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Engine Specific Info and Questions => IDI Engine => Topic started by: vanagonturbo on May 25, 2008, 10:37:16 pm
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Ok guys, I said I wouldnt say anything until a felt good about this. About 10k miles ago, I swapped the 16v out of my Scirocco in favor of a 1.6l N/A with TD stuffs. Many problems were had. One thing was the head gasket. I didnt want to use a fiber HG as that was what failed. I could not easily use the AAZ HG as it had an extra oil return that was not copasetic with the block/head configuration. This extra oil return needed to be plugged. I used MKIV oilpan glue. I lightly coated the area of offense in order to fill the hole and put the head on.
I didnt want to say before to others should this idea prove to be a bad one. turns out its not IMHO. No leaks.
Here is the rundown.
25 psi of boost.
EGTs around 1200 under full throttle.
oil temps around 120C
I drive it hard.
I have had coolant hoses blow, coolant tanks blow, coolant tank caps blow. The glue is steadfast.
I am not going to say this is the end all cure all, but after 10k miles, no problem with the problem area ;)
Hope that helps someone!
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well,i used some glue or silicon based stuff and still no leaks.
i have some coolant issue that is showing in top of head gasket but i think it comes from that hole with a cap that is on the side of the engine(dont know engish name...)t
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freeze plug?
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that´s it :lol:
it only happens when the car cools down and no sign of water in combustion...so must be from there :idea:
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so am i to understand that you are using a 1.6 non turbo block? did you ceramic coat the pistons. is this your 1.6/1.9 hybrid motor?
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non-turbo block and head.
they hybrid is on the stand and the bottom end is assembled and painted.
first things first though, I will be putting a frybrid system in the car before I swap the engine again. *** $5 per gallon.
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non-turbo block and head.
they hybrid is on the stand and the bottom end is assembled and painted.
first things first though, I will be putting a frybrid system in the car before I swap the engine again. *** $5 per gallon.
8)
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I assume you used a hydro head on an a mechanical block?
That oil pan gasket paste for mk4's is awesome, it dries hard which is really good for that kind of application..
Definitely a good mod.. Thanks for the contribution ;)
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naw its a mechanical head. I did the metal hg because the fiber one blew out. I am running 25psi of boost so I figured the metal unit would be better than the fiber one.
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would it be possible to get some more detail as to how you applied the glue to the headgasket?
thanks!
and, was that the only modification you made to the gasket?
-j
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Well, basically, I just applied a smooth film about the thickness of the headgasket and bolted the head on.
No other modifications were done to the gasket. Its been an additional 2k miles since I posted this thread and its still holding with no signs of leaking. However, some other areas around the edge of the gasket are showing signs that maybe the head is lifting a little and resealing. Not losing any coolant though. Also I might point out that the areas that show signs of head lift are not anywhere near the offending return hole in the gasket.
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did you do anything to the oil return port on the head or block?
did you apply the sealant when the gasket was sitting on the block, or just have it on a flat surface when you filled the hole in the gasket?
im about to order a hg, bolts, and a few other odds and ends before i install my freshly rebuilt turbo.
thanks!
-j
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im about to order a hg, bolts, and a few other odds and ends before i install my freshly rebuilt turbo.
thanks!
-j
Bolts?!?!??? :shock: Nooooooo! :( Get studs! :D
Pry that wallet open, eat Mac & Cheese for two weeks, sell a kidney, just don't put those piece of Scheiße streach bolt back in your engine!
Nos-hit, I've been running 25+ PSI boost for over 3 years with the stock head gasket and Raceware studs. Every stop light is a Drag race, every turn Daytona, and not so much as a wimper from the stock head gasket.
I don't care if you get Raceware or ARP, just don't put those gosh darn, piece of crap, good for nothing streach bolt back in your motor.
Not that I have an opinion on the matter....
Oh, By the way, the rubber oil cap gasket cut outs worked on my 1.5TD during its brief life. On a 1.6 its even easier. Audi80 was the first to do this with a mechanical 1.6TD and he has yet to have an issue. Here is his engine with the rubber cut out from the oil fill cap gasket:
(http://www.kotinet.com/matti.farm/Audi/Moottori/122-2289_img.jpg)
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Mine is going together tomorrow with a combination of bicycle inner-tube and Permatex Copper-gasket. I hope it holds. :?
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ive searched a little for the studs, but cant find where to get them.
the oil cap gasket trick, you just cut out a piece to keep the oil from leaking out of the head and place it in? did you have to use any kind of sealant to keep it from moving?
for some reason it seems too simple for me, i must make it more difficult somehow.
-j
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Call these guys. They'll know exatly what you need for studs
http://www.raceware-fasteners.com/
I'm sure ARP could get there eventaully, but from what I here, If you don't have THEIR P/N, it could take a while. And they have a bizar torqueing procedure that involves torqueing and loosening multiple times.(http://www.vwvortex.com/zeroforum_graphics/screwy.gif) Man, mash that poor gasket flat.
"just cut out a piece to keep the oil from leaking out of the head and place it in?"
On a mechanical head, the extra oil hole in the gasket lines up with a coolant passage in the block.
Yup, just cut a circle from a oil cap gasket, stuff it in the hole, and flop on the head. No waxes, polishes or glues. Works good, lasts long time.
Extra difficulty points: drill out the steam holes in the head and block. Use liberal quantities of some light oil while drilling. The block is hard and wants to fight the bit, and the head is gooey and loads the flutes with aluminum goo. Light oil fixes both. And cobalt is your Freund
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so im leaving just a little hole for a bit of oil to drain, got it.
ill get in contact with raceware, thanks.
-j
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one more question, then my thread hijack is complete... where do i find this metal head gasket?
ive searched all of the normal places i order parts online and i cant find anything for the aaz (thats what this gasket is from, right?)
thanks again!
-j
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myke_w here sells them,
http://thedubdoctor.com/parts_site/
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I sell them too ;)
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anyone think of using teflon plastic that is rated to 500 degrees or high temp copper exhaust gasket silicone for this?
and could anyone point to a different thread with metal head gasket on 1.6L info?
the precup being the wrong height and causing the head gasket to blow out makes me want to pay the 12 mpg penalty of a 5.9L cummins that does not have precups,
the metal gead gasket solves this
thank you for showing me those pictures
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What is the part number for the oil pan gasket paste? I might do a combo oil cap and paste. I'll see how that goes.
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im about to order a hg, bolts, and a few other odds and ends before i install my freshly rebuilt turbo.
thanks!
-j
Bolts?!?!??? :shock: Nooooooo! :( Get studs! :D
Pry that wallet open, eat Mac & Cheese for two weeks, sell a kidney, just don't put those piece of Scheiße streach bolt back in your engine!
Nos-hit, I've been running 25+ PSI boost for over 3 years with the stock head gasket and Raceware studs. Every stop light is a Drag race, every turn Daytona, and not so much as a wimper from the stock head gasket.
I don't care if you get Raceware or ARP, just don't put those gosh darn, piece of crap, good for nothing streach bolt back in your motor.
Not that I have an opinion on the matter....
Oh, By the way, the rubber oil cap gasket cut outs worked on my 1.5TD during its brief life. On a 1.6 its even easier. Audi80 was the first to do this with a mechanical 1.6TD and he has yet to have an issue. Here is his engine with the rubber cut out from the oil fill cap gasket:
(http://www.kotinet.com/matti.farm/Audi/Moottori/122-2289_img.jpg)
I still don't get it for some reason.
That hole I can see is a coolant passage no?
If it is then it still has an opening around the bolt. So cant the coolant leak up and around the head bolt/ stud?
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Well, the glue takes care of that. The headbolt also is sealed by its washer. Albeit, not perfectly, but I have had no fluid mixing.
The part number for the glue is D 176 404 A2
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I put mine together last Friday with a metal HG & a piece of bicycle innertube smeared with Permatex high-temp copper gasketing goo. No leaks so far!
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whats the word on these metal head gaskets???
still holding??
I want to run a MLS gasket..but I just dont know how I feel about this rubber half moon mod???
so whats up they still holding??
your should I do my ARP studs and stock fiber gasket??
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still holding with no problems. its been another 4k since I started this thread.
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Still holding here with 21psi boost. No leaks, no mixing. I only have about 3k on mine.
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Still holding here with 21psi boost. No leaks, no mixing. I only have about 3k on mine.
did you use rubber on yours too??
any body try cutting a piece of the gasket lip off that hangs over the edge and cover the hole with that?? then you would have some material that is just like the rest of the gasket??
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Yup, roughed up a bit of bicycle innertube and coated it with the high-temp gasketing material.