Freelander 1.8 K series engine !

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htr said:
I've heard /read about that method of DIY head skimming. The fellow I read about used wet 'n dry paper like you with a lubricant but he used an old plate glass topped table! Heads have a tolerance where they can be machined to. Search on here an I think you'll find that measurement. Was the motor badly overheated when the HG went? The head may have softened / gone porous. On the 75 & ZT club's site there's an interesting write up by a fellow who rebuilt a dud 1.8 motor including resealing liners...
see this link Porous / soft heads can be peened around the liner ring and the head made serviceable again. Check out what the MG fellows do on the MG Rover forum.
Click to expand...

I don't know whether is was badly over heated, I bought it for spares with the head in the boot ! Head not warped anyway !
 
Make sure you power hose the head or something to make sure it is cleaned thoroughly, don't want any sandpaper particles in your engine, and they can be almost invisible.
I take it you have striped it down completely. Make sure you use good quality parts to rebuild it. I heard of others rebuilding heads with cheap valve stem seals off ebay and they had to do it again 6 months later.
Use an elastomer gasket as it will be more forgiving.
As David says I'm impressed you kept going, regardless of how it goes, you'll learn a lot and have fun.
 
Piston & sleeve arrived in record time and is fitted, took all the other pistons out and cleaned them.

Any body know these guys http://www.dmgrs.co.uk/ ??? As they are holding the job up !! Paid them a week ago with £20 postage to France for a head gasket kit and oil filter, no tracking n° (that works) don't reply to e-mails & no tel N° !! Not over happy !!
 
Nodge68 said:
There's a thread of similar problems with DMGRS on mg rover.org. never used them myself though.
Click to expand...

Just what I need ! Unbelievable !! How can anybody run a business like that ! He must spend half his time settling PayPal disputes and replying to angry customers wanting replies to e-mails through forums !!!!
Luckily I paid by PayPal !
 
Yip, he's a part timer, I bought stuff from him once and had poor service. If any consolation the kit is good and it will come. Eventually!
 
htr said:
I've heard /read about that method of DIY head skimming. The fellow I read about used wet 'n dry paper like you with a lubricant but he used an old plate glass topped table! Heads have a tolerance where they can be machined to. Search on here an I think you'll find that measurement. Was the motor badly overheated when the HG went? The head may have softened / gone porous. On the 75 & ZT club's site there's an interesting write up by a fellow who rebuilt a dud 1.8 motor including resealing liners...
see this link Porous / soft heads can be peened around the liner ring and the head made serviceable again. Check out what the MG fellows do on the MG Rover forum.
Click to expand...

I've used the same method for lapping a computer processor. From manufacture the top of the processor is usually not entirely flat and obviously the thicker it is, the slower it will conduct heat away from the chip. A glass chopping board with a sheet of wet and dry, working through the grades to 2000grit using only the weight of the chip itself and a circular motion will yield a perfectly flat and mirror like finish. I did contemplate this when i did mine but straight edge said it was all good so didn't bother. I'd supose a similar method would be easier with the head though as the extra weight of it would help guarantee an even pressure load.
 
krisboats said:
I've used the same method for lapping a computer processor. From manufacture the top of the processor is usually not entirely flat and obviously the thicker it is, the slower it will conduct heat away from the chip. A glass chopping board with a sheet of wet and dry, working through the grades to 2000grit using only the weight of the chip itself and a circular motion will yield a perfectly flat and mirror like finish. I did contemplate this when i did mine but straight edge said it was all good so didn't bother. I'd supose a similar method would be easier with the head though as the extra weight of it would help guarantee an even pressure load.
Click to expand...
What was it Kris, a 286? LOL, I've been a computer engineer for over 25 years and never heard of anyone doing that. Did it make any difference? I take it you were overclocking it and needed more cooling.
There are a couple of videos on youtube of guys doing it.
Here's one
 
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Alibro said:
What was it Kris, a 286? LOL, I've been a computer engineer for over 25 years and never heard of anyone doing that. Did it make any difference? I take it you were overclocking it and needed more cooling.
There are a couple of videos on youtube of guys doing it.
Here's one
Click to expand...


Yeah, it was my old q6600. I was pushing for 4.0ghz with it but didn't manage it :( Still a fun project though for a rainy afternoon. Dropped the temps by about 5 degrees.
Running water cooling now and the modern chips just don't require the extra effort of lapping fo an OC as they already fly through most things.

You can see from this pic just how concave/convex the chip lids can be.
lapped_cpu.jpg

Centre section was much lower than the edges on that chip. Lapping the cpu and the cooler makes for a lovely flat mating surface :D
 
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krisboats said:
Yeah, it was my old q6600. I was pushing for 4.0ghz with it but didn't manage it :( Still a fun project though for a rainy afternoon. Dropped the temps by about 5 degrees.
Running water cooling now and the modern chips just don't require the extra effort of lapping fo an OC as they already fly through most things.

You can see from this pic just how concave/convex the chip lids can be.
lapped_cpu.jpg

Centre section was much lower than the edges on that chip. Lapping the cpu and the cooler makes for a lovely flat mating surface :D
Click to expand...
You got waaay too much time on your hands. Lol, maybe that was before you were daft enough to buy a k series freelander, all your spare time now taken up. :D
You wanna put Linux on your pc. Not only will it run faster, you'll not be able to run the silly games that take all the power and all your time anyway.
 
Result ! Nearly ! All back to gether, started first time, loads of white smoke coming out of the exhaust which I presume is the left over from when the head went!! loud tapping coming from the rocker cover but that might be the oil I put in (15w40).Took it for a blast run's fine no smoke, no over heating (yet) no coolant loss (yet) BUT when warm wont idle, and stalls as soon as you let off the rev's and wont start (easily) !
 
Well done mate It's a really satisfying feeling running a car for the first time after open heart surgery.
You might want to double check your timing tho as one tooth out will do what your describing. It will still run but not well.
 
Thanks matey ! I don't think it's celebration time yet ! Tappets making a reight racket so I need to try some 10w40 oil to see if they calm down ! Still starts fine when cold, tick's over fine and as soon as it's warm stalls and won't start !! There is a green plug on the right injector but can't find anything to plug into it ? I don't think that it's a tooth out on the cam belt as you said you can't realy go wrong with the crank mark and cam sprockets lined up but will check it again.Automatic cam belt tensioner is a bitch to get back on !!! . I can't believe how much crap was in the engine,rings were all gummed up ! looked like it had never had an oil change !! Looked more like an old deep fat fryer ! I'm going to drop a pint of oil and replace witha pint of ATF to clean it out a bit
 
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