L Holm Posted September 5, 2015 Share Posted September 5, 2015 I have blown the head gasket. After removing the head and inspected the gasket, it looks likethe gasket has erosioned from the "metal ring" see picture. There is a small pot nere the 1st and 4th bore, where the gasket have collapsed. Why those pots? Does all this due to a bad qualty gasket or ...? When reassembling do I add something (Hylomar or ...) on the gasket? Quote Link to comment Share on other sites More sharing options...
L Holm Posted September 5, 2015 Author Share Posted September 5, 2015 And the second foto Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted September 5, 2015 Share Posted September 5, 2015 First thing to check is that you have the right gasket.From the second photo I can see that you have the recessed type block. This must be used with a gasket that has thicker metal rings (fire-rings) around the cylinders. This type of gasket has a tab on it that sticks out at the back of the engine.There are also engines that don't have the recesses around the cylinders and use a different gasket with thinner fire-rings. This gasket will fail quickly if used on an engine with recesses.I prefer to use the black gaskets made by Payen. These don't need any extra sealant.Nick Quote Link to comment Share on other sites More sharing options...
L Holm Posted September 6, 2015 Author Share Posted September 6, 2015 Thank's NickI will hunt for a "Payen" gasket here in Sweden!If I can't find any supplier, from who can I order it ?RegardsLennart Quote Link to comment Share on other sites More sharing options...
1300dolly Posted September 6, 2015 Share Posted September 6, 2015 I only use Payen, check on Ebay they often appear there. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted September 6, 2015 Share Posted September 6, 2015 Payen part no. AK280 for recessed blockNick Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted September 6, 2015 Share Posted September 6, 2015 James Paddock in the UK sells them to 😉 Quote Link to comment Share on other sites More sharing options...
JohnD Posted September 6, 2015 Share Posted September 6, 2015 Jigsaw sell nothing else.John Quote Link to comment Share on other sites More sharing options...
L Holm Posted September 6, 2015 Author Share Posted September 6, 2015 Thanks all Quote Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 7, 2015 Share Posted September 7, 2015 and a pet hate , also check the washers have not deformed , many start to collapse under the load on the nut, its important to use hd nuts and washers , many gaskets fail due to the washer deformation looses torque and clamp load if they are not nice and flat they must not be reused Canely sell the Heavy duty nuts /washers this is due to the high loading of 46lbft on a 3/8" stud std nuts washers will not survive .Pete Quote Link to comment Share on other sites More sharing options...
L Holm Posted September 7, 2015 Author Share Posted September 7, 2015 Do you re tighten the nuts after some miles? Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted September 7, 2015 Share Posted September 7, 2015 Quoted from L Holm Do you re tighten the nuts after some miles? Yes. I do them after 500 miles. Following the normal tightening order, I loosen each nut slightly in turn, then re-torque to the specified value.Some prefer to do them sooner, after just one or two heat cycles.Not quite clear whether you are talking about a 4 or 6 cylinder engine. If a six cylinder it will have bigger 7/16" studs and higher torques - something that not all the manuals are very clear about.Nick Quote Link to comment Share on other sites More sharing options...
L Holm Posted September 7, 2015 Author Share Posted September 7, 2015 It's a Spit 1500 -79 Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted September 7, 2015 Share Posted September 7, 2015 Ah, ok.Gasket AK260 then (still with tab on the back). Studs are 3/8" and need all the help they can get to hold the torque as Pete says above.Nick Quote Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 8, 2015 Share Posted September 8, 2015 Nick, mk1 6 cyl also has 3/8 studs its only 7/16 when mk2 came along , me thinks the low tech washer softness is an available problem on many makes , too hard they crack too soft they give way ...can we win ???Pete Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted September 8, 2015 Share Posted September 8, 2015 Yep, know about the Mk1 6. I've always found the OE washers to be fine and usually good to go again.Nick Quote Link to comment Share on other sites More sharing options...
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