whats my compression going to be like

[Modular2v]

getting ready to put afrs on the car....need to know what the compression is going to be like with the afr 185 58cc head compared to the 61cc heads....im running flat top probes

 

[Grn92LX]

Rick 91GT should be able to answer this but what head gasket thickness, zero deck block? Should be around 10.5:1.

 

[Rick 91GT]

* 331 cid *

Bore Size: 4.030
Gasket Bore: 4.100
Piston Top Land Dia: 4.000
Stroke: 3.250
Connecting Rod Length 5.400
Compression Height: 1.175
Deck Height: 8.200
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 58.00
-------------------------------------
:COMPRESSION RATIO: 10.511
-------------------------------------



calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.625
Vol. Above Top Ring: 0.78 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 71.43 cc
Cylinder Volume: 679.33 cc
CID: 331.515


(notes/messages)

× Piston Flush with Deck





Friday, September 23, 2005 9:02 am

* 331 cid *

Bore Size: 4.030
Gasket Bore: 4.100
Piston Top Land Dia: 4.000
Stroke: 3.250
Connecting Rod Length 5.400
Compression Height: 1.175
Deck Height: 8.200
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 61.00
-------------------------------------
:COMPRESSION RATIO: 10.127
-------------------------------------



calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.625
Vol. Above Top Ring: 0.78 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 74.43 cc
Cylinder Volume: 679.33 cc
CID: 331.515

 

[Modular2v]

* 331 cid *

Bore Size: 4.030
Gasket Bore: 4.100
Piston Top Land Dia: 4.000
Stroke: 3.250
Connecting Rod Length 5.400
Compression Height: 1.175
Deck Height: 8.200
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 58.00
-------------------------------------
:COMPRESSION RATIO: 10.511
-------------------------------------


calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.625
Vol. Above Top Ring: 0.78 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 71.43 cc
Cylinder Volume: 679.33 cc
CID: 331.515


(notes/messages)

× Piston Flush with Deck





Friday, September 23, 2005 9:02 am

* 331 cid *

Bore Size: 4.030
Gasket Bore: 4.100
Piston Top Land Dia: 4.000
Stroke: 3.250
Connecting Rod Length 5.400
Compression Height: 1.175
Deck Height: 8.200
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 61.00
-------------------------------------
:COMPRESSION RATIO: 10.127
-------------------------------------



calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.625
Vol. Above Top Ring: 0.78 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 74.43 cc
Cylinder Volume: 679.33 cc
CID: 331.515