Tuesday, April 28, 2009

How A Basic VTEC System Works

Hi guys, i happen to stumble upon an old Japanese video of the B16A engine with a nice long section showing how a basic VTEC system works for those still new or have little idea of how it actually does. You'll be amazed at how simple it really is.

[After video is finished loading, fast forward to 1:22. The section starts there until 4:20]

[1:22~2:25] Typically, a VTEC system has 3 rocker arm & locking pin assembly and 3 camshaft profiles with the middle one being the performance high-lift profile. During low speed operation (below VTEC switchover point), all the rocker arms move independently according to their own profile thus maximizing low-end torque and improving fuel economy. 

[2:26~4:20] On high speed operation (VTEC switchover point), the VTEC control module operates a hydraulic control valve which increases the oil pressure inside the rocker arm assembly, pushing the locking pins and locks all the 3 rocker arm together now moving on a single high-lift camshaft profile. When returning back to normal low speed operation, oil pressure decreases and the springs in the locking pin assembly pushes back the pins into its original position and unlocks all 3 rocker arm returning it to its own individual cam profile movement.

SOHC VTEC = VTEC mechanism is only on the intake valves
DOHC VTEC = VTEC mechanism on BOTH intake and exhaust valves

Sunday, April 26, 2009

Picture of the week #7

Photo by August77
Mugen FD2R and Mugen DC5R

Honda teaser

Silver metallic Honda DC5 equipped with buddyclub bodykit
pic taken from modified cars website.

Clean and neat with 17 inch rim

Carbon tail light with rare rear bumper

Sunday, April 19, 2009

Blazing Type R' and Project R' Meet Up! (part 4)

Photo by JAI

Blazing Type R' and Project R' Meet Up! (part 3)

Photo by JAI

Blazing Type R' and Project R' Meet Up! (part 2)

Photo by JAI
(click image for high.res view)
More Photos Coming Soon!

Blazing Type R' and Project R' Meet Up! (part 1)

Photo by Min16
(click image for high res. view)
"Group photo Blazing R and Project R"
More Photos coming soon! 

Thursday, April 16, 2009

Old school honda CRX nice and neat

One of the powerful Honda CRX 1988, very nice and clean with powerful horsepower. This pictures are taken from turbo magazine website.

Sunday, April 12, 2009

Group Trip!! Super GT Malaysian Round @ Sepang Circuit

Hi all,

JDMjunkies.bn is organizing a group trip to the 2009 Autobacs Super GT International Round (JGTC) at Sepang International Circuit, Malaysia this coming June. Check out the blog at http://jdmjunkies.blogspot.com for more details ;)

Blazing R gathering at Seria Karnival

Photo by: BoykbDC5

bah apa lagi orange DC5!!!! bali tia
Nada sound2 anak atu hehhe :P 
guess whos?

History of RD Tanabe in Japan

Tanabe is well known for its racing parts.
Here is a little history of Tanabe company.

Made in Japan, made in Tanabe. With over 20 years of experience in the development of quality automotive parts for performance application, we take pride in all our products engineered to the strictest of tolerances, produced with the highest quality materials, and made within our very own advanced ISO9001(International Organization for Standardization) & JISQ9001(Japanese Industrial Standard) certified manufacturing facility located in Shiga-city, Osaka-prefecture, Japan. Race Tested and engineered to perfection, get an edge over the competition. Fuel the racing spirit!

Friday, April 10, 2009

Hondata Heatshield Gasket

Heatshield Gasket installed on BTR members ride...
August77, MIN16 and Blue-Comet.

For more pics, check out JDMjunkies.blogspot.com :D