Head swap 2ZZ-GE to 1ZZ-FE?

[SigmaProjects]

hehe I think you just made more questions for him. So yea... I forgot to ask the girl about the ITBs on her celi, do you know what brand those are?

[01_Celica_GT]

In the VVTL-i what is the "lift"? what is the "lift" actually lifting?

What is the point of getting your head ported and polished? aren't they going to just get dirty again?

And what does getting your head "ported" mean anyways? polished is kinda self explainatory...

If i got oversized valves would I need to get a "port job"? and with the oversized valves would I need to get oversizes valve springs too?

What is a valve float?

Does the ITB help the celica a lot more then just having a cold air intake?

And with the ITB you couldn't get forced induction could you?

Where could I get some ITB's?

[Vip09]

Actually there is a 7th gen celica running 10's.










Spec apparently is..

Engine: ST205 3sgte, 2100cc, 650ish bhp. HKS Stroker Crankshaft Crower Rods JE custom pistons ARP bolts HKS camshafts HKS cam pulleys Ferrea Valvetrain Dual valve spring conversion. Fensport Racing cylinder head. Fensport racing intake manifold. Turbocharger System: Garrett GT3542 Ball bearing, watercooled HKS stainless tubular manifold Tial 44mm racing wastegate 90mm Exhaust system. Titanium rear silencer. Transmission: Fensport Racing triple plate clutch. Fensport Racing 5 speed H pattern, Dog engagement, Straight cut gearbox. Fensport Racing front LSD plate type. Cusco Rear LSD plate type. GT4 driveshafts. Cooling systems. Aluminium double row Radiator. Swirl pot and Header tank. HKS Supra intercooler. Exact Oil cooler. Exact Fuel Cooler. ERL water injection Suspension: Tein Flex coilovers. Superflex Poly bushes. Adjustable camber front and rear. Carbon strut bracing. Brakes: Tarox 330mm vented disc with alloy bell and 10 pot calliper. Rear 270x10 solid disc with 6 pot calliper. Fuel system HKS 1000cc injectors HKS fuel rail. HKS adjustable pressure regulator. Aeromotive High capacity fuel pump. Aeromotive pressure regulator Holley Lift pump Swirl pot. -10 Stainless braided fuel lines. Electronics: Custom wiring loom. Motec M4 professional ecu Lambda control Data logging Boost control Launch control Full throttle gearshift Motec Sport dashboard. Exterior: Carbon Bonnet with custom vent Carbon Tailgate GT type front bumper and C-one spoiler. TRD Rear wing Polycarbonate rear window. GT Rear lights. Wheels: Rays TE37 Tyres:TOYO R888 - Road Legal

11 sec quarters on its first runs when the car was only 3 days old

a week later it went 10.63 @ 134mph

[SigmaProjects]

umm geeze, lol. Too bad he's a UKer... now how about a 10 second 2ZZ 7th gen =P

[91 Celica St]

In the VVTL-i what is the "lift"? what is the "lift" actually lifting?

the L referse to valve lift, theres a second lobe on the cam that lifts the valves highger and sometimes for a longer duration, its like haveing a stock cam for lower rpm (better gas mieleage more response) and an agressive HP cam for higher end, i believe the crossover is at 6000 rpm on a 2zz

What is the point of getting your head ported and polished? aren't they going to just get dirty again?

porting referse to opening, opening the ports (dosent always) gives more flow to the head. polishing makes the port smoother to allow better flow, but usualy the intake port is not polished and is left slightly rough due the the gasolinene and air mixture

And what does getting your head "ported" mean anyways? polished is kinda self explainatory...

look above

If i got oversized valves would I need to get a "port job"? and with the oversized valves would I need to get oversizes valve springs too?

prettu much, not unless the valve stem changed size (sometimes does), the valve connects to a keeper/retariner that keeps the valvestem attached to the srping, you would need a dirrent set of retainers/keepers but not a diffrent valve

and yes you would need a "port job" the holes in the head have to be mahicened to fit the bigger valves, its called a valve seat, and they need to be set to be able to seal with the new valve

What is a valve float?

your engine is designed to revv to a certain rpm due to the vavletrain, and bottem end, usually the lighter the bottem end the higher you can revv (less roatatioal mass, i.e. why the 1zz crank is used in turbo 2zz's, cuz it is heaveryer/stronger) also the vavltrain playes a factor, the spring is used to push the valve back into place, if the spring is too weak it can actually not even be fast enough to pull the valve back into place by the time it needs to be, witch it what valve float is, the valve train moves too fast and the valves dont have enough time to open.close properly.

Does the ITB help the celica a lot more then just having a cold air intake?

yes, think the stock 4afe TB is only 42mm, what if you had 4 38 mm throttle bodies? they flow alot better

And with the ITB you couldn't get forced induction could you?

you have 4 inlets instead of 1, you would have to route the charge pipes to all 4 openings and hope they are all recieveing the same amount of air, becuase if not you will run too rich/too lean

Where could I get some ITB's?
for what? usually you have to build your own, you could have somoene build them for you or find a used one thats already built....i love the sound of ITB's, and they add adecent amount of power

[Vip09]

Originally Posted by 91 Celica St

What is a valve float?

your engine is designed to revv to a certain rpm due to the vavletrain, and bottem end, usually the lighter the bottem end the higher you can revv (less roatatioal mass, i.e. why the 1zz crank is used in turbo 2zz's, cuz it is heaveryer/stronger)

The 1zz crank isn't any stronger than the 2zz crank. The 1zz crank has a longer stroke than the 2zz crank. So when you put the 1zz crank in the 2zz you get yourself a displacement of about 1.97 liters (pretty much a 2.0). Most people running stroker zz engines are n/a btw.

[01_Celica_GT]

Thanks a lot dude, I thought people were ignoring me. lol

If you were running a stroker zz why wouldn't you wanna put forced induction into it? Stroker engine stronger right?

What comes with a stroker engine?

[6speed]

www.newcelica.org you can register there and search around to learn all of this stuff

http://monkeywrenchracing.com/toyota..._packages.html
with the stroker you have the option of a high compression package for more hp n/a which is usually the choice

[91 Celica St]

no the 1zz crank is stronger, its much heavery and built out of the same material, i.e. the 4age crank (20/42) is way stronger than the 18/40 crank becuase the 18/40 crank is way lighter witch enables it to revv higher, thats simple pyshics
its exactly like the 20v 4age cranks, the silvertop revs to 7800 and the blacktop to 8400 but people use the silvertop becuase its heavyer therefore it can take more of a beating

the 1zz crank is stronger

[01_Celica_GT]

what does the "18/40" and the "20/42" mean?

[91 Celica St]

crank journal size, the mr2 in my driveway is a 18/40mm crank, all other 4ages other than the 1st gen ones in the mr2 are 20/42 becuase its alot stronger and has beter oil passageways

[Vip09]

Originally Posted by 91 Celica St

no the 1zz crank is stronger, its much heavery and built out of the same material, i.e. the 4age crank (20/42) is way stronger than the 18/40 crank becuase the 18/40 crank is way lighter witch enables it to revv higher, thats simple pyshics
its exactly like the 20v 4age cranks, the silvertop revs to 7800 and the blacktop to 8400 but people use the silvertop becuase its heavyer therefore it can take more of a beating

the 1zz crank is stronger

Nobody has EVER had a problem with the 2zz crank. I was saying people don't go to 1zz cranks because they are stronger, they use them to increase stroke. As much as I read newcelica.org, I've NEVER came across anyone that was worried about the crankshaft not being strong enough in the 2zz. It hasn't been a problem yet, and I doubt it will be in the future.

[01_Celica_GT]

I wouldn't expect it either considering the GT-S is supposed to be the top of the line celica.

So what journal size would you recommend if you were going to swap cranks?

[91 Celica St]

usualy the bigger the journal size the stronger the crank, but the less ability it will have to revv

more weight usualy means stronger, less weight means weaker but more ability to revv

im not doubting the ability of the 2zz crank, i just know that the 1zz is stronger...just like how the 7afe crank is actauly stronger than the 4age crank because its bigger and heavyer, plus it adds displacment

[01_Celica_GT]

alright, now i got a question. They say the ideal rod to stroke ratio is 1.75. What crank would give the best rod stroke ratio? 1zz oe 2zz? Considering everyone agrees that 1zz is better in the 2zz block.