So here's my setup. 22T block, Matching Cometic Head Gaskets 0.51 thickness, and 96 20H TT Heads. I was curious what the compression raio was.
I looked at the EJCALCS page and didn't see that setup on there.
Curious about compression ratios
Moderators: Helpinators, Moderators
-
cj91legss
- Fifth Gear
- Posts: 6322
- Joined: Fri Jun 20, 2008 8:17 am
- Location: Lakewood, Wa 98439
- Contact:
Curious about compression ratios
91 L-TW Wagon with a full Swap -RIP
92 SS Prefaced, GD dash swapped, 22T/205 Hybrid 20 psi - BEAST!
93 SS Bone Stock Gone!
94 TW Bone Stock Gone!
91 SS 4EAT Sold!
98 LGT 4EAT
98 LGT Wagon 4EAT
92 SS Prefaced, GD dash swapped, 22T/205 Hybrid 20 psi - BEAST!
93 SS Bone Stock Gone!
94 TW Bone Stock Gone!
91 SS 4EAT Sold!
98 LGT 4EAT
98 LGT Wagon 4EAT
Re: Curious about compression ratios
Did you mean .051 vs. .51 thickness? Or is that mm vs. cm?
Most of the stock EJ turbos make 8-8.5 CR, from what I've seen online. From the EJCALCS "Custom Configurations" list this is probably closest to yours:
Thin SOHC head gasket
Block: MY91 EJ22T
Heads: MY98 EJ25
CR: 8.0:1
My EJ22T/EJ25D project (stock EJ22T HG) is in the 7.4:1 CR range, according to the chart.
Td
Most of the stock EJ turbos make 8-8.5 CR, from what I've seen online. From the EJCALCS "Custom Configurations" list this is probably closest to yours:
Thin SOHC head gasket
Block: MY91 EJ22T
Heads: MY98 EJ25
CR: 8.0:1
My EJ22T/EJ25D project (stock EJ22T HG) is in the 7.4:1 CR range, according to the chart.
Td
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T