SORNing over the winter
SORNing over the winter
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vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
I'm putting my MX5 as SORN over the winter, as I can't afford the engine swap it needs this side of Christmas. Just wondering what tips people had on preparing it for a extended time left standing? It is in a garage which has a bit of a leaky roof so not a totally dry environment.

It only has water as coolant at the moment due to multiple coolant flushes etc recently, so obviously the first port of call is changing that to anti-freeze.

Battery is brand new, but a trickle charger may be a good investment as it's a proper dry cell one.

Other than that handbrake off and in gear... anything else?


Chrisw666

22,655 posts

220 months

Monday 26th September 2011
quotequote all
If it needs an engine swap why do you need to worry about the coolant?

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
Chrisw666 said:
If it needs an engine swap why do you need to worry about the coolant?
Could freeze as it is now and damage rad / pipes etc? Or are you saying just drain the coolant completely - it still runs and drives and would need to be driven somewhere next year to do the swap when time comes.

Chrisw666

22,655 posts

220 months

Monday 26th September 2011
quotequote all
It wasn't clear in your first post that it still runs. If it was me (and I'm no expert) I would give the car a fresh lot of anti freeze, new oil and pump the tyres up to a higher than usual pressure. I'd be tempted to stick some extra grease or other lubricants on any of the bits that would normally move on a regular basis too.

andy-xr

13,204 posts

225 months

Monday 26th September 2011
quotequote all
Fill it with the correct amount of antifreeze regardless if you're thinking of driving it to wherever it's going to have it's engine change at, otherwise you'll be going there without core plugs I guess!

Other than that, bit of air n the tyres and handbrake off, neutral gear. I parked my Quantum up around 3 years ago after getting fed up with it needing constant attention, trying to get it back on the road at the minute and all it's needed is turbo seals, which is what was wrong with it when it was parked up. I didn't bother putting it on stands or oil down the bores etc, wasn't worth it and it started up fine on the fuel that was in there from 2008

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
Had new oil a few months ago. Yeah I'll stick some cheap antifreeze in it and pump the tyres up. A little worried about brake calipers seizing - would starting her up and pumping the brakes a few times a month be advisable?

Ozzie Osmond

21,189 posts

267 months

Monday 26th September 2011
quotequote all
You say it still runs - in which case I suggest SORN is almost certainly a false economy. Nothing a car likes less than being parked up in a damp garage for the winter and left unused, so get it out for a run round the block every week or two. And if you can get a wire up to the garage roof buy a £10 solar trickle-charger from Maplin.

Leptons

5,479 posts

197 months

Monday 26th September 2011
quotequote all
Just out of interest why are you changing the whole engine when it only needs a cylinder head?

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
Leptons said:
Just out of interest why are you changing the whole engine when it only needs a cylinder head?
Because it just seems the most cost effective solution, only slightly more than sourcing a used head and getting the gasket changed, and as I'm reliant on others doing the work so labour costs need to be factored in. Also bearing in mind it must have overheated in the past, has had a bodge-monkey work on it at some point and has got hot once with me so who knows what other damage it may have internally.

E30M3SE

8,483 posts

217 months

Monday 26th September 2011
quotequote all
Other option would be to drain the whole cooling system, matrix included, if it is due an engine swap, why waste money on antifreeze.

Pump the tyres up to a high PSI, 45 or more, it will stop the tyres getting flat spots where it is sitting.

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
The Crack Fox said:
I SORN my mk1 mx5 from Oct-Apr, stored in my lock-up which has the odd leak if there's a storm. I disconnect the battery, nothing else, I start it up every 2-3 weeks. Done this for 5 years with no problems.
Reassuring to hear, cheers.

andy-xr

13,204 posts

225 months

Monday 26th September 2011
quotequote all
If you're trying to work out costs, I bought a donor for it's engine as it was fairly strong, but turned out that there was a spark plug stuck in situ, and I had a paranoia about a bottom end knock after about 3 months of the transplant.

Local engine centre took the engine out, did a crank regrind, bored the block out to 1mm oversize, new pistons, rods and mains, new head gasket, new valves, new seals a mild port, polish and skim on the head, put it back together again and into the car with new fluids for just shy of £700. That was a CVH turbo engine, I can't imagine yours being massively more complex

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
andy-xr said:
If you're trying to work out costs, I bought a donor for it's engine as it was fairly strong, but turned out that there was a spark plug stuck in situ, and I had a paranoia about a bottom end knock after about 3 months of the transplant.

Local engine centre took the engine out, did a crank regrind, bored the block out to 1mm oversize, new pistons, rods and mains, new head gasket, new valves, new seals a mild port, polish and skim on the head, put it back together again and into the car with new fluids for just shy of £700. That was a CVH turbo engine, I can't imagine yours being massively more complex
I can get an engine change for anything between £400-1000 lowest being a risky breakers sourced engine and highest being a low mileage engine sourced and fitted by a good specialist with the work warrantied and the engine guaranteed a good runner and with brand new service items. It's just not cost effective doing engine work on mine, a head gasket change alone is £3-400 and I haven't seen many heads below about £150-200.

Ozzie Osmond

21,189 posts

267 months

Monday 26th September 2011
quotequote all
vrsmxtb said:
£1,000 - being a low mileage engine sourced and fitted by a good specialist with the work warrantied and the engine guaranteed a good runner and with brand new service items.
Sounds like bargain, all things considered.

vrsmxtb

Original Poster:

2,003 posts

177 months

Monday 26th September 2011
quotequote all
Just thought of something else - drain the washer bottle and get a strong washer fluid mix in there. It took me about 10-15mins of constant squirting to do this before!

vrsmxtb

Original Poster:

2,003 posts

177 months

Sunday 16th October 2011
quotequote all
Might be a silly question, but when disconnecting the battery is just removing the earth enough or should I undo both terminals?