Lots of n00b questions please don't flame me to death 1.8TQ

**olethalb** · 12-23-2015 04:45 AM

OK little bit of background,

had bora (jetta) 1.8t's, golf, s3, tt etc etc also b6 for a short time, joined audizine a while back with b7 DTM tfsi quattro running ~360bhp (being euro chp) but sold that and built fastest touran (routan ish) at 400chp and converted to haldex. sold that at the weekend and agreed to buy A4 B5 Quattro

Now my list of no doubt well covered questions that i've searched for but seems to be a mish mash of info.

current engine is AEB with k03s from B6 unmapped

1) can i switch the block for one from a golf (internal waterpump) ?

2) has anyone - is it possible to update the headlight controls to lose the stalk and use the twist knob from a6 4b/c5 for example?

3) what sort of work is involved in swapping to me 7.5 - obviously pedal, tb, coils, maf, injectors, engine harness - any wiring required?

4) after doing a few basic mods i will be looking into a 'BT' ideally topmount to run 400+ chp, i'd rather not buy a kit to keep costs down, i can tig weld stainless / ally so making downpipe / boost pipes / fmic kit etc is not a problem

so far i'm thinking; internal waterpump block
tfsi crank
rods
stock s3 / tt (k04) pistons
AEB head
custom fmic

as for injectors / turbo / clutch i'm not so sure as there's so many options, it's hard to find a decent tuner in the UK who'll rechip and put a decent map / tune on the old style ecu's

i apologise for the broadness of question 4, like i say it's only a run around car so want to keep costs to a minimum, tempted to even try ebay china turbo (don't hang me)

5)what fuel pumps are used on these, i've lost all my 1.8T knowledge messing about with tfsi for so long

thanks all, please be gentle

Olly

**Avant Nate** · 12-23-2015 05:56 AM

What year and engine stamp did you, or are you going to buy?

**olethalb** · 12-23-2015 06:09 AM

it's a 99 AEB but i want to change it for internal water pump motor

**walky_talky20** · 12-23-2015 07:13 AM

1) Yes, but you need a bunch of little stuff (coolant hoses, etc, etc) to do it. Best to have a donor car.
2) I know of no one who has done that. Probably because it would be an absolutely huge amount of work with no real benefit.
3) There are some guides on this, methinks. Something about changing the cluster makes it tricky without changing the entire dash harness, as I recall.
4) There are a lot of words here, but no question mark. I'm not exactly sure what your question is. Injectors will depend on your tune, so pick the turbo size and tune first.
5) Depends on turbo size, injector size, power goals, etc. Check the go-fast vendors and see what they are offering. There are drop-in solutions, or you can DIY some stuff.

**olethalb** · 12-23-2015 08:00 AM

thanks walky talky i did start to ramble

regards headlight stalk i went to view a 1.8tq a year ago and was set to buy when i noticed the headlight controls on a stalk and it just put me off (wierd i know)

afaik regarding block swap b6 1.8t is internal pump so could use that? i want electric fan too

uk has far less bt builds compared to you guys and less DIY builds too - where people are always cagey, would a gt2871r get me 400chp with supporting mods? if that was ok turbo to run i'd then need to figure out 'best' injectors for that set up

thanks again

**Avant Nate** · 12-23-2015 09:25 AM

Do you already have the car in your possession? Because buying a 2001 (assuming euro cars are same as US), would be SO much easier for the things you want to do?

**nynoah** · 12-23-2015 09:59 AM

It would be cheaper and smarter to sell your car and buy an AWM B5 A4.

**walky_talky20** · 12-23-2015 12:48 PM

Originally Posted by olethalb

thanks walky talky i did start to ramble

No worries, brah. I got you.

Originally Posted by olethalb

In regards headlight stalk i went to view a 1.8tq a year ago and was set to buy when i noticed the headlight controls on a stalk and it just put me off (wierd i know)

Yeah, that is weird. Personally, I think the stalk is superior.
- The paint doesn't wear off and look crappy after some years.
- I can turn my headlights on/off without my hand leaving the steering wheel.
- It is an actual, honest-to-goodness physical switch (literally the headlamp current passes right through this stalk switch) instead of some digital input to a computer "module" (like the B6 A4).

For these reasons, I see the stalk and I'm all like "Yes. This is all well and good." but when I see the rotary switches with all their scratched up plastic and rubberized paint falling off, I'm all like

**M-Hood** · 12-23-2015 12:49 PM

Why do you want to switch to a 06A motor? You aren't going to gain anything unless you looking to built it to a 2.0 stroker seeing the 06A is easier to stroke then the 058.

Never mind saw this in your post.

so far i'm thinking; internal waterpump block
tfsi crank
rods
stock s3 / tt (k04) pistons
AEB head
custom fmic

Sorry but you can't run standard 1.8t pistons with a TFSI crank unless you feel like having the top of your pistons sitting well above the block deck. To use a TFSI 2 liter crank you will need to run aftermarket stroker pistons since they have the pin offset to lower the piston down for the longer stroke, so the overall length of the rod/piston need to be shorter for the longer stroke. Stroker pistons and standard 1.8t pistons are not the same.

**olethalb** · 12-23-2015 04:08 PM

I bought the car yesterday and as for buying a later model there was 2 for sale in the uk and none of them were newer than 2000

Coming from dtm / b7 rs4 / touran the b5 is a little outdated so would like the later style headlight switch so i can add auto headlights at some point

Regards block in the uk audi thought it'd be a good idea to extend service intervals so most a4's have suffered oil starvation, the internal pump motors are very readily and cheaply available plus i've worked more on them so feel more at ease, i'm not scared of getting my hands dirty or taking on work etc, thanks for the crank / piston info, the crank idea is not set in stone but possible.

I'll throw some pics up to stop it getting boring

And the b5 due to collect tomorrow

**Wrath And Tears** · 12-23-2015 06:24 PM

Originally Posted by olethalb

Coming from dtm / b7 rs4 / touran the b5 is a little outdated so would like the later style headlight switch so i can add auto headlights at some point

Pretty sure that's not possible as you would need to add a sunlight sensor, as well as a computer you would have to add to have the sensor turn on the headlights. Then you would need a new dash, or to modify the B5 dash which would look terrible, as well as having to make a switch to plug into the rotary dial and then you would have to run those wires to the correct pins on the ecu or something.

What I'm trying to say is as far as I know there is nothing pre-existing you could modify on the B5, you would have to add in everything and figure out all the wiring. If you got 200+ hours to throw at it I'm excited for the build thread

. I think it's a cool concept and I would love to see everything that's actually involved in making it work.

**redline380** · 12-23-2015 06:57 PM

Originally Posted by olethalb

1) can i switch the block for one from a golf (internal waterpump) ?

3) what sort of work is involved in swapping to me 7.5 - obviously pedal, tb, coils, maf, injectors, engine harness - any wiring required?

4) after doing a few basic mods i will be looking into a 'BT' ideally topmount to run 400+ chp, i'd rather not buy a kit to keep costs down, i can tig weld stainless / ally so making downpipe / boost pipes / fmic kit etc is not a problem

so far i'm thinking; internal waterpump block
tfsi crank
rods
stock s3 / tt (k04) pistons
AEB head
custom fmic

as for injectors / turbo / clutch i'm not so sure as there's so many options, it's hard to find a decent tuner in the UK who'll rechip and put a decent map / tune on the old style ecu's

i apologise for the broadness of question 4, like i say it's only a run around car so want to keep costs to a minimum, tempted to even try ebay china turbo (don't hang me)

5)what fuel pumps are used on these, i've lost all my 1.8T knowledge messing about with tfsi for so long

I will answer the quoted questions, so let's see how long I can type before I run out of gas.... And I will preface this by agreeing with nynoah, it will be far cheaper and easier for you to buy an AWM/other 06a/DBW/wideband B5 (don't know Euro engine codes).

1. Yes, you certainly can swap to an 06a block, and like Walky mentioned, it ain't easy. You will need lots on ancillaries to adapt the engine. To me, it wouldn't be worth the cost. With that said, I am fully considering switching my 2000 to an 06a setup in the future. I am no fan of 058 blocks. I want an internal waterpump, and I don't like the fact 058 blocks have intermediate shafts. 06a's are just nicer, and if you are going to build it, you dont want to deal with an 058 block anyways.

3. It is a lot of work, especially since you have an AEB car. But, if you are going to switch the engine to an updated style, you are going to want updated engine management and such. In order to get that, a lot of changes will need to be made. But it isn't really that bad, maybe a weekend worth of work. ECU, harness, sensors, cluster, pedals, etc could all be done in a day in fact.

4. I could almost write a book answering this question, or at least a very long pamphlet, or a small treatise. What you are looking for is what I have, minus a the TFSI crank. I run an AUG block (06a out of a 2001 Passat) with an AEB head. I kept the stock stroke, but put in Mahle Powerpak pistons. I am at about 400chp with a GT2871r, or 320awhp. Well, if you are interested in learning more, click the link in my sig line.

I would like to write more, but when you say you want to keep costs down, I feel it would all be futile. All of this that you want to do is going to run about $10,000 dollars, not sure what that is in Euros, Pound Sterling, or gold doubloons. But it is a significant investment that will only ever pay dividends in tears, cut fingers, and if you are lucky, plenty of smiles.

5. Just get a Walbro 255lph fuel pump, unless going over 400awhp.

The bottom line is, you are going to want another car to swap everything in. And I've checked out UK prices on b5's. They are quite reasonable. But its going to be a lot of work to swap all those parts over. It will also be very expensive. You can spread the cost out over years if you want, it it will be a little easier. You also try to use parts that are more common locally, such as Holset turbos instead of Garrett. Holset was actually an English company before being bought by Cummins.

**olethalb** · 12-24-2015 01:52 AM

wrath and tears - i'll just need to re route wires from column to a dash switch and use a6 4b column contorls / cowling then hook up a relay and use one of the ebay switches for a mk4 golf retrofit, i'm not aftraid of a bit of wiring ;)

**olethalb** · 12-24-2015 01:54 AM

One of these

**olethalb** · 12-24-2015 01:58 AM

https://youtu.be/tlzdrd-w5T0

**olethalb** · 12-24-2015 02:20 AM

apologies for the disjointed reply / pics

redline thanks for taking the time to reply

1) yes you explained my feelings better on the 058 vs 06a blocks

3) i may just buy a B6 1.8t as a parts donor, in the UK the b5 1.8tq are getting hard to find and i'm not sure if i've ever even seen one with later style block / management, as i said there were only 3 for sale in the whole of the uk so buying another one is not an option, besides wheres the fun in that - i like to build things :)

4) i will check your thread - thanks, when i said keep costs down i didn't mean skrimp but why buy what you can make right? 06a tall block with largeport and rods will cost under £500 / $750 dollars, topmount mani $400, lines i can make myself, intake i can make myself, downpipe i can make myself, intercooler kit again just materails so say £300 dollars for all of the above, that leaves injectors, clutch, turbo and few other bits i'm sure. a complete b6 1.8t with all bits to convert should be under £750 maybe cheaper if i can find one with the oil starvation blocked pickup pipe death.

5) thanks, thats external walboro right? i'm so rusty on 1.8t it's all ttrs and pump controllers bla bla in tfsi world haha

**Wrath And Tears** · 12-24-2015 08:15 AM

Has anyone tried putting a b5 passat dash into a A4 yet? Then you would have a spot for the light dial. That kit looks pretty cool.

**olethalb** · 12-25-2015 05:18 AM

I might see if the passat lower knee panel from passat fits, good shout.

Well i collected it yesterday evening

And some new wheels

And popped them on before i got home

Need proper size tyres and spacers - going through mountains of paperwork today and found this laminated dealership ad

**olethalb** · 12-30-2015 01:38 AM

ok so decided the vce are too small as i got stuck on a speed hump into work so i've bought some bbs ch that should be on route, also i went to see a friend of mine last night who has a double garage full of parts / old projects / failed projects mk1 golf 20v, mk2 golf 20v and mk4 20v 4mo. he dug some bits out but is pulling the cars out today for a proper look.

so far he has given me an AGU 06a engine, uprated injectors and an ebay turbo :)

i also removed the after market gearknob and number plate surrounds, excuse the silver gearstick surround the old one was wrapped, i peeled the wrap off but underneath was in bad shape so re wrapped it with all i had to hand.