Syncro TDI Info and the WBX Conundrum

[rmcd]

Wish i had the van in front of me. All the wires are labeled and i think found a picture of the sender in the intercooler wired into the ecu.

I have an mgl avionics e3 guage that will monitor egt, cht, temp and pressure using vdo senders. I need to figure out the senders.
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VW LT40 build. Like a Vanagon but 30% larger in every direction and 40% slower even in metric.
https://www.thesamba.com/vw/forum/viewtopic.php?t=749359&highlight=

[ALIKA T3]

[Waldi]

Also my saab ics dont have sensors.

Much more easy to weld a sensor into a inox tube.

[Christopher Schimke]

I started a new thread for my actual conversion. I have a fuel tank question over there so if anyone watching this thread has an interest, I would love the input.

http://www.thesamba.com/vw/forum/viewtopic.php?p=8065591#8065591
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"Sometimes you have to build a box to think outside of." - Bruce (not Springsteen)

*Custom wheel hardware for Audi/VW, Porsche and Mercedes wheels - Urethane Suspension Bushings*
T3Technique.com or contact me at [email protected]

[rotaecho]

So, I'm a little late to the party.

Chris,

I actually went the Bora Parts long-block route. It's not done yet, but you can see my build-up of the block via http://www.vanagondiesel.info/index.php/MTDI_AHU_Conversion_Notes

For quality of the block? Looks good, all the seals I see look as new as the ones I purchased to replace. I don't see the need to replace them.

Ton of great info here!

I hope to have my conversion ready within the next few months.

[rotaecho]

Chris it's a 1z block, but since identical (other than the pistons I think it is), they are the same block as the AHU.

[Christopher Schimke]

- Seven years later - (said in my best French narrator accent from Spongebob)

Yep, that's right. It's been seven years since I last touched my TDi Syncro project. Life...you know?

I reread this entire thread (and others) to try to catch back up on the awesome info provided. Thanks again to everyone who has contributed to this incredible thread. SO valuable.

Anyway, the first AHU engine I bought ended up being a turd. While it could have been rebuilt (and that was the plan), the machine shop that it was sent to ended up losing a whole bunch of parts, and after months and months of having it in their possession, they never did a darned thing to the engine itself. In the interim, I had purchased a new AMC head in anticipation of installing it onto the rebuilt longbolck. That never happened.

As a result of the issues with the machine shop and many lost parts, I decided to purchase a completely different engine. A friend had a 1Z that was a good running engine, so I bought that. I've pulled it apart and everything looks excellent. There's no wear on any of the bearings, no wear on the cam or followers, etc. I did pull the head to inspect the cylinder walls, so now I obviously need to reinstall the head.

So here is the question: Should I reinstall the head that came with the engine that has no issues I can identify, or should I install the new AMC head? My gut tells me to reinstall the original head, but maybe I'm wrong about that. Any insight you can impart would be much appreciated.
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"Sometimes you have to build a box to think outside of." - Bruce (not Springsteen)

*Custom wheel hardware for Audi/VW, Porsche and Mercedes wheels - Urethane Suspension Bushings*
T3Technique.com or contact me at [email protected]

[rotaecho]

OE Head, then a three hole gasket, or two hole think they are made three hole. Even if it had a 1 hole before.

Check the wiki

[Christopher Schimke]

[rotaecho]

From what I've been told; could be wrong. Unless you verify the head is still within spec, a 1hole leaves very little clearance. I was told to stick to 2-3 hole gaskets as it'd leave clearance, but still be within spec. The lower the hole tighter the piston protrosion there is vs a 2 or 3 hole.

The downside I was told would be a slight loss of performance, of which is gained back with nozzles and other upgrades.

I'm sure others will chime in, and there's a lot of info also on tdiclub too.

Totally stay OEM for the head if possible.

[?Waldo?]

If the piston protrusion calls for a 1-notch gasket, I would use a 1-notch gasket (not a 2 or 3 notch). You are messing with the compression ratio, squish, and quench when using a gasket that is thicker than spec.

[MarkWard]

What Waldo says. No telling if the wrong gasket was fitted at one time. Pretty simple to measure the piston protrusion a few different ways. A straight edge and a feeler blade set is something most would have on hand. Measure a few times to get repeatability.
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[ALIKA T3]

Yeah, don't fnck with putting a thin head gasket.

Mine had a 2 hole when it came from the donor.
I rebuilt it, had the machine shop measure protusion after a dry assembly, confirmed 2 notch gasket.

Well, 3 notch starts from memory at 1.10mm, mine was 1.11.

I could hear a slight noise when driving along a wall on the Freeway. Nobody else could hear it but I felt something was off....

Luckily a coolant fitting came part and I blew the head soon after the build.

The valves were touching the pistons, not even enough to mark the aluminum machining marks, just enough to clean the soot.

I had to go to a 3 notch gasket, new AMC head. No noise after that and drove it all the way to Panama border and back! I don't think the 2 notch gasket would have allowed me that....
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Silicone Steering Boots and 930 Cv boots for sale in the classifieds.
Syncro transmission upgrade parts in the Classifieds.
Subaru EJ22+UN1 5 speed transmission
http://www.thesamba.com/vw/forum/viewtopic.php?t=416343
Syncro http://www.thesamba.com/vw/forum/viewtopic.php?t=4...num+gadget

[Christopher Schimke]

Thanks for the info on the head gaskets. I did measure the piston height above the deck and it's 0.91mm across all four. 0.91mm is the lowest piston height listed in the repair manual. This is why I purchased the on-hole gasket, and I think I'll stick with that.

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"Sometimes you have to build a box to think outside of." - Bruce (not Springsteen)

*Custom wheel hardware for Audi/VW, Porsche and Mercedes wheels - Urethane Suspension Bushings*
T3Technique.com or contact me at [email protected]

[MarkWard]

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