63=64 and Head question - ZR-1 Net Registry Forums

LGAFF · 03-01-2008

I was dissapointed when I tried match my plenum to the TB, I have a 63MM DRM TB, and noticed that they did not port match the intake, it was 60MM. So I opened up the intake to 63MM. Dominic came over today so before he got here I matched up TB to the intake and there was still a difference. After remeasuring the intake, I measured the TB again....difference is the TB is actually 64MM.

Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so.

LGAFF
92 ZR1
#234

03-01-2008	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	63=64 and Head question I was dissapointed when I tried match my plenum to the TB, I have a 63MM DRM TB, and noticed that they did not port match the intake, it was 60MM. So I opened up the intake to 63MM. Dominic came over today so before he got here I matched up TB to the intake and there was still a difference. After remeasuring the intake, I measured the TB again....difference is the TB is actually 64MM. Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so. LGAFF 92 ZR1 #234

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