Author Topic: MY cure for the metal HG on a mech 1.6l (Read 7017 times)

vanagonturbo · « **on:** May 25, 2008, 10:37:16 pm »

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!

carrizog60 · « **Reply #1 on:** May 26, 2008, 02:33:06 pm »

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

vanagonturbo · « **Reply #2 on:** May 26, 2008, 03:11:04 pm »

freeze plug?

carrizog60 · « **Reply #3 on:** May 26, 2008, 03:16:59 pm »

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:

shegel · « **Reply #4 on:** May 26, 2008, 06:26:01 pm »

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?

vanagonturbo · « **Reply #5 on:** May 26, 2008, 06:57:08 pm »

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.

jtanguay · « **Reply #6 on:** May 26, 2008, 08:42:11 pm »

Quote from: "vanagonturbo"

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.

myke_w · « **Reply #7 on:** May 27, 2008, 01:42:09 pm »

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

vanagonturbo · « **Reply #8 on:** May 27, 2008, 03:17:38 pm »

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.

mufflerbearing · « **Reply #9 on:** June 16, 2008, 10:53:12 am »

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

vanagonturbo · « **Reply #10 on:** June 17, 2008, 04:36:55 pm »

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.

mufflerbearing · « **Reply #11 on:** June 17, 2008, 05:20:09 pm »

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

saurkraut · « **Reply #12 on:** June 18, 2008, 06:39:15 am »

Quote from: "mufflerbearing"

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!

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:

fastvicar · « **Reply #13 on:** June 18, 2008, 07:23:06 am »

Mine is going together tomorrow with a combination of bicycle inner-tube and Permatex Copper-gasket. I hope it holds. :?

mufflerbearing · « **Reply #14 on:** June 18, 2008, 10:47:13 am »

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