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Awesome stuff eh? You can see how hard it is on the motors. 50+degree slope, and the motor is under hardcore load for 10+seconds The unlimited turbo sixes run on nitro, and push 60 psi. The nissan 4.8l engines make awesome power, like 2500+hp, but have a lifespan of only a handful of pulls (4-6 seems to be a common number-and the 1FZs are just as temporary when in that guise). The TB48 can make more power than the 1fz (capacity and better flowing head), but it requires abit more fortification than the 1FZ to survive at the same power level. The oil pump fails due to a shearing drive gear that is usually replaced with a billet steel one apparrently. Conversely though, the TB48 reportedly has less trouble with respect to head retention. (at big boost the 1fz needs a bit of work/parts to keep the head gasket alive.
Due to toyotas habit of massively overengineering engines for 4wds + light commercials, the 1FZ block is bomb proof and will support 2400hp on nitro, and the crank (I have found just out recently from some guys in dubai) is good for 2000 hp (TB48 is the same in the crank department-awesome).
Also-I found a clip that isn't in this thread yet.
The first run on the clip was actually the last run for it for the meet. It had the '1000'hp plain bearing GT42T42/4 on it, the plenum was the one I built with the velocity plate inside and the engine itself was 100% stock. It was running about 320rwkw at 17psi or so on 50-50 avgas/BP ultimate from memory, de-stalled converter, MV gearbox. That run is actually the cars first 10 second pass. It had been spinning all day, and I was going to put it back on the trailer until alex called me soft for not putting the drag radials and having a crack. I was only going to get 1 more run as the night was over, so I drove it off the line gently and short shifted to second where it just stuck beautifully on the BFGs and got going. It was a 10.9@129 I think. I was shocked because the run was so un eventful-it didn't feel like it was going much faster than normal.
One of the runs in the 'grandstand' lane you can see it get all out of shape with the simex light truck tyres on. They were actually pretty good in the traction stakes. It still did an 11.8 that run,but the run with the commodore was good and it ran him down about 10 car lengths for an 11.21 @ 130
That was a good day-11 years form when I bought it it finally ran a 10-but I learned a heap through those years so it was far from a waste of time-and it ran 10 with not a single off-the shelf anything-which was satisfying.
Oh-and obviously it still had the bogan spec scoop to hide the huge hole left in the hood after the modified factory inlet manifold was replaced with a beter one I made up. I'm thinking of using it again actually-my inner bogan coming out,
The 6061, 20mm thick mains girdle blank came from the watercutters the other day, so now I have to do machining/relieving to clear the rods and counter sink the stud holes to get the correct thread engagement on the ARPs.
Before I left I also bit the bullet and hacked into the firewall to allow the motor to be moved 6-8 inches back-which will mean I will finally have room for fans on the radiator, and not have them on the outside of the intercooler. (Although I'll still keep intercooler fans as they work ridiculously well)
I'm going to be on this build with gas in the next week so some progress will actually happen.
I'll tub this car, but I think that running low 9's/high 8's consistently is about as far as i"ll target. With 1500hp (hopefully) the crown will not be a pretty site, so I'm thinking that once the motor is done, car done and I've had some fun, I'll purchase a cheap comp car and put the 1fz in that. Seeing the MPH that archie kajewski is getting out of his awesome S6 rx7 (172?) with only a 13b just shows the benefit of a late model shell.
Sean:w:
Adjustable cam gears for 1FZ-FE now ready for sale - 10 degrees advance/10 degrees retard. Suitable for all variants of 1FZ-FE.
(adjustable scissor gear for changing separation angle between the intake and exhaust cams coming soon)
Below is the 20mm thick, 6061 alloy mains girdle I drew up and had watercut. It needs some machining yet, but you get the idea. Should allow for 8000+rpm.
And the custom grind cams I ordered from the middle east also turned up.
They aren't billets, but brand new cast cores, ground to the spec a mate generated using an engine simulator program.
Duration is up around 300, with lift over 400.
In the picture from left to right is an Arab cam, an Ivan tighe cam and a stocker.
Adjustable cam gears for 1FZ-FE now ready for sale - 10 degrees advance/10 degrees retard. Suitable for all variants of 1FZ-FE.
(adjustable scissor gear for changing separation angle between the intake and exhaust cams coming soon)
Yes-you're right Alex-it could be borderline. My numbers say they should be capable of close to 1500hp at 50psi base pressure. I'm also planning on ditching the intercooler and shoving a couple of injectors in the compressor housing which should allow the intake charge to get below ambient (I need to check the volume of methanol required though first)
In reality however, if even I get within cooee of 1500hp I'll be over the moon.
Adjustable cam gears for 1FZ-FE now ready for sale - 10 degrees advance/10 degrees retard. Suitable for all variants of 1FZ-FE.
(adjustable scissor gear for changing separation angle between the intake and exhaust cams coming soon)
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