i4c Products


Bill, I had another compression ratio site, but I think I lost it.
The original Saito 80 had the highest compression ratio ever recorded.
Some folks just don't know that. This chart shows almost 160.
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Model Engine Compression Readings


All data was compiled using new unrun engines, two drops of light oil in cyclinder
and hand flipping only, no electric starters.

BRAND
MODEL
TYPE
INDICATED PSI

ENYA Super Sport 40BB TN ABC
115

ENYA CX 50 ABC
125

ENYA 60 XF-4 ABC
130

FITZPATRICK 60 ABC
120

FOX 45 BBRC RING
110

IRVINE 46 R/C ABC
135

MAGNUM XL 15 ABC
75

MVVS 40 ABC
112

OS MAX 10 FP ABC
80

OS MAX 20 FP ABC
90

OS MAX 25 FP ABC
100

OS MAX 35 FP ABC
108

OS MAX 40 FP ABC
112

OS MAX 40 FP-S ABC
105

OS MAX FS 91 RING
135

OS MAX 40 SF RING
98

OS MAX FS 70 RING
115

OS MAX 46 SF ABC
122

OS MAX SF 46 RING
115

OS MAX SF 61 ABC
156

OS MAX FS 40 RING
115

OS MAX FS 52S RING
115

OS MAX FS 48 RING
115

OS MAX .12 CZR (CAR) ABC
78

OS MAX .21 (CAR) ABC
80

RJL K 61 D-RING
110

SAITO FA 91 RING
160

SAITO FA 80 RING
158

SAITO FA 65 RING
140

SAITO FA 50 RING
110

SUPER TIGER GS 40 RING
110

THUNDER TIGER GP 40 ABC
94

THUNDER TIGER PRO 40 ABC
114

THUNDER TIGER PRO 46 ABC
115

THUNDER TIGER PRO 61 ABC
126

THUNDER TIGER GP 25 ABC
70

WEBRA SPEED 120 D-RING
130

YS 45 FS ABC
130

ZENOAH G-62 (Gasoline) RING
115

FBD.