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[Omega man 2]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

[Marks DTM Calib]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

The answers to your question lie in how much you want to spend!

Its worth cleaning the pistons well, paint stripper is your friend here (great at removing carbon) and use the end off an old piston ring to get the carbon out the piston ring grooves (beware, the edges of piston rings are quite sharp!). You can also use a stanley knife blade to remove the carbon off the crown.

With the big end bearings, I would be inspecting carefuly and measuring the clearance with some plastigauge.....but then I would be doing the same with new bearings also.

As for the big end bolts, these can be re-used if desperate but, should idealy be replaced.

Remove any carbon lip from the top of the bores and lightly hone the bores with some fine wet and dry to break the glaze and allow the new rings to bed in.

[Lizzie_Zoom]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

The answers to your question lie in how much you want to spend!

Its worth cleaning the pistons well, paint stripper is your friend here (great at removing carbon) and use the end off an old piston ring to get the carbon out the piston ring grooves (beware, the edges of piston rings are quite sharp!). You can also use a stanley knife blade to remove the carbon off the crown.

With the big end bearings, I would be inspecting carefuly and measuring the clearance with some plastigauge.....but then I would be doing the same with new bearings also.

As for the big end bolts, these can be re-used if desperate but, should idealy be replaced.

Remove any carbon lip from the top of the bores and lightly hone the bores with some fine wet and dry to break the glaze and allow the new rings to bed in.

In days gone by I seem to recall we had to check that the bearing shells were the correct ones, for each bearing, and in the right way round after stripping or replacing.

Is this still the case on modern engines Mark? :-?

[Marks DTM Calib]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

The answers to your question lie in how much you want to spend!

Its worth cleaning the pistons well, paint stripper is your friend here (great at removing carbon) and use the end off an old piston ring to get the carbon out the piston ring grooves (beware, the edges of piston rings are quite sharp!). You can also use a stanley knife blade to remove the carbon off the crown.

With the big end bearings, I would be inspecting carefuly and measuring the clearance with some plastigauge.....but then I would be doing the same with new bearings also.

As for the big end bolts, these can be re-used if desperate but, should idealy be replaced.

Remove any carbon lip from the top of the bores and lightly hone the bores with some fine wet and dry to break the glaze and allow the new rings to bed in.

In days gone by I seem to recall we had to check that the bearing shells were the correct ones, for each bearing, and in the right way round after stripping or replacing.

Is this still the case on modern engines Mark? :-?

Absolutley....most Vx's have the bearings adn rods numbered and marked (you dont need the centre punch any more). Its actualy more common on modern engines as so many parts are precision machined (the V6 cam caps are a case in point).

The Vx standard method for making the big end caps is to cast a full rod, machine the big and little ends into it....and then to crack the big end to create the cap!

Hence very important to fit correctly....you also have to fit the pistons in the bores the right way round to!

[Omega man 2]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

The answers to your question lie in how much you want to spend!

Its worth cleaning the pistons well, paint stripper is your friend here (great at removing carbon) and use the end off an old piston ring to get the carbon out the piston ring grooves (beware, the edges of piston rings are quite sharp!). You can also use a stanley knife blade to remove the carbon off the crown.

With the big end bearings, I would be inspecting carefuly and measuring the clearance with some plastigauge.....but then I would be doing the same with new bearings also.

As for the big end bolts, these can be re-used if desperate but, should idealy be replaced.

Remove any carbon lip from the top of the bores and lightly hone the bores with some fine wet and dry to break the glaze and allow the new rings to bed in.

In days gone by I seem to recall we had to check that the bearing shells were the correct ones, for each bearing, and in the right way round after stripping or replacing.

Is this still the case on modern engines Mark? :-?

Absolutley....most Vx's have the bearings adn rods numbered and marked (you dont need the centre punch any more). Its actualy more common on modern engines as so many parts are precision machined (the V6 cam caps are a case in point).

The Vx standard method for making the big end caps is to cast a full rod, machine the big and little ends into it....and then to crack the big end to create the cap!

Hence very important to fit correctly....you also have to fit the pistons in the bores the right way round to!

Hence the reason i'm only removing the pistons one at a time

[Lizzie_Zoom]

Hi everyone.
I am currently fitting new piston rings to my omega and I just have a couple of quick questions.

Would it make a differance if I cleaned all the carbon off the top of the pistons?

Do i need new bearing caps bolts on refitting?

And should i change the big end bearings, the current ones look ok, just would it be worth buying new ones while there out?

Thanks

The answers to your question lie in how much you want to spend!

Its worth cleaning the pistons well, paint stripper is your friend here (great at removing carbon) and use the end off an old piston ring to get the carbon out the piston ring grooves (beware, the edges of piston rings are quite sharp!). You can also use a stanley knife blade to remove the carbon off the crown.

With the big end bearings, I would be inspecting carefuly and measuring the clearance with some plastigauge.....but then I would be doing the same with new bearings also.

As for the big end bolts, these can be re-used if desperate but, should idealy be replaced.

Remove any carbon lip from the top of the bores and lightly hone the bores with some fine wet and dry to break the glaze and allow the new rings to bed in.

In days gone by I seem to recall we had to check that the bearing shells were the correct ones, for each bearing, and in the right way round after stripping or replacing.

Is this still the case on modern engines Mark? :-?

Absolutley....most Vx's have the bearings adn rods numbered and marked (you dont need the centre punch any more). Its actualy more common on modern engines as so many parts are precision machined (the V6 cam caps are a case in point).

The Vx standard method for making the big end caps is to cast a full rod, machine the big and little ends into it....and then to crack the big end to create the cap!

Hence very important to fit correctly....you also have to fit the pistons in the bores the right way round to!

Thanks Mark!

My old knowledge would still be useful then should I again totally strip down an engine 8-) 8-) 8-) That good to know for some reason