Author Topic: Head studs/gaskets.. I know I know, its been asked a million times  (Read 1960 times)

August 21, 2010, 10:59:24 pm

gtidiesel1.6

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Changing the headgasket on my 1.6TD this weekend. Engine is from a 92 jetta and i have a few questions that i couldnt seem to get answered from searching, or i just suck at searching, most likely the latter.
1. whats the difference between 11 and 12mm heads? I always hear about these 2 sizes and no idea what that means... How do i tell them apart?
2. I remember hearing the gas 8v head studs work for some diesel motors, which would those be? how would i determine if they will work for me?
3. Since i will have the head off i might aswell do the 1.9TD metal headgasket, do they have the same tolerance groups for the different notch sized gaskets? ie: my 1.6 firbe gasket has 2 notchs, will the 1.9td 2 notch metal gasket be equivalent to the fibre gasket? of course i will be measuring the protrusion anyways.
4. whats a good method to clean the old gasket material off the head and deck of the block, i have used razor blades to get as much off but i just want to clean them up a little more beyond that. any recommendations?

Reply #1August 21, 2010, 11:08:05 pm

maxfax

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« Last Edit: August 21, 2010, 11:11:10 pm by maxfax »

Reply #2August 22, 2010, 03:17:20 pm

gtidiesel1.6

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Re: Head studs/gaskets.. I know I know, its been asked a million times
« Reply #2 on: August 22, 2010, 03:17:20 pm »
How do i determine which gasket i need? i measured the protrusion on all cylinders, do i add them all up and divide by 4 to get the average?
I get 4.0mm when adding them all together and a average of 1mm, does that mean i would order the 1 notch for the 1.9td aaz?

I thought i read somewhere that the 8v arp headstuds work for the diesel engines. I have the 204-4203 kit brand new from when i had my gasser. these wont work for my 1.6td im guessing?

Reply #3August 22, 2010, 03:44:35 pm

Vincent Waldon

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Re: Head studs/gaskets.. I know I know, its been asked a million times
« Reply #3 on: August 22, 2010, 03:44:35 pm »
How do i determine which gasket i need? i measured the protrusion on all cylinders, do i add them all up and divide by 4 to get the average?

Nope, the tallest one wins the day.  Imagine if you had 1mm, 1mm, 1mm, and 5mm.  If you averaged them you'd buy a 2mm, and the piston that pushes up 5mm would bottom out.    ;)
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #4August 22, 2010, 03:50:28 pm

maxfax

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Re: Head studs/gaskets.. I know I know, its been asked a million times
« Reply #4 on: August 22, 2010, 03:50:28 pm »
I thought i read somewhere that the 8v arp headstuds work for the diesel engines. I have the 204-4203 kit brand new from when i had my gasser. these wont work for my 1.6td im guessing?


They work for the earlier diesel's (77-82ish)..  After that they went to the larger 12mm bolts... For 12mm engines you'd need the 251-4701 which are listed for the Ford Cosworth 2.0..