P_BA_XR6 Member 271 Member For: 16y 10m 9d Gender: Male Location: Castle Hill Posted 25/06/13 12:15 PM Author Share Posted 25/06/13 12:15 PM Fair enough see if the how much of gain from the manifold which is good question! Then etc.Do think it would be stupid to run a 4in dump pipe with external wastegate join back into the dump pipe just before the cat Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 10m 9d Gender: Male Location: Castle Hill Posted 25/06/13 12:16 PM Author Share Posted 25/06/13 12:16 PM Sorry for the above I had blonde moment Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,331 Member For: 19y 6m 17d Gender: Male Location: Perth Posted 25/06/13 12:18 PM Share Posted 25/06/13 12:18 PM Plumbed back in gate is a good idea. It will work well if done well. Try and avoid the steep angles between the gate and dump pipe Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 10m 9d Gender: Male Location: Castle Hill Posted 26/06/13 04:35 AM Author Share Posted 26/06/13 04:35 AM Yea might cause to much turbulence inside the pipe with to much angle and cause it to not flow as well? I was thinking sort of the same thing! I'm getting Windsor exhaust to make it up for me! I was thinking along the lines of 4 in dump pipe and the waste gate be 2in which will return just before the cat on a nice flowing join like 7 -12* degrees if possible? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,331 Member For: 19y 6m 17d Gender: Male Location: Perth Posted 26/06/13 05:06 AM Share Posted 26/06/13 05:06 AM I would try and do it as far upstream (closer to the turbo) from the cat as possible. The cat is obviously the biggest restriction so I could see benefit in introducing the gas well before it. Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 10m 9d Gender: Male Location: Castle Hill Posted 26/06/13 09:43 AM Author Share Posted 26/06/13 09:43 AM That's strange I've heard the opposite, don't take offence just opinion I was given and was wondering if anyone has heard it and tried it before. It was said to me to put it minimum of 12in if further is possible it would be better, due to fact heat causes more flow and if its further down it would cause draw just before the cat! Also putting it lower would be less turbulence on turbo which would give the turbo chance free flow. Angle the plumb back in at maxium Of 45 degrees Best would be 7 to 12 degrees. 90degrees would cause alot Of turbelnace and slow the flow down! I'm not saying this is correct but it was opinion given to me and thought I would throw it out there. Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 10m 10d Gender: Male Location: Adelaide Posted 26/06/13 10:04 AM Share Posted 26/06/13 10:04 AM have a look at other custom manifolds and go by that as a good guide Link to comment Share on other sites More sharing options...
Chaos310 Donating Members 228 Member For: 12y 7m 9d Gender: Male Posted 26/06/13 11:06 AM Share Posted 26/06/13 11:06 AM Screamer pipe.... bring it back! Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 9m 2d Gender: Male Location: OZ Posted 27/06/13 06:37 AM Share Posted 27/06/13 06:37 AM The .05 out spooled the .07, but I was running a T04z wheel as well.when we both had 66mm wheels and yours with the 0.7 spooled ever so slightly quicker than my 0.5. The 'shape' of the boost curves were identical. There is a guy on here with this exact set-up. Had a BA stock motor making 370kw. Forget his user name...mic something. Snot coloured car 2 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,331 Member For: 19y 6m 17d Gender: Male Location: Perth Posted 27/06/13 06:42 AM Share Posted 27/06/13 06:42 AM roger, I was thinking .05 and 61mm wheel v .07 and 66mm. Not .05 66 v .07 66 Link to comment Share on other sites More sharing options...
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