OST-043: Deutscher größerer Ventilkopf - MR2 Owners Club Message Board
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post #1 of 26 (permalink) Old January 27th, 2017, 17:39 Thread Starter
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OST-043: Deutscher größerer Ventilkopf




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













More to come.......
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post #2 of 26 (permalink) Old January 28th, 2017, 11:35 Thread Starter
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Quote:
Originally Posted by from another forum, responding to Deutscher-größerer-Ventilkopf
oversized valves build for some one over the pond I assume

Sent from my SM-T800 using Tapatalk

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post #3 of 26 (permalink) Old February 1st, 2017, 12:26 Thread Starter
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Quote:
Originally Posted by from another forum
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........
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post #4 of 26 (permalink) Old February 2nd, 2017, 02:01
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Quote:
Originally Posted by oldeskewltoy View Post

Question: What does that cam card tell me that adds to my work????
So, are you inviting open discussion? are you willing to answer as well as ask?
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post #5 of 26 (permalink) Old February 2nd, 2017, 14:20 Thread Starter
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Quote:
Originally Posted by from another forum
The lift is so insane that it will be hitting something? You need to make it clear?
yep.... I'll need to clearance each cam lobe so that it can rotate without obstruction


Quote:
Originally Posted by GE_Troller View Post
So, are you inviting open discussion? are you willing to answer as well as ask?
sure.... as long as the "open discussion" remains civil....



Quote:
Originally Posted by oldeskewltoy View Post

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......

Last edited by oldeskewltoy; February 2nd, 2017 at 14:24.
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post #6 of 26 (permalink) Old February 3rd, 2017, 00:08
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OK, so how about before and after flow figures? You skimped on that with the last advertis...err sorry...tech thread, in which you carried out the same work as this.

Before and after.
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post #7 of 26 (permalink) Old February 3rd, 2017, 12:55 Thread Starter
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Originally Posted by GE_Troller View Post
OK, so how about before and after flow figures? You skimped on that with the last advertis...err sorry...tech thread, in which you carried out the same work as this.

Before and after.

That head was flowed... the information wasn't shared - by client request. I can say that the exhaust side flowed a bit over 152 cfm @ .350" lift.




Quote:
Originally Posted by from another forum
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.......
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post #8 of 26 (permalink) Old February 3rd, 2017, 17:05
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Your doing it again, side stepping. Its hard to stay civil with you.

You have stated before that you prefer to pick and choose what you post to be favourable to yourself and that is exactly what you do.

Whats the EX flow got to do with it? Your charging thousands for a big valve intake, why not show what it offers in CFM?

So, I'll ask again, can you show before and after flow figures for this "BIG VALVE" modification you are promoting.

Less pictures, MORE DATA
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post #9 of 26 (permalink) Old February 3rd, 2017, 18:53
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AND, civility is out the door. That post was in fact HOSTILE. OST did a 'general' example of the effect of various valves and processes a while back. If I were to post on every little thing I've done with each positive and negative result would fill this entire site. I'd like you, Troll er to find ONE complaint about OST's work. Seems like he's doing a pretty good job.
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post #10 of 26 (permalink) Old February 3rd, 2017, 22:37
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Originally Posted by sirdeuce View Post
AND, civility is out the door. That post was in fact HOSTILE. OST did a 'general' example of the effect of various valves and processes a while back. If I were to post on every little thing I've done with each positive and negative result would fill this entire site. I'd like you, Troll er to find ONE complaint about OST's work. Seems like he's doing a pretty good job.
Any hostility you note, is simply your perception.

As far as your positives and negatives go;

You ran crying to admin with a stain on your blouse, demanding your account be deleted. I perceived that as apositive

You then continued to post self absorbed pointless off topic dribble like nothing happened.
I perceive that as a negative. See, its all about perception.

Your credibility was out the window when you pulled that little dummy spit, your word is worthless.

Your hypocrisy is rife, you see that I criticise others, (all I did was ask for some relevant data which was bluffed off) yet, you personally attack me.

Now, if you have any other problems with me, can you start a thread on it of your own and stay relevant to the technicalities of this one.

The fact that your more concerned with lagging on me, and not the flow improvements (if any) of the BIG VALVE mod discussed in this thread once again speaks volumes of you.

I cant be the only one interested in seeing what this mod offers in regards to costs/benefit???

Or...maybe I'am.

Dan, request still stands, before and after IN flow figures.
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post #11 of 26 (permalink) Old February 7th, 2017, 10:36 Thread Starter
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Quote:
Originally Posted by oldeskewltoy View Post




sure.... as long as the "open discussion" remains civil....

addendum: and non combative......


Quote:
Originally Posted by GE_Troller View Post

Dan, request still stands, before and after IN flow figures.
I make no promises... but I will try..... (that is the best you are going to get right now..........)




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.........
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post #12 of 26 (permalink) Old February 9th, 2017, 15:27 Thread Starter
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Quote:
Originally Posted by GE_Troller View Post

Dan, request still stands, before and after IN flow figures.

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post #13 of 26 (permalink) Old February 11th, 2017, 16:52
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OK, so that's the figures on your setup before valves and porting?

186 CFM? at 400? on a stock small port? that's at 25"?

Last edited by GE_Troller; February 11th, 2017 at 17:01.
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post #14 of 26 (permalink) Old February 13th, 2017, 13:56 Thread Starter
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ok, so that's the figures on your setup before valves and porting?

186 cfm? At 400? On a stock small port? That's at 25"?
@ 28"
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post #15 of 26 (permalink) Old February 14th, 2017, 03:28
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OK, well thanks for the numbers.

I have seen you comment that you can "calibrate" your setup. I can only suggest that this is an honesty thing from you in regards to numbers posted.

Also, what calculation are you using to determine the appropriate "over sized" valve?

In case you are wondering, (your probably not) I have been, for the most part, completely unable to find any genuine before and after data by way of actual flow/velocity improvements in regards to over sized valves, especially in pentroof applications.

Yes, I have read the ridiculously numerous "big valves make power Yo!" threads, but,
in my experience, the theory does not match the practical application.
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post #16 of 26 (permalink) Old February 14th, 2017, 16:42 Thread Starter
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Originally Posted by GE_Troller View Post
OK, well thanks for the numbers.

I have seen you comment that you can "calibrate" your setup. I can only suggest that this is an honesty thing from you in regards to numbers posted.

Also, what calculation are you using to determine the appropriate "over sized" valve?

In case you are wondering, (your probably not) I have been, for the most part, completely unable to find any genuine before and after data by way of actual flow/velocity improvements in regards to over sized valves, especially in pentroof applications.

Yes, I have read the ridiculously numerous "big valves make power Yo!" threads, but,
in my experience, the theory does not match the practical application.
To calibration: each time I change out the bore adapter, I re-calibrate both the intake and exhaust. A calibration plate is part of my flowbench equipment - the orifice in the plate is designed to flow 141.3cfm @ 28". I can adjust the software to 6 places(.000000), for the calibration.




As to how the valve size was determined, my client has a "built" engine already, the valve reliefs in his pistons are designed for 32mm intake, 27.5 exhaust.
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post #17 of 26 (permalink) Old March 7th, 2017, 14:24 Thread Starter
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been awhile... they managed to fit me in....



OST-043 getting the seats removed, and machining the head to accept new seats.



more to come.......
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post #18 of 26 (permalink) Old March 8th, 2017, 18:45 Thread Starter
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prepped... waiting for the next step





more to come.....
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post #19 of 26 (permalink) Old March 12th, 2017, 04:54
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Originally Posted by oldeskewltoy View Post
prepped... waiting for the next step





more to come.....
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.
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post #20 of 26 (permalink) Old March 16th, 2017, 11:10 Thread Starter
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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........
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