6 Bolt Compression

[cookmeup272]

What is the "perfect" compression on a turbo 6 bolt?

 

[josh38127]

165. Stock from the factory

 

[cookmeup272]

....weird...the guy im buying a motor from said its got 176 across the board.

 

[josh38127]

He may have the block decked. Or the Head may have resurfaced. That would raise the compression.

 

[XiKeiyaZI]

Hrm. Mine are horribly low. Still runs great though.... I should possibly replace the pistons/Rings. ;P

But yeah. Upwards of 150 is good. Below 130 and it's time to do some work.

 

[josh38127]

Hrm. Mine are horribly low. Still runs great though.... I should possibly replace the pistons/Rings. ;P

But yeah. Upwards of 150 is good. Below 130 and it's time to do some work.

Before you do that. Have you replaced your lower fuel injecter seal. My compression was 145 all 4. Replaced the seals it jumped up to.160

 

[dsmfa9nutter]

Make sure it's a turbo block. N/t compression will be 180+.

 

[Calan]

1G (90-94) T/E/L 1.8L NT engine
Compression ratio 9.0:1
Standard compression 185 psi
Service limit 131 psi

1G (90-94) T/E/L 2.0L NT engine
Compression ratio 9.0:1
Standard compression 192 psi
Service limit 145 psi

1G (90-94) T/E/L 2.0L Turbo engine
Compression ratio 7.8:1
Standard compression 164 psi
Service limit 121 psi

2G (95-99) T/E 2.0L NT 420A engine
Compression ratio 9.8:1
Standard compression 170-225 psi
Service limit 100 psi

2G (95-99) T/E 2.0L 4G63 Turbo engine
Compression ratio 8.5:1
Standard compression 178 psi
Service limit 133 psi

2G (95-99) T/E 2.4L NT Spyder engine
Compression ratio 9.5:1
Standard compression 192 psi
Service limit 146 psi

 

[josh38127]

1G (90-94) T/E/L 1.8L NT engine
Compression ratio 9.0:1
Standard compression 185 psi
Service limit 131 psi

1G (90-94) T/E/L 2.0L NT engine
Compression ratio 9.0:1
Standard compression 192 psi
Service limit 145 psi

1G (90-94) T/E/L 2.0L Turbo engine
Compression ratio 7.8:1
Standard compression 164 psi
Service limit 121 psi

2G (95-99) T/E 2.0L NT 420A engine
Compression ratio 9.8:1
Standard compression 170-225 psi
Service limit 100 psi

2G (95-99) T/E 2.0L 4G63 Turbo engine
Compression ratio 8.5:1
Standard compression 178 psi
Service limit 133 psi

2G (95-99) T/E 2.4L NT Spyder engine
Compression ratio 9.5:1
Standard compression 192 psi
Service limit 146 psi

Thanks I was just gonna ask for that info

 

[cookmeup272]

I was searching for that

 

[Calan]

I was searching for that

Came from http://www.dsmtuners.com/forums/articles-engine-fuel/338152-compression-test-vs-leak-down-test.html, originally from the VFAQ