Compression check-up

[We Gone]

Was changing plugs last changed around 2008... Plugs NGK BKR7EIX gap .050

At that time I also did a compression check stock catback Marc' prom
engine temp 195
2- 230 4- 225 6- 228 8- 225
1- 230 3- 226 5- 230 7- 228

Fast forward today 2019 Marc's 510hp package done 12/2013
Cold engine Going back tp AC 41-602
2- 238 4- 238 6- 240 8- 240
1- 232 3- 233 4- 232 7- 234

BLM Left bank 136
BLM right bank 132
Int-L 127
Int R 128
Map Volts 1.33-139
TP Sensor 0.53v
02 R & L 83-890


I have a vid from the scanner readings but can't post here :(

[Jagdpanzer]

Nice numbers,
How many miles in the meantime?


Sent from my iPhone using ZR-1 Net Registry (http://r.tapatalk.com/byo?rid=90383)

[We Gone]

45k in 2008, 53k in 2013 when I took it to Marc, Just turned 62K.

The increase in compression was due to the MLS head gaskets that Marc used.

"The compressed thickness of the MLS gasket is .050" verses .065" for the OE gasket. For a 350 ci engine, the MLS gasket will add .4 to the compression ratio. If the original compression was 11.0:1 it will increase to 11.4:1"