Anyone else think the highend is a little weak?
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From: Toh-rensa,Ahteesia,Ahcadia,Montree Pak, Longa Beacha
In stock form the top end IS weak. What I mean by top end is RPM above 5K, not necessarily a 100+ MPH speed. I found that making the intake side of the engine less restrictive seems to help the top end quite a bit.
With the first dyno of my car, the engine is strong up to 5K, but from 5K RPM to 6000+ RPM it only gains 10HP. Again, the engine still makes more HP, but the slope of the curve is much flatter at that point.
Here is the last dyno I had when I was comparing a plenum to a plenum spacer. I had done plenty of polishing and porting on the intake side of the engine. The engine is still making good power above 5K. This was on a dynapack, so the absolute numbers are higher.
With the first dyno of my car, the engine is strong up to 5K, but from 5K RPM to 6000+ RPM it only gains 10HP. Again, the engine still makes more HP, but the slope of the curve is much flatter at that point.
Here is the last dyno I had when I was comparing a plenum to a plenum spacer. I had done plenty of polishing and porting on the intake side of the engine. The engine is still making good power above 5K. This was on a dynapack, so the absolute numbers are higher.
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your probably right... Ive never seen these graphs before.. Good stuff.
Originally Posted by Finiti35
You've seen those 2 on the org right? Max hp as per Infiniti stats is @ 6,200 rpm (6,400 for 05 6MT). Not to disagree with you, but I don't see the loss of hp to be anywhere close to that of the Maxima after 5,700, or all that drastic at all. I agree with MrElussive that the VQ in the G is a high revving engine, my Maxima is nothing like it above 3.5k rpm.
Last edited by akm2k5; Mar 21, 2005 at 12:14 AM.
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rwhp? Or crank hp?
Originally Posted by dentalstud
So a 1/4" spacer yields about 5-7 hp MORE than a Crawford plenum? Good gravy, what would a 1/2" one do? I'm sold. Crawford plenums sound pretty much obsolete.
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From the pictures I saw, the Lancer was not totaled. It had some damage and it was upside down (lol) but it was not dead. The guy either bought that car and paid for the repairs, or insurance covered the repairs of the car and the guy bought another Lancer. If I found out the pics and/or the story, I'll give more info.
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