KZ440 exhaust, pod filters, and jetting

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24 Sep 2023 18:42 #889730 by nickmckay
KZ440 exhaust, pod filters, and jetting was created by nickmckay
Picked up an 82' kz440 for cheap about a month ago and just had the carbs sinked up fixed a vacuum leak. runs great now with 20900 miles on the odo.. i'm thinking about getting pod flters and an exhaust just wanted to ask for advice beforehand in here. And also what jet kits and exhausts if any are best.

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24 Sep 2023 19:41 #889731 by Street Fighter LTD
Replied by Street Fighter LTD on topic KZ440 exhaust, pod filters, and jetting
Hi Nick 
Welcome to KZRider 
 We can be a big help to you and admission is free
BUT   you must make your next post a introduction in our new member section .
 And please read the post   New members please read.
Without the proper 2nd post  your account will be in limbo
Dave
 


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
The following user(s) said Thank You: Wookie58

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25 Sep 2023 11:21 #889752 by Nerdy
Replied by Nerdy on topic KZ440 exhaust, pod filters, and jetting

Picked up an 82' kz440 for cheap about a month ago and just had the carbs sinked up fixed a vacuum leak. runs great now with 20900 miles on the odo.. i'm thinking about getting pod flters and an exhaust just wanted to ask for advice beforehand in here. And also what jet kits and exhausts if any are best.
 

This question has been asked and answered A LOT. Search the forums and you'll find some of the other discussions.

But the short version is unless you are very, very experienced in carb tuning, the stock CV carbs will never run properly with pods.

1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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25 Sep 2023 13:37 #889755 by nickmckay
Replied by nickmckay on topic KZ440 exhaust, pod filters, and jetting
I'm in good relations with a nearby shop that specializes on older carberated bikes and I feel fairly confident about their carb tuning ability. So if I was to continue with this, what jet kits would you guys recommend using because I've seen some people say either 650 or 750 jet kit works I cant recall, but would that be better than trying to find a 440 kit? And does anyone know if the kz440 ltd has removable-ish baffles (was thinking about drilling them out) or if I should just get a whole new system.

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25 Sep 2023 16:26 #889758 by F64
Replied by F64 on topic KZ440 exhaust, pod filters, and jetting
Pulling the baffles on a 440 is not fun.
They are welded in.
Just get a new system.

81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

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25 Sep 2023 18:01 #889762 by nickmckay
Replied by nickmckay on topic KZ440 exhaust, pod filters, and jetting
Another question.. If i go with just an exhaust, would rejetting be necessary or just a tune?

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25 Sep 2023 19:55 - 25 Sep 2023 19:57 #889764 by TexasKZ
Replied by TexasKZ on topic KZ440 exhaust, pod filters, and jetting
That depends on the exhaust system and how much back pressure it has, how well it scavenges, and such. You may need only to raise the needles with washers, or maybe just a slightly bigger main jet. I don’t think Dynojet makes kits for the 440 any more, so I reckon you will be buying individual jets from Jets R Us or some similar company. I would trust only the carb manufacturer’s parts (Mikuni or Keihin, I don’t remember which), Dynojet, Jets R Us, or Keyster. Many of the others are junk and would drive you mad trying to get them tuned. If you really want to do this, and you trust the local shop, why not just let them do it?

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Last edit: 25 Sep 2023 19:57 by TexasKZ.

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26 Sep 2023 10:59 #889793 by nickmckay
Replied by nickmckay on topic KZ440 exhaust, pod filters, and jetting
I talked with the shop and was told to order the parts and he'll install (its an older british guy so I'm guessing it's easier for him if I just get the parts?). As for the exhaust, not sure about it yet been looking, just not sure what I want to go with yet.

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26 Sep 2023 11:15 #889795 by Nessism
Replied by Nessism on topic KZ440 exhaust, pod filters, and jetting
Whatever you do, don't buy those junk china pods that cost next to nothing.  Get real K&N.  They are the gold standard in pods.  

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