Chev 216 loose piston pin - which one ?

[hrpearce]

Mike, with the engine covers off do you have enough access to use a long screw driver to listen to the side of each cylinder. That is what Dad used to do on Bedford engines.

[Lynn Eades]

Hi Mike, you should be able to short it out at idle (it will only be audible at idle) (just use a screwdriver from plug lead to head)
If it is a timing gear noise, it won't short out.

[Phil Waterman]

Hi Mike

Here is a video of hunting down a noise inside the engine as suggested. I had a similar engine noise while the engine was still on the test stand. In my case it was not piston pin but only a miss-adjusted lower connecting rod. Remeasured and reshimmed noise when away.

https://www.youtube.com/watch?v=cAjy8LjiexQ

Cheers Phil

[Mike K]

Originally Posted by Phil Waterman

Hi Mike

Here is a video of hunting down a noise inside the engine as suggested. I had a similar engine noise while the engine was still on the test stand. In my case it was not piston pin but only a miss-adjusted lower connecting rod. Remeasured and reshimmed noise when away.

https://www.youtube.com/watch?v=cAjy8LjiexQ

Cheers Phil

Ok nice videos , I took the time to look through them all at here the library. The slow wipers on the HUP are mesmurising .... they would put me to sleep as I was driving along . My C8 has the same sleepy wipers .. has anyone fitted a vacuum tank yet ?

I will ask my neighbour down the road to help me out with the diagnosing of the piston pin noise in the C8 engine .

The valve guides have a .342 " bore and a OD of 9/16" . There are cheap modern generic guides available with a .342" bore but they have a OD of 1/2" EGGE parts in USA have the correct guides for 2.60 $ US each but the postage is a killer .

[Mike K]

Originally Posted by hrpearce

Mike, with the engine covers off do you have enough access to use a long screw driver to listen to the side of each cylinder. That is what Dad used to do on Bedford engines.

Robert you need to be a skilled circus acrobatic act in order to work on the engine in the cab 11 ...... or 12 . The mechano set bolt down engine covers in the cab 11 are a nightmare to remove

[Mike K]

Been fiddling and the fuel pump decided not to work, as I removed the fuel bowl from it, a nasty smell of stale petrol appeared . After investigation, the pump was gunked up with a fine brown gunk. Modern petrol is the culprit here , it leaves a brown film on fuel components , it can block jets and cause trouble in petrol tanks .

re: the valve guides , American auto parts in Ballarat have the generic early chevy guides, over 3" long , for $5 each. I will machine them to length .

I also got a aluminium timing gear to fit , I've seen the old fibre gears strip teeth too often .

[Mike K]

Well, the engine has had a run, warmed up and had a listen, could not hear anything out of order . The mystery noise comes and goes .

The water pump bearing is growly, this is a problem Ive always had with these engines. You buy a old stock kit, made 60 years ago, and the bearing grease has dried out , you install the kit and give it a try , the bearing sounds horrible . You buy a modern bearing , made in Taiwan, it lasts 3 months and is stuffed and wobbly and the pump leaks .

What do you do ? The bearing is a sealed unit. I will dismantle one and see if it is possible to re lube it somehow ?

The 75 year old radiator is also leaky ..looking rather sad . May have to do the recore .... save some pennies .

[Mike K]

Ok

I tried something. the NOS bearing from a 50 year old water pump kit , I managed to grind a small hole into it, I can now squeeze some wheel bearing grease in there and fill up the bearing with grease

I used a tiny air powered grinder with carbide and diamond bits, the metal is very hard on this bearing

[cletrac (RIP)]

They make needles to use with a grease gun for jobs like that.

[Mike K]

Originally Posted by cletrac

They make needles to use with a grease gun for jobs like that.

maybe this radiator can be made to fit the C8

http://www.ebay.com.au/itm/HOTROD-24...item3aa958923f

the outlets need to be moved

http://www.ebay.com.au/itm/HOT-ROD-C...item418f973725

this one looks better

[maple_leaf_eh]

Originally Posted by Mike Kelly

Been fiddling and the fuel pump decided not to work, as I removed the fuel bowl from it, a nasty smell of stale petrol appeared . After investigation, the pump was gunked up with a fine brown gunk. Modern petrol is the culprit here , it leaves a brown film on fuel components , it can block jets and cause trouble in petrol tanks .

re: the valve guides , American auto parts in Ballarat have the generic early chevy guides, over 3" long , for $5 each. I will machine them to length .

I also got a aluminium timing gear to fit , I've seen the old fibre gears strip teeth too often .

One suggestion I learned this summer was to pour in a measure of fuel stabilizer with each fill-up of an HMV. The stabilizer is sold in Canada to small engine users at the change of seasons. With a dose in the tank, snowblowers, lawn mowers and rototillers should be ready for the next year with fewer fuel problems. The stabilizer will always be in the tank and lines, and as a combustable it can't hurt.

[Mike K]

I am planning on making the canvas tilt framework for the C8 pretty soon .

One thing that will hold me up is finding the 1 1/8" diam. tubing - this is a odd size these days , around 28mm .

I will make up the dies for pressing the flat sections of the tubing . Could be a interesting project !

[Mike K]

These little plates were pinned to the engine cover on chevy cab 11/12 ? vehicles . I cleaned up the text in MS paint

The backing plate the text is printed onto is a cheap alloy material .

[Grant Bowker]

Similar plates were also found on the right side of the doghouse on Cab 13 Chevs. I'm not sure if I have a photo but will check.