240Z Turbo

240Z Turbo Burnout - old motor setup

FL327, your money is on the 510??? No offense SSS510, Chuckle...Chuckle....Chuckle! Let me get this straight, let us just assume that both engines are built the same(block&head) and traction is equal. A slightly modified CT26 makes dick for power, MR2's are running mid to high 13's with slightly modified CT26 turbo's. Now, the setup is not intercooler, power lose right there. My twin 16G's support 1010cfm @15psi ontop of the fact I have a tubular SS header. Not to mention custom intake manifold and NOS. Hell, Mitsubishi's are running 11's with one of my turbo's. Put that to a LSD that is driven by a built automatic and 5800 stall converter. You V8 guys are funny...hey did you see my new 500hp crate motor??? Yea, how did you do at the track??? My 500hp crate motor ran 14.1! Wow, sounds like your 500hp crate motor makes 200hp! Anyway, I like to stir the pot...just kidding around and I look forward to seeing how your turbo setup runs. I would suggest an IC even with the NOS. It will allow you to run upwards of 17-19psi on 93 octane and the benefits below 10psi are very noticable.

The setup looks pretty cool. You need to fire your welder for putting those dirt dobbers on your downpipe. I had thought about converting to port injected NOS, but knowing I did not want to run more than a 65 shot did not justify the cost. Do you have specs on the turbo and engine setup? Also, how much NOS do you plan to squirt? I think you will be happy with the results. Maybe we can race some time...with or without NOS? BTW, why have you chosen not to run an intercooler? You are robbing some serious HP potential!

BTW, my next door neighbor has a lift in his nice new house. Nothing like a garage door that is oversized with an extended ceiling for his pretty new lift! Oh, the point of my story is that he has an immaculate Pantera sitting up in the air on that lift. The hopped motor made 284hp&331ft-lbs @ wheels and he let me drive it one day. It was cool and very loud. Ok, later!

Norm, remind me to never let you borrow my car!

Yes, the bolt clears, but I will most likely replace it with a shorter SS one so it is no so close to the boost control solenoid.

quote I'm your Huckleberry!

I will probably run in the 18# range on pump gas and upwards of 23-25psi on racegas. I will only spray a 65shot or so because it is just a single fogger setup. Yes, it should be interesting.

I know this really cool guy that is also very smart that is almost finished with a twinturbo setup in his 240Z using the L28 motor. Girls just love this guy and think he is the best thing since sliced bread! He once saved the life of a sparrow that had falled from a tree by fixing its broken neck with some tape and popsicle sticks. Anyway, here is a link to some of his pictures. http://www.eng.fsu.edu/~jthagard/3liter/pics/ttheader

I wrote an article on Zhome.com http://www.zhome.com/ZCMnL/tech/autometer.htm

From everything I have heard, this alone will add around 40hp@wheels on big boosted setups. You have to remember that with the stock cast manifold you have cylinders 1-4 flowing through 1 small opening to get to the turbo. Not a very efficient design. It is the same concept as adding headers to an N/A motor. You free up restrictions in the exhaust which allows you to make further adjustments to take advantage of cam timing. The equal length helps to seperate the exhaust pulses so that they hit the turbine wheel 1 after another in a sequence. It basically boils down to a freeflowing exhaust and because turbo cars are forced induction you need more exhaust flow to compensate for the increased flow into the motor.

Mike, just call me anytime to come by. BTW, Scottie has your hoses at his house. Sorry it took so long to get them to you. Hopefully it did not hold you up.

Just wanted to post some more pics. These are of the Stainless heatshields I made for both the compressor and turbine housings. Nothing a sheet of stainless and a hammer can't create! Ok, so the shear helped too!

It is getting close with only intercooler piping, exhaust and electrical remaining. Here is a pic of the intercooler mounted Pic of the modified oil drain into pan. Lastly, some turbo pics.

the car went 11.2@124 with stock 3.08 gears and street tires. It has an automatic that was launched from a dead idle from the starting line. It will run faster, but is currently out of injector.

I know this car and have seen it several times inside of Turbo Specialties. It runs low 11's on pump gas and is makind in the 550hp range. Nice setup and a monster Spearco intercooler. You can call Reed at TurboSpecialties if you have specific questions.

Man, $159 shipped to my door in less than 4 days and it is an 8pt NHRA legal jobber. It looks nice and the ends are pre-notched to aid in fitting. I will try to get it installed to let everyone know how well it actually fits. I am pretty good at modding things so if I have to do some grinding it is no big deal. Will keep you informed.

Let me be clear about what I have posted. It was my understanding the question asked was, "how high can the L be revved?" It is true the L4 can outspin the L6, but the L6 can be made to spin to 9K. As I have been told there are 2 distinct rpm points at which crank resonance appears, but I cannot remember what rpm points those were. My info is based on talks with Don Potter and Jim(Sunbelt). There is a difference between asking what is the rev potential and the powerband for a certain engine setup. Lifts in the .550+ range and high durations would be needed to benefit from making peak power so high. When I dynoed Joel's turbo L6 it still made 330hp@wheels at 6800rpm before I shut it off. It all depends on the mods you have done to your motor and the application you are intending the motor for.

Not true, the L can rev to 9K if properly built, but most race apps see about 8K. The redline on my stroker is 7200rpm with no problem or worries. I would say 7K is a good pratical limit for most apps and unless you have the car cam'd for the higher revs you don't get much out of it.

I tell you what, my old setup was similar to yours, 2.5" exhaust, 6-1 headers, filters, MSD ignition and coil. I swapped in the Motorsport auto 290dur cam and it was a huge difference. I also had the the flattop 2.8 bottom end.

Ok, I saw that someone posted that S&W was selling cages for $40 off this month so I ordered one. It was $160 shipped to my door and will be here by the end of next week. Wouldn't you know it, I already have subframe connectors! That was my old ground dragger exhaust system. You can also see the spacer for my Viscous LSD conversion with CV's. BTW, I have a buddy here local that will install for $100.

Quality welding is the biggest key, but you must support the turbo off the block and you should have no problems with cracking. The weight of the turbo on the manifold combined with heat and vibration is what causes the cracking. My front turbo will be braced to my motor mount and my rear turbo will be braced to the rear of the block. From what I have heard, if you do these things you should not have a problem.

Scottie, I am embarassed to be your friend. Do you not see how I have constantly updated my pics and progress on the twinturbo header. What is your problem MAN? If you are just going to tease us all then I don't want to be your friend. Please be more sensitive to my feelings and needs. Thanks!

I guess there are 2 modes of thinking on the header depending on what you want to do. First, the fact that you are using a header over the stock manifold will give you significant gain. So who cares if it is equal length. On the other hand and equal length header is said to provide better throttle response because the pulses are spaced more equally. In short, an unequal length header is better than stock and an equal length header is better than an unequal length. Am I just rambling or what? I have no doubt I will attempt another header in the future for stock applications and outsource it to a company like Kooks to fab them for the masses. I would encourage anyone who wants to make a header to do it over the winter break. TimZ are you listening? HEHE!