ZPIracing

The stage II head is a difficult install not an impossible one. If you can install a clutch you can install a head. The factory service manual offers very detailed instructions and would be highly suggested to any novie attempting this install.

The stage II head alone will not offer that much power increase over a Stage I head. We have tested this on a turbo car we have not tested it for whp increase on a N/A. simply becasue we know it works and we do not have a non boosted tC anymore.

The thing to keep in mind when doing more hardcore parts for the tC and this is just the begining is that the bolt on power may not justify the cost but they are required to reach the next step. With this head our all motor pistons and a tune 200WHP is very easily obtainable.

-ZPIracing

texasisbigger

but there is not even a dyno for this head, ther stage one head, or your pistons!!!

-BrianH

PghtC

to ZPI: how streetable is this? Does it affect the driveability at all?

freestyle789

if they can prove those numbers i think more people will go all motor instead of F/I, 200whp, plus i/h/e and other little stuff can get you up there and its still cheaper than turbo and less mantinece

jwaggz82

iTrader: (1)

zpi can we have some facts?

zer0

1mm over valves? Super or Special Alloy?

soros151

^^^ and the difference is?

soros151

no more info? bump

jwaggz82

iTrader: (1)

ripp mods is looking for a stock head - if someone can get one ross might be interested in getting another head out on the market. contact ross@rippmods.com

soros151

just go to a junkyard, plenty of them.

Neothin

remember, it doesn't have to be from a tC. You can bum one off the camry, rav4, highlander, etc etc. Just make sure there's a 2az in it :D

soros151

Actually, I would be on the safe side and take one from the tC, it seems Camry parts can't be used on our cars. There is a discussion on this one 2AZ internals thread.

zer0

bearings only... forged Rods and Pistons fit all 2AZ's

06SuperWhite_SoCal_tC

Because the Head is where you going to find a lot of Power Gains. You can do so much with a head its not even funny.

soros151

What other things can be done to a Head?

TCpete

bump because im looking into a head swap or piston upgrade... ZPI what about EMS's? what kind of piggy back should we be using for this the stage 1 or 2 head?

Neothin

port+polish
Lightweight valves
stronger springs to keep them on the camshafts
3/5/full angle valving
knife edging parts
cams

etc etc etc

soros151

Stage 1 I think a simple fuel management will work. With Stage 2 I think you should use e-manage Ultimate which can raise the rev limiter or another EMS that controls fuel and raises the rev limiter at least to a 7200 RPMs.

Neothin

You don't *have* to raise the limiter, you *can* raise it if you want to though.

zer0

You will want to when you have a large turbo, stay in boost longer, and land a shift in a good portion of the RPM range.