Hey guys, Chasing a pair of good condition camshafts for my spare top end, my spare camshafts are really badly pitted and want to rebuild it Cheers! Dan
If nothing turns up there is a fix which I've used. There's a eutectic overlay which is applied to cam lobes by gas welding. I got a part stick from a local cam grinder. Once the pits are overfilled it can be smoothed down to match the good surface then polished. It work hardens and i've had no probs with the cams I've repaired
Hmm that would sound like a job for an engine builders or something to me maybe? I wouldn't be able to weld myself haha
Hey Greg, i might see if I can give this a go My housemate can weld, not sure if you need to be a decent welder though haha? Don't suppose you have any more info on the process?
Here's the pitting on my spare pair I have read forums which say a little pitting is ok, but i guess it can only get worse the more you use it? Personally i don't think these are worth using in their current state
I wouldn't use them like that as they will chip off do more damage. Get some weld on them and ground off.
Just like bronze welding. Big soft flame. The filler rod melts at a lower temp than bronze Not a lot of heat needed - but the cam lobe needs to be clean. There's probably a flux made for the job but I used normal bronze welding powdered flux. i haven't looked for a source of the rod but it's a Eutectic product so someone will carry it.
I'll do some research On a side note, have a look at the state of these cam lobes removed from the $100 engine i bought... I think someone has attacked them with a disc grinder
YOWSER - that's some really crude work right there For the pitting on you other cams you could try waggott cams, they're in northern NSW, I suppose you call it Northern Rivers, just a wee bit South West of Ballina - Coraki NSW https://waggottcams.com.au/contact/
Beauty thanks for that! There's a place in Brisbane too which seems to be highly rated, but then I saw one negative review and they had proper butchered someones cams lol
Waggott Cams used to be one of the best back in the Olden Days... they werebased in Greenacre in Sydney. I had a cam from a 1600 XFlow Cotina GT re-worked there to the ppoint where I had to fly cut the pistons for clearance... Also had a Datsun 1600 cam from them, both cams were very well done (welded and re-ground) with good documantation etc. Not sure if it is still family owned now but they used to be well respected.... Their "1/2" Race cam was the go to for Holden Red motors in the day.
I only know of Waggott cams because a few years ago I googled cam re-grinders/re-grinding - their name came up constantly as a recommendation, they also run a race engine building business, I think they must be doing something right
The Waggot name has been around for many years. They do some pretty fine engineering. https://www.streetmachine.com.au/features/1952-holden-fx-48-215-with-a-waggott-twin-cam
That's seriously impressive work making a cylinder head and I bet it's priceless, no amount of money is going to get one by the tone of that article
