Jetting for 4 to 1

hotdogg
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Jetting for 4 to 1

10 Apr 2014 19:29

#628629

Hey guys. Just wondering is rejetting necessary with a 4 to 1 exhaust

1982 kz750 spectre

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hotdogg
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Re: Jetting for 4 to 1

10 Apr 2014 19:31

#628630

Oh sorry. It's a 1982 kz750 spectre

1982 kz750 spectre

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Grumpy Ole Artist
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Re: Jetting for 4 to 1

11 Apr 2014 06:07

#628653

Not an expert, but yes, you most likely will have to...Call Jeff at Z1...he recommended the carb parts to go with my new 4-1, and he seems to have nailed it!

1978 KZ650 B2
Former rides...1976 CB360T, 1985 Shadow 700, 1985 GPZ750Turbo

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baldy110
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Re: Jetting for 4 to 1

11 Apr 2014 08:21

#628667

Yes.

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Mcdroid
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Re: Jetting for 4 to 1

11 Apr 2014 09:26

#628677

If you also go individual air-pods...then absolutely...if you retain your stock airbox, possibly not.

Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

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loudhvx
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Re: Jetting for 4 to 1

11 Apr 2014 10:29 - 11 Apr 2014 10:31

#628688

Mcdroid wrote: If you also go individual air-pods...then absolutely...if you retain your stock airbox, possibly not.

+1

On some quieter Kerkers, I've gotten by with stock jetting just fine, (but that was on 550's, not 750's).

1981 KZ550 D1 gpz.
Kz550 valve train warning.
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Last edit: 11 Apr 2014 10:31 by loudhvx.

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slayer61
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Re: Jetting for 4 to 1

11 Apr 2014 10:32

#628691

Have we been through this before?

Don't be ridiculous! It's only a flesh wound!

[strike]Wife's little bike... 1984 GPZ 550 Kerker and DynaJet stage I kit[/strike]
Wife's BIG bike......[strike] 1981 GPZ 1100 Kerker and [strike]factory FI[/strike] Mikuni RS34s W/ K&N pods[/strike] SOLD

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hotdogg
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Re: Jetting for 4 to 1

13 Apr 2014 07:24

#628856

Thanks for the info to all the guys who are trying to help a person learn something...slayer if you dont like the topic don't click on it

1982 kz750 spectre

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mtkawboy
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Re: Jetting for 4 to 1

15 Apr 2014 09:09

#629108

Ive run the stock jetting on my GPZ750 with an RC Engineering 4-1 pipe for 32 years and it still runs great but it has 34 mm Cv carbs on it unlike yours {I think}

78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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bountyhunter
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Re: Jetting for 4 to 1

15 Apr 2014 13:12 - 15 Apr 2014 13:13

#629132

hotdogg wrote: Hey guys. Just wondering is rejetting necessary with a 4 to 1 exhaust

Depends on the baffle.

As stated above, changing to pods screws everything up and will require jetting and needle changes.

1979 KZ-750 Twin

Last edit: 15 Apr 2014 13:13 by bountyhunter.

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