Just can back from trying to unseize an Aston Martin dbs engine that's bin sitting for 30+ yrs, and what fun I had lol, I tried everything I could and it still wouldn't budge?

Soaked the bores with wd40 for a couple of weeks then, diesel for a week, then went round to attack it, tried rocking it in gear, tried rocking the crank with a bar, tried putting pressure on the bar while hitting the centre of pulley, crack lock down the bores, using a torch and cooking the bores up, I even jacked up the bar while on the crank then first hit it with a hammer then tried engaging the start while the bar was under load, but nothing

So I've left it now with the jack under the bar on the crank bolt putting pressure on the engine and all the bores left filled up with wd40

Any more ideas welcome as we know worse case is to strip down and rebuild it but was hoping it would turn over as it was only rebuilt a yr before it got left

 

With all that done to it and it still not budging I'd think it would be madness not to strip it.

Jordan

 

get the wd 40 out fill the bores with cheap coke

 

Regardless if it was rebuilt a year before taken off the road, sitting for 30+ years is surely enough reason to strip it down?

 

Yeh I know, only 2 out of the 6 bores were holding fluid which points towards those bores being the problem,

 

Yeh I told the bloke before I touched anything be prepared for it to be stripped, so that may be the next option

 

Got any pictures?

 

What about heating some oil up on a camping stove an pouring it down the bore's?

I wouldnt just dump it in for obvs reasons but legend has it it really does work...

 

I have but it's being gay and won't let me upload them off my phone

 

That's a thought that and boiling hot water in the coolant system as its got liners

 

boiling oil works

 

Mmm sounds like the answer

 

Out of interest have you tried removing all aux belts etc? If there's anything like that seized again you can try what you like and have no joy.

 

I have done it before, once on an old rotivator, on a MK1 fez crossflow, and a c1j mill.

Trust me it did work, although at 30yrs your on an uphill

As for boiling water yes but drain all old out first, DONT use any antifreeze, and again gently does it!!!!!

Good luck fella, let us know the outcome, love to see some pics of the aston

 

Drill out a sparkplug or make adapter to fit the plug thread, with an grease nipple on top.

Pump grease in the cylinder with gun, make sure the valve´s are closed.

It did work for me anyway....

 

Yeh I had to as the viscous fan got in the way of the big bar, plus the water pump is seized, when the belts came of they were moulded in the shape of a triangle lol

 

Can't as that would mean removing the top end/cams and as said if I'm going that far might aswell strip it all down, I'm treading as thin as possible as its still bolted together and not looking forward to stripping a chain driven Aston straight 6

 

I understand ..... hope you get it sorted !

 

Engine bay

 

Cheers m8

 

surely if its that siezed and you unseize it with that amount of effort, then your going to do some damage .

so why not just save a potential expense and pull the engine appart.

butter than a snaped crank, bent rod etc.

 

Good point the only downside is where the car is the house is prematurely sold so it needs moving

Another pic

 

Another pic anyone shed any light onto the name? Is that the hand builder?

 

Another one

 

Last pic till I go back

 

Are you joking? You think it's any co-incidence astons to this day are called DB7, DB9, DBS.......

Good luck with the engine.

 

David Brown was the former owner of Aston, hence the DB in the model names of the cars.

http://en.wikipedia.org/wiki/David_Brown_(entrepreneur)

edit - late reply!

 

Some none sensible approaches from me.

1. Ring Edd China.

2. Tow rope, 4x4, drop the clutch of the Aston at high speed.

3. I will stop the stupidity now.

Would be good to see how you get on with this, best of luck to you.

 

No matter what you do it'll need stripping down!
The rings will be fucked, the bores are likely to have 30 years of crap up them most of the seals will have perished and pretty much every moving part will need at the very minimum stripping off and lubricating.
What are you hoping to achieve by unsiezing it in situ? surely your not thinking of trying to run it?

 

whats happening with the car when its removed from the garage, has it been sold and how did you find it.

Sounds like a good barn/garage find and hopefully gets sorted out, keep with the updates mate

 

For all the time you'll spend pissin about trying to unseize it you could have pulled the engine out and stripped it by now.

Isn't there a possibility of doing some terminal damage to the block etc by trying to free it off after all this effort?

 

I know fuck all about Aston martins lol

 

The bloke knows worse case,

I was expecting to break a ring but it was really seized so it may be a strip time,

I wanted to get it turning so when it does get stripped I know I can get it to TDC and mark it up, as I know nothing about Astons and getting knowledge is going to be impossible

 

The blokes dad had it from nearly new then had kids and left it in a garage for yrs, so the idea is to try and get it back on the road

 

Possibly but as its got liners being an alley block I'd rather unseize together so it doesn't disturb the liners

 

Wouldn't keep putting time and money in to be honest. Strip it. You can be trying for another week. And possibly still no luck. Or this time next week it could be sat across a bench all cleaned up in bits.
Plus if the rings are stuck on the bores it's going to leave a lip or mark. If you do get it moving the rings are going to scrape past the mark and just do damage.

 

I forgot about the boiling oil trick, that can work.

Jordan

 

try this nothing better
http://www.kanolabs.com/

 

Fuck I forgot about that shit they use that on the old boats when restoring them

 

^^^ that any good for running a cvh lol