johnc

Double stick velcro tape.

Nissan Competition recommends 45 ft. lb. breakaway for a road race setup and 70 ft. lb. for an autocross setup. I would go witht eh 45 ft. lb. setting for a street car.

Both Jon and another person have said that some 280Z halfshafts are shorter then the 240/260Z halfshafts. Does anyone know this for sure and what are the measurements? Regarding the 280Z chassis width, again its not something I've measured but the person who told me should know his stuff.

Hopefully I'm at both events this year.

Maybe a vacume can or a pump like the street rodders run?

Thread's locked. Mudge and Afshin, you guys go play somewhere else.

The Mercedes head rumor has been around since the 1980s. If it was true it would have been exploited by hundreds of people since then. Then there's the N36 intake manifold rumor...

Unless you can find some type of rust protectant that specifically says you can weld over it, do all of you rust protection after welding. You don't want any paint, sealer, etc. in the weld.

Best place is right under the passenger seat. Next best is right behind the passenger seat.

Yeah, you're right. That's what I had written down but its not what I typed. Yes, the driver's side spring rate increases and some exponential rate. A lot depends on what spring rates you're running and the type of diff you're running. The problem would be less pronounced with an open diff and/or high spring rates (over 250). I haven't seen that but I've only measured one set of 280Z halfshafts that came out of a R180 equipped car.

Explained: http://www.betamotorsports.com/benchracing/index.html and click on the "R200 Handling Issue" link.

You guys need to be careful solidly mounting an intercooler or radiator to the front of a Z. The core support of a 240, 260, and 280Z flexes, sometimes a whole bunch. At least isolate the parts with rubber mountings.

No. The L6 two valve head can be made to flow very well, with numbers comparable to 4 valve heads of similar combustion chamber size. The limiting factor is what people are willing to pay to hit those flow numbers. Remember, typical GT2 2.8L engines are making over 340hp on carbs so their hp/liter numbers are over 120. If SCCA didn't penalize FI so much (10% in weight) we would see even higher "typical" numbers.

Isn't that baseball?

I'll be doing something on the front within the next month. Air dam with a 5" splitter and an undertray back to the front crossmember. Just have to finish up some customer work and then I'll be able to get to it on my car.

There's no doubt a well designed double a-arm suspension will have better geometry then a strut based suspension. I don't really think there needs to be a discussion.

There are many, many L24 powered 240Zs that hold lap records around the country. Few L28 and fewer V8 powered Zs can match 'em.

100hp per liter normally aspirated in the L6 is certainlay attainable. A lot of the GT2 2.8L race engines made 120 hp per liter way back in the 1980s. You might even be able to hit that number on unleaded pump gas if you run a sophisticated engine management system and do some head work focused on detonation prevention. But, as has been said, you'll pay a lot of money to achieve this abstract number. Expect to pay tens of thousand of dollars including the EMS and ancillary components. For a street car a turbo is an easier and cheaper way to make power.

Do a search. This topic has been covered a lot on this site and the jury is still out on whether a roll cage in a street car is safe. IMHO its not because of the chances of hitting an un-helmeted head against the cage.

I just bent up some .063" aluminum trays. Intercoolers and radiators don't like any kind of solid mounting.

I think I just mounted that exact intercooler opn the front of Amir's 240Z. I'll throw some pictures up on my web site and post a link here later. The images are at: http://www.betamotorsports.com/benchracing/miscimages.html Warning: this page has a bunch of images I just dumped from my digital camera so the image sizes are big (300K). This will be a painful page to load if you're on dial-up.

You'll be welcomed here. May I suggest you look around for a nice late 1970s Datsun 810? The GN engine and drivetrain should fit in just fine and you'll end up with a nice, 4 door GT machine. Something like that is what I'm thinking of doing with my 810...

Just trying to get you to think. I worked for a towing company way back in the early 1980s and one of our guys did just what you did with a silver anniversary Corvette that the police impounded. He crashed into a house on Fullerton Road, injuring himself and his girlfriend who was riding shotgun. After he got out of the hospital he served 5 years at Chino Men's Prison for GTA and the owner of the towing yard had his license pulled by the state. I was standing there when the owner told the guy to, "Take it for a spin and see how you like it." Unfortunately I had to testify in court and watch a friend go to prison.

I sometimes have problems with my Speedglas 9000Xi when welding at very low TIG amperages (under 30) on stainless. It tends to flip back to non-darkened, but that's still a shade 5 and you eyes are well protected at that low of a welding level. Most auto darkening helmets are at least shade 3 when not darkened and that provides protection for that instant before the lens darkens.

No, they won't be trashed. I'll be running interference for them with the local boys and I want to trade rides for a couple runs.