Anyone know of an update from Mark? Clicking on his profile shows that he was last active in 2013.

 

Soooo... What do you all think of a ticking noise that comes and goes? Nothing when cold, but as soon as the motor gets up to temp, a loud ticking that seems to be coming from deep within. Goes quiet after 1,000 to 1,200 RPM.

I've done quite a bit of work to try to eliminate the ticking - with little success.

- Good oil pressure cold (50/50 PSI) and hot (20/50 PSI) at idle and 2K RPM - Rotella 15/40.
- Did the MMO, 180 degree thermostat, new radiator, and fixed all coolant leaks. Tick, tick, tick...
- Decided to go a little deeper... 150 PSI compression (+/-2 PSI) on all cyl, no coolant leaks or exhaust gas in coolant.
- Did the oil pump (front cover), timing chain/gears, cam, lifters and pushrods (rocker shafts looked good).
- Internals looked nice and clean.

She fired right up after all the work and ran nice and quiet - until it warmed up. Still ticks (runs great).

I'm now at the point of pulling the motor, disassembling and cleaning, installing pins in all cylinders, and new bearings.

Not a sound for about a week.

What gives???

 

Ever notice how only the Bosch motors tick? I'm gonna say it's a curse by the ghost of Lucas for dropping British engine management and defiling the product with German electrics.

 

Very good point i have a 99 gems & a 2000 boshe, the gems runs like dream and has only thrown pne code, the 00 sounds like farm equipment and needs constant repair or adjustment.

 

First,


Differentiate from a ticking exhaust and a ticking engine.


If the noise appears to be coming from up top, its a clog on the rocker rail. Take the valve cover off and look at the build up, if you have even a slight coating on the parts its a good chance oil isn't flowing on the top parts.


I hear "slipped liner" too, problem is, many shops surf the internet for an outcome to their customers problem. They find these threads about a tick and it being a slipped sleeve and right away they swap the motors.


The problem with this is, it blows the slipped liner all out of proportion.


Machine shops have been installing sleeves in engines for YEARS. Why isn't this a problem with other engines? Why do pinned motors develop a tick?


The reason you don't have a tick on a rebuild is because the oil passages are clean.


The tick most likely comes because the passages get clogged.


Before you do any motor swapping, take off the valve covers and clean all the parts. disassemble the rockers and use a magnifying glass, poke the hole with an ice pick and make sure there isn't clogs.


Also, what about bars leak? bars leak for the cooling system? I grew up in a radiator\restoration shop, HATE THE STUFF.

 

Before you do anything else...put in a 180 thermostat...lucky 8, rovers north and others carry them and...get the land rover gray one...don't buy the cheap motorad...some have luck with those but peace of mind is worth more than the $20 or $30 you'll save

Cools the engine down 10 degrees

It should have had a 180 in it to begin with but land rover had to put in a higher temp thermo to satisfy import laws for emissions...now the engine runs too hot and makes the sleeves move

try it...what have you got to loose...compared to an engine swap....$70 bucks is worth a gamble

 

Hello Rickety. Long time no posting.

 

How does this make a sleeve move?

 

As I understand it the higher temps 'can' result in the slightly dissimilar metals of block and sleeves expanding different amounts.

Higher temps, ie actual over heating, increases likelihood.

Pin the sleeves, they still expand at different rates, but can't rattle around.

Run the engine cooler, they are not so dissimilar.

Caveat. I'm just a bloke that reads this forum, and that's my take on it. No actual experience.

 

Ok..so the 200-280 degrees of the block is going to change the sleeves that are part of the combustion chamber?


Think about it, the sleeves are where the spark ignites the fuel mixture. That would be much hotter.


If the sleeve was COLD and the block became HOT I would think there is a real easy chance of movement.


I'm not saying it doesn't happen, but not as common as this forum makes it seem. Not every tick is a sleeve and it shouldn't be the first thing that comes to mind when you hear it.