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Engine Specific Info and Questions => IDI Engine => Topic started by: Smokey Eddy on July 12, 2010, 04:47:38 pm
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I have an AAZ block with a 1.6td oil pan.
I want to run the oil return to the oil pan and the cam cover oil breather to the oil return on the back side of the block.
Can i do this? I don't see why not but i might be missing something.
That area shouldn't be under pressure should it? at least no more than the cam cover anyways.
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If it all fits then you should be able to. You will probably have to cross the 2 lines and with the motor mount and turbo it could get tight.
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The AAZ block has a fitting for that purpose in the back of the block.
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The AAZ block has a fitting for that purpose in the back of the block.
the hole at the back is for the oil drain but i said i was using a 1.6td oil pan so there is a fixed fitting on it for an oil drain.
Ed, I assume you mean that you want to tee the crank vent/oil breather to the intake and the block. If you just connect it back to the block the pressure will not have any relief and will build blowing oil out of every seal possible. Also, considering the AAZ already has a block fitting next to the filter flange, adding another at the back of the block would seem redundantly redundant.
thank you, that is the answer to what i was asking. And i know there is a port on the front of the block but the oil drain on the back is threaded where as on the front of the block i'd need to find a suitable flange to mate to that port on the front.
since im having an issue with too much oil coming out of that breather over time (and i know the compression is good) is that an indication to use a better breather?
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it means you need to use a BIGGER breather if you have one and its still puking oil out of the seals.
if you have oil coming out the breather at the rate that the oil level is going low, then something is wrong. better get a catch can or something.. but the engine definitely needs to breath, no breather and it will be a black gooey mess in no time. or blow a seal clear out and puke all the oil out.
and ed, why not use a regular 1.6 oil pan and use the block drain?
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I haven't actually started this engine yet. i just put it in the car today with RadoTD and a friend of mine.
Im just trying to avoid the oily mess that you get in the turbo, intercooler pipes and intake valves with running it into the turbo
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yeah there are no problems per say i just hate the oil that gets caked onto the valves and the IC pipes are always a mess to deal with after driving for 6-8 months.
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but its not like they get nasty in side, its just fairly clean black oil. least its not like grease, and doesnt have lots of crap in it.. a little oil in your intercooler kinda turns it into a big filter. that cools the air off at the same time.
excessive oil in the crank case gasses is not a big deal like andrew was saying, unless you have enough for a runaway..
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but its not like they get nasty in side, its just fairly clean black oil. least its not like grease, and doesnt have lots of crap in it.. a little oil in your intercooler kinda turns it into a big filter. that cools the air off at the same time.
excessive oil in the crank case gasses is not a big deal like andrew was saying, unless you have enough for a runaway..
It's just that every time i've had the head off and looked at the valves they've been CAKED with crap on them. The exhaust valves are always smooth and slender and the intake valves get built up with burnt oil.
You can even notice a difference on the mating surface between the head and the valve. How do other engines deal with this?
In the same manner?
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but its not like they get nasty in side, its just fairly clean black oil. least its not like grease, and doesnt have lots of crap in it.. a little oil in your intercooler kinda turns it into a big filter. that cools the air off at the same time.
excessive oil in the crank case gasses is not a big deal like andrew was saying, unless you have enough for a runaway..
It's just that every time i've had the head off and looked at the valves they've been CAKED with crap on them. The exhaust valves are always smooth and slender and the intake valves get built up with burnt oil.
You can even notice a difference on the mating surface between the head and the valve. How do other engines deal with this?
In the same manner?
only time ive ever seen this is on a neglected gasser.. my diesels always have spotless intakes, from the air filter to the intake valve. never any caked on crud.. just a light film of clean oil all over everything.. do you have a good air filter? the only thing i can see happening is that the air filter isnt doing a good enough job, and is letting fine dust thru and that is mixing with the oil to make some nasty sticky grease.. ive never had anything (at all) on the intake valves of my diesels.. just a slight coating of oil..
do you have good valve seals?
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What merits good ones? These are them (http://www.importcarpartscanada.ca/ShopByVehicle.epc?q=1995-Volkswagen-Golf--Base-Engine--Mechanical&yearid=1995%40%401995&makeid=74%40%40VOLKSWAGEN%40%40X&modelid=7400%3AFT%7C6%3AEB%7C1811%3AED%7C576%3AR%7C2%3ASM%7C20%3AMBC%7C1351%40%40Golf+Base&catid=240154%40%40Engine+Mechanical&subcatid=240478@@Valve+Stem+Seal&mode=PA)
Well, those are the ones i have now. The ones i used prior i got from prothe. But they seem identical.
Perhaps my air filter isn't doing it's job (and apparently never has, nor did the stock one...)
My intake valves have NEVER been clean. Its like cooked on carbon.
The turbo compressor impeller looks fine.
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it might be a special case, because my turbo diesels are the only ones ive laid hands on.. but i cant think that crud on intake valves is normal.
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I thought it was normal coz mine always had it on there =( guess not.
Its funny because with all the cold boost i jam into it you'd think that the valves would be adequately cooled and not have anything get cooked on.
Regardless, i hope that this engine (http://www.vwdiesel.net/forum/index.php?topic=25616.60) lasts long enough that i don't get the chance to find out if it's still being cooked on.