What's the ONE best internal engine mod?
- TeK9iNe
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Re: What's the ONE best internal engine mod?
28 Feb 2011 13:43
Sprockets and chain. Change up the gear ratio to do anything you like, without touching the motor 


Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors

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- larrycavan
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Re: What's the ONE best internal engine mod?
28 Feb 2011 14:58 - 28 Feb 2011 15:01
Please.... tell me you already planned on replacing the cam chain and rollers as a given before you even considered any performance options
Anyway I told you to in your build thread...it's there....go look :laugh:
If the crank is a kz1000 crank and it's not twisted, you're not likely to twist with a 1075 street motor. If you're putting a slick on it, that's another matter entirely
If you want to weld it and be done with it, call Pearson and arrange to have them do it. They just did J crank for me. Nice people, good work, fair price, good sense of humor, reasonable turn around time. I'm giving them a 10 out of 10
They put a real weld on the pins, not some tack job like I've seen other places advertise....
As long as you put everything in the bottom end together with solid components, adding the 1075 kit makes good sense. Later on if you have some money, you can get the breathing needs taken care of.
Get the valves out of the head, DO NOT clean anything in the chambers or the valves. Post up good photos of the valve seats & valves. A rebuild won't mean much if the valve job is toast.
NOTE:
Jim's starting work for me on Monday and he needs a head to practice on ...:laugh: JUST KIDDING. He drinks so much Mountain Dew he could probably cut ports with a cutting bit and his bare hands :woohoo: And...he wanted all the Bon-Bons he could eat for a sign on bonus....Imagine that :silly:

If the crank is a kz1000 crank and it's not twisted, you're not likely to twist with a 1075 street motor. If you're putting a slick on it, that's another matter entirely

If you want to weld it and be done with it, call Pearson and arrange to have them do it. They just did J crank for me. Nice people, good work, fair price, good sense of humor, reasonable turn around time. I'm giving them a 10 out of 10

They put a real weld on the pins, not some tack job like I've seen other places advertise....
As long as you put everything in the bottom end together with solid components, adding the 1075 kit makes good sense. Later on if you have some money, you can get the breathing needs taken care of.
Get the valves out of the head, DO NOT clean anything in the chambers or the valves. Post up good photos of the valve seats & valves. A rebuild won't mean much if the valve job is toast.
NOTE:
Jim's starting work for me on Monday and he needs a head to practice on ...:laugh: JUST KIDDING. He drinks so much Mountain Dew he could probably cut ports with a cutting bit and his bare hands :woohoo: And...he wanted all the Bon-Bons he could eat for a sign on bonus....Imagine that :silly:
Last edit: 28 Feb 2011 15:01 by larrycavan.
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- Nelson
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Re: What's the ONE best internal engine mod?
28 Feb 2011 18:44
oh good, thanks for telling me about the John Deere stuff, that will help a lot with my build. :huh: 
Yes Larry "Please.... tell me you already planned on replacing the cam chain and rollers as a given before you even considered any performance options"
That's part of my definition of making it reliable first and performance second.

Yes Larry "Please.... tell me you already planned on replacing the cam chain and rollers as a given before you even considered any performance options"
That's part of my definition of making it reliable first and performance second.
Restoring and customizing a KZ1000. Click here to read about it.
Plated KTM, DR650, KZ1000, Former MC mechanic (eons ago). 40 yrs. of dirt and street.
Plated KTM, DR650, KZ1000, Former MC mechanic (eons ago). 40 yrs. of dirt and street.
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- Nelson
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Re: What's the ONE best internal engine mod?
28 Feb 2011 18:48
By the way... I spent a lot of time on here a couple yrs ago talking about carb upgrades and MANY people recommended the BS34s as a inexpensive boost. Now you guy are saying the opposite! How fickle the internet can be... I'm well aware they are very pedestrian carbs with the CV and all... however for the price (free) I'm happy with the results. Beats the heck out of mortgaging the house to buy those fancy flat slide racer-boy carbs.
Restoring and customizing a KZ1000. Click here to read about it.
Plated KTM, DR650, KZ1000, Former MC mechanic (eons ago). 40 yrs. of dirt and street.
Plated KTM, DR650, KZ1000, Former MC mechanic (eons ago). 40 yrs. of dirt and street.
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- larrycavan
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Re: What's the ONE best internal engine mod?
01 Mar 2011 04:26 - 01 Mar 2011 04:36
Wipe up or down? ....there ya go.... battle that one boys :woohoo:
Give me RS34's, VM 29s, CRS29's, CRS33's Stock 28's ...hell it don't really matter if they're BS34s .... bring me the bike and I'll make any of them work on a 1075cc KZ motor...
But whatever you do, wear shorts because I can tell you first hand that zipping skin is painful
There once was a man from Nantucket,
Who soaked his old carbs in a bucket,
The bike wouldn't run,
He said this is no fun,
Tossed out the carbs and said "---- --"
Give me RS34's, VM 29s, CRS29's, CRS33's Stock 28's ...hell it don't really matter if they're BS34s .... bring me the bike and I'll make any of them work on a 1075cc KZ motor...
But whatever you do, wear shorts because I can tell you first hand that zipping skin is painful

There once was a man from Nantucket,
Who soaked his old carbs in a bucket,
The bike wouldn't run,
He said this is no fun,
Tossed out the carbs and said "---- --"

Last edit: 01 Mar 2011 04:36 by larrycavan.
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- baldy110
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Re: What's the ONE best internal engine mod?
01 Mar 2011 13:50
Chrome plated muffler bearing, yeah thats it.
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- TexasKZ
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Re: What's the ONE best internal engine mod?
01 Mar 2011 17:09
A set of SU carbs.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
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- larrycavan
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Re: What's the ONE best internal engine mod?
01 Mar 2011 17:18
trianglelaguna wrote:
Well YEA...if you ride like old people have sex :woohoo:
take a good condition 900 or 1015 engine and if all is in good shape do the 1045 and do the couple hundred in a new timing and rollers...
then later clean up some ports maybe..then later if needed get a race lap on the valves and new guides ect....
or better yet
get a good condition 900 or 1015 and run it for 35 yrs without any problems.....
oh wait that wont impress my internet buddies...oh well :huh:
Well YEA...if you ride like old people have sex :woohoo:
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- purls
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Re: What's the ONE best internal engine mod?
01 Mar 2011 17:20
baldy110 wrote:
ha ha ha
Chrome plated muffler bearing, yeah thats it.
ha ha ha
1983 KZ750 Spectre
1978 KZ650B2A
1978 KZ650B2A
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- kawman14733
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- Ktm181
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Re: What's the ONE best internal engine mod?
02 Mar 2011 15:38
the BIGGEST BORE you can afford! OH, AND a Larry C cylinder head!
Mine rips! (1075 + CRE head)
Kt
Mine rips! (1075 + CRE head)
Kt
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- Stu Pidasole
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