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  1. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Thanks Lou, I've done the timing on it, set it to 2° ATDC as it said on the carburator air filter(Before doing timing, I checked the mark on the crank wheel and it was WAY back my guess about 25° BTDC at idle...) Ive also set the idle RPM to about +/- 750RPM. I than plugged the wires I bypassed...
  2. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Thanks for the advice ESG, will do.
  3. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Hello all my fellow boaters! Excuse my absence, got caught up with school work... Im sure you guys are all wondering if I got the boat to run... or well explode lol. Im happy to announce that its all running! I got it all running and dialed in on Saturday. Worked all day on it but it payed off...
  4. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Makes sense. When Im on the compression stroke both valves will be on the same level? Also what if I didnt rotate the engine at all when it was taken apart, can I just adjust them now? Or its a must to have every cylinder ATDC compression stroke? Update picture almost there🙏
  5. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Okay so in short, everytime each cylinder is ATDC I adjust both intake and exhaust for that cylinder
  6. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    I went to the store and got the Permatex High Temperature Thread Sealant just to be safe. Already installed the head, hopefully I get it all done today. I have a few questions about the pushrods and how to adjust them. Ive watched countless videos online, and a lot of people do it different...
  7. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Question about head bolts. So I think I'm going to reuse mine, they dont look stretched or rusted. I also showed the machine shop mechanic, where I had my head resurfaced and he said they are good to be reused. Also said they reuse head bolts all the time when rebuilding engines. Now, about the...
  8. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    I've noticed that as well and I'm not sure if that's OEM or not... However I just got in the new gasket kit and I have som questions and posibble concerns... I took a side by side picture, and I've also placed the head gasket on the block. There are 4 small(circled in RED), they seem pretty...
  9. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    LOL. Well I looked at it i didnt just take it off the block, I still inspected it it and took a look at all yhr valves which looked great to me, which they were. But yeah I mean I assume everybody took their heads to thr machine shop... I've done the diagram yes with the measurements I got. And...
  10. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Thanks a lot for all the good info and support guys!! A lot to reply to so I'll try to do it all in one post lol. So I got a 90* carpenters square and I measured the block in every single way possible. Sideways, vertically, left, right, across, etc. 0.06mm was the lowest that would not go...
  11. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Little side note. I did find a set of bolts for a pretty good price compared to the other ones I found. Im guessing these should work and it doesnt matter what "color" they are? https://marineengines4less.com/head-bolt-set-gm-2-5l-3-0l-4-cyl-marine-engines-set-of-10-head-bolts/
  12. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Lol thanks, tried to be as neat as I could. Labbeled absolutely every sinlge wire. That makes sense thanks a lot. I've cleaned the block with acetone, and scrapped away any debris and wiped the top of block and cylinder walls and pistons with WD40 just so it doesn't rust. I've also checked to...
  13. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    I actually did that while I was cleaning the bolt threads, but with a tooth pick just so I dont damage anything around... But yeah there is absolutely nothing under the head bolts, it goes straight through to the block cooling system. Which makes me wonder if I should put something on the bolts...
  14. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Perfect thanks! This is what the block looks like in between the two cylinders. Not sure how good you can see it but I'm assuming this is what fire slotted means?
  15. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Hey guys, so just finished taking it all apart. Here are some pictures. Thankfully the culprit is the head gasket lol. Also I inserted 2 pictures of the head bolts. Not sure how visible or what sort of inspection they need. I cleaned them up with acetone and they don't seem to have any rust or...
  16. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    I heard Fel-Pro is mainly focused on automotive parts. I ordered myself a full MANHLE gasket kit. You guys think this one is good? https://www.amazon.ca/dp/B007ZJKGP8?ref=ppx_yo2ov_dt_b_fed_asin_title
  17. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Found a manual. I think it would be the same for my 2008 Merc 3.0TKS? See page 67 https://www.jblllc.com/wp-content/uploads/2015/03/GM-3-L-Service-Manual.pdf Page 69 for pushrods and valves
  18. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Wow amazing lesson lol. Oh man poor guy... Hope he learned his lesson... I know exactly what your talking about now. That really helps a lot I'm going to save that. That answered everything. This guy has a nice clear step by step process of everything:
  19. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Thanks for the advice kd, thats actually very helpful with tightening the lifters. Lifters meaning the Pushrod lifters? About loosening head bolts, if I don't loosen the head bolts in a sequence and bit by bit won't the head crack? I'm afraid if I just start loosening them out of order the head...
  20. DanOnTheBoat

    Mercruiser Setting Timing on 3.0L

    Thanks lol. Noted thanks. I will take it all apart and post pictures here. Also, question about untightening the head bolts. I know that many videos dont show this and dont talk about this but is there a specific way to untighten them? I read that you have to do 1/4 - 1/2 turn for every bolt...
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