| Here is the link of his post about his manifolds that he made for his Ultimate street Z and his response to Dee about his turbine housing for his build being the restrictive point. [ http://www.twinturbo.net/nissan/300zx/forums/general/view/2421498/no-I-didnt-say-that-a-smaller-opening-would-be-better.html ] I could email Ash and ask him his thoughts.. but I figured it could be beneficial to the forum as well. In the initial thread, It mentions that his manifolds flow a little less than the MS manifolds and that the turbine housing is the primary restriction. I believe his custom turbo setup uses 4bolt turbine housings, however he did open up the size of the internal wastegate port and make a custom flapper door allow the boost to be controlled more effectively. Ash, If you changed the housings to say.. a true 5bolt setup. Do you think that your turbine housing will no longer be the primary means of restriction, thus pointing it back at the manifold setup? Also, I see in the other post replying to Dee, you mentioned that by possibly going to MS manifolds that it may not benefit YOUR setup due to your turbine housings (4bolt). However; Do you think that the advantage of the increase of thermal dynamic efficiency (mass) of the MS manifolds and them fabricated of ductile iron and the characteristics of maintaining heat/energy etc will still benefit over the use of SS tubular setup (for your turbine housings) Since the properties of the ductile iron will increase the scavenging effect of the exhaust gases. Being that your turbine housing is also constructed of ductile iron. If you used the MS manifolds and your modified 4 bolt turbine housings. Being that the properties of both exhaust manifold/turbine housing having the same charateristics. In your opinion, do you believe that this will also create a better flowing setup even through your turbine housing selection? On a Eagle Talon Tsi that I built a while back.. I remember switching from the cast iron manifold setup to a SS tubular design and the difference of spool up was in favor of the cast iron.. I do believe of course that the SS tubular would have more high end FLOW... but the characteristics of the cast iron exhaust manifold and its ability to increase the thermal efficiency/heat transfer down through turbo/exhaust (besides the durability) made the car FEEL more powerful. I had this bouncing around in my head the other day and figured I would post to get some thoughts.
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=================================================================NO, This picture is not photoshopped.
AIM:Shawn300zxTT "-Any closeups on the nuts? - zboost(tx) 19:17:53 08/08/05
-Not really something you want to ask another man about... (n/m) - LordZ 19:24:00 08/08/05" "I just took 45 min and scrubbed the heck out of my rear"
teambushido(San Diego, CA) 19:24:51 12/11/04 -1991 Stage _ TT 5spd (Upgraded to hell and back)
-1990 Super White 2+2 Na Stage 3 Auto (Deceased :( )
-1990 Cherry Red Pearl ,Auto Coupe (Parts car)
-1990 11 Sec Eagle Talon Tsi AWD, (SOLD!)
-2001 Ford F-150 Crew cab, 5.4 Triton v8.. Tow bitch
-1997 Acura 2.2 CL, 5spd. Daily Driver.. great little car!
-2004 Honda CBR 600RR (Candy blue, FOR SALE) |
