[Turbo329]

Can someone tell me what the actual weight savings is by swapping the stock mid-pipe with the Catalytic Converter with the MV Agusta Mid-pipe without the Cat.

Some adds say that the weight savings is significant.

What type of power increase is expected if any?

Thanks

 

[The_castle]

Hi Turbo329 I have the both pipes at home. Before my wife comes home I'll put them on the kitchen scales and get back to you.
As for power increase, I have no stats on that, yet. This may take a while but I'll post any dyno results here.

 

[lee]

You better sit down before reading Dave's weights.

 

[Randarosa]

You better sit down before reading Dave's weights.

:jerkoff: :shitfan:

 

[Turbo329]

Thanks guys. Looking forward to the feedback.

If I think it's worth it, I may purchase the mid-pipe this week.

 

[suryad]

Its not just the midpipes. The organ pipes are quite heavy as well. I think that piece IIRC is heavier than the mid pipe.

 

[The_castle]

Steel link pipe with catalytic converter: 1.5 kg (3.3 pounds)
Titanium link pipe: 480 grams (1.06 pounds)
Saving 1.02 kg or 2.24 pounds.

I'm sure the real advantage will be seen in removing the restrictive catalytic converter.
The titanium link pipe sure does look pretty too.

 

[lee]

With regards to the O2 sensor bung welding on the other thread as you can see there's a bung on the midpipe for it. You can plug your sensor into it. May have to extend the wiring but that will have no effect on the signal as far as resistance goes. It's a heated five wire sensor. Fancy fancy.

Attn: Cag. An example of welding a bung to Ti. Hah! You lose.

 

[Turbo329]

Thanks guys.

Don't they make a stainless mid-pipe without the Cat?

How much does that one weigh.

 

[esq'z me]

With regards to the O2 sensor bung welding on the other thread as you can see there's a bung on the midpipe for it. You can plug your sensor into it. May have to extend the wiring but that will have no effect on the signal as far as resistance goes. It's a heated five wire sensor. Fancy fancy.

Attn: Cag. An example of welding a bung to Ti. Hah! You lose.

Lee, that is the bung for the Exhaust Gas Analyzer probe when doing tune-ups (present on all MVs).....o2 sensor won't fit in it.

Of course you can weld Ti.....just have to know how..obviously, since they weld the pipes together in the first place.

 

[CAG]

I think the frost bite from sitting naked on his Tambo has affected his reading comprehension. I never said it was not possible to weld titanium to steel. What I said was you can't weld titanium to steel the way you normally weld steel to itself.

MEANING, LEE, that you need to use a special process (an atmosphere of argon on both sides of the weld) not just on one side like steel.

After checking with your welder guy, you found out how he does it. He uses option 2.

Usually when CAG posts he knows what the fuck he is talking about.

Not always, but usually.

 

[The_castle]

Thanks guys.

Don't they make a stainless mid-pipe without the Cat?

How much does that one weigh.

Yes, they do make a stainlees mid pipe without a catalytic converter. I'm sure that there are several sellers of these in the US.
I do know that Fast by Ferracci have them listed on their website.

 

[Turbo329]

Yes, they do make a stainlees mid pipe without a catalytic converter. I'm sure that there are several sellers of these in the US.
I do know that Fast by Ferracci have them listed on their website.

Thanks to all for the feedback.

I'm getting the itch to do something with the exhaust and don't quite want to part with $5,000 for a full Ti system so I want something to hold me over.

My stock exhaust is starting to turn into this nasty rust colored piece of kit.

 

[lee]

That probe sure as hell looks like a five wire lambda sensor to me. The one on Dave's pipe I mean. Weld shmeld, I give up. Cag you are of course right. You're always right. I should have known better than to question you.

 

[CAG]

Ah, not always, my friend.

Despite my trying to get to 4,000 posts, notice I have posted NOTHING in the "I need a girlfriend thread."

 

[The_castle]

I've ordered an inch round rod of titanium that will be machined and tapped to accept the standard lambda sensor. This will be welded to the titanium link pipe by a specialist welder.
As much as I would like to have this sorted sooner rather than later, I quite like engineering challenges like this.

And Bubba....please don't give me suggestions for short cuts. I know you didn't take any when you built the horse barn / entertainment emporium / Lewdogs new home on your property. :naughty:

 

[CAG]

I wonder if the sensor uses a standard size thread or if it is a custom size and pitch?

 

[Randarosa]

Saving 1.02 kg or 2.24 pounds.

Dahamn Dave, you can loose that much weight taking a dump after a big meal.nthecan:

As for the titanium looking good, I agree, but remember you're riding a F4 which is normally clothed in a diaper anyway, so what's the point? :jerkoff:

 

[lizzardo]

My bathroom scale indicated two pounds saved switching from the one piece header/midpipe/cat to the header/catless titanium midpipe combination.

The price difference between the Ti midpipe and the steel one was $100 when I got mine. The weight difference between the two is primarily in the wallet; however, as mentioned in the sister thread to this one, the titanium is damn sexy.

Back to the original question: I don't think that either the weight or power difference is that significant. Once I got the "race" ECU and a Powercommander, I saw a bit more power, but significant? Since I'm not racing, it's only significant when sitting around with friends over a few pints.

 

[The_castle]

I wonder if the sensor uses a standard size thread or if it is a custom size and pitch?

Now you are getting technical Carl.
It's 18mm and 1.5 pitch.
Here is a picture of the work in progress.