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| Joined: | 05-01-2005 |
| Location: | Minneapolis, Minnesota USA |
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See message #4, above, for tension to use with the Gates Racing BLUE timing belt (both trapezoidal and round-tooth HTD).
Lotus specified the Burroughs BT-33-86J gauge, but it's hard to find and more expensive when you do. The BT-33-73F is commonly available, more reasonably priced, and it's readings are within a pound or two of the 86J.
The Burroughs gauge is more expensive, while the Krikit KR-1 is cheap (~$15 at NAPA). But you definitely get what you pay for.
The KR-1 has two tension scales... always read the POUNDS scale. Use only the KR-1, "NOT" the KR-2 or KR-3.
Note: 34-35 'Krikit' is off the low end of the KR-1's scale. Use the points of a dial caliper to scribe additional lines, extending the scale. Or suck-up and buy a Burroughs.
Frequency meters work well, and there are apps for your smart phone. But the only frequency tension spec Lotus ever gave (1997-ish TSB) is for the black, round-tooth HTD belt. It does NOT apply to the trapezoidal belt.
100-110 Hz with the crank set to 30 BTDC... not TDC as with other methods.
Regards,
Tim Engel
Last edited on 05-28-2019 03:17 am by Esprit2