the exhaust gate. Hope this helps! Quote Link to comment Share on other sites More sharing options...
big-phil Posted November 11, 2009 Share Posted November 11, 2009 yes i to wish i would of cut a hole in the manifold. I'm having major boost creep problems. I have another manifold and think I will cut the hole in it. Quote Link to comment Share on other sites More sharing options...
Noddle Posted November 11, 2009 Author Share Posted November 11, 2009 Big-Phil, $5 Manifold, you lucky bast..d mine cost me about $50, and another $70 to get it shipped to me here in Tassie, as for the manifold been cast, from another post I asked this question, it steel I believe. sound like I need to cut a hole into it..., or find a adaptor, with the hole (wastergate), at the bottom thanks for the input Nigel Quote Link to comment Share on other sites More sharing options...
Noddle Posted November 12, 2009 Author Share Posted November 12, 2009 Hi, I've been doing some research on welding a pipe into the bottom of the manifold, and I keep reading about 'Schedule 40', so I've done some hunting on the 'net' and found that its made from "wrought steel and wrought iron", http://en.wikipedia.org/wiki/Schedule_40 so my question is, what 'type' will I need, I assume it would be ""wrought steel", but I honestly don't know (out of my area of expertise) so any input would be appreciated Nigel Quote Link to comment Share on other sites More sharing options...
S130Z Posted November 12, 2009 Share Posted November 12, 2009 I would go with steel. I have a cast steel adapter and the fabricator said it welded in great. Quote Link to comment Share on other sites More sharing options...
Noddle Posted November 12, 2009 Author Share Posted November 12, 2009 I would go with iron. I have my cast iron adapter and the fabricator said it welded in great. It sound like you had it welded into your adapter, I was thinking of getting it welded into the manifold itself. Nigel Quote Link to comment Share on other sites More sharing options...
S130Z Posted November 12, 2009 Share Posted November 12, 2009 I had the adapter welded to the manifold. The adapter was actually cast steel if I remember correctly. Quote Link to comment Share on other sites More sharing options...
Noddle Posted November 17, 2009 Author Share Posted November 17, 2009 Hi, I've spent hours looking for these pipes all over the place (internet), I just found out they are called "Buttweld", so if you do a seach for this on ebay, you'll find heaps of them. only in the US by the look. I need to keep looking.. Nigel Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted November 18, 2009 Share Posted November 18, 2009 You don't have to even weld on the manifold to use an external wastgate. You can just machine an area on the manifold to bolt the wastegate to. Quote Link to comment Share on other sites More sharing options...
rossman Posted November 18, 2009 Share Posted November 18, 2009 ^^Pics? Quote Link to comment Share on other sites More sharing options...
Noddle Posted November 18, 2009 Author Share Posted November 18, 2009 You don't have to even weld on the manifold to use an external wastgate. You can just machine an area on the manifold to bolt the wastegate to. I never though of doing this, do you have any pictures ? Nigel Quote Link to comment Share on other sites More sharing options...
S130Z Posted November 18, 2009 Share Posted November 18, 2009 Well I am selling my manifold with my adapter welded to it if you want one for a good price. I'll let it go for $50 because it leaks from #1 and #2 and needs to be resurfaced. It also does not fit as well as I needed it in my ZX. They fit fine in the S30 though. PM me if you want it. I called my machine shop and they quoted me $55 to get it resurfaced. Quote Link to comment Share on other sites More sharing options...
jc052685 Posted November 18, 2009 Share Posted November 18, 2009 I just used 304 stainless mandrel for my wastegate. Welded straight to the manifold. Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted November 18, 2009 Share Posted November 18, 2009 Let me see if I can dig up some descent pictures. I posted the on here before. I pretty much just machined a flat spot on the manifold, hogged out a hole for the exhaust, drilled and tapped 2 holes for the bolts. Been running it like this for many years and never had a problem. Quote Link to comment Share on other sites More sharing options...
speeder Posted December 11, 2009 Share Posted December 11, 2009 I just installed this adaptor on a customer's L28. Welded it onto the manifold, and welded on a V-band for a Tial 38mm Wastegate. All V-bands on the stainless downpipe made a very compact installation. Turbo is a GT3076r, crazy fast spool. Even with less than optimal angles for the exhaust dump into the wastegate, that 38mm valve should outfow any internal gate I've seen. We got solid boost control from 12 -20psi with a Sard boost controller (after much guessing about how to make settings -Japanese Language Manual!), 12 pound spring in the wastegate. I would recommend this setup. Quote Link to comment Share on other sites More sharing options...
S130Z Posted December 11, 2009 Share Posted December 11, 2009 Very nice work man! I am getting pretty good venting also through my 38mm Turbonetics Evo gate on a 15lbs spring. I have yet to see over 15psi in a datalog. Unfortunatly I have to get rid of my manifold because of space restrictions in a ZX with the size turbo I'm using. Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted December 11, 2009 Share Posted December 11, 2009 Very nice work man! I am getting pretty good venting also through my 38mm Turbonetics Evo gate on a 15lbs spring. I have yet to see over 15psi in a datalog. Unfortunatly I have to get rid of my manifold because of space restrictions in a ZX with the size turbo I'm using. I may be interested in your manifold, but it wouldn't be till after xmas Quote Link to comment Share on other sites More sharing options...
zxtman Posted December 11, 2009 Share Posted December 11, 2009 These adapters may work fine in lower boost/HP motors, but they have their limits and may not work as well in higher boost/HP motors. What is not desirable about these wastegate adapters is the 90 degree turn the exhaust gas has to make; especially as the speed of the exhaust increases, it becomes more and more difficult for the exhaust gas to make the turn. If you can manage it, a 45 degree angle or less is better. Quote Link to comment Share on other sites More sharing options...
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