PalmettoZ

Hey- When you installed the cam did you keep the chain tensioner compressed over to the side ? If not it could have popped out and that might be a source of noise. Also did your timing marks line up correctly at TDC at the top with the cam sprocket ?

That thing is a piece of work, I didn't know that counter rotating props even extisted on an airplane, unbelievable. Look at the pitch angle on the props as well, serious angle on it. It almosts looks like it is in a feathered position, but I don't think you can have variable props combined with counter rotation like that. I wonder if the front engine has a hollow crankshaft on it ? Take those floats off and I bet it would really scoot. I have always wanted to go to one of those pylon races and watch those guys run, I love the sound of those big V-12s.

This plane was bad ass back in the day... It was the first aircraft model produced by the Hughes Aircraft company. Many groundbreaking technologies were developed during the construction process, including individually machined flush rivets that left the aluminium skin of the aircraft completely smooth. Also it had retractable landing gear to further increase the speed of the plane. It was fitted with a Pratt & Whitney R-1535 twin-row 14-cylinder radial engine of 25.2 liters, putting out over 1,000 horsepower (750 kW). The H-1 first flew in 1935 and promptly broke the world land-plane speed record with Hughes at the controls, clocking 352 mph (566 km/h) averaged over 4 timed passes.

OH. Doohhh...

Hey Derek- Tony is right, the pintle cap forms part of the spray pattern.

Hey Grim- This will really blow your mind. Just to show you the potential of what the Diesel is now able to do. http://autospeed.com/cms/A_2823/article.html

Check this out: http://jalopnik.com/347346/2010-45l-duramax-diesel-has-shockingly-brilliant-design

Hey Grim- Compression is very high, I think around 22:1 or so, Diesels love turbos. But of course you can overdue it as with anything. But in general the rods and crank are much larger and heavier for strength. Diesel fuel (basically kerosene) has totally different burn compared though compared to benzine. Although the new Diesel fuel has the sulfer removed from it for emission purposes. GM is actually working on a new modular Diesel that has unbelivable technology in it coming out in a few years or so. I will try to find the link again and post it, great reading.

Hey- Actually all diesels are direct injection, only air is going into the intake manifold and thru the valve.

Hey- Diesels are designed primarily for torque at low RPM's, not high end horsepower. Especially diesel truck engines. There are diesels out there that turn higher revs, but in the states you would be limited to getting one. Diesels are very long stroke engines, with low end torque as the goal of the engine design. Mercedes has current diesel engines with 4 valves per cylinder and CRI (common rail injection) which is basically electronic fuel injection for diesels that turn upwards of 5000 rpm I think. Very quiet and smooth as well since they are designed for a car, not a truck. If you get one of these engines from a junkyard you would need the ECU and wiring harness as well. They won't be cheap. As far as truck engines go, Dura-max and Cummins Turbo diesels are in the junk yard as well, and late model types are also CRI type motors. You would need the transmissions as well to go with them. There are lots of tuning bits out there for these motors as well to get more power out of them too. Basically if you want more power out of a diesel you don't need to turn it higher, just install a bigger turbo and re-calibrated ECU to go with it ( Banks engineering has kits ).

Hey Derek- Your project is looking awesome, really nice machine work and design. I think that the injector is going to be spraying on to your bar stock though. It is way too close and you would loose some atomization. It will work like that but it would be alot more effecient if you did not have all of that stock around the pintle. Scott Holcombe

This is from a website for lightening Datsun 510 flywheels. I think they are the same. Tony D can you confirm ?

Hey John- I flew as a flight engineer on the 747 and 727 for 9 years or so, and I promise you that every pilot in commercial aviation knows that scene from the movie word for word. It's like the standard runnning joke in the cockpit to recite it. Scott

Hey Grim- The "V" shape wings you are talking about I think are what is called swept wing design for aircraft. These are simply a much faster aircraft wing than a straight wing. Swept wings have less lift than straight wings and higher stall speeds, this is why jet aircraft take off and land at much higher speeds than prop driven straight wing aircraft. This has nothing to do with the aircrafts turning ability though as you stated. The end plates on the wings you are talking about are called winglets on an airplane and are only there to reduce drag created by vortices off of the wing tip. Again these are common to swept wing planes.

Hey Derek- For synchronizing why don't you just use the lines that go into the log. You could put an accurate vacum gage on each line one at a time. It appears that your connectors on the log are Pneumatic quick release type with a air throttle on the top ( they look like the ones from production lines that I have seen ) which you can adust the airflow with. Is that what they are ? It would be very easy to match runners that way.

Does anyone know what the small plate with additional welded 2" x 4" pcs welded to it is underneath the differential on my '75 280 Z ? I don't even know what to call it. It appears to be some kind of balance weight or something that was fabricated as an afterthought. Weighs like a good 5 lbs or so. I have seen this on photos of other Z's so it appears to have come from the factory with it.

Here you go-

Found this the other day on the internet. Seems like this idea is getting kicked around with other engines as well. http://www.highperformancepontiac.com/features/hppp_0606_pontiac_sprint_six_engine_build/photo_01.html

Don't change the muffler, it sounds awesome the way it is. Really good work on your car too. Looking good-

Hoy Jack- Looks great, you are doing some really good work there. Is your goal to make all of the body panels ?

Yea, that's the thread that I just found. He did a nice job on his.

I have been searching for over an hour now, and found one thread that discusses this just now. It is for a bolt in support bar for racing or rally cars that used to be available ? Has anyone ever seen one of these pieces or know where to get one ? Thanks

I have the panels off on the interior of my car that normally go right behing the seats on the side of the car. These are the ones that are basically between the door latch and the wheel well hump. I have noticed that there are 4 holes in a rectangle pattern (about 4" x 2") on both sides of the car that have threaded nuts behind them that are about 8 or 10mm pitch. I also have threaded holes in the channel piece on the roof (the one that contains the overhead light going side to side). There never was anything in them when I bought the car, and I don't know what they could be used for. Does anyone have any knowledge on what these might be? It almost looks like you could mount some kind of internal bracing from the factory. Thanks-

Hey- The one that is for sale on Ebay (datsun 280z search) is a great deal. I got one from him in the summer and am very happy. It sells for around 200 and fit perfectly. I would recommend it.

Hey- Are you selling these ? If not, can you tell me the source so I can get one ? Thanks-