PINTO CAR CLUB of AMERICA
Welcome to FordPinto.com, The home of the PCCA => General Help- Ask the Experts... => Topic started by: americanpintobean on March 21, 2012, 11:49:36 AM
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what is stock 2.0L redline?
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Not to be sarcastic but why do you need to know? The stock US spec 2.0L make no power past 5500rpm. :P
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I believe 5500 is being optimistic at that.
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Sounds about right. I know brownie can rev pretty darn high. I have never had it up to 5500 (by ear), but it has never lost power! :D
Thinking about it, Brownie has a 2.0L and a speedo that goes up to 110mph, while my 78 has a a 2.3l and a speedo that goes up to 85mph, naturally I would suspect it can rev higher. Both motors are stock, aside from the 2.3 being bored out to .030 over and a roller cam, but I leave the red line on the tach at 4k RPM, as it's just SCREAMING at 3500.
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pintosopher; I needed to know for hornet racing. 5500 might be the end of power, but what is the redline? the point at which the motor goes out of time on the high revs. obviously before you float the valves.
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Let us know what the rules are. Back in the late -'70's when I started dirt track racing the engines had to be stock. But that didn't mean you couldn't tune for maximum performance. Open air cleaner, no choke plate, some carb work, drill the jets, cut the head .060", made shims for the stock cam pulley to get the cam timing right, (CRITICAL STEP) good valve springs, turned it 7000 RPM. Had to have a muffler so I took the guts out of a glass pack and used the shell (lol) with 21/4" pipe, thing sounded like a pissed-off bumble bee!
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Let us know what the rules are. Back in the late -'70's when I started dirt track racing the engines had to be stock. But that didn't mean you couldn't tune for maximum performance. Open air cleaner, no choke plate, some carb work, drill the jets, cut the head .060", made shims for the stock cam pulley to get the cam timing right, (CRITICAL STEP) good valve springs, turned it 7000 RPM. Had to have a muffler so I took the guts out of a glass pack and used the shell (lol) with 21/4" pipe, thing sounded like a pissed-off bumble bee!
AmericanBean, and all..
Let us suppose that there is a peak power and torque curve for a "stock " engine. The Redline term is a nebulous one. Does it occur after the power peak? Does it occur before valve float? Do the rod bolts breaking from harmonic stress indicate a Redline #. The point is Unmodified ( even Bluprinted ) stock motors don't have a specific Redline. It's a defensive data point to defer destruction .. It's not a set RPM. Engine builders look for this all the time in their quest for power, And reliability.
My 2 cents..
Pintosopher
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A stock 2.0L will turn 6,000rpm's all day long, the bore/Stroke and rod ratio make it a very forgiving little engine, the power cure will be below that point, the stock 2.0 cam is pretty aggressive for a stock engine.
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A stock 2.0L will turn 6,000rpm's all day long, the bore/Stroke and rod ratio make it a very forgiving little engine, the power cure will be below that point, the stock 2.0 cam is pretty aggressive for a stock engine.
My Stock 2.0 was just a wailing engine with little power past 5 grand, I had header too. Then I put on a modded stock intake man with Weber 38 DGAS and whoa! This thing needs fuel! and then it decided to blow a head gasket.. Hmm !
Went to race motor then..
Pintosopher
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7000+ is not a problem at all strength wise. Mine had a cam/header and milled head...did fine up there.
JIM
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mines a 2.3 but the sound of it at 7200 through a 3" exhaust with a bullit muffler is awesome.......