How much does an RB26DETT weigh? Its a question that gets asked a lot in automotive circles. The lighter something is, the easier it is to accelerate, brake, and turn.
The lighter a car is, the easier it is on equipment like brake pads, and tires.
I weighed some RB26 parts myself several years ago. Some of the other information is gathered from the internet. Never believe anything you read on the internet.
RB26
Heads cams /valve covers- 72 lbs
Block bare – 145 lbs
Pistons /rings in box – 8lbs
Front diff/pan – 55 lbs
Rods in box – 11 lbs
HKS 2.8 crank (should be similar to stock) – 60 lbs
Tubular HKS manifolds – 11 lbs
Turbo – 16 lbs each
Cast turbo outlets – 6 lbs.
Total of around 406 lbs . This is still missing lots of bits and pieces . All the intake manifold stuff , the throttle bodies , sensors , oil cooler .Lines , Inlet piping , coil pack , belts , flywheel/clutch.

RB25
Block: water pump, ac/ps brackets; 150lbs
Crank: with crank girdle; 65 lbs
head: intake/exhaust manifold, no valve covers and coils; 110lbs
Pistons: with rod bolts and rods; 15lbs
oil pan: 7 lbs
valve covers: both with coil pack cover; 10lbs
Rear oil seal cover,oil pump, crank pulley; 10lbs
Flywheel: with ACT rb25 PP and disk; 35lbs
stock turbo; 15lbs
417 lbs with all major parts.
VR38DETT Fully dressed – 608 lbs.
Here is some information I gathered of some forum somewhere. Some of the information is just guessed, like RB26 weights at 550-700+lbs.
KA – 368lbs (unknown if that is short, long, or fully dressed) – posted by UKnissan
RB20 – 476.8lbs YoMani (or something like that, he’s on nico) weighed it himself
RB25DET – 720lbs – sport compact car magazine Sept 2003
RB26
unknown to me but estimates range from 550-700lbs from what I just
read, I GUARANTEE it is a sh!tload heavier than these weights:
VQ35 – 260lbs longblock, no intake manifold – weighed by JClaw, lifted by himself onto bathroom scale
VQ30
Shortblock – 127lbs weighed by JClaw on his bathroom scale – including
rotating assembly, no heads, no timing cover, and of course no intake
manifold.
VQ30 long block – 246lbs weighed by ME at aluminum
recycling facility. No intake manifold, obviously including rotating
assembly, block, heads, timing equipment.
VQ30 long block
(different one than above) 315lbs – lifted by my buddy and I onto
bathroom scale at my buddy’s house with no problems whatsoever.
VQ35 long block component pieces weighed on shipping scale by eng92 – 277lbs – block, heads, rotating assembly.
VQ35
long block including intake manifold, no accessories – 313lbs weighed
on a recently calibrated auditing scale with supposedly accurate to
within +/- 0.5lbs
CREDIT GOES TO eng92 FOR THESE PICTURES
VQ35
http://img.photobucket.com/alb…1.jpg
VQ30 long block, undressed – 338lbs
VQ30
http://img.photobucket.com/alb…4.jpg