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"C" on top of O/S Pistons

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"C" on top of O/S Pistons 30 Sep 2008 19:19 #239565

  • kano
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i always thought the "c" and arrow was pointing to the carb position so piston is the right way round.

am i wrong?

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"C" on top of O/S Pistons 01 Oct 2008 06:09 #239614

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C designates the piston type and the arrow points to the exhaust side,(forward)
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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02 Oct 2008 13:44 #239831

  • CoreyClough
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mark1122 wrote:

if Hastings does not pan out try Total seal. They sow 1mm., (.0394"),and 1.2mm. (.0472")
www.totalseal.com/SearchByBore.aspx


Total Seal said, "If Wiseco doesn't have it or can't get it, then no one has it."
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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"C" on top of O/S Pistons 10 Oct 2008 04:51 #241073

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Sorry it took so long to re-post, had to find the paperwork. Anyway, totalseal was the company that came up with the rings for my 20+ year old 1075 kit.
current bike:
1982 GPZ-750
past bikes:
1978 Z1-R
1982 KZ-550, 615 kit, cams, head-work
1978 GS-1000 drag bike (younger days fun)

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"C" on top of O/S Pistons 10 Oct 2008 05:26 #241081

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Thanks for the reply. Do you remember if your pistons had the "C" Stamped on them like mine do? Would be nice to just freshen the cylinders and replace the rings on this 5,199 mile engine.

Side Note
I notice in your signature that you have a KZ550 with a 615 kit installed, and turn 13's in the 1/4 mile? The GPz550 bone stock, will do 12.7's at 104 mph. Your's should go faster than that, unless you're carrying more girth.

OK back to the topic at hand.
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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"C" on top of O/S Pistons 12 Oct 2008 01:11 #241391

  • School Teacher
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can the pistons have a wider grove put on them and use a thicker ring?
1976 kz900 in parts but will be going some day soon
1980 kz1000G1
1976 kz900 parts bike
1979 kz1000 shaftie parts bike
1978 kz1000 33mm smoothies 1075 kit
Troutdale Oregon USA

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"C" on top of O/S Pistons 12 Oct 2008 16:13 #241479

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The XC Rings are thicker, and the pistons already have the wider gap for them. It's the XA Rings that are only available, and the ring groove is smaller. Nice try though.
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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13 Oct 2008 07:20 #241556

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School Teacher wrote:

can the pistons have a wider grove put on them and use a thicker ring?

Yes MTC will recut the grooves for about $200.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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"C" on top of O/S Pistons 13 Oct 2008 07:46 #241560

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Humm, stock, it wouldn't run faster than 14.50's. Probably the gearing I suppose, since it would pull through redline in top gear at 135 mph by my buddies speedo. Anyway, back to the subject at hand.
current bike:
1982 GPZ-750
past bikes:
1978 Z1-R
1982 KZ-550, 615 kit, cams, head-work
1978 GS-1000 drag bike (younger days fun)

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13 Oct 2008 07:53 #241562

  • CoreyClough
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mark1122 wrote:

School Teacher wrote:

can the pistons have a wider grove put on them and use a thicker ring?

Yes MTC will recut the grooves for about $200.

Who is MTC???

You can go larger with the grooves, but not the other way around.
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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13 Oct 2008 17:35 #241651

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MTC makes pistons and race products.:
www.mtceng.com/index.php?page=shop.brows...virtuemart&Itemid=60

B)
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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"C" on top of O/S Pistons 13 Oct 2008 19:35 #241680

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Thanks Mark. B) Added that link to my favorites.
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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