JustinOlson

What a Goober. Corvettes are awesome cars and are very comparable in performance to some ferraris, but who rebadges a corvette with ferrari badges?

Anyone have experience with a track car and Arizona Z car suspension pieces. They "look" nice, but I'm wondering if all of their features really add up to a solid handling S30.

Anyone have experience with a track car and Arizona Z car suspension pieces. They "look" nice, but I'm wondering if all of their features really add up to a solid handling S30.

Its just a numbe I've been have heard alot by some big honda guys that aren't bullshiters. Justin

They make great power and if the divided manifold is setup correctly, the turbo will spool 1000 rpms sooner vs a non divided manifold setup. The highest powered stock block honda D16 is running one of these GT3071R divided turbos. Has some boost creep on the topend by the looks of it to me.

I've just heard they take the unmachined versions straight from garret and machine them for the gt30+ turbine wheels.

The housing above is actually just a machined GT32 turbine housing fitted to a gt3071r. Here is a picture and link to garretts info on the gt32: http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT32/GT3267_452234_2.htm

The turbo I'm looking at running is the 3071R with a .78 a/r divided turbine housing:

Started working with stainless steel 1.5" schedule 40 piping for turbo manifolds. Here is a test piece I was working on tonight. Regards, Justin

Has anyone tried one of these turbos on a l28? I'd be very interested in seeing how they respond. Regards, Justin

yes, 1.4 60ft times for sure. http://www.jnjdragracing.com/ourcar.htm

KISS, R200 will handle it.

Very nice. Good job, What does your company do? Regards, Justin

Do you have a chart of the dyno run? What are the specs on the 60-1 you are running? Great work. Makes me want to play around with my 28 instead of swaping it out. Justin

Butt weld: Front Side Front Side Back Side Penetration Back Side Penetration BTW, this past weekend I ran hood to coast and had a great time doing it. My best leg I averaged 5.58/mile for 5.4miles. Good times:

Here is the reply back from niles. I posted what you posted back to him: " So we agree on that one. We also agree here! I didn't say the cage should be your primary energy absorbing structure, I hope nobody misinterpreted that from my post. I merely indicated that in a serious accident a cage will deform a little bit with the body. The specifications for tubing sizes laid out by the sanctioning bodies are to make sure that the structure is up to the task of protecting the occupants. The heat treatments that take chromoly's strength up so high make it brittle. Nobody wants a cage that breaks. If the ultimate cage was the one with the highest stiffness, we'd all have high carbon tool steel cages. Percentages are relative terms. To say something deforms 600% is meaningless. The mild steel I used as an example will deform more before it breaks than the chromoly steel in the example. That doesn't mean you want either to deform. It means that when they develop the requirements for a cage to pass tech, they make sure that the thickness of the steel they specify is such that the cage can serve its purpose: protecting occupants and redirecting loads without breaking. You seem upset. Can I reccomend a good beer? Really the only purpose of my earlier post was to say that there's more to the picture than just "which has a higher tensile strength." The specs for the rules are determined so the cage is strong enough, regardless of what you build it from."

Just found this Vehicle Dynamics PDF that is used to teach an engineering class. Very interesting IMO.

Any recommendation on good places to start reading on tube frame design and space frame design. I'm going to start modeling a tube frame chassis in solid works and wanted to have some reading to help guide me on my initial design. Regards, Justin

After reading a bit more about the safety of mild steel relative to chromoly, I'm beginning to believe its not worth saving 25lbs to go to 4130 for the main cage. So at this point 1.625" X .125" 1020 DOM seems like the road to take. Easier to weld, cheaper, safer, more interior room. Good enough for me. "Remember that cages mean to prevent intrusion. When your brain hits your skull in a 45g collision it won't matter that your cage was super rigid, you'll just be a well preserved corpse with jelly for internal organs. Energy absorbtion is the name of the game.While AISI 4130 steel typically has a higher tensile strength that is only a part of the picture. All steels have a very similar stiffness (modulus of elasticity) and Mild steel (AISI 1020 for this example) will deform 600% more before fracture than Chromoly. (My reference is the ASM International Metals Handbook H.E. Boyer, T.L Gall) What you should discuss is energy absorbtion. A stiff but brittle metal will not absorb as much energy before fracturing as a similarly stiff but more ductile one. The differences in specifications laid out by NHRA, SCCA, NASA, etc reflect the difference in materials properties in an attempt to place them on a relatively level playing field with respect to energy absorbtion. THAT is a fact which reflects a larger picture." -Niles

Go with 74 and older. The 75+ and new cars have to go through smog. Eventually your going to have to register it in oregon if you live here, and you will have to take it through emissions to have it registered. The one way around this is that south of I think woodburn they dont do DEQ testing at this point. I'm registering one of my cars at my mothers house in corvallis where you dont have to go through DEQ. Regards, Justin

Electromotive isn't that great. There are much better systems in that price range. Megasquirt 2 is getting pretty damn advanced at this point and has some very big developments in the pipeline that aren't too far off. I'm going to run it in my 280z. Go read around http://www.msefi.com for more information. Regards, Justin

Austin, so whats next for you car? Whats on your to do list?

How is the glare with that coating? Could you weigh the dash like that before putting it back in? Regards, Justin

Fuel mileage really isn't effectled as much as you'd think. You can run it fairly lean at low load with lots of timing and get very close to the same mileage you get with gasoline. The key to making it work is the fuel system and programable engine management. Justin

IT is a great fuel! My friend with an audi 5cylinder is running 33psi on it. He likes it much better then 104 octane race gas. His EGTs actually decrease once he gets into boost. http://www.mswanson.com/~jgreen/car_home.html