[Juiced46]

Originally Posted by sA x sKy

Please explain..I've read the opposite.

What you read is wrong and a myth from people that do not understand how meth works and they are just assuming this because they are spraying a liquid into the intake


Meth has a flashpoint of around 50-60* F, by the time it hits the back of the valves it has already been vaporized, it is not in liquid form by that time. Its not going to clean jack shit

Tell you what, to further prove my point. I will offer a valve cleaning service to anyone in the CT area that has been running meth religiously and has never had a valve cleaning done, but the car needs to have some miles on it. I will offer it at a discounted rate from what I usually charge and I will take pics of what the intake valves look like after running meth. I will guarantee, they will not be clean and there will be a shit ton of build up on it.

[sA x sKy]

Originally Posted by Juiced46

What you read is wrong and a myth from people that do not understand how meth works and they are just assuming this because they are spraying a liquid into the intake


Meth has a flashpoint of around 50-60* F, by the time it hits the back of the valves it has already been vaporized, it is not in liquid form by that time. Its not going to clean jack shit

Tell you what, to further prove my point. I will offer a valve cleaning service to anyone in the CT area that has been running meth religiously and has never had a valve cleaning done, but the car needs to have some miles on it. I will offer it at a discounted rate from what I usually charge and I will take pics of what the intake valves look like after running meth. I will guarantee, they will not be clean and there will be a shit ton of build up on it.

Wow..that's an eye opener. So 30K is the general time the valves should get cleaned?

[Juiced46]

Originally Posted by 2turbodinan

I live in CA and am due for a valve clean. I was quoted 215 for the cleaning and I'm sure it's not steamed, or is it?

For $215, they arent removing the intake and walnut blasting for sure.

[rooringhusky]

Originally Posted by Juiced46

What you read is wrong and a myth from people that do not understand how meth works and they are just assuming this because they are spraying a liquid into the intake


Meth has a flashpoint of around 50-60* F, by the time it hits the back of the valves it has already been vaporized, it is not in liquid form by that time. Its not going to clean jack shit

Tell you what, to further prove my point. I will offer a valve cleaning service to anyone in the CT area that has been running meth religiously and has never had a valve cleaning done, but the car needs to have some miles on it. I will offer it at a discounted rate from what I usually charge and I will take pics of what the intake valves look like after running meth. I will guarantee, they will not be clean and there will be a shit ton of build up on it.

This...!

Vas is also right that Meth does not relieve the need for intake valve cleaning..

Everyone must do it WITH or without meth...it is a byproduct of the newer Direct Injection systems in our cars..

[waterp7]

Where can you get a walnut blasting of the intake valves in So Cali?

[eduardomi]

Originally Posted by waterp7

Where can you get a walnut blasting of the intake valves in So Cali?

+1

[DMA]

I used carburator cleaner and brake cleaner let them soak in the carburator cleaner like 30-60min depending on the severity then used gun cleaning brushes I got at Walmart sprayed some brake cleaner while scrubbing bent the brushes to get the backs they came out squeaky clean and they were full of gunk. It took long time from just letting the chemicals sit. IMHO i dont see the need to walnut blast but it would have probably been easier and faster. I thought it was a fairly easy process to DIY, Downpipes were 1000% worse to DIY.

[slowSwede]

Does anyone know how coarse/fine the grain they use to clean the valves is?

[Todd135i]

I recently experimented with walnut blasting, chemical and soda blasting. Soda blasting was by far the best of the 3, in my opinion.

I'm planning on doing a write-up when I get some time. I also made a plate to keep everything in the port so the engine stays clean.

[stressdoc]

Got my intake system blasted a month ago. Fantastic results, great price to boot. For anyone in Missouri or close states with >50k miles I would jump on this opportunity.

[achien]

The BMW dealer had my car cleaned without using the walnut blaster.

They basically soak the intake valves in chemicals and hand-scrubbed it.

My car had the "engine light" problem before 50k km, so this translates close to a little more than 30k miles.

Originally Posted by apkraven

my car is in the service, valve cover cracked , m3 differential install and such on. my guys tell me they won't be able to blast clean the valves , but they are going to brush some strong chemical solution and scrub it off, anyways i guess when the intake manifold is disassembled, it will make no difference between such work and blasting.. i can go and take a look at what solution they use.

Originally Posted by gdawg20001

I recently called a local dealership in NJ to check prices on the intake cleaning and walnut shell blasting and was informed that the service is no longer offered.

They stated that BMW had came out with a new way of cleaning the valves through a chemical process that the car burned off. They said this service was $150 and may need to be repeated multiple times depending on the buildup.

I asked the rep which service he preferred or thought did the best job and he said he hasn't actually been able to visually inspect any cars after the chemical process so he couldn't comment either way.

What do you guys think about this?
Should I give it a try or look for a dealership who still performs the walnut shell blasting?

I'm not convinced this chemical service would be as effective and with no visual inspection to confirm we are basically left with how the car "feels" for results...

[secretsquirrel]

Originally Posted by stressdoc

Got my intake system blasted a month ago. Fantastic results, great price to boot. For anyone in Missouri or close states with >50k miles I would jump on this opportunity.

Did you get it done as preventive maintenance or were you attempting to correct an engine issue (such as rougher than a "new car" idle). Do you notice a
difference?

[slowSwede]

Originally Posted by Todd135i

I recently experimented with walnut blasting, chemical and soda blasting. Soda blasting was by far the best of the 3, in my opinion.

I'm planning on doing a write-up when I get some time. I also made a plate to keep everything in the port so the engine stays clean.

Soda blasting seems lika a good way after reading about it, cheap as well.
I guess I'll have to buy some and try it.

[Todd135i]

Originally Posted by slowSwede

Soda blasting seems lika a good way after reading about it, cheap as well.
I guess I'll have to buy some and try it.

I bought my blasted at harbor freight. The lexan plate I made has a hole for my shop vac and another for the soda blaster nozzle. So it's sucking out the junk as I rotate the nozzle around. The walnut blaster nozzle can't reach where my soda blasted can.

[smellfish]

Originally Posted by Juiced46

What you read is wrong and a myth from people that do not understand how meth works and they are just assuming this because they are spraying a liquid into the intake


Meth has a flashpoint of around 50-60* F, by the time it hits the back of the valves it has already been vaporized, it is not in liquid form by that time. Its not going to clean jack shit

Tell you what, to further prove my point. I will offer a valve cleaning service to anyone in the CT area that has been running meth religiously and has never had a valve cleaning done, but the car needs to have some miles on it. I will offer it at a discounted rate from what I usually charge and I will take pics of what the intake valves look like after running meth. I will guarantee, they will not be clean and there will be a shit ton of build up on it.

How about 78k with no prior cleaning and nearly 10k miles of running M1?

[MilehighM3]

Originally Posted by smellfish

How about 78k with no prior cleaning and nearly 10k miles of running M1?

Yours will have a ton of build up. That's for sure...

[Laid Black 335i]

Does anyone know what the part # is for the intake manifold gasket(s)?

[The Ghost]

Originally Posted by rader1

I do intake port cleaning on large bore diesels at work almost every week and I can honestly say that diesel fuel and a pressure washer works GREAT. I don't think it's a viable option on the N54 due to not being able to close the valves on all the cylinders at the same time but it does work.

You can do a cylinder at a time (or any of the cylinders at TDC). You soak them in diesel and powerwash with water? How long do you soak them?

[Blubaron79]

I am getting my intakes cleaned with chemical cleaner tomorrow. Car gets dropped off tonight. I'll let you know if or how it works.

They are also doing in for free. :-)

[georgelb]

I had mine done yesterday, with walnut media. I'm not sure what grain he used, but it was done by Thread Killer here on the boards, so you could message him and ask. The before picture is at 83k miles with no prior cleaning, aside from about 3 cans of sea foam.

When I took it in the idle was pretty bumpy; and now it is just stupid solid...you can't even really tell the car is running.

Here's a couple of pictures he shot for me (click for full-size.)

[335(EX)(EYE)]

blast it

[335(EX)(EYE)]

the above job is EXCELLENT