Some other 3vz-fe owner, test something for me

[Toysrme]

^ we all know I made my stock ports smaller to have a higher velocity intake flow.
blah blah blah
High velocity porting benifits from more camshaft overlap time. (intake and exhaust valves opena t the same time)
I just slipped my exhaust camshafts 1 tooth and oh, holy shit... Huge power increase. (gtech it later)

What I want, is for somebody with a 3vz-fe to slip their exhaust camshaft one tooth.

What I want to find out, is if the stock profiles benifit from it.

Tools needed:
one 10mm socket - 1/2" drive
wratchet - 1/2" drive
socket extension between 3 and 6 inches - 1/2" drive

You will also want a small torque wrench (Unless you just want to guess putting the cams back down... That's a nono tho!)

Time to do this is if you've ever actually taken a camshaft out of your heads, and you have a driver (cordless drill with a socket chuck, or air tools) : 10m.
Never seen what's under the valve cover: 1/2 hour to hour. I'll walk you through it on the phone (my dime) if I have too.








Anyone eligeable but Sean (McElligott) or Luckynumber5. As Sean ash the turbo now, and porting, and luckynumber5 has porting too.

[ag6286]

Id do it but im not at home and my 3vz is ported like crazy for l8r forced induction mods.

[Toysrme]

AG you can do it on your own and let us know.

However, I'm really curious as to what happens to the stock cam/port profiles.

[ag6286]

i should finish putting my car back together mid may after i get home from school, after i break in the new rebuilt, modified engine ill try it and let u kno how well it works with the xtra porting and a bunch of other stuff

[Wibbit]

i would but i dont think youd wanna call to australia! but i will try it when the head goes through with the port n polish (might be a while tho)

[Knailgun]

not doing it.....sorry...foced induction is en route....

[95camguy]

damn no one is hooking up toysrme today huh? i cant help u cuz i got a 1mz. however, my buddy is coming by in a bit and if i can convince him we can use his car. its got the right motor but very high mileage(210K miles). i been dying to use my new click-type torque wrench too. plus i got a cell phone so it wouldnt cost anything to call ya.

he gets outta work at 6... ill let u know

[95camguy]

^^^ my buddy wimped out.

sorry to get u excited

[LupusUmbrus]

Anything other then the tools you listed needed? All I don't have is a torque wrench, and I've been meaning to pick one up. No power tools though.

I might try this out if the chances of messing up the engine arn't terribly high.

[BlueFusion6851]

toysrme... if you dont want to pay for phone charges, maybe just take pics of how to do it and pm or im it to me ... cause i'd love a little more power!

[JetspeedCamry]

Theoretically, does this principle apply to the 2VZ??
What exactly are you doing by moving it one tooth...and what sorta gains to you see??

[sanengo]

His engine pinged after a knock sensor went out, so we won't really know what this did until he gets a new knock sensor.

If I understand correctly, he retarded the camshaft pin by 1 degree which in theory would allow his high velocity porting to take advantage of a faster enter and exit of air/fuel mix through the cylinders.

I'm not sure how this could help non-ported engines, but it could possibly amplify the performance of any intake mods done on the car?

[ekim55121]

would this work on a 5sfe? at all?

[CrawlingEye]

ekim, it's likely different on the 5S-FE from the 3VZ-FE. what he did was slip a tooth on the camshaft's inner sprocket to get over-lap, meaning the intake valves begin opening while the exhaust valves are open.

I'm going to check once I get my new cams and count camshaft sprocket teeth and calculate out how many degrees slipping a tooth (or few) would equate out to. It may or may not be worthwhile to see if a shop would grind/hardweld the sprocket to enlarge it (valvecover providing) and grind out more teeth, allowing finer adjustment.

[Toysrme]

CrawlingEye I don't have my front valve cover on, if someone reminds me tomorrow afternoon, I'll count them.


I use to know at one point... It's insane tho, somewhere around 20*, +/- 5*.