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Thinking about getting VM34/6, need info
- Limitlesstruth
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I currently have VM29 smoothbores and a gravity fed petcock (the standard one) I have K&N oval pods (not sure if this is prudent information or not).
So I suppose my questions are as follows:
1. Which of the two is probably better for the bike; the VM34's or the VM36's?
2. What am I going to need to consider other than question 1, and just simply getting the set? Such as, it is guaranteed that I will need to intake manifolds and clamps etc.?
3. Is there any reason to avoid them or any general voices of concern or suggestion in regards to carbs for a bored KZ1000?
This is the little bit of info I am working with so far: www.redlinecycle.com/VM34-36%20Conversion.html
Thanks in advance!
1979 KZ1000 ltd.
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- Nebr_Rex
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Limitlesstruth wrote: I currently have a 1979 KZ1000 with a bored engine (sad issue is I'm not sure the size of the bore, the idiots who rebuilt my engine left me the dark about a few things) I believe it is at least around 1100cc's now as supposedly when I got the bike it was 1075cc or so and then when I had to get it rebuilt it was bored again.
I currently have VM29 smoothbores and a gravity fed petcock (the standard one) I have K&N oval pods (not sure if this is prudent information or not).
So I suppose my questions are as follows:
1. Which of the two is probably better for the bike; the VM34's or the VM36's?
2. What am I going to need to consider other than question 1, and just simply getting the set? Such as, it is guaranteed that I will need to intake manifolds and clamps etc.?
3. Is there any reason to avoid them or any general voices of concern or suggestion in regards to carbs for a bored KZ1000?
This is the little bit of info I am working with so far: www.redlinecycle.com/VM34-36%20Conversion.html
Thanks in advance!
I think you should learn more about your engine and read all the information on that web page.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected
www.dotheton.com/forum/index.php?topic=39120.0
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- Limitlesstruth
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It says that petcock replacement is recommended but not always necessary, also that the vm36 is meant for bikes "1135cc engines and larger with more radical cams and head work". What does this mean exactly? That it will be no different than vm34s or that it won't really work unless the engine is bored out that far and has higher end cams and such?
Also I have a wisco bore kit, that is all the guys who rebuilt my engine let on, I suppose I can contact them and inquire about more info...
I guess I'll just completely repost this question later when I have more information and I am closer to actually making the purchase or just talk to the guy at Redline about it.
1979 KZ1000 ltd.
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- baldy110
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- zed1015
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You will need major head work and cams at least to need anything near that size.
I have vm32mm smoothies with high comp 1100cc, manzano race head, o's stainless valves, race cams and the VM32's are plenty big enough ( 170mph big enough )in fact there's no real difference to the 26's i bored out to 30mm i had fitted previous.
You want the smallest carb possible matched to your engine spec to keep good throttle response and smooth running throughout the rev range.
Just fitting big carbs won't make your bike faster but will ruin your bottom end throttle response and fueling.
Go spend your money on some head work and street cams.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
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- Limitlesstruth
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I've just been looking over different parts and different custom bikes and took a notice of them without much knowledge, I suppose I will just save myself that money and put it elsewhere on the bike as Zed has suggested.
If down the road I have a more built up engine at least I'll know that if I did decide to get new carbs that the Mikuni VM34rs carbs are probably the way to go.
I still need to look into higher output coils I believe, or at least would like to.
Thanks for the information and everything!
1979 KZ1000 ltd.
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- zed1015
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However if you are on points it's hardly worth fitting them without DYNA 'S' pick-ups too.
Fit the whole package and you'll have sparks like an arc welder that will light a bucket of piss.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-
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- Jeff.Saunders
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I would assume 1075cc is the bore on your bike. If that is the case, the VM29's are the best choice - even with a flowed head and moderate lift cams.
www.z1enterprises.com
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- Limitlesstruth
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That is from the website I listed whose information I was working with; he says its "UP TO 1197cc".
Your guess is just about as good as mine, I'm working under the assumption of 1105cc cause it was supposedly bored when I bought it then bored again when I had to rebuild the engine cause the head was cracked. However I'm working on such little information about it that I'm not sure if both were actually done. I'm planning on sticking with the VM29s for now. I don't ever use the full power of the bike or even go for rides of much length either.
Thanks for the reply though.
1979 KZ1000 ltd.
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