matt_lamb_160 252 Posted September 6, 2013 What do you think of the wastegate positioning on this manifold? How do you think it could be do better on THIS manifold? Share this post Link to post Share on other sites
Wes 214 Posted September 6, 2013 Not good It's a split pulse manifold there should be pipe from each bank coming out and y piecing into the gate for the most effective gating Share this post Link to post Share on other sites
Gravelrash 36 Posted September 6, 2013 What do I think?? Crap. You will most likely suffer boost creep with the wastegate mounted there. Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 6, 2013 Thanks Wes, that's pretty much exactly what I thought, another outlet in the same spot but on the opposite side and join them together before the gate. I can get a manifold like it pretty cheap, trying to decide if it is worth it. Share this post Link to post Share on other sites
FAT-451 341 Posted September 7, 2013 You can always block off that wastegate and just run a pipe/wastegate off the turbine housing. Will control boost better then off the manifold. 1 matt_lamb_160 reacted to this Share this post Link to post Share on other sites
Wes 214 Posted September 7, 2013 You can always block off that wastegate and just run a pipe/wastegate off the turbine housing. Will control boost better then off the manifold. Yes, theoretically being as close to the turbine as possible is the best option as Branko mentioned. Only problem is the differing materials and welding on a cast item, you have to be a real good welder to make sure you get a great seal but cracks are inevitable due to heat and expansion rates of different metals. Still, it's the best place to put it. But if you're going to use that manifold which I don't recommend, you shouldn't just put it on the other side too. Share this post Link to post Share on other sites
Gravelrash 36 Posted September 7, 2013 Do you have much turbo to bonnet clearance? This will,work better http://www.ebay.com.au/itm/TOG-T3-CAST-IRON-38MM-WASTEGATE-FLANGE-MANIFOLD-TURBO-TURBOCHARGER-ADAPTOR-/190807324615?pt=AU_Car_Parts_Accessories&hash=item2c6d00b7c7&_uhb=1 2 matt_lamb_160 and slydog reacted to this Share this post Link to post Share on other sites
slydog 7,873 Posted September 7, 2013 Good idea bud... Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 8, 2013 Do you have much turbo to bonnet clearance? This will,work better http://www.ebay.com.au/itm/TOG-T3-CAST-IRON-38MM-WASTEGATE-FLANGE-MANIFOLD-TURBO-TURBOCHARGER-ADAPTOR-/190807324615?pt=AU_Car_Parts_Accessories&hash=item2c6d00b7c7&_uhb=1 That is a good idea but it is low mount and I think I would run out of clearance on the shock tower. Share this post Link to post Share on other sites
Wes 214 Posted September 8, 2013 Being a split pulse manifold, not the best idea at all with that adapter. Again the gate is to one side. If you don't put two holes from each pulse side then it should be bang in the middle of both sides, ie half on each side for the most benefit. Share this post Link to post Share on other sites
slydog 7,873 Posted September 8, 2013 All the exhaust goes thru the adapter as it a open chamber...not going to be too ineffective really.Not ideal but again a good idea compared to modifing that manifold.Ideally a better manifold to start with would solve all issues but its up to Matt really. Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 8, 2013 The manifold is not divided all the way to the flange, the second photo is bit deceiving. It is just a short 'merge collector'. 1 slydog reacted to this Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 8, 2013 You can always block off that wastegate and just run a pipe/wastegate off the turbine housing. Will control boost better then off the manifold. Sorry, missed this the first time, you mean kind of like on this housing: http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-HSG-043&Category_Code=HSG Share this post Link to post Share on other sites
FAT-451 341 Posted September 8, 2013 milzy here...cbf changing accounts thats pretty much it, although most people just weld onto their existing housing instead of buying a new housing. As for welding a cast housing, I have done a couple and haven't had any issues. Basically just preheat the housing and weld it while its hot. They say you should let it cool in sand bla bla, but ive just let it cool naturally and haven't had any issues. 1 matt_lamb_160 reacted to this Share this post Link to post Share on other sites
slydog 7,873 Posted September 8, 2013 I think Charles use to do his like that yes? Can't see a issue if your competent really? Share this post Link to post Share on other sites
Wes 214 Posted September 8, 2013 Sorry, missed this the first time, you mean kind of like on this housing: http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-HSG-043&Category_Code=HSG That's a good cast unit but most do it like this 2 FAT-451 and XFute-1JZsoarer reacted to this Share this post Link to post Share on other sites
Wes 214 Posted September 8, 2013 All the exhaust goes thru the adapter as it a open chamber...not going to be too ineffective really.Not ideal but again a good idea compared to modifing that manifold.Ideally a better manifold to start with would solve all issues but its up to Matt really. Oh yeah, I forgot. Why do it properly when you can do it every other way first Share this post Link to post Share on other sites
slydog 7,873 Posted September 8, 2013 Seems you were very good at the other way with the XR Glen gas turbo 250 numerous times and making that Fairlane combo slower in the XE not faster so yes you do have a valid point Wes... Back to topic please cos it seems Millsy has helped him out anyway. Share this post Link to post Share on other sites
Wes 214 Posted September 8, 2013 Faster and ran longer than any engine you've built. You're out of your territory. Should be a how to blow up a crossflow thread elsewhere. That desperately needs your expertise in there. No one here more qualified. Share this post Link to post Share on other sites
slydog 7,873 Posted September 8, 2013 Bahahahahaha Beg to differ but don't give a shit what you think anyway...LOL Learn how to actually build something not make it slower and pay people to do it for you is not usually how it works. Besides my point was the adapter would infact work so it was a good "idea" for a on a budget build if it suited his needs,which is what the forums are about actually helping people.But again it seems Millan has helped out with a option Matt likes so back to topic please. Share this post Link to post Share on other sites
Ants 6,370 Posted September 8, 2013 Another turbo thread,another fight. 1 warning only,next off topic,dick measuring,chest beating post will result in a holiday. Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 8, 2013 Thanks everbody for your input, I think there have been some good ideas put forward. I think the wastegate off the turbine housing is something good for me to consider no matter what manifold I use (assuming it doesn't already have a well positioned wastegate outlet), especially any manifold designed for internal gate turbos. If there are anymore ideas on wastegate positioning, don't really even need to relate to this manifold, I would like to hear them. Share this post Link to post Share on other sites
xg ute 9 Posted September 12, 2013 I would say wes has given the best advice in this thread. Why take a chance at ruining a turbo housing if you have a steel manifold that is easily cut and welded. People giving advice that Welding mild steel to cast is easy and wont crack are just telling you storys and haven't really done it themselves. So why take a chance. My advice would be to put a hole where wes showed. The smoother the path into a y will work very well. 1 Wes reacted to this Share this post Link to post Share on other sites
matt_lamb_160 252 Posted September 13, 2013 Yes Wes has given good advice, but I think you should have a look at some of the work done by the guy suggesting the turbine housing option before yoy call him a liar. I am confident he has done it before. I think his advice is also good. The cracking issues were pointed out by Wes. Thanks for your input. Share this post Link to post Share on other sites
rswepn 66 Posted September 14, 2013 Lol @ telling stories. <br /><br />Like I said, wastegate off the turbine housing is the best form of boost control and it's not that hard to do, for someone half competent anyways. 1 slydog reacted to this Share this post Link to post Share on other sites