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Post by muddyfox on Oct 7, 2014 14:37:40 GMT 1
hi chaps, whats my options for some more power
81 lc non pv
cheers
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Post by jackjabba on Oct 7, 2014 15:40:56 GMT 1
How much do you want to spend?
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Post by cb250g5 on Oct 7, 2014 16:11:39 GMT 1
1) Put a YPVS engine in it, or
2) Buy a more powerful bike.
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Post by markhoopy on Oct 7, 2014 16:58:15 GMT 1
Turbo  |
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Post by midlifecrisisrd on Oct 7, 2014 17:09:14 GMT 1
Cheapest option is a set of kennys pipes but you will get the most out of fitting a ypvs motor.
Steve
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Post by 4l04ever on Oct 7, 2014 17:37:11 GMT 1
Porting, zeeltronic, TSA pipes will get from from below 40hp to over 50hp.
28mm PWK carbs are worth upto another 2hp.
All the above on a YPVS engine will be another 10hp over the 4L0 engine.
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Post by muddyfox on Oct 7, 2014 17:39:55 GMT 1
so the pv motor is the best option then a big bore stroker kit?
as it stands ive got allspeeds, 31k carbs, reed spacer,
was looking for a bolt on option as my motor is just touching 13k , so low miles for its age!
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Post by steeley on Oct 7, 2014 18:09:40 GMT 1
get a ypvs motor take your lc motor out wrap it up and put it in your shed attic ect.then just have a look on the various big bore threads and see how much you want to spend.oh don't get me wrong I do like this sort of stuff ,but I decided not to go down this road with my tzr350 .hmmmm 2,500 grand may be .no.ah I may be short by a grand and half.they look nice as in tzr bigbores saw one on the iom nice looking machine.
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Post by midlifecrisisrd on Oct 7, 2014 18:25:50 GMT 1
If you were going big bore stroker you would still need a ypvs bottom end to fit it on.
Your allspeeds and carbs will go straight on. All you would need was either a pv controller, cdi and stator or better just to get a full zeel
Steve
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Post by liaminholland on Oct 7, 2014 21:32:05 GMT 1
I would not bother too much, once you start trying to make them go better you tend to get carried away!
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Post by JonW on Oct 7, 2014 23:37:28 GMT 1
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Deleted
Deleted Member
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Post by Deleted on Oct 8, 2014 0:35:03 GMT 1
Kr1s carbs
Banshee racing coils
Kenny pipes
6mm reed spacers
Ignitech ignition
57bhp
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Post by twostrokebrit on Oct 8, 2014 3:56:13 GMT 1
^^^ i would think that the majority of the above comes from the pipes and ignition upgrades.
but it all adds up to a nice 50% increase from a sub 40 base line.
good luck and be sure to post whatever you do.
mark
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Post by muddyfox on Oct 8, 2014 10:43:25 GMT 1
i sure will, im about to post my build thread!
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Post by muddyfox on Oct 8, 2014 10:45:51 GMT 1
Kr1s carbs Banshee racing coils Kenny pipes 6mm reed spacers Ignitech ignition 57bhp im assuming you are running premix, doesnt the kr1s have the oil feed on the boots? i only ask ask have one in my shed, i could steal the carbs, is it a big rejet? cheers |
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Post by JonW on Oct 8, 2014 12:19:28 GMT 1
They do if you fit oil nipples... |
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Post by muttsnuts on Oct 8, 2014 13:15:21 GMT 1
running on pump, I do the mod on the carbs and sorted Mick's for him, his and mine are both 57bhp after developing the ignition map for the 4L0 which doesn't seem to exist, or if it does, no one is prepared to share it that's for sure !
Between us we have done approx 2000 miles on these motor's with no issues, I developed a "bolt on approach/solution" that I can repeat easily to get the bhp figures stated, alot of my work is actually on here in threads
That's on a stock motor as well, no porting, skimming of heads etc, etc, if you PM me I'll be happy to give you the outline of what has been done
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Post by nikfubar on Oct 8, 2014 13:29:38 GMT 1
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Post by markhoopy on Oct 8, 2014 14:03:07 GMT 1
And another one ..  |
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Post by midlifecrisisrd on Oct 10, 2014 12:35:44 GMT 1
Kr1s carbs Banshee racing coils Kenny pipes 6mm reed spacers Ignitech ignition 57bhp im assuming you are running premix, doesnt the kr1s have the oil feed on the boots? i only ask ask have one in my shed, i could steal the carbs, is it a big rejet? cheers As nikfubar says you can get the scottoiler spigots and convert the carbs They also do a universal spigot you bolt through the inlet rubber. I used it for vacuum for the fuel tap but sure you could use for oil. Steve |
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