- Lochgilphead, Argyll, Scotland
Think I would be wasting my time trying to MIG it? I do not have TIG and was rubbish at it last time I tried almost 40 years ago!
That inlet is 38mm! I was thinking of making the carb adaptor with a smaller bore and adding a spigot with an or ring groove to seal in the bore. The Amal Monobloc 389 I have for it is only 1-5/32" bore.
They have cut down the guide too:
View attachment 295446
And some work on exhaust port too:
View attachment 295447
A few of the engine bolts were drilled for wiring them, so suspect it has been raced at some time in its life.
Cheers, may well take you up on that, am back in the Queen Elizabeth for around a month, will give you a shout when I get out.
They were 'spurgies' where I came from, not that it matters......
That's been properly trashed.. how much of a short turn radius has been left? It looks minimal, in which case any decent gas flow capability has been sacrificed, all to lose even more power with oversized port. I'd be looking to bore it clean and insert a tube, then shape that to match internally (not easy)!
Thanks, had forgotten that name, I have emailed Belzona for advice on what epoxy they recommend for the application. i have a suitable die grinder and burrs.it could be done with belzona epoxy metal stuff i reshaped my over the top polished norton port and textured it when still soft with a carbide burr
mates devimead a65 has d shaped inlet ports done with belzona
think .8 of valve diam of the valve is the port bore , agree that port has to turn gas down into cyl as the old straight port simply lets all the charge escape out the exhaust valve on overlap
no such hassle with electric motors
Not sure this is day 4, have met a Dr Latif and saw a consultant in the hospital last week, a Dr McQuaker - I am in the bone marrow transplant unit, so probably different folk than you. My spinal surgery was by an Irish surgeon, he was very good and has phoned me a few times, I am still chuffed he said they were shocked when they saw me walking the day after surgery as he suspected I would not walk again.who is your consultant
as you know i spent 7 months in there winding up the weegies
Quick response from Belzona:
"The product best suited to this application is Belzona 1511 which has a dry heat resistance of 210o C and a heat distortion temperature of 131o C when cured at 100o C.
The price is £182.56 for a 1Kg unit plus £12.50 carriage. These prices are ex VAT."
A second hand head would be cheaper!
Not sure this is day 4, have met a Dr Latif and saw a consultant in the hospital last week, a Dr McQuaker - I am in the bone marrow transplant unit, so probably different folk than you. My spinal surgery was by an Irish surgeon, he was very good and has phoned me a few times, I am still chuffed he said they were shocked when they saw me walking the day after surgery as he suspected I would not walk again.
Thanks, had forgotten that name, I have emailed Belzona for advice on what epoxy they recommend for the application. i have a suitable die grinder and burrs.
I cannot see the youth of tomorrow getting as much fun tuning electric motors as we did playing with cams, valves, ports, exhausts and ignition timing
Funny what you find stripping old bikes, my Bonnie was pretty standard bar someone has polished the crank for a few hours:aye not to mention endless polishing and getting it spot on then trying something else that totaly didnt work
and spending at least a third of life
in a damp cold shed
we are definitly half daft
Green are near to .001" and what I use, I believe red are thicker and then blue to silver are the thinnest....
I sent my Bonnie crankshaft to a comp called Greenwood cranks donkeys years ago to be balanced and polished. It came back gleaming and the balancing drilling was opposite to the original .