+Vincent Ramella that's bloody kind of you Vincent, thank you. Andy

Cheers Mike

James McCreadie g’day mate. I used to own a ‘05 955i Daytona so I understand where you’re coming from, great noise from the triples. I had a Megacycle exhaust with standard filter and it ran and sounded great. Drilling more holes would be my approach but the issue is that once you drill too many it is hard to un-drill them. Thanks for watching, Andy

Thanks Andy, I'll do that. I really enjoyed watching the basket case vids, there's a big difference in watching and learning from a time served engineer than an enthusiast, like the exhaust bracket you made, excellent and not to mention the lengths you went to solve all that bikes issues. I can't tell you how much I enjoyed that build.. hoping you get another project because it was a pleasure.

Hi Andy. Just to follow up about the Daytona. I drilled 4 equal holes opposite the existing ones and cut an inch off the dbkiller . Sorted. Running fab.

Not really, it’s a complex issue and depends on the engine size and target RPMs, among other considerations. Maybe a read of this will help www.centuryperformance.com/exhaust-header-tube-sizing-and-length.html and I would advise that you do some targeted research specific to your bike. See if you can contact a manufacturer and talk to them, they would have done the r&d already. Or even someone who sells something similar and measure the length of the primary tubes.

I can't answer that mate, I don't know what jets are factory and I have never played with a KZ1000. Have you tried the forums? I would recommend reading the spark plugs to check the current condition, i.e. are you actually running lean?

Ok thanks for getting back to me..yur KZfaq vids are great..now here's the story about this bike..bought it off neighbor for two hundred American dollars..the bike sat in storage for a year or two and upon me buying it the number one carb was siezed up..took the carbs off had a garage clean em up..and a couple pilot jets and air fuel screws were broke and needed drilled out..got the carbs back put em on and the bike fired right up..upon running temp the bike started popping and deceleration backfire..then I looked at the carbs and gas is coming out the bottom of carbs not float drain..it turns out that the mechanic had to scrounge up some old pilot jets and air screws..took carbs off again and the main jet is still a 107.5 with a pilot of 15..now my service manual calls for a 105 main and a 15 pilot stock before air cones and 4n1exhaust..now I read that with the new volume of air due to the cones I will have tu go up two jet sizes..I ordered new jets and gaskets and will be picking em up tomorrow..unfortunately it's 6degrees out..way cold..I haven't had a chance to Wrk on the bike..as soon as it gets above freezing I will put it all together..I hope this helps.the jets I ordered are a 107.5main and a 17.5 pilot..I don't know of any kz forums..yur help would greatly be appreciated..thx

Define "steetable" Murray. Is it loud? Of course it is. Is it louder or more obnoxious than a lot of V-twin shot gun set-ups? No.

Yeah, sorry Andy, that was ambiguous, wasn’t it!! One further query........baffle out versus baffle in. Much difference??

You're assuming I've ever run it with the baffle in lol. In all seriousness mate, I wouldn't know. I've never tried.

Andy's Motorcycle Obsessions Hahaha. Spoken (written) like a true hoon!! I’ll keep investigating. Thanks anyway.

G'day mate. I purchased it 2nd hand along with a box of other bits and pieces from an on-line auction site. the muffler was purchased from Motorcycle Exhaust Professionals in Queensland.

I was thinking the same thing. Did you ever get an explanation on that?

+James Robert I've seen photos of your bike on Facebook, I think. I agree with you about the XS11 pipes, they provide a good broad power spread. Got to love PO's, thanks for watching, Andy

'PO's' either means 'previous owner' or 'pissed off'. Probably both in most cases. I'd like to find some mufflers that match the pipes and try to weld some mounting brackets on. Not sure if the crossover pipe would be possible to do or whether it would help get the same performance spread as the stock set.

+James Robert there is a man in Germany who makes stainless steel reproductions

Hi mate, it shouldn't be an issue. Most of the work has been done before the muffler. The catalytic converter will kill decibels so I'm not surprised that you are disappointed with a slip on.

it won't hurt the engine right ?

That is a question for Yamaha mate, it would be irresponsible of me to suggest otherwise.

+truenorge10 G'day mate, thanks for tuning in. My advice would be to join the forums, US, Australia and U.K. Also their Facebook pages. There is a wealth of knowledge and a passion to support anyone wanting to get these great classics back on the road. Your motivation is commendable and your dad would be proud of you. If you have any specific questions don't be afraid to ask, if I can't answer them I should be able to point you in the right direction. Also look us up on Facebook, you can message me from the page. Andy

Why? He'd just want to fill it with MIG wire lol

No I did not. I didn’t even think about it. My mind is fixated with older bikes.

@@ANDY5 Ain't none of us as young as we used to be. 😁

Hi Paul, yeah that would be really cool. I used a pick of a Taz on a bike as a thumbnail when I posted about a ride I did with my daughter a while back. Not too sure how I'd go fighting Warner Brothers though. Thanks mate.

Yes it was...honest

@@ANDY5 No sir.

+David Rogers yes the noodle would disappear rapidly as the air FLOWS into the low pressure area. Thanks for tuning in, Andy

+Allan Byrne hi Allan, I'm sorry if I didn't explain myself very well. The point I was trying to make is that an engine doesn't work like a vacuum pump. Air isn't sucked into the cylinder but actually flows in at whatever atmospheric pressure is present at that elevation. That's why elevation has an impact, lower pressure = less air and therefore less oxygen available for combustion. Andy

I just watched this back and I am struggling to see what your point is? I said twice that air is introduced by pressure differential. I also can't find the "Aussie slant" you're referring to, it is just basic international engineering principles. I think I detect a hint of xenophobia and I am now doubting that it is me that is creating a cognitive block.

The atmospheric pressure has no bearing on the principle of "suction", that of a medium flowing from a high to low pressure area. To be exact, at a higher altitude the air is just less dense, as there are fewer oxygen molecules present, making breathing difficult. I am trying to design a baffle for my old Honda NV400 and getting information is both difficult and contradictory. I am beginning to think there are as many opinions as there are bikers and that it will be a process of trial and error for me. My one hope is that I can find one, take a look and copy it, but the bike is rare, although the early VT500 is similar.

+Allan Byrne I have been trying to explain that what I am saying is exactly what you are saying , in terms of differential pressure. Copying what others have done is always a good strategy, assuming they got it right. Andy

Sorry mate, I thought you were having a go at me. As I said, delicate balance between flow and velocity, I think that is where the "back pressure" misconception comes into it. You require enough restriction to promote velocity but want to avoid back pressure, it is an engineering fact. It's not that everyone is wrong, it is just that a large number who don't understand fluid dynamics and the principles of flow and pressure have difficulty understanding why you need any restriction at all. Look into Bernoulli's work and study his principles.