BERKELEY manifolds on a 455
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BERKELEY manifolds on a 455

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    Default BERKELEY manifolds on a 455

    Can someone tell me the trick to putting on Berkeley wet manifolds on a 455 olds---I have the allen bolts and the washers --but the washers wont fit through the access holes and niether will the 5/16 allen socket--and my hands are to big to reach inside----do I need to put sealer under the washers?---will the automotive gasket be ok the one with the metal on one side? thanks for any help

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    Senior Member ICECREAMAN's Avatar
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    Not sure I follow your dilemma on the bolt and washer issue, maybe a picture would help clear up why you're having issues with the bolts and washers. As far as the gasket, ditch the automotive gasket and use straight high temp silicone around each port. Been doing it this way for ever, much better way for a boat.

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by bentshaft View Post
    Can someone tell me the trick to putting on Berkeley wet manifolds on a 455 olds---I have the allen bolts and the washers --but the washers wont fit through the access holes and niether will the 5/16 allen socket--and my hands are to big to reach inside----do I need to put sealer under the washers?---will the automotive gasket be ok the one with the metal on one side? thanks for any help
    Likley is the bolt holes in the Old Packajet manifolds are "enlarged" a bit (thus the need for washers) you might try preloading the bolt/washer set up into the manifold prior to putting it up to the head try holding the bolts in place on the head side with small rubber bands (they'll disolve once tightened) you'll still be able to tighten the Allens thru the PIPe plug holes , Those particular style Manifolds are very prone to warp and distortion hard to remachine and is often case with wet logs in general will warp again right away once machined once or twice ,recommend you use a aft market header gasket with red or orange hi heat silicone vs an oem automotive steel laminates , call if you need some Tom

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    they are a pain! I just pulled some off and had to drill out the pipe plugs as they were so corroded into the alum manifolds. It appears to me that you'd need to pull the end caps, use some type of stick with a hole in it to initially hold the allen screw/washer, then remove the stick after you have the bolt started. My manifolds are now junk but I do have the end caps/risers, misc plumbing parts that are up for sale if anyone is interested. However they might have more value in scrap alum costs than what I can get for them as usable parts!

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    Senior Member 1975sleekcraft's Avatar
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    Quote Originally Posted by ICECREAMAN View Post
    Not sure I follow your dilemma on the bolt and washer issue, maybe a picture would help clear up why you're having issues with the bolts and washers. As far as the gasket, ditch the automotive gasket and use straight high temp silicone around each port. Been doing it this way for ever, much better way for a boat.
    never use gaskets on aluminum logs. it screws them up( bends the bolting area's in ). clean up the manifolds and put a straight edge on them to make sure their straight. if they are not, have them surfaced. a large belt sander does the trick. belt area needs to be bigger than the manifold flanges. took mine to a machine shop. only 20 bucks.

    hy-temp sylicone is all aluminum logs use...from the factory........

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