Author Topic: Quantum Syncro + 2.0 L Audi TD, project for sale... (Read 38315 times)

therabbittree · « **Reply #60 on:** July 11, 2005, 07:06:23 pm »

yup the dip stick is a press in fit ..i is swaged and has ribbs in the portion that fit in the block.. I have been careful and gotten em out a few ifferent ways..if you lock avise grips on teh lower part and use a hammer on the visegrips has worked, also a small chissel to pry it out ..or a bot that fits from the inside to hammer the dipstick out worked..when i re install i noramml put soem silicon or teflon paste on it and have to usea blunt chisel tyo drive int back in...you may find it easy to just leave it in ..hope this helps
thanks
Deo
\x/ hillfolk!

jackbombay · « **Reply #61 on:** July 17, 2005, 08:52:16 pm »

So the machine shop called and my head is not rebuildable, it is already at minimum thickness

I have lead on a possible complete motor now, which I would really prefer to get this project finished for less money. I'll know what is up with this potentiall motor on tuesday...

therabbittree · « **Reply #62 on:** July 18, 2005, 06:39:37 am »

argh that stinks..maybe you can get a reman head...If you have to do it completely over ..maybe look into the 2.5L tdi engine..partsplace has a few supposedly for $3k but complete with ecu and wiring etc..may be able to get one cheaper if just long block with out pump etc......any way keep us updated thanks
Deo
\x/ hillfolk!

DieselsRcool · « **Reply #63 on:** July 18, 2005, 11:16:24 am »

I had the same thing. A head that was below suggested min thickness. After talking at length with the guy at Aluminum Head Rebuilders I came to the conclusion that this is just an industry standard suggestion. I had them cut and rebuild the head anyway and it is the best running TD I have. He couldn't tell me why it needed to be a certain thickness other than that his published numbers said so. He tried to tell me that it had something to do with the angle of the prechamber exit and may cause a little more black smoke is all. I find it hard to believe that .010" is going to make any difference here when the head gaskets vary more than that.

Does anyone know for sure what happens when a head is shaved too far?
Larry

VWRacer · « **Reply #64 on:** July 18, 2005, 03:11:32 pm »

Quote

Does anyone know for sure what happens when a head is shaved too far?

Well, if it is cut too far, then the valves can impact the tops of the pistons. If it is cut slightly less, the head is more susceptible to warping from heat, and you can suffer the "blown head gasket" syndrome.

I suspect that VW have a bit of a cushion built into their minimum numbers, though, so you may be able to get by with one more .010" cut.

You decision...your head. Good luck!

Mark(The Miser)UK · « **Reply #65 on:** July 18, 2005, 03:26:11 pm »

Quote from: "DieselsRcool"

I had the same thing. A head that was below suggested min thickness. After talking at length with the guy at Aluminum Head Rebuilders I came to the conclusion that this is just an industry standard suggestion. I had them cut and rebuild the head anyway and it is the best running TD I have. He couldn't tell me why it needed to be a certain thickness other than that his published numbers said so. He tried to tell me that it had something to do with the angle of the prechamber exit and may cause a little more black smoke is all. I find it hard to believe that .010" is going to make any difference here when the head gaskets vary more than that.

Does anyone know for sure what happens when a head is shaved too far?
Larry

Surely main effect is to bring valve heads a little too close to piston. Maybe this can be offset by lapping in valves to seats more and then maybe grinding off a few thou from valve stems. I may be talkin' 'ollucks but then I rarely throw anything away; especially if consensus says otherwise :twisted:
Anyway it sounds like you've nothing to loose but everything to gain!

I've shelved looking for a Quattro setup and have to be content with a 'new' purchase of my 3rd Quantum Wagon 1.6TD '85 only 105,000miles for the princely sum of $300 equiv. from a decendant of Mr Perrins of Worcester Sauce fame... ah well I just wish I could find one with a/c. It would be so useful for our usual 2 or 3 weeks sunshine we normally get here in the UK

jackbombay · « **Reply #66 on:** July 18, 2005, 07:09:45 pm »

Well this one is at min thickness and it is warped .017" :shock: Problems arise when you get a tight valve and there are no thiner shims to install, also the edges of the valves get rather thin according to the guy at AHR which could cause problems down the road.

I am hoping for a running used motor from a guy in southern oregon, fingers crossed...

Mark(The Miser)UK · « **Reply #67 on:** July 19, 2005, 02:06:19 am »

Quote from: "jackbombay"

Well this one is at min thickness and it is warped .017" :shock: Problems arise when you get a tight valve and there are no thiner shims to install, also the edges of the valves get rather thin according to the guy at AHR which could cause problems down the road.

I am hoping for a running used motor from a guy in southern oregon, fingers crossed...

Sounds good but make this existing boat anchor a handbuilt fine tolerance spare :wink:

Maybe use a valve seat grinder first or maybe lap with a couple of spare 'sacrificial' valves first.
With a shimmed head its just a matter of cam on and cam followers in with no springs then push each seated valve up to cam and measure gaps. Initially no shims will fit because you are coming from a position where all shims too fat/stems too long so its an iterative process. Grind off surplus from stems. 'Get methodical'

For me it would be purely because I like the challenge and the idea that I'm not going with the 'flow' and the 'I rebuilt/fixed that'.
No dealership was ever saved by my 'sponsorship' :twisted:

jackbombay · « **Reply #68 on:** July 20, 2005, 08:31:46 pm »

I am going to get a used engine at this point. I have a couple of leads, the best is from an 83', 63,000 miles, full gaurantee, it has been "hot tested" and runs fine, it has been compression tested as well, I should be getting thoes numbers shortly. They want $600 which is far less that the cost of a rebuild even if my head was rebuildable...

jackbombay · « **Reply #69 on:** August 05, 2005, 02:27:04 pm »

I have placed a deposit on a 71,000 mile motor from texas, hot run tested, and leak down compression tested with a 90 day waranty. But I will not be able to install it till september.

Mark(The Miser)UK · « **Reply #70 on:** August 06, 2005, 03:22:34 pm »

Quote from: "jackbombay"

I have placed a deposit on a 71,000 mile motor from texas, hot run tested, and leak down compression tested with a 90 day waranty. But I will not be able to install it till september.

Come-on Jack this is getting more suspenseful than waitin' to see who shot JR :shock:

chrissev · « **Reply #71 on:** August 06, 2005, 07:21:15 pm »

Quote from: "jackbombay"

I have placed a deposit on a 71,000 mile motor from texas, hot run tested, and leak down compression tested with a 90 day waranty. But I will not be able to install it till september.

hmmm, 71,000 is nice if it is verifiable. Motor probably would have at least double that left in it, maybe more. Good luck with this one. Hope it doesn't blow up on you like your first deal did.

jackbombay · « **Reply #72 on:** August 06, 2005, 09:36:34 pm »

Quote from: "Mark(The Miser)UK"

Quote from: "jackbombay"
I have placed a deposit on a 71,000 mile motor from texas, hot run tested, and leak down compression tested with a 90 day waranty. But I will not be able to install it till september.

Come-on Jack this is getting more suspenseful than waitin' to see who shot JR :shock:

You and me both, this project has had everything possible go wrong, all engine related of course... The swap should be quick and painless at this point once I get the time to deal with it...

jackbombay · « **Reply #73 on:** August 06, 2005, 09:39:21 pm »

Quote from: "chrissev"

Hope it doesn't blow up on you like your first deal did.

Warranty with reimbursment of shipping makes me confident with this one.

Mark(The Miser)UK · « **Reply #74 on:** October 12, 2005, 08:01:26 am »

Quote from: "jackbombay"

Quote from: "chrissev"
Hope it doesn't blow up on you like your first deal did.

Warranty with reimbursment of shipping makes me confident with this one.

And then?.... Or should I say now ;o)