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New Edge Cobras
Driving at high RPMs - Question
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<blockquote data-quote="oz98snake" data-source="post: 2360811" data-attributes="member: 14568"><p>LOL at this thread - Paul, if you get a buzz from it, go ahead and cruise at 4000 rpm - I can tell that it is a WHOLE lot kinder on your engine to do this than it is to drag race the thing a few times a month as there is very little load on the engine when cruising!</p><p>Even stop start city driving would be harder on your motor than cruising down the freeway at 4500 rpm - and there are plenty of Cobras that commute in traffic every day. </p><p></p><p>As for open tracking or racing the mod motor - it has picked up a very undeserved reputation. The reality is that there is nothing fundamentally wrong with our engines - a stock normally aspirated 4V will run all day every day on most race tracks with no problems. They do need a little work if you up the power and stick it in a race car, but what engine doesn't to take it racing! The 5.0 Cammer crate engine is essentially the same damn block and heads, and it works just fine hour after hour in Grand Am cup race cars, and the DOHC mod motor has been used in other forms of racing like ALMS protoype for years with no problems.</p><p></p><p>The "oiling" issues you read about are related to the stock oil return passages having a bottleneck which can cause the oil to build up up top, and of course get low in the pan, possibly causing starvation problems in long high G turns - there is a very easy and well documented fix for this when building up a race motor. There have also been a few cases of the stock oil pump drive gear failing, but again, there are alternatives available that you would want to put in a built motor. The only other significant problem with the mod motor is that the stock cooling system was less than ideal as it allowed the rear cylinders to get too hot in a racing situation - again, there is a well documented fix for this. </p><p></p><p>My old 98 open tracker is more or less stock except for intake and exhaust and has never been apart - and it has had the living daylights flogged out of it on the track for years as well as street miles - and it has never missed a beat - it runs as quiet as a new one after 60K miles. I just did some quick math, and figured out that my engine has run at least 90 hours flat out on the track over the last 3 years - that's nearly 3 Le Mans 24hr races! Scary when I think about it that way, but it is still as strong as ever!</p></blockquote><p></p>
[QUOTE="oz98snake, post: 2360811, member: 14568"] LOL at this thread - Paul, if you get a buzz from it, go ahead and cruise at 4000 rpm - I can tell that it is a WHOLE lot kinder on your engine to do this than it is to drag race the thing a few times a month as there is very little load on the engine when cruising! Even stop start city driving would be harder on your motor than cruising down the freeway at 4500 rpm - and there are plenty of Cobras that commute in traffic every day. As for open tracking or racing the mod motor - it has picked up a very undeserved reputation. The reality is that there is nothing fundamentally wrong with our engines - a stock normally aspirated 4V will run all day every day on most race tracks with no problems. They do need a little work if you up the power and stick it in a race car, but what engine doesn't to take it racing! The 5.0 Cammer crate engine is essentially the same damn block and heads, and it works just fine hour after hour in Grand Am cup race cars, and the DOHC mod motor has been used in other forms of racing like ALMS protoype for years with no problems. The "oiling" issues you read about are related to the stock oil return passages having a bottleneck which can cause the oil to build up up top, and of course get low in the pan, possibly causing starvation problems in long high G turns - there is a very easy and well documented fix for this when building up a race motor. There have also been a few cases of the stock oil pump drive gear failing, but again, there are alternatives available that you would want to put in a built motor. The only other significant problem with the mod motor is that the stock cooling system was less than ideal as it allowed the rear cylinders to get too hot in a racing situation - again, there is a well documented fix for this. My old 98 open tracker is more or less stock except for intake and exhaust and has never been apart - and it has had the living daylights flogged out of it on the track for years as well as street miles - and it has never missed a beat - it runs as quiet as a new one after 60K miles. I just did some quick math, and figured out that my engine has run at least 90 hours flat out on the track over the last 3 years - that's nearly 3 Le Mans 24hr races! Scary when I think about it that way, but it is still as strong as ever! [/QUOTE]
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