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Finally got around to finishing up the port matching on one of my turbine housings today. I first brought
up the subject here:
[ http://www.twinturbo.net/nissan/300zx/forums/general/view/2185289/Holy-unmatched-port-batman.html ]
So I took a few pics just to show the difference in port sizes between the ported and unported turbine
housings.Here is the the marking I made to show where the edge of the gasket after I port matched the gasket to
the manifold:
...and here are some pics of the ported and unported turbine housings:
 I'm no proffesional at this and it can be difficult to do this with a dremel and trying to figure out what bits
work best. I found that
diamond bits work best for the brunt of the work a high RPM and the small sand paper drums and
aluminum oxide bits work best
at low RPM since they like to explode at 35,000RPM.
I'm sure the porting should improve spool up somewhat, and maybe even minimal high end power gains,
but I don't think that
has ever been documented or proven. All I can do is just hope. :)
 **SELLING: Stock >> driveshaft, 6 TT injectors with used rail, new style
brand new rail, oem intercoolers, IC ducts, TT radiator, clutch fan, used
turbos, turbo manifolds, charcoal tonneau cover, a few more odds and
ends- just ask. |
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Port matched turbine housing. 1 down, 1 to go... - 
