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Turned on the link and the pictures are very impressive.
The info is over a yr old and nothing to show the 2008 results or anything for 2009 so far.
Did the engine blow up?
Have not heard anything before this forum.
I do know quite a bit about Turbos as I built a custom unit for the 1/4 mile back in 1984 and today have a custom unit on my street car. My experience is limited but not on the scale that you are working on today with those large 88mm Turbo units.
I go on the theory similiar to Porsche 911's Turbos.
I try to envision as much boost as possible on a small engine with a small Turbo setup to get positive low ET in the 1/4 mile and top speed the same time.
I am not into BRUTE force via a large turbo setup and a car with a lot of weight. That is why cars are gutted to cut down the weight.
Still commend your applications and would like to hear any good news that is not over a yr old.
There are many smart people with more Turbo knowledge then us who may have tried and did not have any good luck with a similiar setup that is not openly discussed.
I kinda look at Porsche and go with the flo. Steve
Wait...with "turbo lag", why would you use a turbocharged engine for drag racing? Wouldn't a supercharger give better results?
Help me here guys...I'm thinkin' old school...
I never had a supercharger and from what I understand is a pressure BLOW system whereas the TURBO has a "LAG" from a "DRAW" system.
You can have a "BLOW" system into the engine thru the Carb which will eliminate the "LAG".
This will give a positive smooth procession to Boost at a certain RPM depending on the initial setup.
On a draw Turbo setup into the Carb (which I have on my street car) I have eliminated the "LAG" via the right idle RPM and proper setting of the timing ATDC. Each engine configuration is taken into consideration when doing the adjusting. Each engine will be different.
I never did a FI application so cannot speak about that with any knowledge. I'm a Carb man.
Like I said in a previous post on another thread "what you do with the turbo determines at what RPM the boost comes on".
My original setup had the boost come on at 3600 RPM and my modifying changed that to 2800 RPM.
My engine setup has gone up to 15lbs of boost when I back off on the gas pedal.
Thats all I can say for now without giving my R&D away. Steve
I would like to add that there is such a thing as having too small of a carb on a engine.
A larger Carb can be jetted down by controlling the Air and Fuel ratios with the AIR intake being critical. (engines have to breathe)
Similiar application is true with TURBOS. Bigger is NOT always better with some engines.
The Turbo exhaust impeller turns on a common shaft with the intake impeller "DRAWING" and "FORCING" the air/fuel mixture down the intake manifold into the combustion cyls and you will get the BOOST.
It has been found that two small TURBOS are better then ONE large TURBO. Ask Porsche.
Wait...with "turbo lag", why would you use a turbocharged engine for drag racing? Wouldn't a supercharger give better results?
Help me here guys...I'm thinkin' old school...
Steve,
From what I can read, the owner of that Camaro did not want to campaign two cars. He has an identical car with a single turbo. Also it sounds like he has teamed up with the owner of this car. His single turbo car (114mm) has gone 6:85@ 218mph.
Now these cars have to weigh #3150 with driver and can only use a 10.5w slick (which is really closer to 11.5" wide) , and I think most of the FI systems they use are Big Stuff3, & FAST. With all the computer systems on board they actually have a way to come off the line with boost, so there is no lag. I've seen one car with close to 3000hp , go straight as an arrow down the drag strip. They basically make more HP and just tune it down for track conditions. The computer senses wheel spin and adjusts timing and boost as it goes down the track.
Now I'm sure it's WAY more complicated than I just explained but this is what I've learned from some close friends that are running a car. They are currently switching over from a Nitrioused SBF 347ci (best pass 8:15@171mph) to a 101mm turbo with another 347ci SBF.
The turbo craze in drag racing is just amazing. The HP created and the ability to put it do the track is just unbelievable.
I think this is the current record holder.. 6:49@224mph ! The cars are going over 160 in the 1/8th mile .. just crazy.
Steve,
I didn't mean to imply this was my project. I'm just a spectator. I was only showing those links to provide an idea of how far turboes have advanced.
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