Welcome, Guest
Username: Password: Remember me
Forgot your password? Forgot your username? Create an account
Forum
Technical Forums
Engine
2-4 crossover style exhaust...
  • Page:
  • 1
  • 2

TOPIC:

2-4 crossover style exhaust... 04 Nov 2015 07:05 #697180

  • PDXDave
  • PDXDave's Avatar Topic Author
  • Offline
  • User
  • Posts: 14
  • Thank you received: 2
Anyone here have any experience with a 4-2 cross over type system?
I'm curious about the sound and performance characteristics compared to a 4-1

Please Log in or Create an account to join the conversation.

Last edit: by PDXDave.

2-4 crossover style exhaust... 04 Nov 2015 07:19 #697184

  • martin_csr
  • martin_csr's Avatar
  • Offline
  • User
  • Posts: 7983
  • Thank you received: 1621
I guess you meant 4-2?

Please Log in or Create an account to join the conversation.

Last edit: by martin_csr.

2-4 crossover style exhaust... 04 Nov 2015 07:32 #697185

  • PDXDave
  • PDXDave's Avatar Topic Author
  • Offline
  • User
  • Posts: 14
  • Thank you received: 2
My bad...
A 4 with 2 mufflers with cylinders 1 and 4 merging into one muffler and cylinders 2 and 3 merging into another.
It's the correct system on a Goose build and I have one coming from Japan, but I was just curious if anyone had any first hand experience with this configuration.

japan.webike.net/products/1523195.html
The following user(s) said Thank You: Dach Savage

Please Log in or Create an account to join the conversation.

Last edit: by PDXDave.

2-4 crossover style exhaust... 04 Nov 2015 12:16 #697222

  • missionkz
  • missionkz's Avatar
  • Offline
  • Sustaining Member
  • Posts: 1622
  • Thank you received: 184
If a factory system, as found on the 77' KZ 1000.... It will make max power and be amazingly quiet! That stock system was a semi-marvel of engeering.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
The following user(s) said Thank You: old_kaw

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 04 Nov 2015 12:30 #697225

  • 650ed
  • 650ed's Avatar
  • Offline
  • User
  • Posts: 15344
  • Thank you received: 2828
Some KZ650 models came with 4>2 cross-over exhaust system. They were rated as having 2hp less than the normal 4>2 system. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 04 Nov 2015 14:01 #697237

  • bountyhunter
  • bountyhunter's Avatar
  • Offline
  • User
  • Posts: 7246
  • Thank you received: 337

PDXDave wrote: Anyone here have any experience with a 4-2 cross over type system?
I'm curious about the sound and performance characteristics compared to a 4-1

Do you mean a 4-2 with a crossover pipe ahead of the mufflers?

If so:

A good 4-1 system will make more HP in the peak power range but probably have a little less power at the low RPM range.

Systems with a crossover pipe generally make more low RPM power which is why stock systems use them.
1979 KZ-750 Twin

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 04 Nov 2015 14:16 #697241

  • 650ed
  • 650ed's Avatar
  • Offline
  • User
  • Posts: 15344
  • Thank you received: 2828
I believe he meant a system where the pipes cross like the KZ650-SR shown below. Ed

Attachment 00003-5.jpg not found

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Attachments:

Please Log in or Create an account to join the conversation.

Last edit: by 650ed.

2-4 crossover style exhaust... 04 Nov 2015 16:13 #697269

  • Nebr_Rex
  • Nebr_Rex's Avatar
  • Offline
  • User
  • Posts: 1890
  • Thank you received: 298
I needed no jetting changes going from a Mac 4/1 to a SR system with the crossover plugged.
And that was on a 750/4.


.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 15 Nov 2015 10:08 #698769

  • jenkrider
  • jenkrider's Avatar
  • Offline
  • User
  • Posts: 78
  • Thank you received: 3
I have a set of Jardine "Double Header" pipes with turnout mufflers. They sound great - good rumble but not too loud. Not sure about performance. I did mine for looks. I had an old crappy rusted out 4 into 1 before going with these, which I bought from someone on KZR. They were pretty ratty but steel wool and time fixed them up nice.

Attachment KIMG0346-2.jpg not found


As far as I know Jardine made similar models for Hondas called the "spaghetti' pipe. That's about all I know.
76' KZ900
00' KLR650
82' XV920 Virago
74' Ironhead Sportster
Attachments:

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 15 Nov 2015 10:22 #698770

  • PDXDave
  • PDXDave's Avatar Topic Author
  • Offline
  • User
  • Posts: 14
  • Thank you received: 2
Mines a PMC and aside from no instructions and incorrectly numbered head pipes, it went together without a hitch. Beautiful build quality and fit.
I can't wait to get her dialed in and hear it.
Attachments:

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 15 Nov 2015 10:22 #698771

  • jenkrider
  • jenkrider's Avatar
  • Offline
  • User
  • Posts: 78
  • Thank you received: 3
That PMC system looks really nice by the way! Costly, but very nice. Goose as in Jim Goose?
76' KZ900
00' KLR650
82' XV920 Virago
74' Ironhead Sportster

Please Log in or Create an account to join the conversation.

2-4 crossover style exhaust... 15 Nov 2015 10:41 #698772

  • PDXDave
  • PDXDave's Avatar Topic Author
  • Offline
  • User
  • Posts: 14
  • Thank you received: 2
Yes sir

Please Log in or Create an account to join the conversation.
  • Page:
  • 1
  • 2
Forum
Technical Forums
Engine
2-4 crossover style exhaust...
Powered by Kunena Forum
PDM Custom Fabrications
Half Evil Customs