simple question , should you bolt up the empty engine case again when storing to stop any possibility of it twisting / moving or is this not required .
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simple question , should you bolt up the empty engine case again when storing to stop any possibility of it twisting / moving or is this not required .
A riend of mine told me that in 6 months his mag case out did twist after splitting the case and storing on the shelf. Take the time bolt it and torque it together.
I thought the warp comes from thermal stress.
I had my case media tumbled, flattened and align bored.
It sat for 6 months and was fine.
I wish I had wiped it down with some oil though.
It developed some "white rust" from sitting
that added hours to my case prep time when
I started my rebuild.
1. Clean thoroughly
2. Dry with compressed air including all oil passages
3. Coat inside an out with Gibbs
4. Assemble case half's & hand tighten a couple of perimeter nuts
Corrosion is the biggest enemy. The case will not warp on the shelf.
Tom,
Is it a good or bad idea to put it in a plastic bag on top of your recommendation?
Richard
I was unaware of this potential problem, I have a 2.2E case sitting up in my attic split apart. I guess I should clean it up and bolt it together for safe keeping.
You can use a plastic bag but don't seal it. It can trap moisture, prevent evaporation and accelerate corrosion. Ask me how I know.
Plastic bags are good for preventing dust or dirt contamination.
All my stored cases are open to the air after treating with Gibbs.
I would definately keep the case bolted togther. Doesn't need to be torqued, but snug. I didn't on one and had to have it line bored again. Won't make that mistake again.
If you must store in plastic there are transparent blue bags that emit a corrosion inhibitor. I would also throw in a big bag of dessicant and vacuum all the air out of the bag. That keeps it from snagging on things and the dessicant will run the moisture level down. Limiting the moisture level will slow the rate of corrosion.
Me too. The problem is primarily with mag cases, not the pre-69 aluminum ones. Had to have mine line bored after letting it sit for a year after disassembly.Quote:
Originally Posted by csbush
Definitely put the case halves together before storing.
I don't think the mag cases warp while they sit in storage unbolted. I think what happens is that the case appears to be OK during disassembly as the crank will rotate with no problem even in a warped case. Once you unblolt the case halfs, the case relaxes to it's warped condition and the line bore is out of spec. If you try to retorque the case, the crank will not spin freely.
You may be kidding yourself if you disassemble a mag case engine and assume the case is good because the crank spun nicely during diassembly. Bolting the case halfs together for storage will not undo the damage.
I don't think the mag cases warp while they sit in storage unbolted. I think what happens is that the case appears to be OK during disassembly as the crank will rotate with no problem even in a warped case. Once you unbolt the case half's, the case relaxes to it's warped condition and the line bore is out of spec. If you try to retorque the case, the crank will not spin freely.
You may be kidding yourself if you disassemble a mag case engine and assume the case is good because the crank spun nicely during disassembly. Bolting the case half's together for storage will not undo the damage.
All good data , what i will be doing is as follows ;
- gently bolt the case together
- totally coat it in gibs
- make a box up to hold the case ( in position as per car installed )
- lay a peace of 10mm polystyrene along the middle of the box on the base inside.
- fill 1/3 the way up with expanding builders foam
- lay a bin liner on the foam(while wet ) and fold the sides over the box
- lay case right side up into the liner so using the weight to mold the foam under the case .
- let dry
- fold back the bin liners sides , wrap tight except for two small openings at each end
- using argon shield from the mig gear ( or co2) fill the bag to displace the oxygen . seal the ends .( no oxygen = no white rust )
This should support the case well , stop any corrosion and be ready for rebuild when needed.:D
+10000 on Gibbs
yep i love the stuff so much i became a local agent for it :DQuote:
Originally Posted by kenikh
Is Gibbs available in any 'chain' stores in the US? ie. Pepboys, Home Depot, etc...
Brett
I buy it here by the case
http://www.gibbsbrand.net/howtopurchasegibbs.html
John,
I think your preparations are about right.
I have plans for a climate controlled bunker.
No place for halfway measures!