Moto IQ: What the Hell Happened to Project Silvia?

Project Silvia was a Krylon superstar. Back in the heady days of Sport Compact Car and paper magazines, it was our most popular project, and when we launched MotoIQ, dusting off the Silvia was one of our first stories. The rebirth of this project series was looking so promising, and then...

The problems all started in turn 3 at Streets of Willow, where the Disco Potato-boosted S13 junkyard engine didn't spool quite early enough to lug out of the corner in 3rd gear, but was too responsive to control if you dropped into 2nd. The same thing happened again in turns 4 and 5, and again on the skidpad. It made for a frustrating lap, and a lot of scolding from the drift-hating corner workers.

So I decided to fix the problem the only way I knew how. With junk I had laying around. I had a non-turbo S14 cylinder head just sitting there that hadn't cost me a dime. S14 heads share the low intake port position with the later U.S. SR20DE that most of us consider inferior, but the ports are actually larger than the front-drive heads, and total intake flow is actually about the same as the high port heads. Most importantly, for my purpose, the S14 head has variable intake cam timing. Advancing the intake cam boosts low-rpm torque. This better breathing creates more exhaust energy, which spools the turbo sooner too. Adding additional low-rpm cam advance on EVO IXs really wakes up their boost response, and I was hoping to achieve the same thing with the S14 head.

salvia1 salvia2


Read the rest of the article at Moto IQ

 

Takeda USA Announces the Release of a Retain Air Intake System for the 2013 Honda Accord L4-2.4L

Takeda USA releases an Air Intake System for the 2013 Honda Accord L4-2.4L, P/N TR-1019P. This intake system produces up to 9hp and 9lbs. x ft. of torque over stock, while outflowing the factory intake…
Read More

Big Brake Kit for Honda Civic and Acura Integra with 15” Wheels

Wilwood announces a Brake Kit for 15” wheels on the Honda Civic and Acura Integra. This kit brings unmatched braking performance to street and drag race cars using 15” wheels and drag slicks in the…
Read More

Forced Induction Buyer's Guide - 2011

HorsepowerFreaks Turbo Systems Tune your own setup with the revolutionary HPF turbo systems for the BMW E46 M3. These are the same components used in their production “pre-tuned” turbo systems that include all the other…
Read More