[Healeys] Block Porosity
Bob Spidell
bspidell at comcast.net
Fri Jan 10 08:55:16 MST 2025
I just had to put a new head on one of my tractors. With the new head I
had a small coolant leak at the back; my mechanic would have checked the
new head for flatness, but it leaked with the old head so I assume the
block isn't flat (of course I used a new gasket and the sealant Norman
Nock recommended for 100 heads). Anyway, I had the 'opportunity' to try
several of the sealants, the one the finally worked--for the time
being--was this one (Blue Devil didn't work):
https://www.amazon.com/K-Seal-ST3501-Permanent-Gasket-Repair/dp/B00QYZIVA6/
On 1/7/2025 10:35 PM, Alan Seigrist wrote:
> Hi Roger -
>
> I almost hate to suggest this, but have you tried stop leak / aluma
> seal? It works very well, just the trick is to make sure you flush
> the cooling system out and replace with fresh coolant after the
> leaking has stopped (to prevent the leftover stop leak from plugging
> other stuff up over time.
>
> Best,
>
> Alan
>
> On Wed, Jan 8, 2025 at 1:14 PM Roger Grace <roggrace at telus.net> wrote:
>
> Looking for some pearls of wisdom from the more experienced among
> us. Very frustrating as the car runs so well with good oil
> pressure and compression.
> After many months of tests and checking have established that the
> block on my BJ8 has the porosity issue. This is not the well known
> oil into water but water into oil. (after 1000 mi, 3300ppm into
> oil) I did find an area behind the center tappet cover where water
> was oozing into the drain back from the rocker. Did my best to
> repair it with epoxy from the outside. No doubt it is leaking
> there or some place else. Fellow lister Wayne Schultz had the
> identical problem.
> My query is if there is a known solution to this problem ? resin
> impregnation ? or maybe a modern treatment ?
> Also have located some replacement blocks but how to test ? and be
> assured that these old blocks also don't develop the same problem ?
> Changing blocks invariably means a complete engine rebuild.
> How common is this ?
> All very painful.
> rg
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20250110/ce7e965e/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HeadLeak.JPG
Type: image/jpeg
Size: 844238 bytes
Desc: not available
URL: <http://autox.team.net/pipermail/healeys/attachments/20250110/ce7e965e/attachment.jpe>
More information about the Healeys
mailing list