FEnatic Posted May 10, 2005 Share Posted May 10, 2005 tried to search but cannot find a definite answer. Are the turbo intakes larger in the runners or not? From what I can see from some of the pics, the plenums look bigger, is this true? Thanks Quote Link to comment Share on other sites More sharing options...
EZ-E Posted May 10, 2005 Share Posted May 10, 2005 Someone will surely correct me if Im wrong but I believe that the intake runners on the turbo manifold are 30mm. Quote Link to comment Share on other sites More sharing options...
pjo046 Posted May 10, 2005 Share Posted May 10, 2005 Yes, that is correct. They are 30mm! Quote Link to comment Share on other sites More sharing options...
randy 77zt Posted May 11, 2005 Share Posted May 11, 2005 i just spent a few hours modifying a p47 intake for my turbo engine.i cut the egr pad off and welded a square piece of aluminum in its place.non-egr manifold are scarce in cali.then ground out the mouth for bigger throttle body.then i ground out those nubs in the intake runners that the injectors hold down screws run into.then i ground the injector bosses off and bored out injector holes for o-ring injectors.then jb weld some holes back up.i got about 6 hours in this thing and it looks kind of stock.runners are 31.75mm to 32 mm at the head now.fyi-that overboost valve on stock zxt manifold should be replaced by a 1" pipe plug.stock zxt manifold has too much uneeded stuff on it. Quote Link to comment Share on other sites More sharing options...
FEnatic Posted May 12, 2005 Author Share Posted May 12, 2005 what size are the N/A manifolds? Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted May 12, 2005 Share Posted May 12, 2005 They are the same size. Quote Link to comment Share on other sites More sharing options...
Tony D Posted May 13, 2005 Share Posted May 13, 2005 he he he, YEP, they are the same size! The "22% larger intake runner size on the turbo manifolds" is an internet urban legand/myth! Quote Link to comment Share on other sites More sharing options...
DemonZ Posted May 28, 2005 Share Posted May 28, 2005 "...a stock intake from a turbo engine (the turbo manifold actually has 17% larger runners!). I measured all the different manifolds, and found that the stock non-turbo FI manifolds are about 2mm smaller than the intake ports in the head." http://zhome.com/rnt/StealthZ/swebbA1A.htm Quote Link to comment Share on other sites More sharing options...
Drax240z Posted May 28, 2005 Share Posted May 28, 2005 The 3 I measured were all the same size. 82 turbo, 75NA, and 81 turbo. Quote Link to comment Share on other sites More sharing options...
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