Engineers in Auckland for a dead ol Trumphy

[Voltaire]

I pulled down a 68 Triumph Daytona motor...that I bought as box of bits on TM last year....
The top end had nipped up.
I was expecting to see a timing side bush.....but it had a ball race ...and roller on the drive.
The big ends are + 10 and look a bit past it.
Who knows a good place to take it in Auckland for a regrind?
could it live again....

[Motu]

The bush was on the early ones - if you have points in the timing cover you should have a ball on the timing side....unless someone like me has been there mixing things up.What sort of breather does it have...hollow cams and a valve on the inlet cam,or a breather hose on the chaincase? Don't mix the 2 systems either.

It's just a plain bearing crank like any car,any engine shop with a crank grinder can do the job.I had a good relationship with Carr Engine Services for many years,everything they did for me was up to scratch.Max Headroom will have different views of the present owner,but should vouch for the workmanship.

[Voltaire]

according to the serial number its a 68 and pre ball bearing....it has the timed cam breather....but someone has drilled a 3/8" ( can't use metrics here) thru to the bottom of the primary case and done a bit of dremelling.
Why can't you use both systems....?
How thick is the hardening as Max says BMW cranks don't grind well?
Also its got alloy rods with no bush...sort of a brazilian for rods...

got any bits in the shed Paul?

[Motu]

Maybe it's a change over model...or someone like me has been at play.I converted a couple of early model engines to the later breather by drilling holes in the crankcase and screwing a later breather tube to the chaincase.Early engines had a hollow inlet cam so it could breath down the middle to the timed breather...later engines with the chaincase breather had solid cams.I once fitted solid cams into a timed breather case,and had an engine that leaked like a Triumph.Later models had no little end bush,same as the 650...I don't know what year they changed.

It really sounds like a late model engine,and swapping a right case was common (for me anyway).On the 2 engines I built,I didn't want to damage the T100C cases with my breather mod,so used 3TA left cases.There should be a year casting mark in every casting,the year before it's model year usually - check all your casting dates to see if they match.

Hardening....I thought Triumph used softening on engine parts?

[Voltaire]

The drive side number has been drilled out by the breather mod, but the timing side is a 71 as is the nice alloy rods with no bush.
I need to find a bettter cylinder block as its got 40 thou pistons and they look very scuffed.
was there a major change around 66/67 where bits stopped being interchangable?
I'll do some more cleaning and measuring and make a list.....
meanwhile back to the Pre unit motor.....

[Motu]

No,most of the bits swap around,the timing side bush was the major change.The gearbox teeth changed in pitch too,but you could even run both sorts of cogs in the same box.The reason was to get the close 1st and 2nd of the 350 to go with the close 3rd and 4th of the 500.Hollow cams,exhaust cam with ign advance....all swap around.I think 40 thou was max,but they could be resleeved maybe....just that thin spigot into the crankcase to worry about.

[Dodgyiti]

Weird, no one can offer a place to take it.
Not even someone suggesting this place:http://wikimapia.org/12543432/Waitak...ansfer-Station

Got you an appointment with the Doctor, that should get you sorted

[Voltaire]

I've put the Daytona back on the shelf as its a distraction.
Got the T110 motor and box out of the frame, going to see that Nourish crank again soon

[classic zed]

For any kind of engine machining go to Paramount Engineering, 9 forge Rd, Silverdale. 09-426 4373

They do all my car and bike engine work