C69A block I have made a blue on my spare engine, Didn't,t check the wall thickness before I bored it (3-3125),Turns out one cylinder has a part of the wall at .070 thick, this made a squeak at idle that I think was the bore letting the comp past,
So, I sort through my spare blocks and find one that looks good, Its a C69A and has the oblong water passages above the valves like an 8ba, instead of the usual small round ones, is this a Canadian only thing? Also what do you use to mount the engine stay rods to if you use an 8ba block in an early car. Thanks Lawrie |
Re: C69A block Lawrie, The C69A is the block to use for big bores; has real thick cyl walls. Yes, Canadian only engine. Originally, had shell rod bearings [double hole crankshaft], valve rotators, hard valve seats on ex only.
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Re: C69A block Brian ,you are a mine of info.
And yes they are thick, most on this one around.247 thick. I also have looked at sleaving the one with the .070 wall and that looks like a doable job for me. Lawrie |
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Re: C69A block Had one in my previous 47 cpe. they are good blocks.
GB |
Re: C69A block "they are good blocks"
They are good blocks if you want to bore big, on account of their thick cyl walls. However, I feel the iron they are cast from is not of the same high quality as pre war blocks. I make this statement because the C69A iron certainly doesn't weld the same as the early blocks. I've welded a few blocks over the years..... |
Re: C69A block Lawrie, Re engine stay rods to 8ba. I have done this a few times over the last 50 or so years to 35s 36s & just done a 32.
The bottom two bolts holding the 8ba bellhousing to the block are inline with the stay rods. on the 32 I have just done I stood the block, back end up on my Bridgeport & drilled the holes out to 7/17" & made a tool to spot face the front side of the holes. I made a new pair of stay rods the correct length that just look like the originals On the 35s & 36s I just machined a a piece to fit the block & welded it to the back part of the original rods. The 8ba block & bellhousing are thicker than the stay rod lug on the early blocks & the length from the back of the bellhousing to the chassis mounting is different. Phil. |
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Cheers Tony |
Re: C69A block Quote:
GB |
Re: C69A block Geez all the kiwis are in this thread! Go the C69A
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