piston deck height and valve relief cc size on stock pistons?

[Foxfan88]

trying to calculate my CR, how far down in the hold are the stock pistons are how many ccs are all 4 notches in stock pistons?

 

[5spd GT]

I would also like to know the stock headgasket thickness and E7 combustion chamber size.

 

[Rick 91GT]

Deck height varies engine to engine, I have had stockers that are .010" in the hole and .010" out of the hole. I'll run out an cc a stock piston give me a few minutes, if memory serves me correct they are 5cc.

David,Last set of stock graphite gaskets I did were .041" basically a PT8548 is stock replacement, the E7's are advertised 64cc although most vary from 63-65cc.

 

[5spd GT]

David,Last set of stock graphite gaskets I did were .041" basically a PT8548 is stock replacement, the E7's are advertised 64cc although most vary from 63-65cc.

Thank you!

 

[Rick 91GT]

Stock forged piston (had a little carbon deposit) was 5.3cc with all 4 reliefs and slightly dished center.

E7 from a 93 was 63.8cc, again had a little build up....

Too damn cold in my garage to wire brush and glass bead them clean..lol

 

[Rick 91GT]

If your pistons are o deck and I used 5cc as my relief...

* 302 cid *

Bore Size: 4.000
Gasket Bore: 4.100
Piston Top Land Dia: 3.965
Stroke: 3.000
Connecting Rod Length 5.090
Compression Height: 1.600
Deck Height: 8.190
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 5.00
Dome Volume: 0.00
Volume Head: 61.00
-------------------------------------
:COMPRESSION RATIO: 9.177
-------------------------------------



calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.500
Vol. Above Top Ring: 0.90 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 75.55 cc
Cylinder Volume: 617.78 cc
CID: 301.474


(notes/messages)

× Piston Flush with Deck