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Engine Specific Info and Questions => IDI Engine => Topic started by: dankcorey22 on May 09, 2011, 07:33:18 pm
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Okay im getting everything on my head new tomorrow. Im using a head off a 1.6 NA my engine is 1.6 TD
Doing last checks tonight to make sure i have everything i need i found out the prechambers off my 1.6 TD head is bigger than my 1.6 NA head PC
Will this head still work ive already spent countless hours porting and polishing this head :-[
I hope this thing will work for me
the pictures...
The one on the left is TD the one on the Right is NA
(http://i671.photobucket.com/albums/vv74/dankcorey22/0509112220.jpg)
same Left TD Right NA
(http://i671.photobucket.com/albums/vv74/dankcorey22/0509112224.jpg)
Head on left is TD on right is NA
(http://i671.photobucket.com/albums/vv74/dankcorey22/0509112225.jpg)
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I don't think so. I thought the ones with the ding in them are TD??? At any rate one is 30mm across and the other is 32mm. Unless you have an inconel stretcher I would say it won't work as planned.
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The ones with the ding in them are smaller i got that head off of a 1.6 NA in the junkyard. The Bigger is the head that came off my car. It was cracked
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Yep, I've only seen the little dent on TD engines.
Letter at the end of the head part number?
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Yep, I've only seen the little dent on TD engines.
Letter at the end of the head part number?
I dont know what they mean. i wish their was more info on the internet about cyl. heads
TD: 068 103 373 E
NA: 068 103 373 M
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The ones with the ding in them are smaller i got that head off of a 1.6 NA in the junkyard. The Bigger is the head that came off my car. It was cracked
the 1.5D and 1.6TD share the same diameter cups. the n/a got the bigger cups..
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maybe that car i bought with the TD engine had a NA head on it. Or maybe the Head i got from the junkyard was a TD head on a NA engine.
IDK... It blows my mind. I believe you all but its backwards from what im experiencing.
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Anyone have any comments on it? I sent it to the machine shop today they said it really wouldnt make a difference maybe the CR just a little.
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It will make a big difference. The smaller cups will fall out of the head!!!! They are only 30mm the bigger ones are 32mm. See if Myke W still has some junk heads to sell the PC out of???
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they sell prechambers new still. thread was up top about 2 weeks ago.
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Sorry to thread jack, but nathan b I have sent you 2 pm's with no response. /jack
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It will make a big difference. The smaller cups will fall out of the head!!!! They are only 30mm the bigger ones are 32mm. See if Myke W still has some junk heads to sell the PC out of???
How will i put bigger PC in the head i got? or will i have to get a new head in all.... Damnit
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It will make a big difference. The smaller cups will fall out of the head!!!! They are only 30mm the bigger ones are 32mm. See if Myke W still has some junk heads to sell the PC out of???
How will i put bigger PC in the head i got? or will i have to get a new head in all.... Damnit
only way is to make the PC bores bigger..
i dont see a 32mm PC fitting in a 30mm hole..
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Soo just to be on the safe side ill probably just buy a reman head for the TD.
Great. All my hard work of porting and polishing the intake ports is gone out the window....
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Alright just priced a rebuild head: $600 :o
I dont have the funds now to buy a $600 rebuilt head so does ANYONE know if my head with the smaller Precups will work with my 1.6 TD?
I was only thinking i would spend around half of that with the machine shop.
Im in a desperate situation now lol I need more peoples input to judge what im going to end up doing
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Why has noone has suggested just running the n/a head with the n/a pre-cups on the TD engine?
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use the head with the smaller prechambers. Port it and run it.
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8v-i dont think anyone does know or they are afraid to tell me to do something. I wont blame anyone if my crap gets messed up. i just want some straight answers.
BillyWillicker- Are you just saying that or serious? Ive already ported it, im just waiting on someone to give me advice to run it or not run the NA head.
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Why has noone has suggested just running the n/a head with the n/a pre-cups on the TD engine?
do this ^ ^ ^
it will work fine. i run a turbo on a complete n/a engine.. so i dont see why you couldnt just use a n/a head..
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N/a head will definately work. I was just thinking you didn't want to port the N/a head since you had all the trouble in porting the TD one. Maybe see if you can find some precups for your ported one.
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Well ill tell my machinist to go ahead and build the N/A one then. I was probably just freaking out or something.
I did port and polish the N/A one, i dont see why porting it matters. I know the TD is bad so im not even worrying about that.
If you have ran a turbo on a N/A engine it will be alright. its the same size pistons its not like it bigger. but i did bore it .040 over but thats not much
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I said this because it will give you a running reliable engine. Thats what you want right?
-edit- That is use the head that you got off the NA engine in the junkyard that has the smaller prechambers in it. Port it out like you did your original head.
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Corey, you are safe using the 85 NA "M" head.
Hundreds and thousands have done this already.
It 'might not' be 100% as optimal as another TD Head.
But - proceed as you had intended.
From reading this thread - the answers were mainly based on confusions. It reads like some thought you wanted to just swap PreCups from head to head.
Guys, he wants to use the whole "M" head from the 85 NA.
He's already ported and polished that one ("M" head).
Not the original TD head ("E").
His factory Mk1 TD head ("E") had Severe case of cracks.
All 4 Mk1 TD engines i have observed that were apparently very original - have had "E" heads. Wolfsburged's 84 included.
Have only observed 3 1985 NA engines - but all 3 had "M" heads.
The 3 local and all original 85 TD cars - all have "N" heads.
Both of my Hyd. TD engines have "T" heads. fwiw
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just in case you need more reassurance, my dad has been driving an 85 td jetta with stock block and na head with td exhaust valves in it since 2003 or 2004 with no issues, it runs great
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Thank you all for answering my question. Im sorry if i cant word out thing good. My brain is thinking at a much faster pase than i can come up with the vocabulary to keep up.
Thanks Baron!
Ill tell the machine shop to go ahead with the (M head)
2 of the Precups on the M head has just falling out, To get them to stay back in im going to hit the sides with a hammer so they will stay maybe put locktite on them. What yall think?
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Corey, you are safe using the 85 NA "M" head.
Hundreds and thousands have done this already.
It 'might not' be 100% as optimal as another TD Head.
But - proceed as you had intended.
From reading this thread - the answers were mainly based on confusions. It reads like some thought you wanted to just swap PreCups from head to head.
Guys, he wants to use the whole "M" head from the 85 NA.
He's already ported and polished that one ("M" head).
Not the original TD head ("E").
His factory Mk1 TD head ("E") had Severe case of cracks.
All 4 Mk1 TD engines i have observed that were apparently very original - have had "E" heads. Wolfsburged's 84 included.
Have only observed 3 1985 NA engines - but all 3 had "M" heads.
The 3 local and all original 85 TD cars - all have "N" heads.
Both of my Hyd. TD engines have "T" heads. fwiw
i have a mk1 TD engine, dunno exactly (83-84 i imagine, build dates of 82 on many pieces) what year it is, has a "N" head.. solid lifters
its the right head too, dimples in the pre chambers and everything..
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2 of the Precups on the M head has just falling out, To get them to stay back in im going to hit the sides with a hammer so they will stay maybe put locktite on them. What yall think?
I think you can do like this..
(http://forumbilder.se/images/e13201112511172b6.jpg) (http://forumbilder.se)
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2 of the Precups on the M head has just falling out, To get them to stay back in im going to hit the sides with a hammer so they will stay maybe put locktite on them. What yall think?
I think you can do like this..
(http://forumbilder.se/images/e13201112511172b6.jpg) (http://forumbilder.se)
I was actually thinking about something like that. but i skipped that idea for the head gasket is more pron to leaking probably.
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i don't think they can spin in there can they? i haven't seen one with loose chambers in a while, but as long as they're in straight they should be fine
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i don't think they can spin in there can they? i haven't seen one with loose chambers in a while, but as long as they're in straight they should be fine
No they cant spin, they have a nipple that sticks out to keep it from turning.
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For what it's worth, on my recent rebuild I had 2 pre-chambers wanting to keep falling out during re-assembly, even though I had to wail on them pretty good with a hammer and punch to get them out when I was taking it apart. I peened them to hold them in place. Just my opinion but I would think once you get the head back on there's little chance of them coming out as about half their diameter is mashed down against the head gasket. Seems to me they'd have to break apart to come out.