Hydrolock on a 2.4 diesel - advice needed

[thestoredt]

So up on Salisbury Plain I got a nasty surprise and a bow wave that flooded the intake (no snorkel). Engine is a 1st gen 2L-T

I was with a bunch of guys so managed to get it towed around in gear with the glow plugs out and get shot of all the water and luckily she started again and ran all day. Seems to be intermittently only running on 3 cylinders now so the advice needed is:

a. Is it worth trying to fix the fault, as at worst case scenario I've either screwed a con rod or tulipped a valve or 2 or is it

b. easier/cheaper to get and fit a replacement motor? - I guess the gen 2 2.4 will fit without any issue?

Cheers in advance - Dave

[Vagrant No2]

It maybe worth contacting Mark Surfenthingy as he had a engine for a 1st gen I fitted a new head to when Sumo owned the engine. Not sure if he used it or not.

[thestoredt]

It maybe worth contacting Mark Surfenthingy as he had a engine for a 1st gen I fitted a new head to when Sumo owned the engine. Not sure if he used it or not.

thanks.

Can't find him on members list?

[Vagrant No2]

thanks.

Can't find him on members list?

Surfenstein

[thestoredt]

More advice

So I ran a compression check and all cylinders are popping around 220lb

Not sure where to go next, as I guess the cylinder will still give good compression with a bent con rod, just not at the right time?

HEEEEEEEELP

[Vagrant No2]

Have you identified the cylinder mis firing? To do this you can crack off an injector 1 at a time and if the mis fire stays the same that is the faulty one. Maybe you got dirt under the nozzle of an injector when water entered cylinder.

[thestoredt]

Have you identified the cylinder mis firing? To do this you can crack off an injector 1 at a time and if the mis fire stays the same that is the faulty one. Maybe you got dirt under the nozzle of an injector when water entered cylinder.

Hey bud, yeah it's the cylinder at the front of the engine(nearest the fan). I undid that one and there was no difference in revs. I swapped the injectors round to eliminate injector failure, ran her again and same cylinder was failing with no drop in revs when I cracked off the injector.

Lots of white/grey smoke, no blue smoke. Water has no oil in and oil has no water in so assume it's unburned diesel....

Only thing I can think of is the con Rod now. What's your opinion?

[Vagrant No2]

Unburnt diesel normally black. White smoke is incorrect fuel delivery or timing. If the compressions are within 10% of each other and no knocking I would be surprised if a rod was bent but you never know. I have seen Surf engines with 3 1/2 pistons still running !!
When you cracked of the injector pipe did the same amount of disel pump out the pipe joint on each injector?
I will have a think about what else might be at fault.

[thestoredt]

Unburnt diesel normally black. White smoke is incorrect fuel delivery or timing. If the compressions are within 10% of each other and no knocking I would be surprised if a rod was bent but you never know. I have seen Surf engines with 3 1/2 pistons still running !!
When you cracked of the injector pipe did the same amount of disel pump out the pipe joint on each injector?
I will have a think about what else might be at fault.

Yeah the fuel was pretty consistent. All cylinders were around 210lb compression.

When you rev the nuts of it it sounds well balanced but white smoke billows out.

Do you think it could be a valve problem caused by the hydra lock? I didn't think it would be? You mentioned timing, think the belt may have slipped when I hit the bow wave?

[thestoredt]

Yeah the fuel was pretty consistent. All cylinders were around 210lb compression.

When you rev the nuts of it it sounds well balanced but white smoke billows out.

Do you think it could be a valve problem caused by the hydra lock? I didn't think it would be? You mentioned timing, think the belt may have slipped when I hit the bow wave?

Dude. Do the gen 2's con rods fit the same as I've found a breaker that has some?

[surfenstein]

What engine do you have is it the 2LT or the 2 LTll. Both engine have a bore of 92mm and a stroke of 92mm .The 2LTE has the same bore 92mm and stroke 92mm just the compression ration is 20:1 rather than 22.3:1

[thestoredt]

What engine do you have is it the 2LT or the 2 LTll. Both engine have a bore of 92mm and a stroke of 92mm .The 2LTE has the same bore 92mm and stroke 92mm just the compression ration is 20:1 rather than 22.3:1

Mines a 2L-T

So con rod should fit ok?

[surfenstein]

So you have adjustable tappets rather than a bucket and shim arrangement. Yep con rod will fit but use your own piston and not the 2lte one, they are different deck heights.

[thestoredt]

So you have adjustable tappets rather than a bucket and shim arrangement. Yep con rod will fit but use your own piston and not the 2lte one, they are different deck heights.

Thanks for the advice fella. I haven't yet taken the rocker cover off to inspect tappets but looks like I'll have the opportunity Milner are the only place I managed to get most parts from so far.

Thinking while it's all apart I'll change all belts and water pump.

Anything else you recommend doing while she's idle?

Was thinking of getting a replacement fully built head as I've seen them for £250 complete with gaskets etc. Seems more economical than rebuilding existing one?

You still got a 1st gen?

[surfenstein]

Just the usual when head is off clean the face of the block and use a straight edge with feeler gauges to check deck height of all the pistons. Just in case its more than one that is possibly bent, clean head face , clean the face and valve area, then using a block or two of wood, underneath, set the head up flat and upside down, fill each combustion chamber in the head with petrol, fill until it is level with the head face and check for leaks , this will tell you that you have no bent valves and or valve guides and that the valves are sealing against the head.If you have a dti gauge check the run out of the crank as well.
I have had quite a few 1st gens, one was quite famous as the only right hand drive solid front axle truck believed to be in this country, and its still going strong with its new owner.