coscast head valve steam seals?

[tamdoc]

Any one help need to were a can get valve steam seals for the costcast head ?

[Paul]

Vauxhall?

[philip2]

stem seals are the same for coscast or gm matey

[tamdoc]

Tryed vauxhall they only list one set and that will be the ones for the gm head av tryed the gm ones and they are 2 big?

[debeerd]

Tryed vauxhall they only list one set and that will be the ones for the gm head av tryed the gm ones and they are 2 big?

Then it was the wrong ones.
The 16v head takes the same as the coscast head.

[Cav Lad]

I bet they'll have give you valve stem seal for the Ecotec.

here you go..

VAUXHALL REDTOP C20XE C20LET VALVE STEM SEALS x16 | eBay

[Gordo]

Two different sized guides, so two different sized stem seals - a 13mm which, IIRC, is the early one and the 11mm which is the later and german spec guide.
if the stem seal is too big to sit on the guide, get the later type and if the other way round, get the early 13mm seal. Valves are the same, 7mm, diameter.

[Davey j]

Any one help need to were a can get valve steam seals for the costcast head ?

Autosprint worth a go. As are Autovaux.

[tamdoc]

Cheers yea it will b the 11mm ones a wil need then lol but vauxhall only list the one size but they dont have a clue a told them it was for a costcast head and he didnt even know wot that was lol

[Paul]

Did you say costcast or coscast?

[tamdoc]

Ha yea a said coscast head its just the way ma phn puts it in lol

[mikesmith181]

Two different sized guides, so two different sized stem seals - a 13mm which, IIRC, is the early one and the 11mm which is the later and german spec guide.
if the stem seal is too big to sit on the guide, get the later type and if the other way round, get the early 13mm seal. Valves are the same, 7mm, diameter.

the bit where valve stem seal sits is the same size on both buddy....

[tamdoc]

the bit where valve stem seal sits is the same size on both buddy....

As gordo said there two sizes mate a am a mechanic the standerd ones are to big and dont fit on the guide a take it there alot of people dont know that then.

[Gordo]

If you're still stuck, give SBD a call (or QED, etc), I've found them good to deal with and they have both sizes.
Tel: 0208 391 0121
may be a bit more than other sources, but if they save the hassle, well worth it, IMO.

[philip2]

someone ****ed something up as stem seals are the same whether coscast or gm, the early coscasts are 13mm od where it fits into the casting, then machined for 11mm where the valve stem sits. so a set of 20xe stem seals will fit either guide. there is no way vauxhall would make oddballs stem seals, spring platforms for early coscast heads as it would cost too much to do.

[Cav Lad]

I thought, it was Cosworth that made the Coscast head.

[Davey j]

They did the castings.............................

[tamdoc]

someone ****ed something up as stem seals are the same whether coscast or gm, the early coscasts are 13mm od where it fits into the casting, then machined for 11mm where the valve stem sits. so a set of 20xe stem seals will fit either guide. there is no way vauxhall would make oddballs stem seals, spring platforms for early coscast heads as it would cost too much to do.

Wel av got 3 coscast heads here that are needing the smaller valve steam seals as a have loads of standerd seals about and they dont fit lol

[tamdoc]

If you're still stuck, give SBD a call (or QED, etc), I've found them good to deal with and they have both sizes.
Tel: 0208 391 0121
may be a bit more than other sources, but if they save the hassle, well worth it, IMO.

cheers mate

[mikesmith181]

As gordo said there two sizes mate a am a mechanic the standerd ones are to big and dont fit on the guide a take it there alot of people dont know that then.

I have both size valve guides here buddy and they are exactly the same size stem seal for both, a pic can be supplied if need be.....

[mikesmith181]

I have both size valve guides here buddy and they are exactly the same size stem seal for both, a pic can be supplied if need be.....

Left is standard gm, middle bronze gm replacement, right coscast bronze replacement.

I too am a mechanic buddy and i've stripped a fair few xe/let heads........

[tamdoc]

Left is standard gm, middle bronze gm replacement, right coscast bronze replacement.

I too am a mechanic buddy and i've stripped a fair few xe/let heads........

av built loads of xe's and lets av got loads the now av got 6 the now lol the head is in the engineers the now even he said there to differnt size of seals for the coscast head the standerd gm ones dont fit there too big for the guide and its the original guides that are in it :-D

[mikesmith181]

LMFAO maybe it's a ford head you have then buddy as vauxhall have only ever produced one size stem seal for gm and coscast heads

[richiecs3]

Not lookin to get in the middle of if there is 2 sizes. but I built a coscast head last year had dubble springs in it had to take the head back off cause the springs rubbed off the seals and the little springs came off some of them. (I got a full seal kit off auto vaux ) brought the head back to where I got it skimmed and tested cause they put it back together and after a day or so they said it was the wrong size seal I gave them. But they should have looked so they put new seals in no charge... Don't no if this was a cop out for them over bad work but hope this helps over the two sizes and some parts guys don't no much to much except pushing

[mikesmith181]

Not lookin to get in the middle of if there is 2 sizes. but I built a coscast head last year had dubble springs in it had to take the head back off cause the springs rubbed off the seals and the little springs came off some of them. (I got a full seal kit off auto vaux ) brought the head back to where I got it skimmed and tested cause they put it back together and after a day or so they said it was the wrong size seal I gave them. But they should have looked so they put new seals in no charge... Don't no if this was a cop out for them over bad work but hope this helps over the two sizes and some parts guys don't no much to much except pushing

There's 2 sizes in that respect buddy, with double valve spring you need ones without the lip on the outer edge, but where the valve guides are concerned there's only one, that includes the ones for double valve springs.