4 Rotor Build Out, 7.4L N/A V8 In | Worlds Best LSX Powered S15 Silvia? [TECH TALK]

Quad Rotor vs V8, Procharger vs Natural Aspiration and more.

It's hard to nail form and function, but Carl Thompson has it down to a fine art when it comes to drift builds between his old 1300HP 26B 4-rotor Aristo/GS300 build and this 'small block' Marsh Motorsport 454ci (7.4L) LSX based V8 Nissan S15 Silva one that is another work of art. Even if you are a solid rotary fan it's hard not to appreciate the same level of detail and perfection that has gone into this LS based S15 build.

We'll discuss why Carl moved away from his 4 rotors (one of which now powers Rob Dahms AWD RX7 build) and towards the MoTeC M130 controlled LS V8 platform as he has gotten more serious about competing and doing full-season campaigns along with why he chose a naturally aspirated setup despite having a procharger bolted on at some point in time.

The difference in power levels required for D1NZ and US series also pops up as well as the performance increases gained from his Dailey Engineering dry sump system and what the main driver displays and warnings he pays attention to during a competition run and interestingly why he went with a cast-iron LSX based block over the aluminium LS(x) blocks that are also able to handle sizeable power figures.

00:00 Intro
00:25 Rotary Vs LSX
01:31 Engine Specs
02:10 Iron Vs Alloy Decision
03:35 Procharger Vs N/A
05:06 Procharger Powerband
06:08 Dry Sump Setup
07:02 30HP+ From Good Vacuum
08:49 @MoTeC & EMtron Individual Cylinder Tuning
10:55 Dash Display Settings
12:21 Drivetrain
14:00 Diff, Suspension

To get power to the ground the car runs a Holinger Engineering RD6 sequential, Tilton bell housing, flywheel and triple-plate carbon clutch leading to the Winters 25cm IRS quick-change and 35-spline stub axles. A MoTeC M130, PDM30 and C125 logger/dash display and EMtron ETC4’s (for individual cylinder monitoring) round up the electronics side of things and giving Carl the ability to clutchless shift off the line.

Want to learn how to tune EFI? Start here instantly, and for free. 


No one has commented on this page yet.