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#1 |
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Who runs a competetive 4-cylinder Comp car, and what engine are they running?
Al Ackerman (engine ?) Frank Aragona Jr. (engine ?) Greco? |
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#2 |
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I'm a 4-cyl comp wannabe racer, so I go to the staging lanes when comp lines up when I'm not in my own race.
The Aragona cars have had a Mopar DOHC four recently, which I think is the same as a Mitsubishi. They also made a Subaru engine work very well. Ackerman had a splayed-valve Chevy head on what I believe is a Pontiac Super Duty block Charlie Greco's Opel that was driven by Dave Yediny had a combo similar to Ackerman's, but his Cobalt has a custom made block, also with a splayed-valve head.
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Tony Curcio 1860 STK |
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I believe the DOHC motors can be competitive at around 135 cubes. If you can get a car light enough.
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Art Leong 2095 SS |
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Art, you may be right about their current combo. When the altered was first brought out,(maybe 2008 or 2009?), the engine had "MOPAR" on the big valve cover. I asked Frank Jr. what kind of engine it was as he strapping in, and he looked at me like I was stupid, and said "Mopar". I had clearly picked a bad time to be asking dumb questions.
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Tony Curcio 1860 STK |
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Same number of cylinders after that there is nothing in common.
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Art Leong 2095 SS |
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I understand now. In fact, the engine I was thinking of has 4 valves, which wouldn't be legal in the altered class they run.
So what year & model would this pushrod engine be from?
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Tony Curcio 1860 STK |
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#7 |
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Tony, It's basically half a Hemi. It was an engine that was used in the Indy Light series.
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Dave Ley |
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Aragona utilizes a Mopar A-4 cylinder block along with the new style Pro Stock Hemi head---if you are thinking about a 4 cylinder be fore-warned you will end up making/fabricating many of your parts and you have to either be a machinist have friend that will work for free or have access to a machine shop to do that---good luck "come in the waters fine"
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The first 2 years I ran my car I used an intake manifold from a dodge caravan. And cams that would check legal in a stocker. Camshafts were almost not available for a N/A engine (nobody had cores) My exhaust cam is a stock cam that has been welded to increase lift, Things as simple as a 2 step were a challange. I had a trans brake made one of 2 in the world. My final drive (rear end gearing to you RWD guys) ratio is 3.94, and thats with custom made gears. But little by little I'm getting it sorted out. I have had some help from the soft index. But with the amount of one-of's I need I deserve it.
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Art Leong 2095 SS |
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You can run a four valve, four cylinder in H/EA-we have one in my car-Al Ackerman built it using a block and head out of the Colorado pick-up-it is a 2.9 liter motor (177 cubic inches) in stock form-we race it at 170 cubic inches. For H/EA, the motor must use carbs and the weight break is 8.25 lb.cubic inch. Fuel injection can be used in L/A or L/AA and the weight break is 10 lb/cubic inch (2 valve) or 10.5 lb/cubic inch (4 valve)..
Professor Dave |
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