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Engine Specific Info and Questions => IDI Engine => Topic started by: 8v-of-fury on June 29, 2011, 12:35:49 pm
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So my brother just texted me at work saying he's got oily substance in his coolant over flow of his 1.6 hydro td.. So we assume HG at this point. I want to put an AAZ metal gasket on it with some head studs as well... Is there any particular gasket I am looking for??
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So we assume HG at this point.
Eliminate the oil leak/cooler.
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Ok if I take that out of the equation.. Flush the coolant and see what happens?
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Myke W is where I got mine. He sold out though so I don't know where to get them. The aaz metal gasket the right thickness is all you need if you oil cooler checks out.
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yea, oil cooler is more common than h/g... easier and cheaper to replace too..
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K got my bro tearing in to it right now. Told him to take the two coolant lines off the cooler, and stick them together. And cap off the two ports on the oil cooler.
Take the rad out and flush it, and flush the motor with the hose and light detergent. We'll see what happens I guess.
Thanks a bunch guys!
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you might want to have him leave those caps off the oil cooler and verify its the culprit...
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you might want to have him leave those caps off the oil cooler and verify its the culprit...
yup, cause oil will leak out the cooler eventually..
and you can avoid the connecting the 2 hoses together if you simply use some n/a hoses that do not have the oil cooler connections..
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Curious because I noticed some stuff in my coolant reservoir recently and wondering if we are seeing the same thing.
Months ago I flushed everything and installed new seals and water pump, thermostat and coolant. Got new hoses as well.
Everything seems fine performance and fluid wise but I have what I would call black sand type particles that are collecting down low in the reservoir. But I have never detected an oil slick at the top of the fluid even after settling, and its all still pink.
I thought maybe some bits were leftover on my new hoses and just slowly circulate and collect there, is that normal and maybe we have the same thing going on?
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do you have a factory oil cooler of unknown age?
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Mine looks like an old part, I just replace the oring and gasket when I had all my stuff off cleaning.
Hmmm thanks for this thread as a reminder, I am going to dump my coolant and blindly replace this part. Does anybody have any issue with the cheap replacement parts they make now, or this is something I should specifically get from vw?
I assume they corrode inside like a heater core and mix on the inside where you can't service it?
On my old f250, that thing has a huge external oil cooler and it has 4 orings you replace. When I brought the truck home oil was puking into the coolant reservoir and ruined all the hoses, etc.
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You might check out thesamba for a new old stock one.
Seems I saw one on there less than a week ago but I didn't find anything besides a used one in my quick search.
I don't have any experience with the aftermarket ones.
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If it is the headgasket, Partgeek had them for a great price. However, a MLS gasket isn't worth the hassle on even a mildly modified engine.
Chris
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Not worth the hassle? Please explain??
$51 shipped to my door next week.
(http://img.eautopartscatalog.com/live/W01331628359REI.JPG)
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Not worth the hassle? Please explain??
$51 shipped to my door next week.
(http://img.eautopartscatalog.com/live/W01331628359REI.JPG)
please do explain..
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There's no engineered torque spec for running MLS with studs. Everything you read on here is just a best guess. In fact, someone posted some general MLS guidelines recently that stated MLS is only suited for stretch bolts. Yes, I know there are plenty of success stories otherwise...
You need a near perfectly flat head and deck.
You need a finer surface finish on both deck and head.
A fiber gasket will seal damn near anything by comparison.
Assuming you get it to seal the first time around, you'll be making a heat-sensitive engine even more prone to overheat related head gasket failure.
20+ psi... sure, MLS is nice insurance. Otherwise it's just internet hype.
My experience is pushing 18 pounds in a Vanagon with no issues since I went back to the fiber gasket for 3 years now.
Chris
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DAMN BOIII. You dominated that question!
Lol, all very good points. Not a race motor by any means.. and not over 18psi.. so fiber it is! :)
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Realtime input here. I have a MLS HG on my Scirocco. It leaks. Not much, just some seapage. The head was machined and it was coarse, not that shiny machining. The block deck was machined the same way. It seeps on the outside but no untoward pressure issues in the cooling system. It runs cool all the time. I run 32psi. Take that for what its worth. I dont think a fibre HG would hold up, and I do agree in the smoothness of the deck surfaces being critical. I am half tempted to swap out the studs for stretch bolts. Studs ALWAYS leak. ALWAYS.
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20+ psi... sure, MLS is nice insurance. Otherwise it's just internet hype.
I wonder why Volvo went to MLS gasket as a service replacement on the D24? They only run 11-12 PSI.
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20+ psi... sure, MLS is nice insurance. Otherwise it's just internet hype.
I wonder why Volvo went to MLS gasket as a service replacement on the D24? They only run 11-12 PSI.
lots of VW gasoline powered engines use the MLS gasket as stock.. most of them never even see anything close to boost..
and lots of Chevrolet engines use stainless shims for head gaskets.. again, not boosted..
and VW IDI diesels came stock with fiber gaskets, and that fiber gasket will hold over 20 psi safely, but still.. the metal gasket is about indestructible, and 99% of the time, within $5 of the price of the fiber gasket..
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I wonder why Volvo went to MLS gasket as a service replacement on the D24? They only run 11-12 PSI.
That would be a question for an engineer involved in that decision. However, I don't believe VW ever specified an MLS for the 1.6 as a service replacement.
Chris
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I am half tempted to swap out the studs for stretch bolts. Studs ALWAYS leak. ALWAYS.
I think the stretch bolts are necessary to allow for the different expansion rates between cast iron and aluminum. Studs don't give, which forces the gasket to take the abuse... or something like that.
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Persactly!
FWIW, the engine that I had in the scirocco before this engine, I used a MLS gasket and some random used head bolts that I found in the bolt bin. Never leaked at 22psi. This was on a mechanical block and the sealant that I used for the extra oil return didnt leak either.
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It took me 3 tries to get a MLS to seal - I like to learn the hard way, I guess. The 3rd lasted a good long time until the oil return/coolant seal hack failed. I used natural rubber that eventually turned to a sticky gooey mess in contact with Dexcool. More than anything, I need my van to be reliable so it was back to the fiber HG with no issues since.
Chris
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I put a crate AAZ in my van about 20k miles ago. Factory MLS gasket. 30psi of boost. Not a hint of a leak so far...
The sealant that I used on the mech engine with the MLS gasket and random head bolts lasted for 20k miles until I pulled the motor. No leaks there either.
I am beginning to think the studs are not the best choice for a DD/WW. All out race car? Sure.