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monobloc

A monobloc or en bloc engine is an internal-combustion piston engine where some of the major components (such as cylinder head, cylinder block, or crankcase) are formed, usually by casting, as a single integral unit, rather than being assembled later. This has the advantages of improving mechanical stiffness, and improving the reliability of the sealing between them.
Monobloc techniques date back to the beginnings of the internal combustion engine. Use of the term has changed over time, usually to address the most pressing mechanical problem affecting the engines of its day. There have been three distinct uses of the technique:

Cylinder head and cylinder
Cylinder block
Cylinder block and crankcaseIn most cases, any use of the term describes single-unit construction, opposed to the more common contemporary practice. Where the monobloc technique has later become the norm, the specific term fell from favour. It is now usual practice to use monobloc cylinders and crankcases, but a monobloc head (for a water-cooled inline engine at least) would be regarded as peculiar and obsolescent.

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  1. D

    Trouble removing decorative shroud from monobloc tap

    Hi there I have a monobloc tap in my bathroom which is exactly like the one in this video: For some reason I absolutely cannot get the decorative shroud (so easily unscrewed 37 seconds into the video) undone at all. It's recently started dripping, so need to get it off in order to fix. Any...
  2. J

    Monobloc kitchen tap hole size

    Hopefully this question has a simple answer. I'm looking at monobloc taps for my new kitchen. I am having a granite worktop and they have asked me what size hole needs to be drilled to accommodate the pipes for the tap. Some of the taps I've seen online say 35mm hole size, while others don't...
  3. D

    Monobloc Tap Removal

    Hello everyone, I want to change my very old and worn monobloc tap. However, the hot and cold copper water pipes that go into it from the underside seem to be ‘bedded’ in by some kind of adhesive cement/ compound. There is no visible sign of a retaining nut to undo so that the tap can be...
  4. ViJay.

    Ocean Monobloc Hot Tap Leaking

    Hi all, I hope someone can offer some guidance on a leaking hot tap. I have tried to dismantle the tap but unable to get to where the washer is that I believe is allowing the water to leak. The water only leaks when the tap is turned on and gets worse as the flow is turned up. Water is leaking...
  5. T

    Monobloc tap for small hole

    Hi there! I have an old reclaimed porcelain sink for which I am looking for a mono mixer tap (second hole to be blanked off) Have purchased two now and neither fit the hole! Hole is square (ish) with minimum dimension of around 30mm. First tap had a brass threaded collar which was intended to...
  6. G

    Flexi Tail Doesn't Fit Compression Nut

    Hi all Fitting a new monobloc mixer tap. The flexi tails that came with the tap (see first photo) don't fit the connection (see second photo). Is there a connector / coupler that will allow the flexi tail to connect to the compression coupling? If you could provide a website link to a connector...
  7. P

    Monobloc Tap drips after being switched off

    Hi there,I bought a new tap from Screwfix. It is a Watersmith Heritage cubic single lever monoboc mixer kitchen tap. The problem is that when it is switched off it runs a small amount of water for about 10 seconds, then drips for about 10 seconds and goes completely off. I looked at the reviews...
  8. G

    Free up a seized monobloc spout

    I'n trying to free-up the swiveling spout on monobloc kitchen tap. I've tried soaking it in PlusGas hoping it'd seep down & give me a shot moving it - but no luck. The only heat I've tried is boiling water - didn't want to spoil the brushed finish. Any suggestions to get it freed-up?
  9. W

    Monobloc tap one of the lever handles working loose

    I have just had cause to change the hot ceramic valve (VR04 Type) IN my kitchen tap because it was dripping. The replacement valve has cured the drip but the M4 securing screw that came with it was shorter than the original and did not protrude through enough to engage in the head of the valve...
  10. T

    Monobloc tap

    Hi can anyone recommend a good brand of monobloc kitchen tap thanks
  11. G

    500mm flexible hose 15mm compression to M10 monobloc

    Hello all, I am trying to find a longer flexi hose and have tried all of the usual suspects including the internet but can only find 300mm long. Does anyone know if these are are available and if so where I can get them please? Thanks Andrew
    • gyblue
    • Thread
    • 15mm compression correct flexible hose installation monobloc plumbers pressure where
    • Replies: 14
    • Forum: Plumbing Jobs | The Job-board
  12. K

    monobloc tap and basin hole

    I've got a monoblock tap fitted to a washbasin but it seems the basin hole is a mm or so too big as there is a small gap between the edge of the tap and the edge of the basin hole, meaning water can easily go through. Do monobloc taps and basin holes come in standard size or do you need to...
  13. H

    Monobloc tap hose connections

    Evening chaps. I've got a Bristan monobloc mixer to fit. Now, the 10mm ends of the hoses fit a few inches deep inside the body of the tap, so can't get a spanner on them. Can't use a box spanner as even if I could get one on the hose, I wouldn't get it off as the other end is 1/2" bsp! What do...
  14. P

    Replacing monobloc non concussive tap with non concussive

    Hi Folks Looking to change a few monobloc mixer taps in our school. For some reason, they are connected on both hot/cold pipes to a single T piece that is fed directly by one supply, direct from a TMV. Seeing as the water temp is already controlled I see no point in a mixer tap and would like...
  15. M

    Pegler monobloc basin tap problems

    Hi I am new to this forum so I hope I'm doing it right. I have recently moved to another house which has three identical Pegler basin mixer taps however one appears not to be operating as per the other two. I think these taps are quite old and I have tried to provide a photo but so far no luck...
  16. S

    Monobloc tap screw.

    Hi everyone. I am trying to unscrew the bolt under my monobloc tap, however the bolt is very unusual as you can see in the picture. I am also an absolute noob when it comes to plumbing. Going through tons of youtube video on replacing a monobloc tap seemed quiet straight forward but my tap...
  17. J

    Monobloc Tap

    I have an Ikea monobloc tap (see picture) which was leaking from the base. Following the removal i discovered the copper inlet tails were corroded. I have replaced the tap tails but it still leaks. Is it possible to dismantle the tap and replace washers etc? or is it a new tap affair?
  18. K

    Kitchen monobloc swivel spout tap went to turn n hot tap and nothing no water at all

    HI I have a problen with this tap went to turn on ht water
  19. S

    permanently dripping overflow

    I'm not sure if this is the correct forum as you will see below. I have a multifuel gravity system with an electric immersion heater in the cylinder. The external overflow has a constant drip all year round. I've been in the loft where there are x3 tanks, the largest I assume is the main cold...
  20. R

    Replacement monobloc basin mixer

    Hi all, I have a dripping Ideal Standard Neostrahl monobloc basin mixer tap in the en-suite. It has probably been there since the house was built in 1983. I have replaced the washers (I had to cut down 3/8 in. washers to fit) to no avail, and my tap reseater is too large for the tap. So...
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