Timing Belt DIY

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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skyegtb
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Timing Belt DIY

Post by skyegtb » Mon Mar 09, 2015 11:18 pm

Hello All - it's been a long time since I last posted on here so thought I would mark my return by sharing a large selection of photos from my recent DIY timing belt change to show people considering the job what is involved. I'm sure this has been covered on here before, but hopefully some of my pictures will help explain the job in more detail. The job itself was very straightforward and with the car in the service position there is plenty of room to do the work. I personally used the proper 'sliding bolts' to put the car in to the service position to begin with, but ended up removing these bolts afterwards to give some extra room for repairing water pump threads and removal / installation of crank and cam seals. For me the job went smoothly apart from the minor setback of 3 of the water pump bolts shearing upon removal which had to be drilled out and re-threaded.
I am not going to add a step by step guide to the job as I would expect you would have a copy of the workshop manual before carrying out this job, but a few tips would be as follows:
If you are struggling to disconnect the upper and lower radiator quick connect hose coupler (like I did) then simply ignore these and disconnect these hoses at the next joint inboard which has a hose clamp.
To get the crank locking tool in position you need to remove the passenger side steel boost hose. Access is difficult for this job but you do not need to remove the anti-roll bar which will save some time.
If (like me) you get one or more water pump bolts shearing, the process I used to remove the remaining part of the bolts was to Dremel the protruding parts of the bolts flat to the block - being careful not to grind the block in any way, then I re-fitted the old water pump and used a sharp centre punch to mark the middle of the damaged bolt ends. I then drilled these out with a 3mm then 5mm cobalt tipped drill bit then re-tapped the holes with a M6X1 tap. For one of the holes I had to use a helicoil, but the basic principle was the same. To do this you need to move the front carrier much further away from the engine to give access for the drill, but it is very easy to do, just use some rope to secure it in place.
To remove the cam and crank seals (highly recommended as access is easy when doing the timing belt and most likely they will all be leaking to some degree) I simply drilled a 3mm hole in the front of each seal then used a self tapper / mole grip / pry-bar to remove the seals. To install the seals I simply used a large socket for the cam seals and tapped them in as far as they could go and for the crank seal I could not find a suitably large socket for the job so had to gently manually tap the seal in flush to the housing with a nylon hammer and screwdriver handle etc. I have removed and fitted dozens of seals over the years using similar techniques and never had a problem in case you think this sounds a little haphazard!
To gain access to the crank seal you need to remove the lower timing 'cog'. The bolt here is a single use stretch bolt and has to be replaced, it is also supertight - I used a 3/4" socket with a 4ft extension bar to remove and install the bolt and would recommend the same to you! The tightening torque for this bolt is 200Nm + 180°
The above points stand out as the things I had to do 'outside of the box' but probably there were others too. The actual setting up of the timing could not be simpler and the cam locking tools work very well. I had the full set of tools which allows the correct setting of tension on the belt, and would advise you to get all of these tools as well. I can add a list of the tools later if anyone is interested. You will also require a 'low torque' torque wrench that works anti-clockwise.
Anyway, here are the pics. I have not added descriptions or comments yet but may do so later. I added a few pics at the end of my cars new wheel and brake colour scheme - previously the wheels were silver and the calipers yellow, bit I decided for a change to black wheels and blue calipers. Any questions just ask!

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Last edited by skyegtb on Sat Jul 04, 2015 9:31 pm, edited 2 times in total.
2003 RS6 MTM 568

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chunky79
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Re: Timing Belt DIY

Post by chunky79 » Tue Mar 10, 2015 7:16 am

Superb right up :notworthy:
previous- Pug 205 gti, 306 gti, 309 gti Goodwood.
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
Gone but NEVER forgotten - C5 RS6 Misano red avant.

Now - Empty garage

If you don't know where you're going, any road will take you there!

bam_bam
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Re: Timing Belt DIY

Post by bam_bam » Tue Mar 10, 2015 10:44 am

chunky79 wrote:Superb right up :notworthy:
*write.

What did you use as the cam locking tool?
No matter where you go, there you are.

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mik15
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Re: Timing Belt DIY

Post by mik15 » Tue Mar 10, 2015 11:12 am

great write up, this should be made a sticky.

Have you mapped out your lambdas? i see no O2 sensors?

you got a boost gauge?

ooohhh yeah, your engine is super clean :)
2004 RS6 by ABT, madly in love with it, RNS-E, ST coilovers, new TC, 19x9x29 RS4 B7 wheels, non-resonated Milltek w/blk tips, TBC....SOLD - but never to be forgotten!
2004 RS6 ebony schwarz, SE exhaust, 19'' rims - SOLD
'09 RS6 C6 - the great white - now, this means business!

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chunky79
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Re: Timing Belt DIY

Post by chunky79 » Tue Mar 10, 2015 11:49 am

bam_bam wrote:
chunky79 wrote:Superb right up :notworthy:
*write.

What did you use as the cam locking tool?
Woooops, major phail. :oops:
previous- Pug 205 gti, 306 gti, 309 gti Goodwood.
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
Gone but NEVER forgotten - C5 RS6 Misano red avant.

Now - Empty garage

If you don't know where you're going, any road will take you there!

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skyegtb
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Re: Timing Belt DIY

Post by skyegtb » Tue Mar 10, 2015 2:39 pm

bam_bam wrote:
chunky79 wrote:Superb right up :notworthy:
*write.

What did you use as the cam locking tool?
The cam locking tool? I used the cam locking bar as pictured above!
2003 RS6 MTM 568

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skyegtb
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Re: Timing Belt DIY

Post by skyegtb » Tue Mar 10, 2015 2:42 pm

mik15 wrote:great write up, this should be made a sticky.

Have you mapped out your lambdas? i see no O2 sensors?

you got a boost gauge?

ooohhh yeah, your engine is super clean :)
The lambdas are still there but for some reason the cable connectors will not fit in the mounts at the aft of the engine bay - it looks like the cables are cable tied to something preventing them to fit in the slots. No boost gauge, but I presume you are referring to the green hose at the passenger side of the bay? That is to control the MTM quad exhaust valves.
2003 RS6 MTM 568

bam_bam
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Re: Timing Belt DIY

Post by bam_bam » Tue Mar 10, 2015 2:43 pm

Sorry, I shoulda scrolled further.
No matter where you go, there you are.

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skyegtb
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Re: Timing Belt DIY

Post by skyegtb » Sat Jul 04, 2015 2:42 pm

Just a little update that to meant to add to this thread previously. The full parts listing for all items I replaced - full timing belt kit, all tensioners, pulleys, bolts, seals etc:

077903137Q Accessory drive belt Qty. 1

077109479D Tensioner dampener Qty. 1

077109485F Tensioner pulley Qty. 1

078109119J Timing belt Qty. 1

077109244E Timing belt roller Qty. 1

077109244C Timing belt roller Qty. 2

077121113D Thermostat Qty. 1

077121004P Water pump Qty. 1

078105229D Crankshaft / vibration damper bolt (big bolt!) Qty. 1

N 10135503 Socket head bolt; M8X52 for small relay rollers Qty. 2

N 10194702 Socket head bolt with; hexagon socket head; M10X58 for big relay roller Qty. 1

N 10205604 Hexagon head bolt (combi); M6X32 for tensioner Qty. 3

N 90637102 Hexagon bolt; M10X1X145X45 for camshaft pulleys Qty. 2

026103085D Shaft oil seal for camshafts Qty. 2

077115147A Shaft oil seal for crankshaft (front) Qty. 1

N 90827702 Oval hexagon socket head bolt; M6X25 for water pump and t-stat housing Qty. 11

078109149 Washer for thrust bearing - cam pulley timing washers Qty. 2

G013A8JM1 G13 coolant 1.5ltrs 50/50 mix with distilled water Qty. 2
2003 RS6 MTM 568

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Shoppinit
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Re: Timing Belt DIY

Post by Shoppinit » Sat Jul 04, 2015 6:21 pm

Awesome.

FAQ'd.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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