OST-043: Deutscher größerer Ventilkopf

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oldeskewltoy
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OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Fri Jan 27, 2017 3:35 pm

Image


This box came from Georgia..... but my client is a bit further away....... anyone care to take a guess where?



Image





Image



More to come....... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

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Re: OST-043: Deutscher größerer Ventilkopf

Postby Rogue-AE95 » Fri Jan 27, 2017 4:07 pm

Deutschland?
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Re: OST-043: Deutscher größerer Ventilkopf

Postby Sprite » Fri Jan 27, 2017 4:45 pm

I agree, got to be Germany. I know that Knopf means head, so ventilated head?
Rick

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Re: OST-043: Deutscher größerer Ventilkopf

Postby s24a » Sat Jan 28, 2017 5:51 am

Deutscher größerer Ventilkopf means literally German Larger Valve Head, or as slang, "Big Valve" head.

So I am assuming that this head from Germany is different than the US version as it comes already with bigger valves?

How about the port sizes/shapes? Are they the same or also different?

Hank
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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Sat Jan 28, 2017 9:30 am

s24a wrote:Deutscher größerer Ventilkopf means literally German Larger Valve Head, or as slang, "Big Valve" head.

So I am assuming that this head from Germany is different than the US version as it comes already with bigger valves?

How about the port sizes/shapes? Are they the same or also different?

Hank


no, no... no assuming..... it is FROM Georgia, and it CURRENTLY is a conventional smallport... it will become a "Big Valve" head ;)


from another forum wrote:oversized valves build for some one over the pond I assume :)

Sent from my SM-T800 using Tapatalk



Image


more to come..... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby naked8689 » Mon Jan 30, 2017 2:00 pm

Love your work OST. Can't wait to see more!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Wed Feb 01, 2017 2:09 pm

naked8689 wrote: Can't wait to see more!




from another forum wrote: and Kelford cams. Cam specs please.


this is one of Kelford's bigger cam options - 193HV-A...

and the specs...
Image


Question: What does that cam card tell me that adds to my work????


The head is pretty "skanky"....

Image



Disassembly goes smoothly enough....

Image


Journals in decent shape.... and chambers not too bad... although the valve seats have seen a great deal of moisture, good thing those seats will be removed for larger seats

Image



More to come........ :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby naked8689 » Thu Feb 02, 2017 10:51 am

Modification of the lifter bores because to much valve lift?

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Fri Feb 03, 2017 10:16 am

naked8689 wrote:Modification of the lifter bores because to much valve lift?


yep.... I'll need to clearance each cam lobe so that it can rotate without obstruction




oldeskewltoy wrote:
although the valve seats have seen a great deal of moisture, good thing those seats will be removed for larger seats


Yes it is a good thing.........

This is #8 valve's seat

Image


And these are #5, 4, and 3

Image




more to come...... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Fri Feb 03, 2017 10:38 am

from another forum wrote:What did you use to clean it, bead blasting?


as a final step.... yes... but there is a different process the machine shop uses to get it cleaned... once cleaned chemically, then it got glass beaded. and to make sure there was no glass beads left... the galley plugs were removed, the galleys cleaned, and the head threaded for thread in galley plugs

Image


more to come....... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby Rogue-AE95 » Fri Feb 03, 2017 5:30 pm

oldeskewltoy wrote:Image


Eye spy a small nick on the edge of the combustion chamber... and a nice casting line that will be OST'd ;)

oldeskewltoy wrote:and to make sure there was no glass beads left... the galley plugs were removed, the galleys cleaned, and the head threaded for thread in galley plugs


Is this standard work for all the heads you have cleaned there? I ask because I really like this idea. A Honda cylinder head I picked up had all its threaded plugs removed. Seems like a good idea especially for cleaning.

Is it possible (or recommended) to have the head coated, in a heat-shedding ceramic type coating?
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Re: OST-043: Deutscher größerer Ventilkopf

Postby mr2mk1hero » Sun Feb 05, 2017 11:35 pm

How do valve seats even get like this? Before I rebuilt I know my engine was sitting in the POs shed for 2 years without being started..., but when I took it apart and looked at the head the seats weren't like this at all. Was this caused a blown HG? I'm just curious.
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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Tue Feb 07, 2017 8:08 am

Rogue-AE95 wrote:
oldeskewltoy wrote:and to make sure there was no glass beads left... the galley plugs were removed, the galleys cleaned, and the head threaded for thread in galley plugs


Is this standard work for all the heads you have cleaned there? I ask because I really like this idea. A Honda cylinder head I picked up had all its threaded plugs removed. Seems like a good idea especially for cleaning.

Not all the heads have received this treatment, but many have.

Rogue-AE95 wrote:Is it possible (or recommended) to have the head coated, in a heat-shedding ceramic type coating?


The head it self.... I've seen a few with coatings on them... not sure how they work...... What I have heard that very well may work... is a ceramic coating in the exhaust bowls, and ports

mr2mk1hero wrote:How do valve seats even get like this? Before I rebuilt I know my engine was sitting in the POs shed for 2 years without being started..., but when I took it apart and looked at the head the seats weren't like this at all. Was this caused a blown HG? I'm just curious.


Water could very well have been sitting in this head... I'm just speculating... but from the condition I got it in, it would not surprise me if the head was @ a salvage yard sitting in a pile..........
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Tue Feb 07, 2017 10:05 am

Top view has the intake side deburred, as well as having the lifter bucket bores shaped to allow the cam unobstructed passage. Bottom view has intakes, and exhaust side done.

Image


a bit closer view of deburring the casting.

Image



and a bit closer view of the bucket mods required for this set of cams

Image




more to come......... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Thu Feb 09, 2017 1:29 pm

from another forum wrote:
Dan, request still stands, before and after IN flow figures.



Image


more to come........ :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Thu Mar 16, 2017 9:17 am

from another forum wrote:Which, will of course be, another flow test (before any port work) to determine the benefits of oversized valves in a 4age head.

Right?

Great opportunity to dispel any myths and supply genuine data in regards to this modification.


The ONLY work performed on intake #1 will be the 3 angle, and simple blending of the new seat into the bowl(less then 3/4" deep)....

Image

... looking at the splitter that is evident.


The other 3 will get ported.


This view shows that the oversized seats in chambers #1 and #2 have been blended, but careful viewing inside chamber 1 shows the blending is only so deep, and that the guides are still untouched

Image



A different view, this time at the mostly finished #2, and the yet to be started #3

Image


More to come........ :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Mon Mar 20, 2017 4:02 pm

Image


intake ports are done until after checking on the flowbench... which will come after cutting the 3 angle valve job.


Exhaust side next.......



more to come..... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Wed Mar 22, 2017 10:06 am

oldeskewltoy wrote:Exhaust side next.......





2 down... 2 to go... Note these ports fit either the SV3 copper gasket, or the blacktop gasket


Image


more to come.... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby s24a » Wed Mar 22, 2017 10:41 am

With SV3 going out of business, what are you going to do for the future with regards to these exhaust manifold gaskets?
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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Fri Mar 24, 2017 10:33 am

s24a wrote:With SV3 going out of business, what are you going to do for the future with regards to these exhaust manifold gaskets?


I was in on the original development on this gasket. **IF** SV3 goes away, I'm pretty sure I'll still be able to get the gasket.


from another forum wrote:I always love watching your work.


Thanks!


Image



The head is now ready to go back to the shop for it's 3 angle...........


The chambers are partially finished, major deshrouding has occurred, but final volume can't be set until the valves are set on their seats.


Image



more to come...... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby naked8689 » Sat Mar 25, 2017 11:58 pm

YESSssssssss!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Mon Mar 27, 2017 7:36 am

Hmmmm, I missed a post.... :(

Remember this head came with an ITB adapter. Well this ITB adapter is a well designed piece! I'm pretty sure it is a TecArt ITB adapter, and I'm a fan!

Image

Once I did the taper on the intake port roof[s]... the intake adapter is such a nice fit.... and notice the wonderful angle down now, instead of horizontal ;)




I wish I had @ my disposal a T3 adapter so I could put them both on the bench...



more to come...... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Tue Apr 04, 2017 3:20 pm

The head is currently back @ the shop getting the seats cut, and checking valve protrusion.


In the meantime.... A bit of finishing work on the Tec Arts ITB adapter

Image


more to come........ :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Tue Apr 04, 2017 3:20 pm

The head is currently back @ the shop getting the seats cut, and checking valve protrusion.


In the meantime.... A bit of finishing work on the Tec Arts ITB adapter

Image


more to come........ :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Thu Apr 20, 2017 5:20 pm

oldeskewltoy wrote:The head is currently back @ the shop getting the seats cut



Image

back in my care to get the bowls, and seats set to a consistent diameter, next week it goes back to have the cam clearances set, and then back in my care once again to set chamber volumes.

My client is using Mahle type F/A pistons, so chamber volume will be set to 37cc, to give him a static compression of 11.8:1


More to come.... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Thu Apr 27, 2017 4:42 pm

Image
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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Re: OST-043: Deutscher größerer Ventilkopf

Postby oldeskewltoy » Tue May 02, 2017 5:54 pm

oldeskewltoy wrote:
Remember this head came with an ITB adapter. Well this ITB adapter is a well designed piece! I'm pretty sure it is a TecArt ITB adapter, and I'm a fan!


Can barely see the blend where the manifold ends, and the head begins.......... ;)

Image


more to come....... :D
OST Cyl head porting, - viewtopic.php?f=22&t=300

Building a great engine takes knowing the end... before you begin :ugeek:

Enjoy Life... its the only one you get!

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