Rover 2000TC- Took the head off and this what I found

[ghce]

To be honest I think before any thing is done you need to measure the bores for ovality and run-out / taper, that is the very first step you need to make before making any decisions about where to go next with the engine.

If you dont have one buy a T snap gauge and a decent micrometer. If you want to keep costs down on a rebuild you can actually get away with a lot of taper (but still close to manufacturers specs).

Your photos of the bores look a bit messy but until you have measurements you really dont know, it could just be that the engine had been left standing for some time with condensation staining the bores if thats the case a good hone and deridging tool will work wonders.

My whole point is measure first! if you are lucky you can save a fistful of dollars and get the car back on the road a lot faster.

Graeme

 

[Carlos]

Hi Carlos,
Are you sure that the +10 pistons will clear the problems of the bore? Normally first you should have a machine shop measure the bores, before deciding on the next piston size.

Mmmm... maybe I'm going too fast and not in the right sequence.
I found that the pistons that came with the car were standard, then I thought that the scratches where not so bad.
Then I found this set of +10 pistons, and thought that +10 belongs to a mild rebore.
I will have the block ready for the machine shop in a couple of days, I hope that my bet was right.
Thanks for your advice Demetris.

 

[Carlos]

To be honest I think before any thing is done you need to measure the bores for ovality and run-out / taper, that is the very first step you need to make before making any decisions about where to go next with the engine.

If you dont have one buy a T snap gauge and a decent micrometer. If you want to keep costs down on a rebuild you can actually get away with a lot of taper (but still close to manufacturers specs).

Your photos of the bores look a bit messy but until you have measurements you really dont know, it could just be that the engine had been left standing for some time with condensation staining the bores if thats the case a good hone and deridging tool will work wonders.

My whole point is measure first! if you are lucky you can save a fistful of dollars and get the car back on the road a lot faster.

Graeme

Well, Its too late... pistons are coming. When I get them, I´ll take pistons and block to the guy and see what he says..
Thanks for your advice.

 

[ghce]

Well, Its too late... pistons are coming. When I get them, I´ll take pistons and block to the guy and see what he says..
Thanks for your advice.

Hopefully +10 will do the trick, I remember back in the 80's when I was doing a ford engine and had a similar looking set of bores I had thought that the next piston size up would solve the issues but when the machine shop looked at it they said +30 , the wear was so bad.

This is a great thread I will follow with interest.


Graeme

 

[Carlos]

Hi people, I need this information quite urgent :
The picture explains the info I need: how much the valve can protrude from the cylinder head surface ( when resting ).
I was searching in the big manual, but I don't know what are the correct words to name it.
Thanks

 

[chrisw]

That looks very high, and not lapped in properly..

 

[Carlos]

That looks very high, and not lapped in properly..

Thanks Chris, but the picture I made is only to illustrate my question, the valve is sitting loosely ( no springs ), the head still in the machining process and the micrometer maybe not correctly positioned.
I need to find this info in the Rover Repair Manual.
( I'm from Spain, my English is quite funny and I have to fight with all the motor jargon )
I found this (on picture) but is not there.

 

[sdibbers]

Valve lift is how much the valve opens if that helps you. As for how height the valve sits when closed I would say around 1.5mm in my experience. Too flush and you have valve seat recession.

 

[Carlos]

Valve lift is how much the valve opens if that helps you

Thanks Sdibbers:
All the data in the picture is clear for me.
¨As for how height the valve sits when closed I would say around 1.5mm in my experience." Thats the info I need !!
Thanks again !