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GX tachometer

Subject: GX tachometer
by ddgonzal on 2025/11/4 18:36:08

Datsun 1200 GX came with 6800 rpm redline. The other tacho has a redline that starts at 6400 rpm

the yellow line indicates you have revved beyond peak HP
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The redline is higher than a non-GX engine as valve float doesn't occur until after 6800. This is because of the dual valve springs