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  1. 04-12-2025, 11:44 PM #1
    Amatuer
    Amatuer is offline Junior Member
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    Mercury 3L EGT individual cylinder egt

    Hi all, has anyone tried drilling of the head bolts into the exhaust port of a mercury 3L engine ? I wanna ask around see if anyone has done it before u ruin a fresh built block. PS this photo is not mine but it explains what im trying to do very well. I wanna have EGT per cylinder
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  2. 04-21-2025, 01:59 PM #2
    aj06bolt12r
    aj06bolt12r is offline 5000 RPM
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    Call Action Mobile Marine, 772 528 0754 Ask for Charlie. If he doesn't sell anything I'm sure he knows where you can get what you need. He's pretty deep into modified 3.0 Mercs.
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  3. Thanks David - WI thanked for this post
« 300XS alternator problems | 150 optimax rough/unstable idle, stalls when shifting into gear. Runs ok above idle »

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