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g6mow
5th gear
Joined: 01 Apr 2006
Posts: 773
Location: Lancashire, England
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 Posted: Fri Apr 03, 2009 6:05 pm Post subject: |
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| simonh wrote: | | husson73 wrote: | | G6mov, just thought to order a new ship of 250 pistons, seems Dan would be one of regular customer :lol: :lol: :lol: |
:lol: :lol: :lol: |
:thumright: :thumright: :thumright:
:D :D :D :D :D
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dandare
3rd gear
Joined: 25 Oct 2007
Posts: 116
Location: Caerphilly South Wales
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| Posted: Sun May 24, 2009 7:37 pm Post subject: |
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Not my my week end. Got the 250 sprint bike together, battery, fuel, check all wire conections and It will not fire up, Iwill check the coils
tomorow, sould i have power at one side of the coil or not with the ingnison on ?
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simonh
tankin it !!!!
Joined: 25 Oct 2007
Posts: 1323
Location: durham, england
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| Posted: Sun May 24, 2009 10:13 pm Post subject: |
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| only when the points open/close, easier to check there mate |
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scouse
3rd gear
Joined: 24 Nov 2006
Posts: 127
Location: Knottingley, next to Wolfman
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| Posted: Mon May 25, 2009 12:13 am Post subject: |
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| simonh wrote: | cheapest way is 1mm lifters, then get barrel tops lapped back 1mm
then lift the exhaust and drop the inlet somemore. fit 400 carbs and inlets (i can lend you a set if you aint got any) and pipes and filters
set the timing for superhot melty pistons and back off a tadge
pistons are fookall, go for it dan
instead of lapping the barrels you could run with out head gaskets, but it would take forever to seal them and then they will blow straight away. |
if you can find some instant gasket called omnivisk (german) you can use that instead of head gaskets.
clean the heads and barrels torque them down and leave it to set for a few hrs
we used it at collage, I did my 500 heads and I had to prise the heads and barrels apart with a jemmy
really really good stuff
Gary T
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2smoke
1st gear
Joined: 26 Apr 2009
Posts: 25
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| Posted: Tue May 26, 2009 1:04 pm Post subject: Re: Go faster. |
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| dandare wrote: | | I working on a kh250 motor to do some drag racing this year, what are some good mods to make with out spending to much Cash, any info will be worth many beers when we meet up. (yes i know about loosing wieght) :D :lol: |
Hi dan 250s are all about power to weight,loosing 2 stone is =£1000 of tuneing  .
cheap way for more power bore it to maximum over size,set of bellmouths
400 carbs ,set of chambers,polish the heads with solvol ,knife edge the inlets and polish all the ports with dremel.you can still run head gasgets.use shell v power .if you cant afford carbs put big jets in,if you cant afford chambers, chop the first section of the baffels off,loose weight,
and slightly over gear,you loose a bit at initial take off but gain at the end of the drag strip.  |
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dandare
3rd gear
Joined: 25 Oct 2007
Posts: 116
Location: Caerphilly South Wales
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| Posted: Tue Jun 16, 2009 10:25 pm Post subject: |
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well guys I had a cracking time on the 250 it wasn't performing all that well. it would not rev out,  main jets to small but ill change that soon. also still needs more porting. but still had a good time with all the lads. ran a 13.6 on the kh750 with a slipping clutch  best time on the 250 was 17.4 but it will get better. whatch this space
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simonh
tankin it !!!!
Joined: 25 Oct 2007
Posts: 1323
Location: durham, england
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| Posted: Tue Jun 16, 2009 11:53 pm Post subject: |
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| what pipes you running dan? |
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dandare
3rd gear
Joined: 25 Oct 2007
Posts: 116
Location: Caerphilly South Wales
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| Posted: Mon Jun 22, 2009 5:35 pm Post subject: |
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I was running alspeeds, not the best, all ive got. I did swap the ones of my 750 bit more volume and longer seemed crisper.
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dandare
3rd gear
Joined: 25 Oct 2007
Posts: 116
Location: Caerphilly South Wales
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| Posted: Wed Jun 24, 2009 6:21 pm Post subject: Spannies for 250 |
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anydody got a set of spannie that work for my 250 drag bike,
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simonh
tankin it !!!!
Joined: 25 Oct 2007
Posts: 1323
Location: durham, england
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| Posted: Wed Jun 24, 2009 9:08 pm Post subject: |
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you need dencos dan mate
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