A Sharp
Proven Member
- 158
- 13
- Nov 18, 2013
-
Platteville,
Wisconsin
This is for my 2g rebuild.
1). Any boost, vac, or exhaust leaks?
BLT'd up to 20 PSI a few weeks ago.
2). Verified mechanical timing?
Adjustable cam gears. Probably could be dialed in a bit more, but they're in the neighborhood of correct.
3). Verified base timing?
No. (2g cas/crank sensor)
4). Ignition system
COP or Stock Coil: Stock
Wire brand and Age: New (forget brand)
Spark Plug brand, type and Gap: NGK BPR7ES -- gapped to .028, and then tried again with .022"
5). Motor health (Compression Test)
Cylinder 1: 150
Cylinder 2: 150
Cylinder 3: 150
Cylinder 4: 150
6). Performed basic throttle body adjustments?
Idle Switch: Simulated through link
Throttle Cable: yes
TPS: yes
BISS: yes
7). Compression ratio
About 8.5:1 (stock).
8). Any known bad sensors or brittle wiring?
I wouldn't rule this out.
9). Any DTC/CEL codes?
Emissions stuff. Nothing important.
11). Base fuel pressure and injector values
Base Fuel Pressure: 43 PSI
Injector Size (cc/min): 1000cc PTEs
12). Properly calibrated and configured wideband sensor
Sensor Brand: LC1. Just bought a brand new Bosch sensor.
Calibration Date: Today.
13). Type of fuel
Type: e85
Percent of Ethanol: Haven't tested it yet, but my fuel trims indicate that it is probably close to 85%.
I keep getting small amounts of knock (1-4 counts) under load. It happens at partial throttle and WOT, usually past 5000 RPM. I'm only running a 16g at 15 PSI, for the moment. The tune is conservative for now (stock 2g timing table and 11.5-11.0 AFRs, gas scale).
Do you guys think this knock is real? In the log I attached, I got 2 counts of knock in a second gear pull. The pull starts 190 seconds into the log.
Thanks.
1). Any boost, vac, or exhaust leaks?
BLT'd up to 20 PSI a few weeks ago.
2). Verified mechanical timing?
Adjustable cam gears. Probably could be dialed in a bit more, but they're in the neighborhood of correct.
3). Verified base timing?
No. (2g cas/crank sensor)
4). Ignition system
COP or Stock Coil: Stock
Wire brand and Age: New (forget brand)
Spark Plug brand, type and Gap: NGK BPR7ES -- gapped to .028, and then tried again with .022"
5). Motor health (Compression Test)
Cylinder 1: 150
Cylinder 2: 150
Cylinder 3: 150
Cylinder 4: 150
6). Performed basic throttle body adjustments?
Idle Switch: Simulated through link
Throttle Cable: yes
TPS: yes
BISS: yes
7). Compression ratio
About 8.5:1 (stock).
8). Any known bad sensors or brittle wiring?
I wouldn't rule this out.
9). Any DTC/CEL codes?
Emissions stuff. Nothing important.
11). Base fuel pressure and injector values
Base Fuel Pressure: 43 PSI
Injector Size (cc/min): 1000cc PTEs
12). Properly calibrated and configured wideband sensor
Sensor Brand: LC1. Just bought a brand new Bosch sensor.
Calibration Date: Today.
13). Type of fuel
Type: e85
Percent of Ethanol: Haven't tested it yet, but my fuel trims indicate that it is probably close to 85%.
I keep getting small amounts of knock (1-4 counts) under load. It happens at partial throttle and WOT, usually past 5000 RPM. I'm only running a 16g at 15 PSI, for the moment. The tune is conservative for now (stock 2g timing table and 11.5-11.0 AFRs, gas scale).
Do you guys think this knock is real? In the log I attached, I got 2 counts of knock in a second gear pull. The pull starts 190 seconds into the log.
Thanks.
Attachments
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