Stroppy Old Tart, or the story of a Triumph Bonneville

[Hooli]

A few pics from the place fixing the head etc, it looks a hell of a lot better just being clean.



The invoice for what they are doing lists all this -

Strip & clean all parts
Weld & fettle exhaust ports
Exhaust stubs repair
Change valve guides
Cut 3 angle valve seats
Four new valves
Lap valves in
New valve springs
Replace small end bushes & ream to size
Spot down bolt holes and rocker box tops
Weld and chamfer chamber
Fit 4 x 1/4" helicoils

[brandersnatch]

That’s a proper mess. £950 sounds a lot but you’ll be enjoying the bike long after you’ve forgotten the money.

[Hooli]

That’s a proper mess. £950 sounds a lot but you’ll be enjoying the bike long after you’ve forgotten the money.

Indeed. It'd be a bit cheaper to get a new head I think, but it'd never seem right to me. I don't like changing big bits if I can avoid it & by getting it all fixed it should last a good few years.

[Hooli]

Work progresses.

[Hooli]

Further update.

[Hooli]

Further update for the day, they've fitted new exhaust valve seats as when recut they were too deep. That wasn't an expected bit, but not a great surprise on 44 year old head.

[Hooli]

More updates

[PhilA]

It's nice to see an engineering so taking on something like this, most would either make a right pigs ear of it because as a big job it gets given to the apprentice to save on hours.
Looks like they know what they're doing, at least. Hopefully that new material won't fail in the same way again.

[Hooli]

They've been doing it for years, so I hope they do. It's a couple of old blokes in a workshop from what I can tell & they'll do anything.

[xtriple]

I had to buy a new head for mine after an 'engineering company' skimmed it on the piss. Was the easier and probably, the only solution.