how big is the type-r exhaust? is it 2.25"-2.5"? is the usdm and jdm 4-1 header the exact same? and how big is the collector? thanks ~ type-r's rule!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by orig1nalkhmersta &raquo;</TD></TR><TR><TD CLASS="quote">how big is the type-r exhaust?</TD></TR></TABLE>

The B-pipe is 2-1/4" OD with numerous bottlenecks. The first bottleneck at the cat/B-pipe flange is 1-7/8" OD. The piping necks down again before the main resonator to 2-1/8", and also necks down after the second resonator just before the rear flange to 2". The axle-back piping is mainly 2-1/16" OD (enlarges very slightly to 2-1/8" depending upon where you measure).

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by orig1nalkhmersta &raquo;</TD></TR><TR><TD CLASS="quote">is the usdm and jdm 4-1 header the exact same?</TD></TR></TABLE>

If you're talking about USDM and JDM factory Type R "headers", the USDM unit is a cast 4-2-1 manifold that is very similar to other USDM B-series manifolds (and in fact the upper half is identical). The JDM Honda 4-1 is a tubular "header-style" manifold.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by orig1nalkhmersta &raquo;</TD></TR><TR><TD CLASS="quote">and how big is the collector? thanks ~ type-r's rule!</TD></TR></TABLE>

The USDM ITR manifold has a 2.00" OD collector, and the JDM 4-1 is ~2.5" OD.


Modified by Padawan at 5:27 PM 11/9/2004