So you want to build your engine eh? That world of bigger turbos then the GTRS will be opened and the real fun times will begin. But where do you start? This will be a guide to what you will need from start to finish to have everything done right.

We will start out with the simple qestion, “I want to do rods, where do I start?”

Well, before ordering anything you need to know what type of rods you want. If you want to do just drop in rods with your stock pistons, with the 19mm wristpin (which is less safe than a 20mm wristpin, but can still take a beating), you have…

- Integrated Engineering Rods ($350)
- Pauter Rods ($800)

Now, if your ready to change your pistons out for bigger 20mm wristpin, you have a few more options.

- Carillo ($850-$1500)
- Scat ($350)
- Pauter ($750)
- IE ($330)
- Eurospec ($700)

Now, for those of you that decided to get pistons for this job way to go, you have a few options here as well.

- JE Pistons ($600)
- Mahle ($600)
- Wiseco ($600)
- OEM AEB Pistons (these come out of the 97-2000 A4s and have 20mm wristpins) ($100-$200)

Now, your rods (and pistons possibly) came in the mail and your all happy, however, youll need some more things to complete the transaction.

- rod bearings
- rear seal
- head bolts (or studs depending if you want to step up)
- head gasket
- timing belt kit
- pan sealant
- assembly lube
- pistons with rings or OEM rings if using stock pistons

Cool, your all set. Now, you want to make sure you have the tools for the whole job. Tools you will need are

- Torx Set
- Hex Set
- Metric Socket set
- Torque Wrench
- Ring Compressor
- Ring filers

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So F that 1.8T stuff man, your moving on to bigger and better things. You’re tired of this 1.8 stuff and your doing something about it. This is when the B5/B6 split becomes more apparent.

We will start off with the difference between the B5 and B6 1.8T engines.

In 1997, Audi introduced the AEB 1.8T, arguably the best 1.8T ever made. It had a free flowing head and strong bottom end (20mm wristpin) with forged internals. In the year 2000 this free flowing head was replaced with a small port head but kept the strong bottom end until it was replaced in 2001 by the weaker bottom end. In 2002, Audi came out with the AMB, basically a different block design altogether but with the same weaker bottom end and small port head.

Earlier Block Model – 058
Later Block Number – 06A

I will be using 058 and 06A a lot so stay focused here.

Now onto actual displacements. Engine builders round up quite often, which you will see here. Things to note here is that the stock bore is 81mm and the stock stroke is 86.4mm

86.4mm stroke = Stock 1.8T Cranks
92.8mm stroke = AEG/ABA Cranks
95.5mm stroke = TDI Crank

81mm bore x 86.4mm stroke = 1781cc
83mm bore x 86.4mm stroke = 1870cc
83.5mm bore x 86.4mm stroke = 1892.7cc
81mm bore x 92.8mm stroke = 1913cc
83mm bore x 92.8mm stroke = 2008cc
83.5mm bore x 92.8mm stroke = 2033cc
83mm bore x 95.5mm stroke = 2066cc

It is possible to do more but if your going that big you need more info then this thread…

Now, for your custom pistons for this job, you have a few options here as well, just make sure you order them in time they usually take a month to make! Also, you can get many different Compression Ratios, I went with a 9:1 but talk to them about what you want, everyone’s needs are different.

- JE Pistons
- Supertech
- Wiseco

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If you have an 058 block, I’m going to assume your doing the bold route (2008cc) because it is easiest. Now, your basically pulling your whole engine apart to do this so it is much more detailed. Basically you just need one more part, the crank, so now you have

- Pistons
- Rods
- Crank (058 guys use the ABA crank for 2.0 builds)

“You will need to shave the walls on the inside of the block to make the 92.8mm crank with Scat rods work. Cyl #1 has to be shaved the most, then shave the inner reinforcement of #3 and the lower reinforcement of #3. No need to shave the wall on 4th cyl wall but the piston will hit the oil squirter. Answer: Run a copper shim to move the squirter up so it’ll clear the piston squirt.” – Paul@BF

A machined intermediate shaft is needed for everything to fit also. Check Paul’s thread for more info (listed at the bottom)

If you have an 06A block, I’m going to assume your doing the bold route (2008cc) because it is easiest (and even easier then 058 guys). Now, your basically pulling your whole engine apart to do this so it is much more detailed. Basically you just need one more part, the crank, so now you have

- Pistons
- Rods
- Crank (06A guys use the AEG crank a crank out of the new 2.0T FSI motors)

Now, because your motor is comming completely apart, you will most likely have more things to replace, keep in mind some of these may not be needed for you and some may be. Its all up to you. I would get some more opinions with your milage and such.

- crank bolt
- main bolts
- main bearings
- rod bearings
- rear seal
- head bolts (or studs depending on what you want to do)
- head gasket
- timing belt kit
- pan sealant
- assembly lube
- oil pump

Now, for the main bearings, there is a big controversy of which color is best. There are colors on the top bearings (the ones that sit on the top of the crank) that determine their crush factor apparently. Anyway, on the bottom of your block it should have letters, 5 of them, in a row. They should tell you what color your bearings are. Keep in mind that the letters are in German. Mine were Red (Rosen in German) so my block looked like this – RRRRR.

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Ok so you’ve gotten all your parts (although you know youll be at the dealer for those last minute things you break!), good. Now your off to find a machine shop.

WARNING

by this point I would assume that your ready to tear apart your motor. I would get a spare 06A block for myself (they float around Vortex a lot) and build that. My car was down for way too long and it sucked I could have saved myself a lot of trouble by having a spare block!

Ok so for the machine shop, you need to make sure they have done 1.8Ts that work before. Seriously make sure you have talked to someone with a running engine from their shop. Bring at the least your pistons to them, your going to want a

- 83mm Bore/Hone
- Hottank

and you can get whatever other options you want but its all up to you. I got the block decked also and the assembly balanced, but it doesnt matter because I think I mixed up 2 bearings, o well shit happens.

I paid $400 in all (crazy good deal) but the pricing gets way up there depending on the shop/amount of work

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Well, I cant really help you out on this part, it would be the assembly. Make sure if you dont know what your doing that you have someone help you who does or you leave it to professionals. Basically the hardest parts are torquing everything down, ring gapping (I snapped one of my rings in the process ), and getting timing right once the head is on.

Hope you all enjoyed this thread, let me know if you want to add anything else.

Refrences

http://audizine.com/forum/showthread…=105602&page=3

http://www.ducatitech.com/info/bore.html

Random Vortex 1.8T forum threads

Ok here we go:

Do you have to remove the timing belt to take off the head? Yes and No.

I do not remember the exact allen sizes because I bought the Switch-out allen key tool from Autozone, this helps tremendously and is only $10, Everything else is off the top of my head.

Plan to take everything apart , unless you know the secret to put the belt on w/o putting it in service position, i know how to do it , but didnt have the tools, the hard part is putting the belt back on out of service pos. and tensioning it w/o the right tools, but dont sweat it.

There are writeups for the Timing belt, but not for head removal.- Plan on putting the car in service position, then work on the head. Get down to the timing belt (service position) Then just remove the Hydraulic dampener and take the belt off – Dont forget the cam sensor . If you are in a rush,and are replacing the belt you can CAREFULLY remove the belt from the cam gear– Pull side to side then easily use a blunt object to slowly push the belt off the teeth, side by side, carefully and slowly.

Once its off , start disconnecting the exhaust manifold bolts first-The bolt (size 17) nearest the head is a toughguy, use a small ratchet in there and remove it while it still has room to be pulled out, then use an open ended wrench to take it out.

After the EM, start at the Throttle body , remove hose and throttle body (4 screws, size 6 or 8 allen i believe) Remove throttle cable and 2 bolts holding it in. Unhook cruise control nipple. Now is the time to remove the lines under the Intake manifold. There are two. Remove those hoses easily and disconnect throttle body sensor wire. Now remove the 10mm Allen bolt for the IM brace. Then, work your way to the black cooling line that runs from the upper rad hose. Remove those screws holding the metal hose down to the IM. Then there is a connection at the corner of the head that goes down to the filter . Disconnect that hose (using pliers), then start working at the rear head coolant flange. 2 size 10 bolts await you. Try to unscrew these with care, they are sensitive and so is the flange. After that, remove remaining hoses from Coolant flange, 2 I believe , 1 rear , 1 right side. Replace all those gaskets and do not lose clips. Pull and replace Coolant temp sensor while you are at it.

While back there, remove the 2 10mm bolts that connect the rear head flange to the radiator hose. After that, remove the bolt holding down the metal coolant line going across the head and swing out of the way.

Remove Fuel rail and injectors. Youll need a 6mm Allen to get the 2 bolts holding down the rail. After they are out, the injectors pop out with a straight pull. Now remove the 10 10 mm bolts holding down the VC. After that, remove coil pack ground (size 10 as well) then, remove coilpacks and peel them back , resting in them behind the firewall. Remove PCV line that is bolted to VC ( 2 allen bolts) Remove valve cover and carefully set aside, upside-down. Your almost there.

Now: Onto removing the headbolts-

There are two tools that are required for some.

For earlier B5’s (97-98.5, maybe 99.5), you need those two. (Go figure)

First, Go to Napa. Get their headbolt kit (GM) , Its cheap. You are looking for a 12 point.

One of the 5 tools is going to fit our headbolts. From there the tool is short, It’ll only remove the center headbolts and not the bolts in the corners of the Head, as they have a deep well. Well, To solve this problem, I welded a ratchet extension onto the tool itself. ( Or pay someone, cant be more than $5) Make sure they (or you) grind down the weld in order to avoid scraping the walls of the head.

Newer B5 Guys : : You need this Poly-Drive tool::

From here – http://www.zdmak.com/wbstore/main.as…CTMP=1&LowCt=0

(its a 1/2″ drive type)

Earlier B5 guys, You have to have this as well after removing headbolts because when you buy new ones (which you have to), they will be Poly-Drive bolts.

First, Naturally, Remove the Valve cover– Ten 10mm nuts hold it on, as well as the coil packs. They are easy to remove, But remember when pulling the VC up, Pull Evenly from each side, or else it will get stuck and its pretty annoying if you dont.

Removing Headbolts

Removing the headbolts requires a removal pattern in this order:

(Intake cam being the Bottom Row)

1 7 9 5 3

[4 6] 10 8 2 — Parenthese= Plastic Splash cover

They loosen up easy, but make sure you keep unscrewing, as the threads are long.

The head is ready to come off. Put the valve cover back on (just one screw will do) If you are doing it alone like I did, start to break it free from the block easily and rotate and move it around. After it gives weigh, Grab the exhaust manifold and the base of the runners and lift evenly and have something right next to you ready to rest it on, Its not light. Easily place it upside down, resting on the VC on a soft surface, I used a “boogie board” which was made out of strong foam.

And her head’s off:

The red dots signify my bent valves (if you can’t already tell)

While you have the head off, now is a great time to replace a few more things and one mandatory thing:

-I cleaned my squish area just a bit and as well as the surrounding area. Some may argue that it needs to be dirty to form a nice seal, But after cleaning mine, I had zero issues.

-Replace stock oil feed line to the turbo

-Replace PVC pipe from the block , Part number 058 103 213 (wasnt expensive)
http://www.scottweese.com/images/pcv/old_new.jpg

This is a culprit to boost loss and very hard to replace w/ the IM on.

- Onto the mandatory part, you guessed it, The Head gasket ($60)

When you are ready to install the head (dont remove gasket from pkging until you are ready), installation is reverse of removal w/ a few exceptions:

-Remember to PROPERLY install headgasket rightside up with Audi VW emblem facing UP in the lower right hand corner of the head, quite a few people had made this mistake and had to repeat the process all over again.

-Replace coolant

-Remember to replace all coolant line and flange washers

And most importantly,

Install Headbolts in this specific order

Intake cam being the bottom row-

10 4 2 6 8

[7 5] 1 3 9

Start w/ your regular 1/2″ ratchet then torque to 44 lb Ft (60 NM) After that, Take your Regular half inch ratchet and Give an additional HALF TURN. I used two quarter turns for extra control.

- Try to get some help installing the Head if you can- youll need it when trying to line it up with the points. If you cant, take your time and set easily. After it is set, test to see if the head easily moves out of place, if it does, then its not in the right place.

Before you put the VC on, pour some oil over the cams and valves for startup and start connecting the exhaust mani and the rest after you set the Timing belt to TDC and your all done and saved yourself massive amounts of money.

And thats it! Whole process maybe took an hour and a half , wasnt hard right?

NOTE: When setting engine to TDC, set crank a few teeth before TDC if the head isnt already at TDC. This will avoid any compression and allow you to adjust the cam sprocket accordingly with the safety of avoiding the bending of valves.

Now enjoy putting everything else back together!

Part 2

Part 3

Part 4

Part 5