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scotty71
September 22, 2017, 11:41am Report to Moderator

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in have a 10mm crack near my drain plug, any ideas please.
I did think of drilling the crack out, and putting a bolt in its place.
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JohnD
September 22, 2017, 12:04pm Report to Moderator


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Is it leaking, scotty?
If not maybe ignore, but "drilling it out and putting a bolt in"?  How will that help?

Cast iron cannot be easily welded, unless the whole piece can be heated to near dull red heat, nigh impossible for a block.   See: http://www.lincolnelectric.com/en-gb/support/welding-how-to/Pages/welding-cast-iron-detail.aspx
"Stitching" is a repar process that is successful, but is very costly, and usually reserved for rare/irreplaceable blocks, or to restore very large ones.  
You can see why by the detail and craftsmanship shown here:

https://www.youtube.com/watch?v=Pq0wfU4ZaKk

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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scotty71
September 22, 2017, 12:19pm Report to Moderator

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yes it is leaking, but it is a small weep. the drilling idea is to stop the crack getting bigger. welding I would not do, as you said there is no point.
putting a bolt in the hole, is only like having another drain hole.
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JohnD
September 22, 2017, 1:20pm Report to Moderator


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I'd say, find another block, or engine, and rebuild.
A crack is completely unpredictable, it could let go tomorrow or stay that way for the next fifty years.

As for drilling a hole to stop the crack, good idea, but then how to fill the hole?   A bolt, yes, but the casing of the block will be much thinner away from the boss of the drain plug.    You might have only a turn or two of thread.
Sorry to be a Job's comforter!

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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RAGTOP
September 22, 2017, 5:22pm Report to Moderator

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Hi,  I would use Quicksteel , I have repaired a lot of engine blocks with this,
Some of the other putty ones did not work for me but quicksteel did.
E-bay  number 172813558766
http://www.ebay.co.uk/itm/GENUINE-QUICKSTEEL-QUICK-STEEL-REINFORCED-EPOXY-PUTTY-METAL
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Hogie
September 22, 2017, 6:05pm Report to Moderator
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Hi Scotty,
                  start off with the least invasive and progress from there.

Steel putty - easy to do and if it doesn;t work go to the next step
Braze - speak to a quality welding outfit.  There are a good selection of brazing techniques out there. You do need to get the area around the crack nice and hot but not the
            whole block.

Drill it out and insert a plug (Screw) I like this idea. Often done on aircraft (certainly the old ones) The crack is telling you that it is relieving itself so a hole will do nothing to affect the block.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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Spitfire6
September 22, 2017, 11:14pm Report to Moderator


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Hi,
Sounds like your looking for a quick N-Rigg?
Clean the area and drill several small shallow and angled holes circa 2 mm, to provide purchase for the QuickSteel or similar. Tap it in with a rubber hammer. If you have prepared and keyed it correctly, a can of the magic "it seals cracks in blocks" liquid, should make all OK.

Personally, I would get a new block but understand the cheapest option is quicker & that's what your looking for?

Cheers,
Iain.


Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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JohnD
September 23, 2017, 9:40am Report to Moderator


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Spitfire6,
How are you?   Your post reads incoherently, so hope you are well.

Google cannot find a relevant "N-Rigg", and "it seals cracks in blocks" can apply to a dozen products.
What do you recommend?   (That's not Acapulco Gold)

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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Spitfire6
September 23, 2017, 7:57pm Report to Moderator


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Hi John,
Damm keyboard. Should have read as N-Rig, as in Naughty Rig, AKA Jury-Rig. Will clean the keyboard this weekend; Thanks for that.

Here is one additive from EBay that says "It seals cracks in blocks" ;

EBay item number:172868025324   Many more hits will lead from this one.


Acapulco Gold?  Google & wiki helped me understand you.

https://en.wikipedia.org/wiki/Acapulco_Gold

If this is a hint to something you have for sale, NOT interested mate, sorry.

I would not be purveying it on here, as you will be in breach of the CT contract.
I understand that it might chill you out though, and if it harms nobody else; keep on it I say.

Cheers,
Iain.





Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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Gt6s
September 24, 2017, 10:56am Report to Moderator


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You could always cold weld it. Personally I would do it with nickel steel rods.

Laurence


I remember being wrong once before Laurence Cochrane Newtownards Northern Ireland. 1972 Gt6 2600EFI The Mutt. Some original parts fitted, Not many ! Early PI motor overbored to 2.6. Lightened & balanced, ported chambered, cam'd 6-3-1 manifold. Running on DTA engine management system incorperating the PI throttle bodies fitted with electronic injectors and throttle position sensor. 0-60 4.7s & 7000rpm. Seriously annoys owners of modern stuff ! (particularly coz its a heap) 2500 S box with competition 28% od. 3.63 diff with a quaife in it, innit ! Rotoflex based rear but with a swing spring fitted & sliding shafts.(swing spring rotoflex without rotoflex's). Koni's front Spax rear. Hydraulic handbrake. Citroen xantia discs 11,1/4 in dia under Morris Garages 15 in Maestro alloys.
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JohnD
September 24, 2017, 11:36am Report to Moderator


Posts: 6,794
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Thanks, Iain!

It was the keyboard, not the mindboard, then, good.

That ebay link leads to : http://www.ebay.co.uk/itm/Stee.....c:g:J4YAAOSwbl5ZiikZ

I should not be surprised to find a majority of succesful users on the PistonHeads thread, but I am to find any!  https://www.pistonheads.com/gassing/topic.asp?t=1259397

JOhn


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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Spitfire6
September 24, 2017, 3:11pm Report to Moderator


Posts: 1,136
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Hi,
I would bung a bottle in. Apart from the cost, it can't make it any worse? Maybe the heater gets blocked and stops working?

My Combi-Central heating system has begun to lose system pressure. Could find no leaks then the boiler stopped heating water and locked out with a no flame or no gas fault code.
Open boiler up and see water under boiler unit and flame sensor wire connector touching water. Dry cable and now have hot water. I have just bought 500mL of leak sealer.

Will be dumping a bottle into the CH tonight. I hope it works and wish success if the OP does same with engine block!

Cheers,
Iain.


Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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poppyman
September 24, 2017, 3:35pm Report to Moderator
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Posts: 298
Posts Per Day: 0.72
Quoted from Spitfire6
Hi John,
Damm keyboard. Should have read as N-Rig, as in Naughty Rig, AKA Jury-Rig.  


Acapulco Gold?  Google & wiki helped me understand you.

https://en.wikipedia.org/wiki/Acapulco_Gold

If this is a hint to something you have for sale, NOT interested mate, sorry.

I would not be purveying it on here, as you will be in breach of the CT contract.
I understand that it might chill you out though, and if it harms nobody else; keep on it I say.

Cheers,
Iain.

I could do with some acapulco gold if you have some for sale John




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