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PostPosted: Tue Nov 28, 2006 12:33 am 
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abby normal
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Camshaft timing has no effect on engine speed, it only affects the torque curve output of the engine.
Your cruise rpm will be the same, but it will run better doing it. :)

You can get more info on the cam advance pully's in the review section: :wink:

http://www.teamswift.net/viewtopic.php?t=8275


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PostPosted: Tue Nov 28, 2006 7:26 am 
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That's not the question, he's asking what would be the best camshaft timing to run at that speed. I think Superf1y would be the best one to answer this as he's run world record high speed runs. A 3 cylinder automatic running 80 mph is insanely fast for anything more than a passing situation.

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PostPosted: Tue Nov 28, 2006 9:38 am 
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abby normal
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Woodie wrote:
That's not the question, he's asking what would be the best camshaft timing to run at that speed. I think Superf1y would be the best one to answer this as he's run world record high speed runs. A 3 cylinder automatic running 80 mph is insanely fast for anything more than a passing situation.


I'm not 100 % sure what the question was...Just made the reply and referred him to the product reviews.

Where there is a review for a 3 cyl auto using a 10 deg. pully. :)

http://www.teamswift.net/viewtopic.php?t=8275


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PostPosted: Tue Nov 28, 2006 9:47 am 
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Cam timing can increase power, and torque in some cases. For example, it has been reported that a +2 and +4 advance to the GTi cams produce some gains in torque and power. I guess this is because factory timing is not perfect.

So, yes, one of those sprockets might help you. Ask Suprf1y as he is our "cam guy". I'm sure he will step in as soon as he reads this post.

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PostPosted: Tue Nov 28, 2006 3:25 pm 
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The question is...

Quote:
would retarding the camshaft help the car in that range?

Its the one with the question mark. That was the tip off for me :wink:
The answer?
No.
The 3cyl. cams are already further retarded than they should be for just about any application that I can think of.
You will be revving pretty good with an auto, at those speeds, but retrding it further will just cost you power. Advancing it will enhance lower RPM power , and torque, dramatically, with little, or no noticeable loss in the upper RPM range.
Customers please jump in if your experiences differ from this.
Rarely does retarding a cam offer much, if any benefit for performance. I know the theory, but its just that, theory. In real world applications, its almost never beneficial to go above 110 degrees intake centerline, and ussually best to in, and around 106.
The stock metro is 114
Most stuff is pretty close to 110, with some small displacement stuff (small 4cyls.) around 106
Porsche seems to like to be around 96

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