Hi I just bought a Greddy water temp gauge and it comes in Celcius rahter than farenheit, so I need to know the conversion factor, thanks juan c.


What should be the running temp for an 93 rx7 in degrees celcius? let me know thanks juan c.

 

Tc = (5/9)*(Tf-32)

or

Tf = (9/5)*Tc+32

T=temperature
c=celsius
f=farenheit

So to get a rough estimate, just take the indicated temperature in celsius, multiply by two and add 32.

 

C=(F-32)x5/9

 

heres a chart:

C - F * C - F
2 - 36 * 65 - 149
4 - 39 * 66 - 151
6 - 43 * 67 - 153
8 - 46 * 68 - 154
10 - 50 * 69 - 156
12 - 54 * 70 - 158
14 - 57 * 71 - 160
16 - 61 * 72 - 162
18 - 64 * 73 - 163
20 - 68 * 74 - 165
21 - 70 * 75 - 167
22 - 72 * 76 - 169
23 - 73 * 77 - 171
24 - 75 * 78 - 172
25 - 77 * 79 - 174
26 - 79 * 80 - 176
27 - 81 * 81 - 178
28 - 82 * 82 - 180
29 - 84 * 83 - 181
30 - 86 * 84 - 183
31 - 88 * 85 - 185
32 - 90 * 86 - 187
33 - 91 * 87 - 189
34 - 93 * 88 - 190
35 - 95 * 89 - 192
36 - 97 * 90 - 194
37 - 99 * 91 - 196
38 - 100 * 92 - 198
39 - 102 * 93 - 199
40 - 104 * 94 - 201
41 - 106 * 95 - 203
42 - 108 * 96 - 205
43 - 109 * 97 - 207
44 - 111 * 98 - 208
45 - 113 * 99 - 210
46 - 115 * 100 - 212
47 - 117 * 101 - 214
48 - 118 * 102 - 216
49 - 120 * 103 - 217
50 - 122 * 104 - 219
51 - 124 * 105 - 221
52 - 126 * 106 - 223
53 - 127 * 107 - 225
54 - 129 * 108 - 226
55 - 131 * 109 - 228
56 - 133 * 110 - 230
57 - 135 * 111 - 232
58 - 136 * 112 - 234
59 - 138 * 113 - 235
60 - 140 * 114 - 237
61 - 142 * 115 - 239
62 - 144 * 116 - 241
63 - 145 * 117 - 243
64 - 147 * 118 - 244

 

Don't need to use that 9/5 crap. Just take the celcius value and double it, then subtract 10 percent and add 32. Simple. Example: take 38 C:

38x2=76
- 8(7.6 rounded up)
--------
68
+32
--------
100 F

Mike N.

(I need to do this several times a day when working, and this is the easiest to do in my head)