1956 350 crankshaft re assembly

Helpful information and requests for assitance and advice
Locked
Catman
Posts: 6
Joined: Mon Oct 12, 2015 11:49 pm
Location: CHESHIRE UK

1956 350 crankshaft re assembly

Post by Catman »

I have my 1956 16MS 350 crankshaft dismantled and new big end assembly plus new drive / timing side axles ready to go but I am having second thoughts about assembling it myself without the special tool recommended to line up the timing side axle to maintain accurate valve timing. I don't see how the timing side axle position can be accurately set without the setting tool.
Is this tool available anywhere to buy - or is there anybody able to re assemble the crank for me to save any headaches ! At the proper rate of course !
Eric
E Hindley
Catman
Posts: 6
Joined: Mon Oct 12, 2015 11:49 pm
Location: CHESHIRE UK

Re: 1956 350 crankshaft re assembly

Post by Catman »

Try a simpler question just referring to timing side axle !
E Hindley
User avatar
ajscomboman
Member
Posts: 3963
Joined: Mon Jan 01, 1990 12:00 am
Location: HAMPSHIRE UK

Re: 1956 350 crankshaft re assembly

Post by ajscomboman »

Don't know of where to purchase a tool but a simple answer is , send it to any of the specialists who advertise in the back of the Jampot mag.
Catman
Posts: 6
Joined: Mon Oct 12, 2015 11:49 pm
Location: CHESHIRE UK

Re: 1956 350 crankshaft re assembly

Post by Catman »

Prefer to do the job myself - you never become a specialist without experience !
I have been building high speed 12/16 cylinder diesels for almost 50 years so I figured out how to sort the problem myself - just looked for a bit of guidance from somebody with the relevant experience thinking no point in re inventing the wheel !
E Hindley
Mick D
Posts: 2886
Joined: Mon Mar 24, 2014 5:44 pm
Location: Aberdeenshire

Re: 1956 350 crankshaft re assembly

Post by Mick D »

Hi

I don't see a special tool mentioned in the workshop manual, just a pencil line to aid alignment. If you have a press it should be an easy task.

Getting the assembled crank shaft trued will be a little more challenging, but a means to hold between centres and a DTI will do at a push.

Regards Mick
56G80S
Member
Posts: 3354
Joined: Wed Oct 12, 2005 10:45 pm
Location: N YORKS UK

Re: 1956 350 crankshaft re assembly

Post by 56G80S »

I only did this once, many years ago, under direction from someone who really knew what he was doing (someone on Teesside may remember Frank Reynolds). He had a extremely substantial jig. It looked like a very thick base plate with two (?) posts that must've been 2 1/2 inches in diameter at least and kind of rod and clamp arrangement which pulled the crank wheels up against the posts.

All was fine except that I'd fitted one of the duff crankpins which broke about 5,000 miles or so later.

Regards

Johnny B
Catman
Posts: 6
Joined: Mon Oct 12, 2015 11:49 pm
Location: CHESHIRE UK

Re: 1956 350 crankshaft re assembly

Post by Catman »

Thanks for the comments. There is a tool shown in the manuals but i managed by using a laser to mark the exact vertical through the 12 o-clock tooth on the gear ( fitted temporarily ).
Assembling the flywheel axles and the conrod / big end assembly went smoothly ( I have a freestanding workshop press ) and I managed to get the shafts true to 0.005 at the first attempt without any fiddling. I turned up a dummy big end pin just under size to enable me to get the two wheels concentric and marked them up in several places so that when the two were pressed together with the real crankpin they were as good as there. The jig used to achieve this that is mentioned by 56G80S would make this more easily achieved but luckily I managed to get it pretty good without having one one this occasion.
I have ordered a lead mallet to use to adjust the assembly to the desired 0.001 / 0.002 and I will let you know how I go on.
E Hindley
Locked