Drax240z

I'm heading up island on Friday. Hopefully I'll get a lot done... I'll likely need 1 more weekend to finish things up though.

Al I can't really speak from experience, but from the posts I've seen from people that did the before/after comparison between a 4 barrel and dual SU's, every single one has said that the stock dual su's make more power, and the car just plain runs better. If you look at the manifold design of the 4 barrel intake, you'll see why... the runners get progressivly longer as you get furthur away from the center of the engine, #1 & #6 will be much longer than #3 & #4 runners... pretty darn hard to tune. Generally downdraft carbs on a side draft engine don't work... I'm sure you can find more testimony from someone here that has run both. If not, talk to Tyson at zcar.com. He did a before/after comparison.

I'm going with the mixture meter... I'll let you know how that turns out when I get there.

Definately used to decrease unsprung weight. Thats one reason F1, CART etc. use an inboard setup. The other for them is that they can be much more aerodynamic without having springs and struts cutting through the air, instead replaceing it with a oval shaped carbon fiber rod. Not an issue on fendered cars. Our F-SAE car will be an inboard setup, and I'm on the suspension design team. Hopefully I'll have some good insight at the end of the summer.

Jim, I would bet it was just the magnet. Rare earth magnets are extremely brittle... One wonders how they managed to jar it enough to break it with it screwed into the tranny though.

Glad to see you found us Steve. I've read the writups on your car at zhome.com quite a few times. I'm sure others could answer this better for you Pete, but ball bearings typically give you faster spool up, and largely increased longevity in the turbos. I would guess that the ball bearings would also help you achieve full spoolage (I just made up a word) at a lower engine RPM.

I should pipe in here too. Terry I love the look of that car, I noticed you had it up on zdriver.com and really liked it there. It just looks "mean" somehow.

Pete, I think that is not too bad. I've always been told that your ferrule has to be of a harder material (or the same hardness)than the line to get the proper compression and seal. The fitting body material shouldn't matter quite as much though, just as long as you aren't trying to use stainless steel ferrules in a brass body, etc. IIRC, Brass and aluminum (depending on types of course) are fairly similar in hardnesses, so it should be a decent solution.

Tony, check out my website listed in my signature, it should get you started. There are also a few links at the end of the turbo buildup tech article to other turbo Z sites, prepare for a bit of reading.

Evan, check this out: http://www.hybridz.org/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=16&t=000011 I'm sure the guy doing your welding knows more about welding cast iron than I do. Its not too hard though.

I think what you described will work. I'm always paranoid with fuel lines though, and I usually double clamp them. Probably not at all necessary. I believe there is a law as to the maximum length of rubber fuel line you can run legally, but I doubt you'd ever get caught. Just food for thought. I actually had a Z that had its return line rust out under the battery tray. I wasn't too keen about fuel spraying all over the starter and battery, let me tell you!

The 88? 240sx throttle body I have uses a potentiometer type TPS... Not sure if it'll adapt to your use, but I would imagine you could find a junkyard TPS that will do ya.

I'm going to be using an 82 Turbo rad, for what its worth. Minor grinding required on the bottom of the rad to get it into an early Z... It doesn't get too hot up here so I'm not too worried about overheating.

Lone, I broke off an easy out in a grade 12 bolt once. Does that count? Of course, I had to really try to get it to do it.

If you ask me, its about time one of the big three came out with an engine such as this. HUGE potential. What a great engine for any car.... But you are right, this thing shouldn't be in an SUV. I hope it gets in there anyway, because I think it would make a GREAT hybrid engine, for Z's or any other small sports cars. Gotta love those inline 6's, and a DOHC, crossflow, all aluminum, high revving, high displacement one DEFINATEly has potential. (and once a turbo goes on...)

Yeah you've got to remember than Evan is a beast, I doubt he'd need a vice at all to bend that sucker in half. You should hear what he did to his thermostat housing!

Owen, I just finished reading "Fiberglass & Composite Materials" by Forbes Aird. Its one of the better composite books I've come across.

Yes, it can be done. At least some gears can be, and I don't know which ones. I remember Norm talking ages ago about his tranny, which used a mixture of gears from various trannies. Maybe he'll chime in here and add his 2 cents.

The three little dots are used often for 'therefore' in mathematics, engineering, physics, etc. Basically the step before you've shown something, and therefore you can derive something else from it.

Generally no. Blow off valve is generally the term used for a valve between the turbine and throttle body, to relieve pressure when shifting. Pop-off valve is generally the term used for an overpressure safety device, most often screwed into the intake manifold.

Heh, I am taking a course in machine dynamics starting tuesday. I could probably be a lot more help AFTER that course. Lets see, symbols... Forgive me if I am stating the obvious to you, I'm not sure where you are at: I'm sure you got theta and phi Kevin, both being angles. dx/dt is the change in x in terms of t. The derivative of x with respect to t is dx/dt, which is also the velocity, providing x is the position. If you take the derivative of the velocity, or the 2nd derivative of the position, you get acceleration. (d^2x/dt^2) The Ohm sign there is confusing. The capital omega (the one we know as the ohm sign, for resistance) is angular velocity. The lower case omega is the curvy w. For some reason they aren't consistant with their usage, I'm not sure why. Alpha is the angular acceleration. This should be all covered in my course in machine dynamics, as I said. Unfortunately I don't know a lot about it yet.

See the announcements section for a fairly up to date analysis. I am moving this Sunday, likely without the car. (until I can get back up here and do a couple more days work)

I think when they say don't shake the can, they mean don't put it in a paint shaker. I usually just wobble around the can a bit before I open. I didn't open the lid on mine either, 2 holes punched in the top of the can. Its a little messy, but at least you know you'll be able to get at it again.

Oops! That one too. Heh.

Thanks guys I got it today. It helped having my dad under there with me, the extra set of hands were useful. Basically I think it comes down to me being too tired to really crank on the suckers before, because this time around it was pretty easy. Well then again, they did soak in WD-40 for a couple days too.