Starting to buy parts for my motor rebuild.
- CruisingRam
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Starting to buy parts for my motor rebuild.
28 May 2015 20:32
Starting to start rebuilding my ol Z (1975 B1) starting this month- yeah me- haven't ridden it in 7 years now! It will be about a year long process in my estimation. That being said- I am going to detail and build the engine first, forks second, rear suspension and so on. Frame has already been gusseted.
So- the idea for the engine build- I want HP! street pliable HP, however. I have everything just about hardware wise for EFI. Full EFI system off a GPZ 1100.
I have a full kerker 4-1 exhaust and Motogp pipe already.
So this discussion is all motor at this point. I am going to run J fully ported heads and Larry C suggested cams.
Two big things I need to consider- CC size and back cut gears.
What is a good, streetable size motor these days? I lunched the old piston pretty bad, so some case boring doesn't bother me.
How much do we need back cut gears on these things? I ride pretty hard on twisty roads, and do a lot of shifting.
So- the idea for the engine build- I want HP! street pliable HP, however. I have everything just about hardware wise for EFI. Full EFI system off a GPZ 1100.
I have a full kerker 4-1 exhaust and Motogp pipe already.
So this discussion is all motor at this point. I am going to run J fully ported heads and Larry C suggested cams.
Two big things I need to consider- CC size and back cut gears.
What is a good, streetable size motor these days? I lunched the old piston pretty bad, so some case boring doesn't bother me.
How much do we need back cut gears on these things? I ride pretty hard on twisty roads, and do a lot of shifting.
1975 Z1 B 900- soon to be heavily modded
Pahoa, Hawaii is my new hom
I am working hard to save up the shipping money to get my shop opened here in Hawaii
I hate electrical stuff.
Pahoa, Hawaii is my new hom
I am working hard to save up the shipping money to get my shop opened here in Hawaii
I hate electrical stuff.
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- daveo
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Re: Starting to buy parts for my motor rebuild.
29 May 2015 16:07
What J-head are you planning to use?
I have an 84 ZN1100 (bathtub) head on my 82 KZ1100, with 84 GPZ cams, and am very-pleased with the setup. So much so, I've purchased a second lo-mile ZN head to either sit on, modify...or sell.
I have an 84 ZN1100 (bathtub) head on my 82 KZ1100, with 84 GPZ cams, and am very-pleased with the setup. So much so, I've purchased a second lo-mile ZN head to either sit on, modify...or sell.

1982 KZ1100-A2
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- DFIGPZ
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Re: Starting to buy parts for my motor rebuild.
30 May 2015 14:07
Rebuild / Weld crank, backcut the trans, rebuild the clutch hub, bore to 1075, use KZ1000 block, Z1 or KZ1000 head, new HD cam chain, all new Lisca rollers , Port work by Larry C new stainless valves , Bronze Guides, Viton Seals, HD Valve springs to match cams, Sell the DFI System { yes I love Them and know how to make them work } better off buying a good set of carbs, HD Cyl studs , billet tensioner Max out credit card.
1984 750 Turbo
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- SWest
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Re: Starting to buy parts for my motor rebuild.
30 May 2015 16:30
YEAH :woohoo:
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- PaintWorkz
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Re: Starting to buy parts for my motor rebuild.
30 May 2015 18:39
And a windage tray and hinged oilpan gate.............
www.paintworkz.com
84 Gpz900 street
77 KZ 1325 Turbo Dragbike barnfind
77 1135 KZ900 A5
79 CBX Pro Stock project
82 CBX Nostalgia Pro Stock
78 Z1R-TC AMA & ECTA LSR record holder
96 KZ1000 Police Superbike project
68 750 Enfield Brat project
82 750 Nourish Triumph LSR
Lake Havasu City, AZ
84 Gpz900 street
77 KZ 1325 Turbo Dragbike barnfind
77 1135 KZ900 A5
79 CBX Pro Stock project
82 CBX Nostalgia Pro Stock
78 Z1R-TC AMA & ECTA LSR record holder
96 KZ1000 Police Superbike project
68 750 Enfield Brat project
82 750 Nourish Triumph LSR
Lake Havasu City, AZ
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- SWest
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Re: Starting to buy parts for my motor rebuild.
30 May 2015 18:45
Ad lots of tires. :whistle:
Steve
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- Old Man Rock
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Re: Starting to buy parts for my motor rebuild.
31 May 2015 06:50
Hawaiian Islands (bro lives on Kauai) mid 80's temps but extremely humid thus possibly an oil cooler and electric fan configuration.
Island isn't that big, considerable so stop & go traffic equates to over heating on a pumped up engine... Just a thought...
While you're in the engine, new clutch plates (fiber & steel) and springs...
Pictures a must through the build...
OMR
Island isn't that big, considerable so stop & go traffic equates to over heating on a pumped up engine... Just a thought...
While you're in the engine, new clutch plates (fiber & steel) and springs...
Pictures a must through the build...
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
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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- SWest
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Re: Starting to buy parts for my motor rebuild.
31 May 2015 07:58
Pics, need pics. 
Steve

Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- Puffin
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Re: Starting to buy parts for my motor rebuild.
01 Jun 2015 05:31
Ram I guess larry would be the best man to ask allthough he maybe biased towards emptying your wallet :laugh: HP does seem to have a close connection to how fat your wallet is :woohoo: I actually pm`ed him with some similar questions a couple of weeks back but have not had a response from the man yet
KZ1000 J Long Term Owner
KZ1100
KZ1100 Spectre project
KZ1100
KZ1100 Spectre project
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- tomsbadkz
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Re: Starting to buy parts for my motor rebuild.
01 Jun 2015 05:48
Larry did an amazing job on my ZN1100 head for my kz1000 bottom end motor. His rate are very reasonable for the quality of work you get. He is as knowledgeable as anyone you will meet. It's the old saying, "You get what you pay for." Larry can be hard to get a hold of because he is always busy with his work. I have personally met him and sat and talked about KZ's for a couple hours. VERY intelligent man. He's the guy if you want it done right and he's not trying to empty your "fat" wallet.
1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
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- tomsbadkz
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Re: Starting to buy parts for my motor rebuild.
01 Jun 2015 05:56
Here is the head he did for me.
1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
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