Engine build and 6MT swap

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
Felix2566
2nd Gear
Posts: 212
Joined: Sun Apr 09, 2023 2:27 pm

Re: Engine build and 6MT swap

Post by Felix2566 » Thu Jan 25, 2024 9:56 pm

Put some more pictures up of the build if you have some! 😁

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Fri Jan 26, 2024 9:04 pm

Felix2566 wrote:
Thu Jan 25, 2024 9:56 pm
Put some more pictures up of the build if you have some! 😁
Once I get more I will
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Mon Jan 29, 2024 5:54 pm

Over the last few weeks I have been doing a bit of work myself towards the build.
First off I send the front bumper off to be resprayed, over the moon with the finish, compared to how it looked before.
IMG_6899.jpeg
Before respray
IMG_6900.jpeg
After respray
Then today I actually set about building it back up with all the grills.
IMG_6902.jpeg
I also set about sorting the faulty parking sensor problem too.
IMG_6901.jpeg
I also removed all the brackets for the fog lights (because race car) weight saving :lol: whilst also re tapping up the whole wiring loom on the front bumper too.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

Mɐʇʇ
Cruising
Posts: 2724
Joined: Tue Oct 07, 2014 8:30 pm

Re: Engine build and 6MT swap

Post by Mɐʇʇ » Tue Jan 30, 2024 11:03 am

How is the engine rebuild going? I've got a naturally aspirated one that I have half a mind to rebuild - but finding someone who is actually and genuinely competent is a nightmare. Who are you using?

A buddy at the moment paid a well known local machine Shop to sleeve & bore a big block for him, including removing all the oil and core plugs, cleaning all the galleries and reinstalling the cam bearings (if you don't do all that in the right order, you end up with crud on the back side of the cam bearings).

Anyway, not only did they not remove the oil gallery plugs, they mashed the heads up on them and left them like that. And then installed cam bearings anyway. FFS.
"not a professional engineer, mechanic and mechanist"

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Tue Jan 30, 2024 12:32 pm

The build is going well now and coming along quicker than I expected.
We had a massive set back at the start due to bore problems and stuff but that’s all sorted now. Just waiting on the condos bearing turning up then the bottom end will be complete. Forged pistons & rods. New crank bearing and rod bearing. Lightened and balanced crank, rods and pistons along with my flywheel too. So it all singing in perfect harmony😂🤞🏼

My head are being collected this week. After have the inlet ports matched up with the inlet manifold. Exhaust posts match up with my tubular exhaust manifolds. Port, polished and dimpled inlet runners also added in to the mix.
All the over size valve work have also been done with new valve seats and everything assembled up in the heads. Except the new race cams.

All the block and head work has been done by garages/work Shop that specialise in them areas. But the full strip down and rebuild is being done by a company in Derby called Quattro clinic.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

Mɐʇʇ
Cruising
Posts: 2724
Joined: Tue Oct 07, 2014 8:30 pm

Re: Engine build and 6MT swap

Post by Mɐʇʇ » Tue Jan 30, 2024 12:36 pm

Are they custom pistons being made for you? Who is making them?
"not a professional engineer, mechanic and mechanist"

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Tue Jan 30, 2024 1:44 pm

My pistons are a custom set yes to my spec’s but you can buy lower competition forged pistons off the shelf. As well as rods too
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

AceM89
Neutral
Posts: 5
Joined: Mon Feb 12, 2024 7:36 pm

Re: Engine build and 6MT swap

Post by AceM89 » Wed Feb 14, 2024 4:47 am

Any updates on the build, this is so interesting to see the progress.

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Wed Feb 14, 2024 8:28 pm

Next update will be with the next week or two so keep your eyes peeled.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Sat Feb 17, 2024 3:16 pm

Today I added another part to my front bumper! My carbon fibre under headlight trims
IMG_7075.jpeg
IMG_7076.jpeg
IMG_7078.jpeg
IMG_7077.jpeg
I must say I’m very impressed with the fit and the look
It really does matches what I’m going for in the long run.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Mon Feb 19, 2024 7:34 pm

A massive update. The under body resto has no major rust or welding needing doing. (Massive relief)

My bottom end engine build has struggled to find big end bearing. So being a major king race bearing distributor he has leant on them to make bearing for this car moving forward.

Just 1 more thing I’m adding to the C5 RS6 community along with everything else so fare. (Still more to come though) so stay tuned.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

hahnmgh63
1st Gear
Posts: 68
Joined: Sat Aug 16, 2008 4:07 am
Location: Roy, WA

Re: Engine build and 6MT swap

Post by hahnmgh63 » Mon Mar 04, 2024 7:12 pm

Where did you get the Carbon FIber propshaft? I've seen ones for the B5 S4/RS4 but haven't found one for a manual A6/S6 (converted RS6). I've got a TDI DWT 01E (has the larger 130mm flange, Wide & Flexible 1st gear)(updated shift collar and 4/1 Torsen center diff) in my RS6, using a Cast Iron Clutch slave cylinder, not the junk plastic ones, a manual A6 propshaft but a lighter one would be nice. I've heard the 0A3 propshaft is about 30mm shorter than a 01E?? Anyone know for sure?

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Mon Mar 04, 2024 10:19 pm

The carbon prop shaft was a custom build 1 off. But I’m sure if you contacted The Driveshaft Shop (USA) they would be willing to make you 1.

Costs about $2k and around 6/8 months waiting list.
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

hahnmgh63
1st Gear
Posts: 68
Joined: Sat Aug 16, 2008 4:07 am
Location: Roy, WA

Re: Engine build and 6MT swap

Post by hahnmgh63 » Wed Mar 06, 2024 8:28 am

Thanks, I will. Saw their B5 S4/RS4 one but now I know they'll do a custom one.

Sxcarmyboi
2nd Gear
Posts: 207
Joined: Sun Jan 13, 2019 10:58 am
Location: Maidstone

Re: Engine build and 6MT swap

Post by Sxcarmyboi » Fri Mar 08, 2024 5:52 pm

More updates.
Today my carbon fiber bloke has finally finished the very first scuttle panel and coolant res cover flap.
IMG_7176.jpeg
I have also received my turbos back from TTE in Germany. What can I say they literally look like brand new but better.
5A17C732-FEB8-4795-9D1D-3F21D8DB4208.jpeg
Above are the results from the dyno the turbos had after being modified in to the 960’s they are now. As you will see in 1 of the picture I also opted for the 08 exhaust housing adaptors.
Now just for some picture porn (enjoy)
A2720079-2B91-4B6E-95DE-9859F04CF5E3.jpeg
5A325D8A-FBA9-4B42-A20F-4FE63B8A6037.jpeg
I also went with the thermo coating on the hot side of the turbos too. All in aid of helping the engine bay temps stay low.
066C1869-97F6-44DF-B067-60A7860B8E8A.jpeg
The 08 exhaust housing and down pipes will be getting sent away for ceramic coating again just to help with heat management

I have also had an update my carbon fibre prop shaft is being collected tomorrow for shipping too👌🏼
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

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