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installing 11/32" valve stemmed valves on iron heads #1135235
12/16/11 02:30 PM
12/16/11 02:30 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
EL Master

Joined: Jan 2003
Posts: 9,670
Lima, Peru
If I were to install 11/32" stem sized 2,14" and 1,81" valves on a set of cast iron OEM mopar big block heads....

which bronze valve guides would I have to use? and where do I get them?

I am asking because I need to do this myself down here in Peru and I need to get the right parts.

thanks

D

Re: installing 11/32" valve stemmed valves on iron heads [Re: domingo] #1135236
12/16/11 02:57 PM
12/16/11 02:57 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
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D

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Posts: 16,376
There's at least two ways that I know about.
Drill and ream the stock valve guides to a 0.500" ID hole, then press in the 0.502" OD guide of your choice. You could even go to 5/16" or 8mm stems, which would be pretty ordinary and would save you valve weight.

You can also insert bronze liners into your existing guide holes which seems to be pretty widely accepted. You may have to ream the guide first to establish a cylindrical guide, then insert then push a ball of the right size through the guide to expand the liner into the guide. Look at the www.goodson.com catalog to see tools for both of these methods.

R.

Re: installing 11/32" valve stemmed valves on iron heads [Re: dogdays] #1135237
12/20/11 02:12 PM
12/20/11 02:12 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
EL Master

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Posts: 9,670
Lima, Peru
thanks for the advice!

Re: installing 11/32" valve stemmed valves on iron heads [Re: domingo] #1135238
12/20/11 08:13 PM
12/20/11 08:13 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
master
polyspheric  Offline
master

Joined: Oct 2007
Posts: 4,205
New York
If the RPM and spring pressure are moderate, you can drop the intake down to 5/16" and pick up some CFM.


Boffin Emeritus
Re: installing 11/32" valve stemmed valves on iron heads [Re: polyspheric] #1135239
12/20/11 09:45 PM
12/20/11 09:45 PM
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
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Performance Only Offline
top fuel
Performance Only  Offline
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Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
Quote:

If the RPM and spring pressure are moderate, you can drop the intake down to 5/16" and pick up some CFM.





could you use the 5/16 valve at .820 lift and 820lbs over the nose? maybe 8000rpm???

Last edited by Performance Only; 12/20/11 09:47 PM.

machine shop owner and engine builder
Re: installing 11/32" valve stemmed valves on iron heads [Re: Performance Only] #1135240
12/20/11 10:03 PM
12/20/11 10:03 PM
Joined: Feb 2007
Posts: 2,315
MOPAR HEADQUARTERS IN ALDEN NY
H
hemigod426 Offline
top fuel
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H

Joined: Feb 2007
Posts: 2,315
MOPAR HEADQUARTERS IN ALDEN NY
Quote:

Quote:

If the RPM and spring pressure are moderate, you can drop the intake down to 5/16" and pick up some CFM.





could you use the 5/16 valve at .820 lift and 820lbs over the nose? maybe 8000rpm???




i dont know of any off the self 5/16 383-440 wedge valve, that would be custom made from ferrea valve and $$,them make my roller cam valves 11/32 for 440 and 5/16 for hemi, dont think a 440 head even has enough guide distance for 5/16 valve,hemi has 2x plus


MOPAR OR NO CAR
Re: installing 11/32" valve stemmed valves on iron heads [Re: Performance Only] #1135241
12/21/11 12:13 PM
12/21/11 12:13 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
master
polyspheric  Offline
master

Joined: Oct 2007
Posts: 4,205
New York
That's so funny!!!
Do you just WAIT there in your trailer for these golden moments, or do you have a life?

Let's play it the other way next time: YOU say something, and I say you're wrong.


Boffin Emeritus
Re: installing 11/32" valve stemmed valves on iron heads [Re: domingo] #1135242
12/21/11 01:02 PM
12/21/11 01:02 PM
Joined: Jan 2003
Posts: 74,947
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 74,947
U.S.S.A.
Quote:

If I were to install 11/32" stem sized 2,14" and 1,81" valves on a set of cast iron OEM mopar big block heads....

which bronze valve guides would I have to use? and where do I get them?

I am asking because I need to do this myself down here in Peru and I need to get the right parts.

thanks

D




Just sitting here in my trailer ...

Do they make stock length valves in that stem size ?







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