Hi,
I have a Rover 216 (1996 new line) i'd like to know if anyone know where could I find data about "pressure of the screws of the head gasket" and a little diagram of the engine.
Thanks,
Christian
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Sorry but "pressure of the screws of the head gasket" doesn't make any sense in engineering terms. Are you asking after the torque setting for the cylinder head bolts? The best place to find this along with a picture of the engine is in the relevant haynes manual. Most large libraries have haynes and smaller ones could get a copy in for you. Most motor factors sell them - they're about a tenner.
Someone else here may have the figures you require, but the diagram might be more difficult to achieve.
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The cylinder head bolts are tightened in stages and in a specific order.
1st stage 15 lbf ft
2nd stage tighten through 180 degress
3rd stage tighten through a further 180 degrees
Measure the length of the bolts before you re-use them. If the length of any boltis greater than 97mm, you must get a new one. They are stretch bolts and if you break one when you are refitting it, you might struggle to recover from the situation.
Can't help with a diagram. Haynes manual shows complete stripdown.
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Thanks for this data, and Im sorry for my english!
So let me see if I understand this instructions:
I have to tight the bolts to 15 lbf, then when you say "tighten through 180 degress" you mean I have to tight the bolts half turn?
Thanks!
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Christian,
I don't have the information that you need but I thought I'd reinforce Sam's point that the bolts have to be tightened in a specific order. This is VITAL. The tightening sequence is roughly 'from the centre of the head outwards' but you do need to find out the exact order as specified by Rover.
Regarding the tightening procedure, the 15 lbf is to settle everything down (i.e. to squeeze out any air, etc., between the components). The next stage (1/2 turn) puts everything into compression. The final stage (another 1/2 turn) stretches the bolt to a specific point within its elastic limit so that it acts like a spring. If the bolt is turned less than 360 degrees in total (on top of the 15 lbf) it won't be clamping the head tightly enough; if it is turned more than this, it may go past its elastic range and break.
No need to be sorry for your English. I'm sure it's better than the Spanish of most of us here! I learnt Argentinian-Spanish technical terms for my work many years ago involving Perkins diesel engines built under licence in Argentina. I can't remember much of it now but it's a lovely language and I wish I had kept up with it.
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