OzVMX Forum
Marque Remarks => Kawasaki => Topic started by: jimson on September 26, 2009, 07:41:11 pm
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G'day viewers I've been offered a F6 125 for $200 its rough but going and its seems all there would these be any good for dirt track pre75. :-\ jimson
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Hi,
I would say the F6 could be made to go pretty hard, rotary disc induction lends it self to some tweaking,
If your not interested I may be.
Cheers
Noel
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Shocker, just stick it in a box and send it to me....... ;)
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Lozza how much $ would you have to through at the engine to make it move. Noel I'll let you know whats happening after this monday :-\ jimson
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Without looking inside it, I couldn't say exactly. Really down to port/pipe/ignition/carb replacment and changing the disc timing.If you have a suitable ignition and carb that's 2 things you don't need. ;D A lot depends on the gearbox to.One thing to check is if it has a complete cast iron cylinder some models have and some have an iron liner in an aluminium cylinder, the ali barrels are the ones to have.Just send me a pm if you or Noel don't want it.
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an F6 was my 1st bike , loved it to bits , eventually blew it up ( dropped the skirt off the piston ) . I was told when I bought it that it had been taken out to 175cc - it went very well
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Lozza what would be a good ignition to replace the old one :-\ jimson
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Any 80 or 125 would be OK
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G'day viewers just wondering do I need to keep the oil feed on the F6 or can I just pre mix the fuel in the fuel tank ? jimson
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Jimson, if it's a Superlube model then yes and if it's the Injectolube model no. Pretty sure the injectolube is on the larger models and you have the Superlube but get a more definate answer from someone in the know ;)
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Thanks Doc I'll keep the oil lube on the bike.I was looking through my stash of bits today and saw a pair of KL forks and triple tree and maybe a 21 front wheel if this all comes together I might put some rego on the kwaka and use it for a practise bike in the scrub ;D .jimson
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Jimson,
If the KL forks don't fit it'd be worth considering late 70's 32/33mm 185 Suz forks, triples & front wheel. IIRC the triples have 25mm stem like F6.
They could do w a longer swingarm & wheelbase too. Again, 185 Suz should fit straight in. Or MT125 Honda at a pinch. I'm in the process of doing it to my bros F7. Some 185 Suz wheels had alloy rims too.
F7 175 top-end should fit straight on too if you want more beans
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beware though as the stock piston(and the TKJR) will go BANG (the pin boss will disintergrate) when you go over 26 RWHP for any length of time.
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Loz,
What RWHP can you pull out of the 125 F6 engine/barrell?
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do the little kawa's have a bottom end issue also whereby the rods tend to fly apart at high rpm? I swear someone mentioned this once when I was planning on doing some mods to my KH125 :-\
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Hmmm well we got 18HP on a true reading dyno...........with the rear brake jammed on. Went to 23HP with that fixed, (owner is a mechanic too ;D) and jetting miles out. With some dialing in at the track it started to really haul arse. Then the piston cried 'enough' so we were looking north of 25rwhp.That's also with a shit pipe (about 200mm to short) a shit straight line (fixed curve) ignition and very conservative disc timing. With those fixed hmmm I shouldn't say but probably well over 30HP if you used a decent piston.
Dos we used (as did Nitram many moons ago when he owned the said KH125) KT100 S and J kart rods with a Thompson big end cage , nothing ever looked like failing.
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Thats out of the 5sp F6 engine, not the 6sp KH engine ???
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If it's a disc valve, 56 X 50mm bore/stroke and has an aluminium not a cast iron cylinder it will make that sort of HP. That's in a road race engine to but I could use the disc to pump the bottom end up.The KH 6 speed would probably drop in as a KX box goes into the KH no problems.
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Trouble is, where talking about the earlier long-stroke F6 engine here. 52x58.8, rotary v/v, 5sp box (w wide ratios). Very different engine.
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dunno about the f6 but the ke125 is a alloy barrel with steel sleeve
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the F6 has the cast iron barrel and is quite different from the KX, KH and KE motor, near all parts will interchange on these models but precious little interchanges with the early F6 ;)
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l will buy it right now.
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what do you make of this one JC or Dot? looks to me to be pre KX based on an F6, obviously in Japan..wish I could get a better picture :-\
(http://nvoqdw.bay.livefilestore.com/y1pCqS1i5hv7SsW2obbYPVZ7cmZdfJQbqzZZolnfvlNFUFZ9N1IHqVP9H33lpNoCY1wFqEs4T15YrInSBamzujs1Qxt3-B1aGfa/kawa125.JPG)
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Yeh Doc, I've pondered over that one too. I think it's a KAH 125, which as you probably know was the works designation before SR. Hard to see if its double or single downtube frame but it looks single w side exh port. Probably its the fore-runner to the KX125. I think the shot is from 73. I doubt very much its F6 based.
Interesting tho that one of my Kaw books lists an F6 available only in Jap w considerably closer gear ratios than std F6 - perhaps a home-market MX model.
Did you ever sort out that 125 barrel that you had a few years ago Doc which you tho't may have been an MX barrel for an F6 or earlier?