240z Block power?

[Marvis]

Hello my name is Marvis.

I was wonder can you get serious power of of the L24 block.

And if you can how. Everyone tells me to just go with the L28 block and tubro charge it but I would like to see what can a L24 do. I would adlest like to get more then my 240sx. It all stock.

[VaGuS510]

I think 250 at the flywheel should be safe, this would be a turbo engine, bored to 85mm and stroked to 79mm nearly making it an L28. The only major benifit of the L28 turbo blocks is that they have siamesed coolent passages between the first three and last three cylinder walls. This makes the block stronger. Someone correct me if i am wrong but i believe most racing 240z's have to use a stock 240z block. I figure if the F54 block can take 400hp reliably then a P90 block should be able to take 250hp. For me, 250hp would be enough.

[Marvis]

Well, my brother and I am looking at SCCA racing. I know some classes you can do engine swaps, but it has to be from the same family. So we have been looking into right now. I know that they consider 240z, 260z, and 280z part of the same class. 280zx are in a different class. I believe that is because 280zx 81-83 were trubo. The guy who had the car before me use it to race. He put a cage in it and lowered it. He told me the engie was stock and is was putting 20-50 oil in it. Which to me was pretty thick. I can only drive the car in warm weather. Its has to be adlest 50 out or it will have trouble with it while driven. I am parting out my other

240z. I was just thinking since I was going to try to race it, it would be good to have another block.

[pimp1911]

With SCCA if you are doing club racing and fall under production catergory/Group EP you have to use a L24 with a 240z. Compression Ratio can be 12:0:1 and use 2 Hitachi SU carbs. I think the same rules apply for improved touring (ITS-D).

[beandip]

Just for clairification . the only difference between a F-54 turbo and a F-54 na block is the NA engine has flat top pistons . The blocks are the same. The turbo engine has a P-90 or P-90a head and he NA engine uses a P- 79 head. All stock L-28 280 engines have dished pistons.

[John Coffey]

The SCCA EP engines make from 225 to 250hp at the crank. The SCCA GT2 2.4L normally aspirated engines (15 or 16 to 1 CR) can make around 350hp at the crank and are spun to 8,500 rpm or more to get those numbers.

[Marvis]

I was thinking with SCCA that you could swap the regular 280z engine. I am pretty sure it the same family and or class. However 200 horses sound pretty for a 240z. I had not did anything to this car yet. Just looking for ideals.

[vin00127]

ill be running a 240z with 2.8l modified NA in the GT class

rebello builds a l28 stroker for the street that runs on regular gas

over 300 hp

[red_dog007]

Even though like 200hp to 250hp may not seem that much, with the car only weighing it at 2300lbs, it should do a LOT to performance coming up from 150hp.

[beandip]

Dog , this is a 4 month old thread.