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[Webby the Bear]

Guys, not bumping this thread. However, I am at home and am going to make a start on rebuilding these two cylinder heads.

Two quickies...

1.) Knowing that I had a couple of cam bearing cap bolts shear in the head i'm presuming the threads need redoing. Am I ok to use my new set of taps to do this?
2.) They're both quite dirty. To get them pristine can I literally bathe them in their entirety in diesel then take them to school and blow some compressed air over them?

[Shackeng]

Guys, not bumping this thread. However, I am at home and am going to make a start on rebuilding these two cylinder heads.

Two quickies...

1.) Knowing that I had a couple of cam bearing cap bolts shear in the head i'm presuming the threads need redoing. Am I ok to use my new set of taps to do this?
2.) They're both quite dirty. To get them pristine can I literally bathe them in their entirety in diesel then take them to school and blow some compressed air over them?

Use CG's dishwasher before he gets rid.

[Webby the Bear]

Guys, not bumping this thread. However, I am at home and am going to make a start on rebuilding these two cylinder heads.

Two quickies...

1.) Knowing that I had a couple of cam bearing cap bolts shear in the head i'm presuming the threads need redoing. Am I ok to use my new set of taps to do this?
2.) They're both quite dirty. To get them pristine can I literally bathe them in their entirety in diesel then take them to school and blow some compressed air over them?

Use CG's dishwasher before he gets rid.

  lol

[05omegav6]

Suspect Mrs CG might have summat to say about that idea

[Webby the Bear]

Hi guys. Again 

I take it I can reuse the springs, collets and collars? or do they come in a valve kit when I get those? and will I have to keeo them all together in order of where they went? ( I assume not as there'll be new valves but worth asking 

[Andy B]

Hi guys. Again 

I take it I can reuse the springs, collets and collars? or do they come in a valve kit when I get those? and will I have to keeo them all together in order of where they went? ( I assume not as there'll be new valves but worth asking 

Yes, re-use them & yes again, but as you say, they all need to go where they came from. You need loads of old tubs marked up for the collets etc , you poke the valves through a piece of card marked up with their position     

Doesn't matter if all new valves or re-cut valves where they go.

[Webby the Bear]

Thanks Andy, ill raid me ma's sandwich bag department 

so basically.... new valves, new stem seals and new guides (if theyre shot from the explosion)

whats re-cut valves? 

[martin42]

Valve grinding 

[Andy B]

Valve grinding 

It's a bit more than that. If you lap/grind a valve into a seat with a sucker & grinding paste, then you've a matched valve & seat in the head and you'd definitely keep that valve in that specific position. If you have a valve reground on a machine, then you effectively have a new valve.

[Andy B]

Thanks Andy, ill raid me ma's sandwich bag department 

so basically.... new valves, new stem seals and new guides (if theyre shot from the explosion)

whats re-cut valves? 

A new ground valve but done a machine ...... I suppose that 're-cut' is normally a term to used for the seat 

[Webby the Bear]

ok thanks for that  presumably the ones I buy will be brand new... or is it accepted that you can buy some ''re-manufactured'' ones?

[Andy B]

ok thanks for that  presumably the ones I buy will be brand new... or is it accepted that you can buy some ''re-manufactured'' ones?

they'll be new, just pattern & a lot cheaper than OE. The last valves I bought were about 10 yrs ago for SWMBO Hyundai. Dealers wanted £30 a valve, pattern valves form a motor factor were £15 for the pair. It ran OK till it got side swiped with a skip waggon   

[Webby the Bear]

ok thanks for that  presumably the ones I buy will be brand new... or is it accepted that you can buy some ''re-manufactured'' ones?

they'll be new, just pattern & a lot cheaper than OE. The last valves I bought were about 10 yrs ago for SWMBO Hyundai. Dealers wanted £30 a valve, pattern valves form a motor factor were £15 for the pair. It ran OK till it got side swiped with a skip waggon   

hope everyone was ok andy? 

I take it I should still lap new valves in 

[Andy B]

.....

hope everyone was ok andy? 

Yes, everyone was fine, it was a slow speed collision.

I take it I should still lap new valves in 

It won't do any harm, you should be looking for an even band of grey on the seat ie a bit that has been ground.

[Webby the Bear]

thanks andy youre a star