Stock Lowport Sr20de power characteristics
Hi guys,
I'm having a little issue with my 1994 Infiniti G20 with a lowport SR20de. The car is stock with 220k miles.
The car seems to run great, you'd never think there's an issue in town or during minor spirited driving. It has plenty, and what seems to be normal amount of power in the low and mid-range.
If you go WOT for the entire rev range, the power begins to die off hard around 6,000 rpm, and by 6,500 there seems to be a harsh fuel cut. It doesn't even feel like a typical rev limiter that an engine would normally "bounce" off of. If you run it up to 6,500 it feels like hitting a brick wall.
This seems to be the case in 1st and 2nd gear, consistently, haven't tried in a higher gear. The tach goes up to 7,500 and as I remember, that's where the rev limiter is supposed to be. The way the engine feels, if I were on a drag strip, it feels like it would be best to shift around 6,000.
I'm trying to get the engine in good condition before I begin playing with it. Here's some of the relevant stuff I've done to it recently.
-Timing set to about 16 degrees BTDC
-New plugs
-New Wires
-Supposedly a new knock sensor (previous owner in the last 5k)
-Physically checked cam timing (looked good)
-No codes
So I am wondering what your Stock Lowport engines' powerband's feel like, is it like what I'm describing? Does your rev limiter kick in this early and the power die off so soon? Better yet, does anyone have a dyno graph of a stock lowport SR?
Thanks for the help.
-Max
I'm having a little issue with my 1994 Infiniti G20 with a lowport SR20de. The car is stock with 220k miles.
The car seems to run great, you'd never think there's an issue in town or during minor spirited driving. It has plenty, and what seems to be normal amount of power in the low and mid-range.
If you go WOT for the entire rev range, the power begins to die off hard around 6,000 rpm, and by 6,500 there seems to be a harsh fuel cut. It doesn't even feel like a typical rev limiter that an engine would normally "bounce" off of. If you run it up to 6,500 it feels like hitting a brick wall.
This seems to be the case in 1st and 2nd gear, consistently, haven't tried in a higher gear. The tach goes up to 7,500 and as I remember, that's where the rev limiter is supposed to be. The way the engine feels, if I were on a drag strip, it feels like it would be best to shift around 6,000.
I'm trying to get the engine in good condition before I begin playing with it. Here's some of the relevant stuff I've done to it recently.
-Timing set to about 16 degrees BTDC
-New plugs
-New Wires
-Supposedly a new knock sensor (previous owner in the last 5k)
-Physically checked cam timing (looked good)
-No codes
So I am wondering what your Stock Lowport engines' powerband's feel like, is it like what I'm describing? Does your rev limiter kick in this early and the power die off so soon? Better yet, does anyone have a dyno graph of a stock lowport SR?
Thanks for the help.
-Max