Author Topic: con rod bolts (Read 4340 times)

jimfoo · « **on:** February 03, 2007, 05:13:13 pm »

Where can I get connecting rod bolts for an AAZ? The usual places I get parts from don't list them on their websites. Thanks!

QuickTD · « **Reply #1 on:** February 03, 2007, 08:43:00 pm »

The only place I've found is the dealer. Depending on the year of the engine they're either cheap or insane... The older engines (pre 95) have pins to align the rod caps and take a rather normal looking 12 point bolt, these are $12 each :shock: The newer engines do not have pins in the rod/cap and use a ground shank on the bolt to align the rod caps. These fancy looking bolts, for reasons that I cannot explain, are cheap at $3 each... If you have a 95 or newer engine the bolts are the same as the AHU or 1Z TDI, part number 028 105 425C, should be no problem to get in the US. Older engines use 028 105 425G, these are the expensive bolts and are unique to the AAZ, not sure about availabilty in the US as they don't fit anything sold there...

wolfsburgnut · « **Reply #2 on:** February 03, 2007, 09:40:36 pm »

There is also another AAZ con rod bolt used that is for early, early, early production 93 AAZs, that is a non stretch bolt, that is even more insane (I think 15 or 18 dollars at the dealer) than the pre 95 ones. I found this out because I have one of these engines.

Peter

QuickTD · « **Reply #3 on:** February 04, 2007, 07:01:44 am »

Don't think there were ever any non-stretch rod bolts but there were non-stretch main bolts in the 93 engines, I don't doubt the price...

wolfsburgnut · « **Reply #4 on:** February 04, 2007, 07:13:46 am »

Your right QuickTD, I just got mixed up because I had to buy both the mains and rods at the same time, but they are both different on the early 93s. It turned out that after I bought them, my engine was a VW rebuilt block and had been updated to the newer style, so I had to bring them all back to the dealer and order new ones, but at least I ended up with an extra 20 dollars in my pocket.

Peter

jimfoo · « **Reply #5 on:** February 04, 2007, 12:13:45 pm »

'96, I'm saved. I had already asked the dealer about AAZ, but they didn't have those. Hopefully they were looking up the old style.

andy2 · « **Reply #6 on:** February 04, 2007, 07:19:45 pm »

At work I rebuilt a 95 AAZ and the con rod bolts were $5,the dealer sent the wrong ones the first time 96-97 ($3) which thread in almost all the way before bottoming out on the shoulder,they cannot be used on the older engines(93-95).I guess these bolts ($5 ones) would cover the 93-95 engines and have obviously gone down in price too :wink:

jimfoo · « **Reply #7 on:** February 10, 2007, 06:38:37 pm »

CRAP :evil: I was told my engine was a '96 so I ordered the newer style bolts. Went to start pulling it apart tonight, and it has the old style bolts. So hopefully the dealer will be able to order the right ones since I'm in the US. I was really wanting to get it rebuilt this weekend as I'm gone next weekend.
So, how can I tell exactly what year engine I have?

QuickTD · « **Reply #8 on:** February 10, 2007, 09:05:20 pm »

The dealer will order parts based on the engine serial number, not necessarily the year. The serial number is stamped on the block in the machined area above the oil filter mount, it starts with "AAZ", of course. The various changes weren't introduced all at once but over a range of serial numbers from about "AAZ550000" to "AAZ700000" over the course of the '95-'96 model years. There are some hybrids out there...

The full blown new style engines have a K03 turbo, 2 piece injection pump pulley, automatic timing belt tensioner, slightly different injection pump and bracket, different rods and rod/main bolts, 7mm valve stems instead of 8mm and a rear main seal that is molded directly into the carrier as opposed to the pressed in seal used on earlier models. There are probably some other items I missed.

Author Topic: con rod bolts (Read 4340 times)

andy2