Camshafts?

[Nexus1155]

Ok, so I do not quite get this from everyone who i use to keep hearing that cams won't bring any new power?

The NA car in Siphon had new cams which made power so why not our 1nz-fe?

Has this engine ever been flowtested? or has someone just had a simple regrind of what they thought would work and it didn't?

I never saw anyones proof on this matter, especially for our turbo brethren wanting more? GARM!!!!!

But seriously, wheres the proof on this?

[06silveryaris]

cams make power regrinds or not, a aggresive lift and duration set up will help a turbo or n/a engine. I have to see any for the yaris here in pr but i am sure people are doing regrind because there are a few turbo echos and yaris around and going fast.

[06silveryaris]

it seems this guy is using factory cams I thought he had aftermarket after doing some research he claims it is a stock motor. Besides the turbo ect
http://www.youtube.com/watch?v=Edx3D42A3Wg

[Nexus1155]

thanks for posting up, yeah i am sure there is something to be had, even with a stock head. The link didn't work by the way

[06silveryaris]

Originally Posted by Nexus1155

thanks for posting up, yeah i am sure there is something to be had, even with a stock head. The link didn't work by the way

try it now

[Tamago]

any more specs on the build?

[06silveryaris]

not really I can look into it, but later i have to go back to work

[clappitty]

shot them an E-Mail. thanks for the link Cali

Glad I joined up on YW today.

Still need to read up on the few turbo builds.

[cdydjded]

Ok, so I do not quite get this from everyone who i use to keep hearing that cams won't bring any new power?
No one here has changed their cams in there Yaris, so you are getting opinions from people with no experiance on the matter
The NA car in Siphon had new cams which made power so why not our 1nz-fe?
Are you speaking of the one from Japan?
Has this engine ever been flowtested?
Engines do not get flow tested, cylinder heads do
or has someone just had a simple regrind of what they thought would work and it didn't?
Go here o learn about regrinding: http://www.autofieldguide.com/articles/099804.html

[PHXDEMON]

Wonder how expensive those head packages are

[blacksandiegovitz]

Originally Posted by PHXDEMON

Wonder how expensive those head packages are

around 1500-1700 depending on your core returns/shipping distance , I've looked into it...

[Nexus1155]

Honestly, I'm not sure of the specs on the stock cam. But I do have the specs on the regrind from Gude. If I had to guess, the only real change is probably duration. I don't understand how they could get more lift out of a stock cam. Not if all they are doing is taking material off. My understanding is that on a regrind you can change the lobe profile in order to have longer or shorter duration as well as a more or less aggressive opening of the valves.

Anyway, here are the specs on the Gude Cams...
Part Number: SCXBS01
Intake Cam: Lift - 0.420, Duration - 238
Exhaust Cam: Lift - 0.400. Duration - 238
According to the Gude website they include racing springs and shims, the power band is from 3500 - 8000 rpm and the idle is "good."

And as long as we are talking about Gude, they also sell a ported stock throttle body.
Part Number: N/A
Max Dia. @ Taper: 53.3mm
Dia. @ Butterfly: 47.0mm

Heres the dyno from the gude worked on engine with a very rich afr, if you lean it out you should be making more power



295 intake/285 exhaust cam was the specs from the siphon car..

Who has an extra $400+ cash for mods and doesn't mind a week downtime and wants to try this!!

So to get good NA power out of this we are saying, cam regrind, and raise compression, and 1zz throttle body? to keep everything low cost. because I think i remember someone who was working over the head said the head wasn't really restricted to begin with and is well crafted..

[turboecho2005]

I know a guy who has been doing cam grinds for years and years. if you guys are very interested in them i can inquire. but just to let you know that the power you'll get verus the price you pay won't be worth it. Usually factory cams work well on a turbo'd car. I don't ever plan on changing mine...

[cali yaris]

+1. We tried twice to do the cams on my tC and it lost power both times. Rado's Time Attack car has stock cams in it. I know that's a 2.4L but it serves as evidence.

[ROCKLAND TOYOTA]

the guy from california who works for junction produce(don't know username) supposedly has the GUDE package on his car......

[turboecho2005]

i sent an email out to an old friend who does cams. he actually got back to me in 15 minutes! which is amazing cause its canada day. I gave him specs on the stock duration and lift and valve angle. he said he'll do some research and see what he can do. If its doable he'd need a cylinder head with stock cams for exact measurements.

[Yaris Hilton]

Originally Posted by turboecho2005

Usually factory cams work well on a turbo'd car.

Agreed.

Just out of curiosity, does anyone have the specs on the stock cams for the 1NZ-FE?

[cali yaris]

^ see the post before yours, apparently turboecho has the specs.

Post them up, turboecho