Leon

I was reading up on exhaust stuff, got bored, but felt like doing something semi-productive. This graph shows the relationship between pipe diameters and cross-sectional area, and the differences between a single and dual arrangement in terms of area. Choose a pipe diameter, find it on the graph, and follow the horizontal lines to find an equivalent diameter. The abscissa represents single pipe diameter (even for twice pipes) and the ordinate is total pipe area. For example, it can be seen that choosing 1.75" twice pipes (MSA) is equivalent in area to a roughly 2.5" single pipe. Enjoy...

13257-21000

Daeron is talking actual power, not differences from stock. And BTW, an L24 does not make near 200hp stock! It's closer to about 120-130whp (150bhp). You'd have to put in a considerable effort to get to 200whp. I agree that tackling the (likely poorly maintained) suspension first is the way to go. Do that and then drive it with a stock engine. You don't need 300hp to have fun! When my 240Z was on the road it ran pretty badly, partly because it was a $400 240Z. It very likely had under 100hp, and I had plenty of fun!

Nope, it's back on the presses! How to Hotrod and Race Your Datsun

I got my information from an F1 senior engineer. I guess that doesn't count...

Very good point Roger, and it reminds me of something along the same lines. Compare a Z to a 599 that was mentioned and the weight differences are relatively huge (~2300lb vs. ~3700lb)! The effective mass of the wheels will affect Z-car performance (i.e. time-to-speed) much more than a heavier car, meaning that the effective mass of the wheels is a higher percentage of total mass of the Z vs. Ferrari. Thus, the effect of larger wheels is much less noticed on heavier, more highly powered cars. Conversely, a reduction in weight of a Z's wheels will affect performance more than a reduction of the Ferrari's wheel weight.

http://zhome.com/ 07/1973 - "260Z Production Starts at RLS30 00001"

To the contrary, you want sidewall, just not soft sidewall. This "I have been told" talk is also not proof of anything. I have been told also, except by a former Formula One senior engineer and he doesn't agree with you.

Possibly, but I would not call those sidewalls "very little." Tire compliance is necessary, and you especially do not want a tiny sidewall for a race tire. As Jon mentioned earlier, you gotta put those big brakes somewhere.

Engine Drop No hoist? No problem. Two car garage? No problem. Use some jacks to drop the engine down. Once the engine was down I took it off the jacks and put it on a thick piece of cardboard. I had my brother grab the radiator support and lift the car while I slid the engine past the lower rad mount. It was my first time so it took some time, but I was definitely satisfied. Oh, and don't forget to (completely) drain the block of coolant...

That is not my conclusion, nor is it what I say. You seemed to have misinterpreted my post. Take another look at it...

I completely agree with Daeron. Tire compliance is a big issue when considering predictable handling. The shorter your sidewall, the less compliance you have. Let's take it to the extreme: Look at those tires! Do you see F1 cars running 20" wheels with no sidewall? Now I know that those tires are very different from what we run on the street, but if it was truly beneficial to run relatively big rims and small sidewalls then I think F1 would seek to do that. Besides, for myself at least, even 17" is pushing it on an S30. 14-16" seem to fit pretty darn well, IMO!

Ok, I suppose that my statement is not true in all cases, but given a heavier wheel and maintaining a constant diameter you will want less wheel and more tire. This is all very general and should be looked at on a case-by-case basis as JM points out.

Buy less tire? Do you mean go for larger diameter wheels, or just go to a lower profile tire? Rubber weighs less than metal, so having more metal in the wheel will increase unsprung weight even though the tires are of a lower profile.

I was at a winery this weekend and happened to see some spicy jam! Now, usually I'd grimace from the thought of such a mixture, but I remembered this thread and thought, "why not?" Opened my 10oz jar of Mango-Plum-Ginger jam today, and now it's almost gone (had help from others too)! Good stuff, I like the spicy sensation with some sweetness. This one has jalapenos and Thai peppers, but it isn't very spicy at least to me. I'll have to find a recipe... BTW, the jam came Oregon. You guys are pioneers!

I was surprised at the price, I definitely think there would be a market for these, although not a big one. I wonder how hard it would be to make it street legal, if you really wanted to...

Just came across this! I had no idea anyone was producing these. Looks pretty legitimate. I wonder if the GRP can withstand the stresses, how well its reinforced, and the design of the tube frame ...

Here's his site: ZSpecialties

Straight pipes into megaphones. *Not my car. I believe that's Ron Carter's replica, correct me if I'm wrong.

If the engine is in good condition just do a compression test. That should tell you whether the pistons in there are flat or dished tops. I don't want to give a wrong number from memory, but you can search and look up compression values for different compression ratios.

GLORIOUS! Unfortunately, I didn't get any good video of it...

I was lucky enough to see his car go around Laguna a few years back.

I'm assuming you're talking about the negative camber on the ZX. It's a function of suspension geometry, so as the car is lowered it gains camber. A higher (negative) camber angle tends to produce more lateral force, however that trend is also tire dependent.

Errr, that is a fuel injected ITB setup. Those are not carbs, FYI.

Race Car Vehicle Dynamics by Milliken & Milliken is very good. Also take a look at: Tires, Suspension and Handling by Dixon Aerodynamics of Road Vehicles by Hucho Great thread! I need to find the time to sit down and read it all the way through some time.