Page 1 of 1
OST-043: Deutscher größerer Ventilkopf
Posted: Fri Jan 27, 2017 3:35 pm
by oldeskewltoy
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Jan 27, 2017 4:07 pm
by Rogue-AE95
Deutschland?
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Jan 27, 2017 4:45 pm
by Sprite
I agree, got to be Germany. I know that Knopf means head, so ventilated head?
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Sat Jan 28, 2017 5:51 am
by s24a
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
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Sat Jan 28, 2017 9:30 am
by oldeskewltoy
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
more to come.....
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Mon Jan 30, 2017 2:00 pm
by naked8689
Love your work OST. Can't wait to see more!
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Wed Feb 01, 2017 2:09 pm
by oldeskewltoy
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...
Question: What does that cam card tell me that adds to my work????
The head is pretty "skanky"....
Disassembly goes smoothly enough....
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
More to come........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Thu Feb 02, 2017 10:51 am
by naked8689
Modification of the lifter bores because to much valve lift?
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Feb 03, 2017 10:16 am
by oldeskewltoy
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
And these are #5, 4, and 3
more to come......
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Feb 03, 2017 10:38 am
by oldeskewltoy
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
more to come.......
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Feb 03, 2017 5:30 pm
by Rogue-AE95
oldeskewltoy wrote:
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?
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Sun Feb 05, 2017 11:35 pm
by mr2mk1hero
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.
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Tue Feb 07, 2017 8:08 am
by oldeskewltoy
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..........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Tue Feb 07, 2017 10:05 am
by oldeskewltoy
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.
a bit closer view of deburring the casting.
and a bit closer view of the bucket mods required for this set of cams
more to come.........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Thu Feb 09, 2017 1:29 pm
by oldeskewltoy
from another forum wrote:
Dan, request still stands, before and after IN flow figures.
more to come........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Thu Mar 16, 2017 9:17 am
by oldeskewltoy
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)....
... 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
A different view, this time at the mostly finished #2, and the yet to be started #3
More to come........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Mon Mar 20, 2017 4:02 pm
by oldeskewltoy
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.....
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Wed Mar 22, 2017 10:06 am
by oldeskewltoy
oldeskewltoy wrote:Exhaust side next.......
2 down... 2 to go... Note these ports fit either the SV3 copper gasket, or the blacktop gasket
more to come....
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Wed Mar 22, 2017 10:41 am
by s24a
With SV3 going out of business, what are you going to do for the future with regards to these exhaust manifold gaskets?
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Fri Mar 24, 2017 10:33 am
by oldeskewltoy
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!
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.
more to come......
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Sat Mar 25, 2017 11:58 pm
by naked8689
YESSssssssss!
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Mon Mar 27, 2017 7:36 am
by oldeskewltoy
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!
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......
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Tue Apr 04, 2017 3:20 pm
by oldeskewltoy
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
more to come........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Tue Apr 04, 2017 3:20 pm
by oldeskewltoy
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
more to come........
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Thu Apr 20, 2017 5:20 pm
by oldeskewltoy
oldeskewltoy wrote:The head is currently back @ the shop getting the seats cut
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....
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Thu Apr 27, 2017 4:42 pm
by oldeskewltoy
Re: OST-043: Deutscher größerer Ventilkopf
Posted: Tue May 02, 2017 5:54 pm
by oldeskewltoy
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..........
more to come.......