Om603 head gasket question
Om603 head gasket question
epowers777
10-21-2014, 01:57 AM #1Getting ready to put my head back on. Do I spray it with copper gasket coating or do I just leave it. The pump is turned all the way up with stock turbo. Hopefully soon hx35 intercooler and pump in the future.
Super clean deck and head surface, deck the head if you can.
Duncansport
10-21-2014, 09:23 AM #2No copper stuff
Super clean deck and head surface, deck the head if you can.
DiseaselWeasel
10-21-2014, 10:21 AM #3don't forgett to clean & degrease the holes for the headbolts in the head & threads in the block.
Also I did not know that about the head bolts? What's the best way to clean them? Also should I never seize the holes?
Thanks for your help.
epowers777
10-22-2014, 02:46 PM #4OK I will not coat the head gasket. What Hp can the stock gasket take?
Also I did not know that about the head bolts? What's the best way to clean them? Also should I never seize the holes?
Thanks for your help.
I blow out the bolt holes in the block with compressed air and call it clean.
raysorenson
10-22-2014, 02:54 PM #5I would replace the head bolts, lightly oil the threads and the bottom of the bolt heads with motor oil. Anti-seize isn't as good a lubricant as motor oil and there's little danger of them seizing anyway.
I blow out the bolt holes in the block with compressed air and call it clean.
Lightly oil means dip a rag in oil and wipe it on the bolts. Too much will make things funny.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
10-22-2014, 03:10 PM #6I go overboard and chase with a tap, then blow out.
Lightly oil means dip a rag in oil and wipe it on the bolts. Too much will make things funny.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
About that copper thingy.. its never used on compound head gasket like this. Copper cement is used for some custom MLS gaskets, or steel gaskets to make them seal but thats another story. These need clean surfaces and certain roughness of leveled planes. They must get a grip or combustion pressures will force soft material aside and you know what then happens.
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Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW
As stated, thoroughly clean all surfaces and clean holes with compressed air till they are super clean. Any dirt will alter torque. If you mean to clean threads with a tap, you need speacial chaser designed for this. New bolts are always a good idea as the material fatique over time, lightly lube threads in oil, and also few drops between head of bolt and its friction surface (washer). That head has to be also cleaned so it dont drip oil or water on new gasket prior to seating, or even worse some fluid enters holes for bolts.. then you can crack a block with hydraulic forces from compresing fluid in hole.
About that copper thingy.. its never used on compound head gasket like this. Copper cement is used for some custom MLS gaskets, or steel gaskets to make them seal but thats another story. These need clean surfaces and certain roughness of leveled planes. They must get a grip or combustion pressures will force soft material aside and you know what then happens.
-------------------------------------------------------------------------------------------------------------------------
Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW
DiseaselWeasel
10-23-2014, 04:53 PM #8Same. I rinse out with brake cleaner then blow out with comp. air and then continue to clean the surfaces. Untill I can wipe them without getting a paper towl dirty. Might be a bit over the top - but hey...
epowers777
10-24-2014, 07:38 PM #9I appreciate all the help. I need to lap the valves and put the valve Springs in first. Drill holes for egt Guage and repair water leak were the thermostat is. So maybe 2 weeks. (have 4 kids under 3 1/2
Insane190d
10-27-2014, 07:48 PM #10I recently replaced my head gasket and sprayed the copper stuff on. My headgasket os holding great! Im running 35psi boost.with an 8mm mynä innection pump set at way more than a stock will fuel. Hx35 turbo. Think it was permatex
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