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Post by Oliver31 on Jun 20, 2011 12:01:35 GMT 1
Any suggestions on a starting point for my 4lo carb settings:
Spec is as follows:
Mick abbey tune
ram air filters
v force reeds
skimmed head
kennys pipes
lightened flywheel
I have put 280 mains in but hoping someone may have a similar set up
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Post by 1260dave on Jun 20, 2011 12:24:08 GMT 1
280/290 is a good starting point, i've got simlar spec but with pwk 28's
any chance you could post a picture of micks pipes, and what does he charge for them
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Post by Oliver31 on Jun 21, 2011 15:31:17 GMT 1
Just spoke to Mick Abbey on the phone he was indicating possibly 390 to 400 main jets. this seems a big jump from std 220's.
any advice please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Post by 1260dave on Jun 21, 2011 15:34:39 GMT 1
have you tried it on 280s
400's sound way over
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Post by Oliver31 on Jun 21, 2011 15:52:04 GMT 1
Went for a brief ride out on Sunday it seemed okay, but want to make sure I get the best out of the tune. Before I spoke to Mick today I spoke to Bob Farnham who said that the 280's were well below what should be in there and suggested 390-400 mains.
Mick was saying with similar spec on ypvs with powerjet carbs they are running late 300 mains.
Just seems big size to me .
I am just concerned and need a starting point otherwise I will need share in Mikuni Jets.
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Post by midlifecrisisrd on Jun 21, 2011 21:50:35 GMT 1
280/290 is a good starting point, i've got simlar spec but with pwk 28's any chance you could post a picture of micks pipes, and what does he charge for them Know it's a PV but kenny's pipes. These are the abbey design ones that peak at 10500rpm, he does ones that peak at 9200 if you don't want it to rev that high.  Awesome performance, he is on here so pm him for a price. Think his user is tsa (two stroke addicts) Steve |
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Post by Oliver31 on Jun 22, 2011 15:29:11 GMT 1
Pick of Kennys pipes on my 4lo under recent heading 4lo swap for trick ypvs
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Post by 1260dave on Jun 22, 2011 17:03:57 GMT 1
they are nice looking pipes
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dave32
L plate rider.
Posts: 19
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Post by dave32 on Jun 22, 2011 19:27:04 GMT 1
I used to run 360's on stock carbs,modded airbox,ported barrels and short can microns so 380 isnt way too big for a starting point.
Just wack some 380's in, needle on 4th clip(from top),airscrew half a turn out and work from there,reducing the MJ a size at a time while keeping an eye on the plugs.
Would also retard the timing to 1.5btdc and run B9EGV plugs.
Better to start off safe.
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