Cleaning block for new headgasket. Any chance of this to work? - Page 2

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  1. #11
    Quote Originally Posted by williamb82 View Post
    As long as you are not using a metal head gasket, it should be fine. Also, I have never heard of it saying to put silicone around the oil passages. That is a bad idea. If it gets in them, you will have big problems. There are just a couple of spots at the front where the timing cover meets the block that usually get a very light smear of gasket sealer, and that is it.
    The Toyota repair manual says "liquid sealer" and Haynes says RTV type sealeant which i after searching found to be some type of silicone. It also suggests to apply towards the timing cover as you mentioned besides around the oil passages. Perhaps only sugested there for the 5MGE? (i have a 5ME) I used some high temperature silicone, but did keep your comment in mind and not applying any amount that would risk of getting into the oil passages So much appreciated as it did make me reflect on this being a potential issue!

    Quote Originally Posted by Funkycheeze View Post
    Yeah that is fine for a fibre head gasket - make sure both surfaces are scrubbed and rinsed clean with brake cleaner and then install the gasket. Don't add any extra sealer or other products.

    If you wanted to get it cleaner in the car, you can use a large honing stone (basically a big heavy flat piece of cast iron that you move across the block deck by hand) with polishing compound, usually 120 then 300+ grit in 2 stages. That can get it clean and flat enough for a MHG.
    I like the idea, and i was thinking of doing something similar but with some 400 grit wet sand paper and a plane of glass, but since the alignment dowels did not want to come loose so easily and me not being sure if i could get i flat enough anyways i scrapped my idea. Do you perhaps have a link or something to a honing stone that could work? All i get when searching is stones for sharpening knives and similar.

    Quote Originally Posted by SupraFiend View Post
    That pitting around the coolant jacks is actually quite bad. I hope you are serious about wanting to do this in a year or 2 as that is the most likely scenario here. I personally would do what Funky suggested if you can get an appropriate tool, or remove it and have a machine shop do it properly. I don't even recommend people use fibre head gaskets at this point to be honest, they are all crap and will seep in time. Especially if you have pitting like this. If you are not going to deal with this right, I'd try a few coats of copper spray on the best made in japan HG you can find (don't spray the block), on both sides. Silicone won't fly, but I've never had any issues running the copper spray.
    I'm not saying that i want to But if it comes to that then i guess i will have to find a way to do so. At the moment i am a bit limited to working on the car outside when the weather allows and i have no access to a engine hoist or anything. Now at least i know that the block would need some work and can plan for that in advance Do you perhaps have some link to copper spray that could be used for this? Is it the same used for not making bolts seize up from heat?
    The headgasket i got now is a "Stone" and the paper that came with it says it was made in Japan Not sure if good or not but at least did not feel low quality to the touch. Not sure when made though. Could be older than my car itself... Does not seem to be a huge assortment to choose from when it comes to the 5ME unfortunately.

    Anyways i got the engine back together today. And it runs and seems pretty ok! I changed oil and will continue to check if the oil gets contaminated with water (which was the original issue). However my water pump is really bad. The pulley to the fan can move like 10 degrees and it could probably give up and break the shaft any second now, so i can't test drive it that much yet. I recieved a message yesterday that the new one i ordered at least have arrived in europe so i hope to have it early next week

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  3. #12 Member ddd228's Avatar
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    May 2005
    N. Seattle.
    Stone brand. Looks OK to me.
    It states it is a direct replacement,so it is a composite gasket.
    Dave in Seattle. I keep LATE hours.Hidden Content
    '84 type "L" ,Auto ,daily driver. Dk blue.

  4. #13 Member tdream's Avatar
    Join Date
    Oct 2003
    Mesa, Arizona
    Copper spray is at any parts store. I used it and will continue too.

    Sent from my iPad using Tapatalk

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  6. #14 Member SupraFiend's Avatar
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    Mar 2003
    Vancouver, BC
    Well its redundant now if you've put it back together, but good for others searching in the future...

    I don't normally use it, but I do in cases like yours where I can't repair an iffy block or head, or where I'm reusing a metal HG. Most of those come with a soft coating that tries to do what this spray does. That coating generally doesn't survive being installed and removed and the spray is a good replacement IMO.
    Black 86 mk2 Project Car
    New SDR 86 mk2 Daily User, Highway Cruiser AND Parking Lot Abuser in the works!

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