Exhaust clean air block off plates.
- otakar
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Exhaust clean air block off plates.
19 Aug 2010 15:51
I am thinking of installing a set of Block-off plates on the valve cover. Anyone know if the reads stay in place under these pates? Or do the reads get removed and some new seal comes with the plates.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- Motor Head
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Re: Exhaust clean air block off plates.
19 Aug 2010 15:59
I can't see what the difference would be. Once blocked off there is no reed function anyway, so me I would pull the reeds out, if you had the head off you could even plug the port and smooth it out for less turbulence. Also you gain a small amount of gap from the valve cover to the coils etc when you go back to service the top end, and possibly better heat transfer for better head cooling?
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
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- DFIGPZ
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Re: Exhaust clean air block off plates.
19 Aug 2010 18:19
otakar wrote:
Reeds stay in place the REED cage has rubber seal on to seal it to the valve cover recess.I am thinking of installing a set of Block-off plates on the valve cover. Anyone know if the reads stay in place under these pates? Or do the reads get removed and some new seal comes with the plates.
1984 750 Turbo
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- otakar
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Re: Exhaust clean air block off plates.
19 Aug 2010 18:56
DFIGPZ wrote:
That is exactly what I wanted to know.
otakar wrote:Reeds stay in place the REED cage has rubber seal on to seal it to the valve cover recess.I am thinking of installing a set of Block-off plates on the valve cover. Anyone know if the reads stay in place under these pates? Or do the reads get removed and some new seal comes with the plates.
That is exactly what I wanted to know.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- MFolks
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Re: Exhaust clean air block off plates.
19 Aug 2010 19:21
If you order the TPO parts # TPOHRSMOG kit you will get a kit composing of the two(2) plates, eight(
button head metric cap screws, a selection of vinyl caps for blocking the hoses and instructions
www.tpoparts.com is their website.

www.tpoparts.com is their website.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- Patton
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Re: Exhaust clean air block off plates.
19 Aug 2010 21:11 - 19 Aug 2010 21:12
TPO installation instructions show removing the reed valve, but not replacing it.
Depending on application, would imagine the kits include gaskets of some fashion if needed to seal between the plates and valve cover.
Maybe I overlooked a section on the site dealing with gaskets.
Good Fortune!
[Click on image to enlarge view.]
Depending on application, would imagine the kits include gaskets of some fashion if needed to seal between the plates and valve cover.
Maybe I overlooked a section on the site dealing with gaskets.
Good Fortune!

[Click on image to enlarge view.]
1973 Z1
KZ900 LTD
KZ900 LTD
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Last edit: 19 Aug 2010 21:12 by Patton.
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- otakar
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Re: Exhaust clean air block off plates.
12 Oct 2010 05:16 - 12 Oct 2010 05:21
No eBay APP ID and/or Cert ID defined in Kunena configurationI don't trust a set of sheet aluminum parts, not using a gasket, and besides I went on the websight and they do not show it for our bikes. What seals the ports from each other if the valve and gasket is removed. In that case you have to block off the individual holes in the head or the cover. But I did find a set of these which look much better and are MUCH MUCH cheaper than the APE parts. If this was a performance part than I would not mind having an advertisement on them but they are not and I do not believe in paying big bucks for a part and than advertising for the company at the same time. These plates are built the same way and they are $20 cheaper then the ones with the advertisement on them. You also have a choice of the KZ or GPZ logo.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 12 Oct 2010 05:21 by otakar.
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