Intake Valve Profile

 Created by: Rosebud
Orig. Posting Date User Name Edit Date
Oct 21, 2019 03:52PM Rosebud  
Oct 19, 2019 05:09AM CooperTune Edited: Oct 19, 2019 05:19AM 
Oct 19, 2019 04:40AM dklawson  
Oct 18, 2019 07:53PM Rosebud Edited: Oct 19, 2019 04:24AM 
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 Posted: Oct 21, 2019 03:52PM
Total posts: 1211
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Member since:Jul 15, 2008
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Quote:
Originally Posted by dklawson
This is personal opinion, not technical.  I would take the head and replacement valve to the shop and have them do to the replacement valve what they did with all the others.  This is just me... but if one valve was different it would just nag at me forever.
Yeah, I realized about 30 seconds after hitting the SEND key that having one oddball valve would not be an ideal solution. I'm easily nagged by those kinds of things as well. Coopertune is correct. My slimmed-down valve is a fairly standard high performance valve. It seems like many of the vendors have this valve, including our host, but only with a single collet groove. Mine has 3 grooves. Coop's part no. C-AEG 543 is right on. Correct size, profile, and triple grooves. Thanks, man!

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports

 Posted: Oct 19, 2019 05:09AM
 Edited:  Oct 19, 2019 05:19AM
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If those are the pictures you just ordered the wrong valve. One is a fairly std replacement valve, while the other is a race type valve with a necked down stem. Steve (CTR)

Edit: the valve you need is a C-AEG 543

 Posted: Oct 19, 2019 04:40AM
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This is personal opinion, not technical.  I would take the head and replacement valve to the shop and have them do to the replacement valve what they did with all the others.  This is just me... but if one valve was different it would just nag at me forever.

Doug L.
 Posted: Oct 18, 2019 07:53PM
 Edited:  Oct 19, 2019 04:24AM
Total posts: 1211
Last post: Nov 15, 2019
Member since:Jul 15, 2008
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Image Gallery

Due to ineptness on my part, I managed to bend a valve stem and pushrod while reinstalling my rocker assembly after a head gasket replacement.

I got a new valve and pushrod from the shop that originally built my motor. Upon inspection, I discovered that the seat profile of the new valve looks very different than my original valve. It’s entirely possible that the builder did some trick, performance work on my valves—I know he did some porting and shaping of my cylinder head. I'm not certain if the valve seats were modified to accommodate the modified valves.

Is it advisable that I return the new valve along with the old one and have the shop replicate the original profile, or can I simply lap the new valve on to the seat and use Prussian blue to insure that I have a good seal? Thanks!

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports