Joining the 4-4 club

[Houtman_imp]

I was very happy with the little time it took to get my pipes from Australia to our house in NC .

 

[PowerDubs_imp]

Tracking shows out for delivery.

 

[Houtman_imp]

When I received the pipes I used a dremel tool to take the burs from the inside where they cut slots , probably not needed as pipes slide together well but it "feels' better "

 

[PowerDubs_imp]

Yes- I’m not expecting nice welds or quality control.

This is what it is- an old guy making pipes by hand. Probably not tig- and definitely not a stack of dimes. I’d be very surprised if he purged the pipes.

But, since I can use a center stand and he put on larger O2 bungs for me- there was no other option.


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[Houtman_imp]

Powerdubs , you might be surprised at the good quality of these pipes , I am very happy with them for that price.

 

[PowerDubs_imp]

As mentioned- to keep the center stand and have him accommodate the larger O2 bungs- I am happy.

That being said, people should understand what they are getting.

I have not seen a Moriwaki exhaust in real life, but I am sure the build quality is excellent. The staintune muffler and arrow header I have are excellent.

I have owned a LOT of custom exhausts, intake manifolds, suspension components on many bikes, cars, quads, jet ski, turbo kits, etc.

Here are examples of quality welds-

What this guy does is quick ‘tooth paste’ welds of questionable quality and then took a grinder to them before chroming to make it look a little less sloppy.

Also the bends are not mandrel, so you can clearly see the creasing.

Will it work? Sure. Does it look poorly done- yes, to anyone who knows what they are looking at.

Are the welds as strong, or will last as long? Doubtful.

There are a couple spots I wonder if he even got a complete weld. Who knows if the temperature was correct- and as I said earlier, I very much doubt he purged the pipes.

As a few years pass- the welds could crack, the joints can rust. Especially the seams... just like the old
mufflers in the 70’s.

They will still look and sound cool- just use these pictures as reference to know what you are buying-

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[Charlie Bravo_imp]

My fave exhaust is 4-2. I had a couple of early '90s Nighthawk 750. One had 4-2. I removed the end plate, pulled out the snorters and cut two inches off each one and reinstalled. It sounded sweet! The next one had 4-1, with a giant Yoshi can that I rewrapped four times to get it's sound down to reasonable levels. My current '13 CB is 4-1, and it sounds like a hair dryer, even after drilling the end cap.

 

[PowerDubs_imp]

Yea- looks wise, a 4-2 megaphone would be the match for my bike’s style.


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[Houtman_imp]

I had my 2014 with the Pipe Master 4 into 4 out again this morning , I am VERY happy with the way it looks , sounds and runs ! A lot of positive comments from riders I met on the BRP .

 

[PowerDubs_imp]

Parts needed to install should arrive before the weekend. Undecided when I am going to tear the bike apart again.


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[E11even_Hunnit]

Good to see you finally pulled the trigger on the 4-4 you been wanting, PD

Can't wait to see it installed and all dialed in with the Dynojet modules

 

[PowerDubs_imp]

Good to see you finally pulled the trigger on the 4-4 you been wanting, PD

Can't wait to see it installed and all dialed in with the Dynojet modules

Installed. In process of dialing in.

Taking a bit of work- to my knowledge I am the first to tune dual channel cyl 1&2 separate from cyl 3&4.

 

[Cormanus]

It's unlikely to provide any comfort, Dubs, but I think you're the first to do it too.

 

[1973cb750]

I been really thinking of swapping to the dlx headers you think 1 o2 could be used for the oem and the other for autotune ? Probably have to find a sensor that fits with the right ohm range to work with the pcv

 

[PowerDubs_imp]

The power commander simply uses a standard Bosch WBO2 sensor.

No need to run the stock sensor- the autotune sensor will take car of everything.

In fact- I think even a 100% stock bike, even on the day it is bought- benefits from a o2 sensor bypass plug for improved rideability.

The bungs for the WBO2 are bigger- so you need to weld on a new one (or two).

 

[1973cb750]

The power commander simply uses a standard Bosch WBO2 sensor.

No need to run the stock sensor- the autotune sensor will take car of everything.

In fact- I think even a 100% stock bike, even on the day it is bought- benefits from a o2 sensor bypass plug for improved rideability.

The bungs for the WBO2 are bigger- so you need to weld on a new one (or two).

I have a bypass plug just never installed it

 

[PowerDubs_imp]

Pop it in- it makes an improvement you will notice in very low speed, low throttle application- such as pulling into a driveway, parking lot stuff- etc.

 

[PowerDubs_imp]

Looking back, I guess I never put any pictures here-

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[Cormanus]

Thank you Dubs. Been waiting for those pics. They look great.

 

[PowerDubs_imp]

It's an interesting look...and I can see why it never became mainstream.

Many of my friends- several of which have owned motorcycles but don't know the history behind this have seen the bike and raised an eyebrow...

So yea..odd look, added weight, probably less power (will be tested)- but YES it sounds cool!!!