Cams doubt

[oldeskewltoy]

WARNING.... OPINION

I'm not a big fan of the Tri-Flow cams... they were not designed with a great deal of forethought........

The Triflow design opens one intake valve slightly earlier then the other. The idea is sound... to promote something called "tumble", or "swirl" Each helps cylinder filling. The problem is they didn't design the cams in conjunction with the way TVIS activates.....

As I understand it, the way the Tri-Flow cams were designed/built is beginning @ the front (#1) they chose the same lobe from each pairing to activate earlier.


IDEALLY... the tri flow cams should open the "favored" valve first allowing the fuel sitting on the back of the favored valve (batch injection) to enter the chamber first.



Look at the photo above... see how the injector hole favors one valve over the other?? Also note how the TVIS butterflies are also on the same path as the injector placement

IMHO...... the Tri-Flows should be built to match the butterflies/injector placement... This would mean instead of grinding the same lobe on each pair to open first, that they grind them in conjunction with the TVIS/injector placement.

OPINION over thank you for your understanding....

To the OP... unless your engine is really healthy... you will need more than camshafts to actually gain power.

My prescription for you.........
Purchase camshafts(256 type only), purchase adjustable timing pulleys, purchase .8mm TRD gasket, machine head surface .020"(.5mm) This combination should not only look good on a dyno, but should feel good on the street.

My preferred "256" type camshaft is Web Camshaft's Grind 294, Or Kamikaze's Grind 294


Finally... some nomenclature help. You will hear camshafts described in duration(length of time cam keeps valve open), and lift (amount cam opens the valves). Some cams use the duration as its name, ("HKS256, or HKS264, some others too) these cams have TOTAL durations of 256 or 264 degrees. Some cam shaft makers use names(or numbers) they developed to differentiate(Web cams 294 grind)

What YOU as a consumer want to do is dig up as much information as you can so that YOU pick the best cam for your needs.

I have collected many of the more common 4AG timing cards... although I'm missing the timing card for the Triflow cams

stock - http://i79.photobucket.com/albums/j143/o...ckboth.jpg
old HKS 264/8.35 - http://i79.photobucket.com/albums/j143/o...264835.jpg
old HKS 256/8.35 - http://i79.photobucket.com/albums/j143/o...256835.jpg
Wade(Aussie) - http://i79.photobucket.com/albums/j143/o...Aussie.jpg
new HKS exhaust - http://i79.photobucket.com/albums/j143/o...xhaust.jpg
new hks intake - http://i79.photobucket.com/albums/j143/o...Intake.jpg
Web 101 - http://i79.photobucket.com/albums/j143/o...mspecs.jpg
Web 577 - http://i79.photobucket.com/albums/j143/o...aminfo.jpg
Web 294 - http://i79.photobucket.com/albums/j143/o...mspecs.jpg
TRD timing (AE86 Bible) - http://i79.photobucket.com/albums/j143/o...aminfo.jpg
TRD timing (AE92 Bible) - http://i79.photobucket.com/albums/j143/o...312304.jpg
Toda 264/7.9 - http://i79.photobucket.com/albums/j143/o...a26479.jpg
Toda 256/7.9 - http://i79.photobucket.com/albums/j143/o...a25679.jpg
Kamikaze KK294 - http://i79.photobucket.com/albums/j143/o...amcard.jpg