2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Safe Rpm???

Old Aug 9, 2006 | 02:08 AM
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Safe Rpm???

How far can U rev these thigns to safely? We just set Ppaz's 2.4 auto to 7000rpm shift and 7200rpm redline and all is gravy baby so far.

Dan
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Old Aug 9, 2006 | 02:10 AM
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Originally Posted by djt81185
How far can U rev these thigns to safely? We just set Ppaz's 2.4 auto to 7000rpm shift and 7200rpm redline and all is gravy baby so far.

Dan
well, the safe redline for the ss/sc is 7k, so as long as your car isnt shifting past that mark, you should be peachy
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Old Aug 9, 2006 | 05:31 AM
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7200 is fine. Mine's set at 7k and i wouldn't mind bumping it up to 7200
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Old Aug 9, 2006 | 05:32 AM
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I wish I made power til 7K
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Old Aug 9, 2006 | 05:43 AM
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The thing is if you check my dyno in my gallery it pulls all the way to redline. 7200 is def the way to go.
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Old Aug 9, 2006 | 07:21 AM
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ill have to up the shift points tonight...were runnign/tuning it at the track tonight as well w00t
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Old Aug 10, 2006 | 08:27 AM
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im not sure higher shift points will make better times because you've only making like 20 (with an auto even less) between 6300 and 7k+.... i'd dyno his ****, find the powerband and adjust to that.... even with a 5spd i rarely go above 6500 without juice...

Im very interested in knowing what else was changed other then rpm limiter and auto shift points? maf? close loop settings?
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Old Aug 10, 2006 | 08:24 PM
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Typically with VVT motors, you try and rev too high and they fall right on their face cause it can't support the RPM. I say stay with your stock RPM band...if you really have to or want to, turn it up max of 500 RPMs.
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Old Aug 10, 2006 | 08:43 PM
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westers set my redline to 7000 no problems here.
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Old Aug 12, 2006 | 12:23 PM
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So far so good... I think when we dyno we'll have a better idea of where it's making power.
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Old Aug 18, 2006 | 11:18 AM
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Originally Posted by PpAzZ1101
So far so good... I think when we dyno we'll have a better idea of where it's making power.

At the dynos I went to the 2.4 VVT is still making power even at 7000, mine and Celicacobalt and WSFraziers. Therefore my advice was to Dan and you was take the limit 500 rpm over the stock 6750. Could go higher, but I wouldn't on the stock valve springs (industry rule of thumb).

We also need to reconfigure the 3 tranny maps. See where your L and I and different form D.!
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Old Aug 20, 2006 | 11:34 PM
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yeah on my dyno sheet there is no drop off in power in my auto
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Old Aug 21, 2006 | 12:42 AM
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its not a question of if it will make 2 extra hp at 7000+, its a question of if that 2 hp makes any sense to shoot for when you shift... if you wind it out to 8000 i bet it will still make more power... its more of a ratio of power-to-rpm-to-time, if your spending extra time making so little power your not making great times.

if you did a 1/4 run with your shift points set somewhere around 6300-6500 vs. 7200, i'm willing to bet you'll see better times.

You want to set your shift points so that when your rpms drop, your dropped back down into the area that makes the most power. wash and repeat. to know these rpms you need a dyno of each gear.

people are far to set on raising thier rpm limiters because thats what everyone else does... its not what my car needs to get better times.
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Old Aug 21, 2006 | 12:53 AM
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Originally Posted by bigworm
its not a question of if it will make 2 extra hp at 7000+, its a question of if that 2 hp makes any sense to shoot for when you shift... if you wind it out to 8000 i bet it will still make more power... its more of a ratio of power-to-rpm-to-time, if your spending extra time making so little power your not making great times.

if you did a 1/4 run with your shift points set somewhere around 6300-6500 vs. 7200, i'm willing to bet you'll see better times.

You want to set your shift points so that when your rpms drop, your dropped back down into the area that makes the most power. wash and repeat. to know these rpms you need a dyno of each gear.

people are far to set on raising thier rpm limiters because thats what everyone else does... its not what my car needs to get better times.
Wrong. The higher shift point helps.
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Old Aug 21, 2006 | 09:04 AM
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Originally Posted by PpAzZ1101
Wrong. The higher shift point helps.
In this case it does. It makes no sense to shift early when you're making more hp in your current gear than the one you are going to shift to. The 2.4 can make more hp holding the gear until 7000rpm than it does when you shift to the next gear.

The same could not be said for all other engines.
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Old Aug 21, 2006 | 10:19 AM
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Originally Posted by 06G5GT
In this case it does. It makes no sense to shift early when you're making more hp in your current gear than the one you are going to shift to. The 2.4 can make more hp holding the gear until 7000rpm than it does when you shift to the next gear.

The same could not be said for all other engines.
Exactly... according to the dyno. I think the "other engines" clause is kind of common sense. Every engine is different.
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