Midrange woes!
#31
09-08-2022 | 06:46 PM
Senior Member
Joined: Dec 2013
Posts: 245
Likes: 11
From: Scotland
Hey Iamhiding thankyou so much for your input and sharing your experience! I was having a wee gander at my timing which was a tooth off after my manual CCT came loose and taking the cam journals off it was snapping bolts left right and centre (maybe not enough oil on the threads last time) and they're broken off in the cylinder head! For f**ks sake. I think its time it went in the bin really, its taken all my money and time and effort and have had little in the way of mechanical victory.
The jets the dyno guy recommended worked a lot better with a pipercross air filter but the flat spot was still there in the higher gears, starting to think its something more sinister like you said.. the shim was a 0.5mm washer at the time of the dyno plus 138 140 140 138 main jets and it was draining a tank in no time
its just not getting enough air but the more i faff the more down the hole it goes! It would be worth the trip to Scotland just to get some pointers in the right direction!
Even with the pilots at 1 turn out the choke was almost redundant on start up, its all such a mess! Would a carb balance be in order?
Taking this thing to a garage would probably be in excess of £800
The jets the dyno guy recommended worked a lot better with a pipercross air filter but the flat spot was still there in the higher gears, starting to think its something more sinister like you said.. the shim was a 0.5mm washer at the time of the dyno plus 138 140 140 138 main jets and it was draining a tank in no time
its just not getting enough air but the more i faff the more down the hole it goes! It would be worth the trip to Scotland just to get some pointers in the right direction!Even with the pilots at 1 turn out the choke was almost redundant on start up, its all such a mess! Would a carb balance be in order?
Taking this thing to a garage would probably be in excess of £800
. possibly just over tightened or overtightened by being done out of sequence, both easily done.. know the feeling all too well with these kinda things and old bikes have a habit of taking you down the hole but where do you call it quits. just wish i had a day to help you put the carbs straight and/or diagnose but cant see it happening. oh yeah £800 and the rest with a garage.
#32
09-09-2022 | 08:54 AM
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Joined: Apr 2022
Posts: 75
Likes: 16
From: Gloucestershire, UK
Mate.. Its comforting knowing someone else knows the pain! The F3 are like an abusive ex you just cant leave alone 
. Ordered some new bolts and got the old heat torch out to remove the old snapped stumps.. lets see how this goes! Could have an engine and headers in Bristol for £125 by next week.
Have you got proper stuff for a set up and cleaning carbs? These ultrasound cleaners are bloody expensive
. Ordered some new bolts and got the old heat torch out to remove the old snapped stumps.. lets see how this goes! Could have an engine and headers in Bristol for £125 by next week. Have you got proper stuff for a set up and cleaning carbs? These ultrasound cleaners are bloody expensive
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