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engine re-ring
- fcat5
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28 Dec 2009 07:54 #340938
by fcat5
engine re-ring was created by fcat5
hey all, got a 76 900 and she startin to smoke a little. Gettin ready to tear the bike down and have the head reworked,new guides seals and valve job. So the question is can i replace just the rings in the engine to help seal it up a little?? I know the cylinders and all that are prolly worn a bit but will it help at all?? I only ride her bout 2000 miles a year so if it would help a little id do it.
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- 9am53
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- homebrew, and some bbq
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28 Dec 2009 08:02 #340939
by 9am53
'84 GPz900r
'71 CB350
s289.photobucket.com/albums/ll231/9am53/
Replied by 9am53 on topic engine re-ring
I think whenever you re-ring you need to hone the cylinders. I did this myself, and honing your cylinders costs less than new rings cost by far, so I think it's a good idea.
'84 GPz900r
'71 CB350
s289.photobucket.com/albums/ll231/9am53/
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- Old Man Rock
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28 Dec 2009 08:25 #340943
by Old Man Rock
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
Replied by Old Man Rock on topic engine re-ring
Head/valve job most definitely....
Re-ring.... what's your compression and leak-down measurements?
BTW... New OEM seals, don't use after market seals for they just don't seem to hold up as well... Now I'm sure there are some out there but the ones I used originally (full engine seal and gasket kit) didn't hold up...
Babbitts.com were the cheapest I could find @ $9 each.... Pay the little now to save yourself from having to go back in later... When a head gasket is $50, it's worth the extra $$$...
OMR
Re-ring.... what's your compression and leak-down measurements?
BTW... New OEM seals, don't use after market seals for they just don't seem to hold up as well... Now I'm sure there are some out there but the ones I used originally (full engine seal and gasket kit) didn't hold up...
Babbitts.com were the cheapest I could find @ $9 each.... Pay the little now to save yourself from having to go back in later... When a head gasket is $50, it's worth the extra $$$...
OMR
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- Kawboy74
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28 Dec 2009 08:42 #340947
by Kawboy74
1974 Z1A As original as I could get it
'88 ZX750R braided lines, mostly original
KZ1000 project on the bench
Burlington,Ontario,Canada
Replied by Kawboy74 on topic engine re-ring
Hey,OMR, where are you getting a head gasket for that price? Dealer price here is 130 for both pieces! I think Z1 is about 25 for both pieces albeit aftermarket! David
1974 Z1A As original as I could get it
'88 ZX750R braided lines, mostly original
KZ1000 project on the bench
Burlington,Ontario,Canada
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- Old Man Rock
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28 Dec 2009 08:54 #340949
by Old Man Rock
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
Replied by Old Man Rock on topic engine re-ring
@ Z1 of course....
I converted over to the single gasket but they do have the two piece as well, pretty much the same price... $49.76
The gasket I received is a Wiseco gasket... Same as what came in my Wiseco cylinder/piston kit for my 1015cc upgrade.
www.z1enterprises.com/detail.aspx?ID=2901
OMR
I converted over to the single gasket but they do have the two piece as well, pretty much the same price... $49.76
The gasket I received is a Wiseco gasket... Same as what came in my Wiseco cylinder/piston kit for my 1015cc upgrade.
www.z1enterprises.com/detail.aspx?ID=2901
OMR
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- BSKZ650
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28 Dec 2009 08:56 #340950
by BSKZ650
77 kz650, owned for over 25 years
77 ltd1000, current rider
76 kz900, just waiting
73 z1,, gonna restore this one
piglet, leggero harley davidson
SR, Ride captian, S.E.Texas Patriot Guard Riders.. AKA KawaBob
Replied by BSKZ650 on topic engine re-ring
since you are spending the money to get the head done, mic the bores to make sure 1, the bores are std and 2, to see if the cyl will take a rering.
you do need to hone the cyl, to break the glaze and put the propper cross hatch pattern in so the rings will seat properly
you do need to hone the cyl, to break the glaze and put the propper cross hatch pattern in so the rings will seat properly
77 kz650, owned for over 25 years
77 ltd1000, current rider
76 kz900, just waiting
73 z1,, gonna restore this one
piglet, leggero harley davidson
SR, Ride captian, S.E.Texas Patriot Guard Riders.. AKA KawaBob
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- fcat5
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28 Dec 2009 11:48 - 28 Dec 2009 11:50 #340968
by fcat5
Replied by fcat5 on topic engine re-ring
Yes i will most definately be honing the cylinders. The bore is standard, i just got done tearing it down,its a little slow in the auto dealership where i work lol. What should the compression be at or around. Im sure its down a little i can just tell by the way it kicks over,ive owned her for a long while and know how it USED to feel!! Man id just do 1015 kit but really dont want to ya know. Well anyways guess cant check compression now anyways lol.
Last edit: 28 Dec 2009 11:50 by fcat5.
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- Old Man Rock
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28 Dec 2009 12:28 #340972
by Old Man Rock
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
Replied by Old Man Rock on topic engine re-ring
120 lbs/sq inch is OEM stock KZ900 spec.
100-120 is acceptable but you'd be on the down swing in performance & longevity....
On a new engine/head build, you'll see ~ 140 lbs/sq inch.
100-120 is acceptable but you'd be on the down swing in performance & longevity....
On a new engine/head build, you'll see ~ 140 lbs/sq inch.
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- Old Man Rock
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28 Dec 2009 12:54 #340973
by Old Man Rock
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
Replied by Old Man Rock on topic engine re-ring
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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