Engine internals

[celicauk]

Does anyone know of a supplier for uprated engine internals. I can get the head reworked no problem, but I can't find a supplier for conrod, crank and pistons.

Also, does anyone know if the engine can be bored out to say 2 litres. If this can be done I can fot Cosworth pistons and just get the crank and conrods tuftrided.

BTW, my engine is a 1ZZ-FE.


Cheers

[Unity112]

If you look around this forum and the general forum, you can find contacts and info pertaining to an array of parts that are in development. Golden Eagle will have top quality sleeves for you (no need for boring). Crower is working on some. Skunk2 needs a volunteer. Ferrea should be able to custom some valves. And should be producing their other internals.

Give me some info about your Cosworth pistons. I'm curious about that. But Wiseco can custom some pistons too if you don't get the Cosworths.

[vvtlikick]

Originally posted by celicauk
Also, does anyone know if the engine can be bored out to say 2 litres. If this can be done I can fot Cosworth pistons and just get the crank and conrods tuftrided.

BTW, my engine is a 1ZZ-FE.The 1ZZFE can be increased in displacement to 1.93L simply by running the same bore as the 2ZZGE (1ZZFE: 79mm, 2ZZGE: 82mm).

To reach 2.0L, you have to increase the bore to 83.5mm just like the World Racing Drag Celica (http://www.world-racing.com/), however since they're running the 2ZZGE's reduced 85mm stroke (versus the 1ZZFE's 91.5mm), their displacement is only 1.86L.

[celicauk]

So does that mean I can just have the engine bored out and fit it with VVTLi pistons and con rods. I think 1.93L is close enough to 2.0L.

Thanks

[vvtlikick]

Originally posted by celicauk
So does that mean I can just have the engine bored out and fit it with VVTLi pistons and con rods. I think 1.93L is close enough to 2.0L.

Thanks I'm pretty sure the con rods from the 2ZZ wouldn't with a 1ZZ block and crank, most notably because of the longer stroke.

I think the pistons might work, but I don't know if the resulting compression ratio would be workable. It might be (much!) higher because of the longer stroke of the 1ZZ ( >11.5:1), or it might be lower because of the different combustion chamber geometry of the 1ZZ (<11.5:1). I don't know for sure. Also, I believe the valve angles are different between the 2ZZ and 1ZZ, so the valve reliefs cut into the pistons would be different, but I don't know if they're different enough to be a deal-breaker.

[t2000gts]

speaking of which, how high a compression do you think the 2ZZ can handle on stock internals? and how much power gains could you expect?

this seems to me to be the easiest 'n/a' way for some quick power.

[vvtlikick]

Originally posted by t2000gts
speaking of which, how high a compression do you think the 2ZZ can handle on stock internals? and how much power gains could you expect?

this seems to me to be the easiest 'n/a' way for some quick power. I think our compression ratio is more limited by the octane of the gas we get, not the strength of the head gasket and such.

The only current US market car I know of that has a higher CR than the 11.5:1 of the GT-S is the S2000, with its 11.7:1 CR. For comparison, from my reading about the Speedvision World Challenge (http://www.speedvisionwc.com/), the Celicas there appear to have used a 12:1 CR on 103 octane gas (RON: 107, MON: 99). (Note: the fuel used is VP Racing's (http://www.vpracingfuels.com/) Motorsport 103, a unleaded, street-legal :eek: gas.)

[Jesse IL]

Dumping money into the internals of a 1zz-fe is not really worth it IMO. You could spend the same money and get much more power with a turbo kit and stock internals. Even if a turbo costs more in parts, the labor would be significantly cheaper.

[celica gte racing]

what are you up to simon? :D i want in!

[vvtlikick]

Originally posted by t2000gts
speaking of which, how high a compression do you think the 2ZZ can handle on stock internals? and how much power gains could you expect?

this seems to me to be the easiest 'n/a' way for some quick power. I forgot to add, I think I remember reading that a full point increase in CR (i.e. 11.5:1 to 12.5:1) will give roughly 4% more power. Of course this assumes that you don't blow up the engine :shaking.

[celicauk]

Ok, for those who are curious (celica gte racing). My intention is to increase the cubic capacity of the engine to 2.0L or as near as damnit. The reason for doing this is because I intend to run a high boost turbo system (somewhere in the region of 20 to 25 psi). In order to do this the engine is going to need some serious fettling.

The increase to two litres will help a lot with upping the torque figures which I will need to get away from pure bhp gains. At the end of the day as all you big engined americans will knowm there is no replacement for cubic inches!

I may never attain the boost levels I am stating above, it may just prove impossible without a small lorry load of cash (which I certainly won't spend on the celica), what I do believe is possible is a good bhp figure of around 350 to 400 and a torque figure to match.

Once David Draper has the turbo system ready (not that I'm hassling or anything Dave :rolleyes: ) I will be fitting this immediately, this will give me an idea of the gains to be given from low pressure systems. Then in the new year I will be sending the car away to have magic done to the head and incease its capacity. Also I will be fitting an LSD, flywheel and uprated clutch, not to mention a large rotor set and probably six pot calipers up front, and a few suspension mods.

This should give me a car that can contend quite nicely with some of the Supras round here (it is a lot lighter) and most importantly put me in a position to kick the ass of a 450bhp porsche 911 owner who has been giving me crap about jap motors being junk.

So basically its all about ego, mine, and thats a BIG ego I can tell you, they do call me god at work after all!

Cheers

BTW all comments welcome

[celica gte racing]

im right behind you buddy :) if u need any info on jdm parts feel free to ask! its good to know someone has a bigger ego than me :D

if you wanted the make the 911 look like crap you ought to look for a skyline or a supra :mad:

[t2000gts]

300-400 torque at the crank? with either manual or auto, you're gonna run into some big problems.

which can be described with one word: traction

all the high horsepower hondas have it, and so will you. the 6-speed's gearing is so short, you can spin the tires 0-60 with a 50 shot of nitrous (260hp/tq at crank). imagine 300-400.

you'd definitely need to do some transmission work (manual or auto), and most likely need to widen out the gearing (new final drive i recommend) if you don't want to go through tires like a cop goes through donuts.

[XskoopX]

Originally posted by Jesse IL
Dumping money into the internals of a 1zz-fe is not really worth it IMO. You could spend the same money and get much more power with a turbo kit and stock internals. Even if a turbo costs more in parts, the labor would be significantly cheaper.

So very true, but to me (personally) All Motor gets more respect. Yea, it takes parts, anybody can buy them. Same for turbo, just need more boost and NOS, need more to spray. But All motor takes BUILDING and ENGINERING. Yea, it cost twice as much, takes more dynoistics, and defintely every detail to get every inch out to squeeze some power. But the RESPECT AND PROPS is what you get in return.

But thats my 2 cents.

[celicauk]

Traction, new LSD and a racelogic controller should sort that out. Also I am currently trying to mould a set of wider arches so I can lay more rubber on the ground.

Skyline, Supra, Nah, common as muck mate, go to any meet and there be a dozen or more of each, last meet I was at there were only two gen 7s and mine was the most modified. The 911 is a starting point and doing him over in my "little" car would just be too much fun. Then I can go and tak eon some skylines and see where we go from there!

As for engine mods (not just bolt ons) being the best kind, I also think this is true. No point whacking on a gigantic turbo and 200 shot of nitrous if your engine is going to melt. It also takes some real skill to do this properly. Fortunately I know a few good tuners who will do a top job.

As an aside, if anyone is serious about getting a supercharger I can put you in touch with a UK based company that can definitely do one for you. Just been looking at a Peugeot V6 24valve with a full custom supercharger and it is just incredible. This will only apply to UK unless you want to ship the car.

Cheers