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    Mercruiser 5.7 Vortec Intake Manifold gasket mismatch?

    Yes - Those are the only numbers I can find. Another guy had the same dilemma. It seems all gaskets fits on the heads.. The manifold that dont seem to have proper wallthickness. Will look at the set you suggested. Thanks a lot!
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    Mercruiser 5.7 Vortec Intake Manifold gasket mismatch?

    Hi Masters and Gurus! I have had water in oil issues with my Mercruiser 350 and machined the heads and changed to new risers/ exmanifolds— now found the problem. When taking the intake manifold off its clear that the gasket did not seal the water passage at the rear... This has not been a...
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    Dry joint Riser on Non- dry joint Manifold?

    This might be close to the solution.. I wonder what makes them say ”must be used with our manifolds” ... http://www.glmmarine.com/product-manifolds.html
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    Dry joint Riser on Non- dry joint Manifold?

    Ok. I dont have any risers at all then. Risers are almost synonymous with ”spacer” -Only to get the creek sufficiently above sea level? What I called secondary elbow is -”exhaust pipe elbow” The c- exhaust hose is oval towards exhaust shutter on mine- otherwise a slightly longer one would...
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    Dry joint Riser on Non- dry joint Manifold?

    Hi! As I am quite new on the forum I hope you bsre with my noob- questions.. ☺️ I have a merc 5,7 from around -97 with vortecs. Seller said 315 hp, but was lying about longblock age.. said -06 We got the heads planar and valves taken care of..Boat is moving ok (Donzi Ragazza 25) with temp...
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    Vortec heads, help Id.

    The heads came out ok - Good power in the boat, but water in oil... 😢 We hope we didnt get all water out from b4 and will drain it a couple of times more. Both on oilstick and with tiny hose to get lower.. But as I see some drops of water seeping out of the riser I get worried... It actually...
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    Vortec heads, help Id.

    Hi DrewOrr! Your post from last year concerning the heads with 13120906 is the only post out there thats a clue to what the heads are =) Did you come up with information on them? I have just gotten mine back from the shop, ground down.. Guess Im puttning them back on, but it would be nice to...
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