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1982 Austin Mini - Project Who?


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#706 JonnyAlpha

JonnyAlpha

    Camshaft & Stage Two Head

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Posted 20 February 2019 - 09:05 PM

Today I started pulling out the parts I have had soaking in the Citric Acid solution.

 

Nice and gunky:

 

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The cylinder head is coming up nice:

 

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Just a few stubborn areas:

 

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Once its done I am going to hit the water galleries with a Jet Washer to try and clear as much crud out as poss.

 

Here are the valve springs and caps all oiled up, they'll need a but more of a polish up but I just wanted to get them oiled up for now:

 

mmMu6Lk.jpg

 

And lastly the Crank and Water Pump pulleys looking almost new:

 

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Not sure whether to paint the pulleys or have them zinc plated, I wonder how they were done originally?



#707 JonnyAlpha

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Posted 22 February 2019 - 06:31 PM

Took the 12G295 out of the acid today for a final clean up:

Here it is after a little more scrubbing and a jet wash with clean water, then oiled up:

 

hsM5vbs.jpg

 

F8JYulL.jpg

 

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HmjR4hv.jpg



#708 JonnyAlpha

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Posted 22 February 2019 - 06:38 PM

Next I started to prep the 12G940 1275 Head for the acid dip.

 

MBGm8zh.jpg

 

I hadn't managed to get the thermostat sandwich plate and housing off as the bolts were seized. I tried some heat and gave them another go but in the end I had to cut the bolts off. The Thermostat housing inlet pipe had been snapped off so it would need replacing anyway:

 

I got the thermostat housing off (after a battle) but the sandwich plate is going to another problem. I also have the problem of getting the bolts out :-(

 

wAQLtrz.jpg



#709 alex-95

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Posted 22 February 2019 - 06:54 PM

That heads come up really well! I had the same problem with my sandwich plate, I cut it with a hack saw into 3 parts and cut a bit out and then rotated them which might loosen the studs.



#710 GraemeC

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Posted 22 February 2019 - 08:02 PM

You might find that after a bit of a soaking the bolts and sandwich plate start to ease their grip

#711 JonnyAlpha

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Posted 25 February 2019 - 09:20 PM

That heads come up really well! I had the same problem with my sandwich plate, I cut it with a hack saw into 3 parts and cut a bit out and then rotated them which might loosen the studs.

 

Well Alex, you were correct.

 

As soon as I had cut the sandwich plate and moved each part there was enough friction to rotate the bolts and in this case there was no murphy's law where one remained stuck.

 

2DDZV1e.jpg

 

FOypJgT.jpg



#712 JonnyAlpha

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Posted 25 February 2019 - 10:05 PM

Well I pulled the 12G940 from the bath and cleaned it up today.

 

lBAjIC9.jpg

 

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All pretty clean? 

The tachometer on the donor car read 55K and I have every reason to believe that this is the original engine. Very little coking to be honest.

 

With a little bit of work this could be a good head. 

 

The exhaust valve guide bosses are flush but the inlet ones are not, for better flow I think I read somewhere about removing them?






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