SOHC.co.uk Forums > CB350/400
Engine rebuild cost 400
andut:
I would be interested to hear if anyone has any experience with the 54.5mm big bore kits ?
My engine had 54mm Yoshi pistons fitted when i stripped it and measured up on max piston / bore tolerance. Bores were slightly oval and new 54mm rings not available, so I figured the 54.5mm kit was an option when I struggled to find another decent set of barrels. Engine is going back together now, so we'll see what happens, and in the mean time I will keep an eye out for a set of barrels in case I have a drama !
Andy
llessur:
I had a similar issue in that the bike had previously had a Yoshimura 54mm kit and I needed to replace broken rings. In the end I went for a Cruzin Image 54.5 kit pistons / rings/ head gasket for the same price I was going to have to pay for the Yoshimura rings. (Local Engineering shop bored it as necessary) Needed care getting the pistons / rings back in with virtually no chamfer left, but runs a treat now. I don't abuse the engine though. Rest of the bike is standard ie with airbox and original jets.
andut:
That's reassuring - thanks for the feedback !
It will be interesting to see if the added capacity gives a noticable improvement in torque - looking forward to finding some time to get it back together !
Andy
Nurse Julie:
Just catching up on some past threads. To go back to the original question ' how much will it cost', my CB400/4 engine rebuild came in at a tad under £1600 inc parts, labour and all machine work. Now I was very lucky as I only had to pay for parts as Trig did all the machine work for me FOC and mine and his labour cost nothing. But it just proves that a full engine job is in no way a cheap thing to do, especially if there is damage to some of the internals that need repair work as mine did.
mike the bike:
Your rebuild, Julie, needed an awful lot doing. The head welding, new pistons and rings et bloody cetera. My rebuild only cost hundred or so because the cam chain/ primary chain are fairly new. To be realistic; new chains, piston rings,gasket set, paint, the odd bolt where they've been chewed up. I'd say around £400. Spread out over a few weeks and her indoors won't even notice.
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