Well guys its been a while,
Things were going great untill yesterday when I found my self in two feet of water in a flash flood in south brisbane. Of coarse my stupid CAI sucked up the water and funnelled a generouse amount into my engine.
Anyone know what this means? Ive taken it to one place whoare saying its making a really bad knocking sound and to take it to somwhere else. My mechanic (Mclean Motors Northside) has said to bring it in for a look. Im wondering what my options are. Ive rung around and the cheapest engine Ive found is 2k. Is that good?
Also is that the ebst way to go , engine replacment? Could it be more simple? Should I give my mechanic the go ahead to check it out or just look into replacing the engine?
Its not always that bad i was 4wdriving in our discovery and we went through a pit that was deeper than we thought and flooded the engine.... filled every piston.... we undid the spark plugs and turned it over a few times getting all the water out had some food and let it dry for a bit. the car has been fine ever since.
Hmmm do keep in mine, a 4WD are design to take lot more punishment then a sports car.
DISCLAIMER: The above text is the personal opinion of the author and does not represent the indisputable truth. The author is not responsible for any deaths, injuries or mental illness caused by the above statments.
Did the same thing last year but killed the engine completely, freaked out for a bit, then relised I could get the whole repair covered under insurance (JustCars). They wanted to rebuild the whole thing...estimate 8-10 weeks I said don't bother and they and I agreed to a second hand engine with low k's. took the repairer 'bout 1.5 weeks and with a three month warranrty. The good news is it is way better engine more power across the band and I got a knew idle stepper motor for free cause that was affected too...and she runs like a charm
the big problem when something like this happens is that water does not compress like air.
So if you suck in too much water you will get a hydrolic lock, this usually ends up bending conrods and damaging your bearings on your compression stroke. It also can bend valves.
Get a bicicle pump filled with air block the outlet and see how far you can push the pump handle in. now fill it with water and see the differance if it is a good quality pump it will lock up. Poor quality will let the water past the piston.
In a car engine revolving at 2000 rpm not much water will get past the piston rings on the compression stroke. so the piston will stop before it reaches top dead centre but the crankshaft will keep going and the conrod in between will usually bend or break somtimes the conrod will even go through the side of the block.
in this instance, hydrolock probably won't be your primary concern, extreme cylinder pressures caused by expanding steam would of done the damage.
I've had water up the inlet pipe before, I think I was lucky that I didn't suck up too much, engine stalled but I didn't suck up enough water to send the compression pressures through the roof (Although my car was throwing a lot of steam out the exhaust)
Guess I was lucky I had the forethough to release the accelerator when I went through the deep puddle =)
Anyways, if you're getting knocking noises, it's either bent values, or bent conrods =/
Either are bad, new engine would probably be cheaper than a rebuild.
However, if you had the money, perfect time for modification =)
modified intake but standard airbox. Problem was is that I had the intake down lower then the standard intake. Im over the marginal few HP that I get with it this way and will be putting my old one back on asap.
Might even think about a pod. But probably wont thinking about selling when I get it back to gether. Bit of a shame cause the new engine Im getting apparantly has only done 60000.
bugger... standard airbox sucks air in, whereas an aftermarket (non-sealed) one relies on the air being forced in and would've meant this situation wouldn't have happened (unless you were silly enough to enter the water at high speed).
from a 4WD going the other way forced water over my bonnet 