RS4 Carbon Buildup Removal - Anyone have any tips? Best products? Good DIY?

B6/7 S4/RS4
#41

It’s basically this piece (Thanks NY07RS4 for the pic)

http://i.imgur.com/c0IJ0BR.jpeg

And I broke it exactly where Tony broke his recently:

http://audirevolution.net/forum/index.php?topic=2444.msg67480#msg67480

The interesting thing is if you look at the diagram and draw a line straight up from the “18”, the part from where it intersects that line right to the Y peice is plastic. The piece that goes over the fuel rails and bolts at one spot on the TB is metal. Then the rest of it is plastic where it connects back to the engine.

I took a blade and sliced off the plastic hose piece leaving the original tips on both the metal end and plastic ends at the Y.

I picked up a foot of 3/4" heater hose for a buck and it fit perfectly.

http://www.imgur.com/PqQpzqQ.jpeg

I’ll take some more pics of it fully installed once I get the car back together (waiting on some injectors).

#42

If you can please post pictures of the broken parts? I’d like to know what to watch out for. I know the RS4 is slightly different. I’d still think it would be helpful.

#43

waiting on injectors? Don’t ask BEnSTi or meem or jasonamd where to find them on the cheap :slight_smile:

#44

It’s basically this piece (Thanks NY07RS4 for the pic)

http://i.imgur.com/c0IJ0BR.jpeg

And I broke it exactly where Tony broke his recently:

http://audirevolution.net/forum/index.php?topic=2444.msg67480#msg67480

The interesting thing is if you look at the diagram and draw a line straight up from the “18”, the part from where it intersects that line right to the Y peice is plastic. The piece that goes over the fuel rails and bolts at one spot on the TB is metal. Then the rest of it is plastic where it connects back to the engine.

I took a blade and sliced off the plastic hose piece leaving the original tips on both the metal end and plastic ends at the Y.

I picked up a foot of 3/4" heater hose for a buck and it fit perfectly.

http://www.imgur.com/PqQpzqQ.jpeg

I’ll take some more pics of it fully installed once I get the car back together (waiting on some injectors).

#45

waiting on injectors? Don’t ask BEnSTi or meem or jasonamd where to find them on the cheap :slight_smile:

#46

Any time Mistro!

#47

Any time Mistro!

#48

Hmm…neither of those tools look like they will provide the necessary clearance but it is tough to tell from the pictures, especially for the 2nd one.

I will say this, even if you get the Craftsman piece, wrap your bit one time with electrical tape or something to really get it snug in the actual handle. The magnet force simply isn’t strong enough otherwise. I couldn’t find it in store either but was able to buy it online and then have it shipped to my local store. I think it was part #7475 but that is not coming up with anything on their site any longer.

And funny enough, this summer Costco carried a micro ratchet driver set for pretty cheap that would definitely work. I remember seeing i and thinking it would be PERFECT for IM removal. I just tried to google it and came up with some other options that look like they will work for you. In fact, I think any of the below will work fine.

http://www.amazon.com/Neiko-03044A-Ratcheting-Screwdriver-Close-Quarters/dp/B000XYOUS6
http://www.amazon.com/Great-Neck-51063-Ratchet-10-Piece/dp/B001NCEXGG
http://www.thetoolwarehouse.net/p-6868-mini-ratchet-and-bit-set-38-pc.aspx

#49

Hmm…neither of those tools look like they will provide the necessary clearance but it is tough to tell from the pictures, especially for the 2nd one.

I will say this, even if you get the Craftsman piece, wrap your bit one time with electrical tape or something to really get it snug in the actual handle. The magnet force simply isn’t strong enough otherwise. I couldn’t find it in store either but was able to buy it online and then have it shipped to my local store. I think it was part #7475 but that is not coming up with anything on their site any longer.

And funny enough, this summer Costco carried a micro ratchet driver set for pretty cheap that would definitely work. I remember seeing i and thinking it would be PERFECT for IM removal. I just tried to google it and came up with some other options that look like they will work for you. In fact, I think any of the below will work fine.

http://www.amazon.com/Neiko-03044A-Ratcheting-Screwdriver-Close-Quarters/dp/B000XYOUS6
http://www.amazon.com/Great-Neck-51063-Ratchet-10-Piece/dp/B001NCEXGG
http://www.thetoolwarehouse.net/p-6868-mini-ratchet-and-bit-set-38-pc.aspx

#50

Thanks I ended up picking this thing up from princess auto

http://www.imgur.com/sZ4CvwH.png

It was a tight squeeze but it fit

http://www.imgur.com/kVjsz18.jpeg

#51

Thanks I ended up picking this thing up from princess auto

http://www.imgur.com/sZ4CvwH.png

It was a tight squeeze but it fit

http://www.imgur.com/kVjsz18.jpeg

#52

Hey I got the same tool from princess auto. Seemed to do the trick.

Man it sure isn’t easy (at least for me) to get some of those hidden bolts off…

So I have my manifold off now. Soaking some stuff in seafoam, but planning to get some easy-off next… I’ve looked at a lot of pics, but mine seems really bad, carbon build-up wise…

Somehow when I removed the manifold I broke a part - its a part with the o-ring that inserts into the air intake on the manifold, with the contoured end to match the side of the air-intake. I somehow broke off the part that inserts. Does anyone have a part name or number for this, or where to get it or any other ideas?

I was thinking of taking the manifold to a local shop to get cleaned and ported, I figured why not seeing that I have it removed - any pros or cons or tips I should know about?

Planning on getting some McDonalds straws tomorrow for the shop-vac. Not sure what is best for doing the cleaning, I have a dentist tool, toothbrushes, some popsicle sticks…?

Thanks in advance, I’m sure I’m going to have more questions…

#53

If you can snap some pictures of what broke and what the carbon build up looks like. The pictures of the broken parts on the intake will help the others tell you what’s wrong.

Welcome to the forum. There’s lots of experts on this site so you’re sure to get some good help.

#54

I agree, pictures always help. Heavy oven cleaner will do the trick. Soak the valves and it should be like a mucky goop. Use good shop towels to soak it up and pull it out.

#55

Here is a link to some pics of the broken part.

http://imgur.com/a/4o50h

#56

Some pics of the carbon buildup - pics really don’t do it justice at all…

http://imgur.com/a/pWryu

#57

I should have mentioned, car is a 2007, has about 65k kms (~40k miles) on it, and has never had a carbon clean before.

I guess I should change the plugs and oil as well while I’m at it?

What about the manifold, should I take it somewhere and have it professionally cleaned, ported, etc?

Thanks

#58

Changing the plugs and oil is a great idea

The manifold is fine. You can spend $1000 for ‘porting and polishing’ and it does literally nothing recognizable. People will play with logs and say it helps by 3 hp.

JHM tore apart the B67 S4 and found 15 whp in the manifold. They sold the job (manifold improvements, and they 'd swap you a modded one for a stock one) for $1000 and sold a ton of them. When they tore apart the RS4 manifold on their in house RS4 they decided to leave it as is. That should tell you something…there’s nothing in it.

Where are you located?

#59

Located east coast, Canada.

So there is a little carbon on the manifold - I should just do my best to clean it up a little and that’s it for the manifold?

#60

yes.

where is ‘east coast’? Are there puffins where you live?

I am in Toronto.