Valve diameter measurement?

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Valve diameter measurement?

Post  HorsinAround on January 30th 2012, 2:47 pm

I received a bare set of oem iron heads that a truck puller had used several years ago. What do I measure to determine what valves it is set up for? He can't remember, so I'm trying to figure out what I need to look for.
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Re: Valve diameter measurement?

Post  bruno on January 30th 2012, 7:20 pm

if i was going to measure them i would from the 45* cut , can you tray a valve thats close and use some of that blue stuff to mark the diff ...... im sure the head gurus would chime in
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Re: Valve diameter measurement?

Post  rmcomprandy on January 30th 2012, 8:46 pm

bruno wrote:if i was going to measure them i would from the 45* cut , can you tray a valve that's close and use some of that blue stuff to mark the diff ...... im sure the head gurus would chime in

YEP ... measure the outside diameter of the seat.

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Post  HorsinAround on February 13th 2012, 5:30 pm

Ok, from the measurements, I believe they are the stock diameter. These heads are D2OE-AB's. So if my research is correct they require 2.19 and 1.72 valves with .341 diameter stems. Question is what length do i need? The cam I plan to use is a .600 lift.

Thanks again for your help.
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Re: Valve diameter measurement?

Post  rmcomprandy on February 13th 2012, 7:01 pm

HorsinAround wrote:Ok, from the measurements, I believe they are the stock diameter. These heads are D2OE-AB's. So if my research is correct they require 2.19 and 1.72 valves with .341 diameter stems. Question is what length do i need? The cam I plan to use is a .600 lift.

Thanks again for your help.

The stock production intake valve diameter in a Police Interceptor head was 2.200", (5.185" long, 30 degree seat) ... the stock production exhaust valve diameter was 1.725", (4.978" long, 45 degree seat).

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Re: Valve diameter measurement?

Post  HorsinAround on February 14th 2012, 9:48 am

Thank you for the reply. Will I need a longer valve with the bigger cam lift?
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Re: Valve diameter measurement?

Post  rmcomprandy on February 14th 2012, 11:13 am

HorsinAround wrote:Thank you for the reply. Will I need a longer valve with the bigger cam lift?

Maybe ... maybe not.

It's all about whether or not you can get the correct valve spring installed height.

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Re: Valve diameter measurement?

Post  HorsinAround on February 20th 2012, 1:17 pm

rmcomprandy wrote:
HorsinAround wrote:Ok, from the measurements, I believe they are the stock diameter. These heads are D2OE-AB's. So if my research is correct they require 2.19 and 1.72 valves with .341 diameter stems. Question is what length do i need? The cam I plan to use is a .600 lift.

Thanks again for your help.

The stock production intake valve diameter in a Police Interceptor head was 2.200", (5.185" long, 30 degree seat) ... the stock production exhaust valve diameter was 1.725", (4.978" long, 45 degree seat).

Would you happen to have a part number or where I can get them?
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Re: Valve diameter measurement?

Post  bigblok2000ranger on February 20th 2012, 5:40 pm

Competition Products

Part# E2903-1(change the one to a 8 for full set) $12.99 each

Part# I2904-1(again change the 1 to 8 for full set) $13.29 each

I have used Competition Products valves in 4 different builds with zero issues and long service life.

Competition Products 1-800-233-0199

These are one piece severe duty stainless steel valves.
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spring height

Post  HorsinAround on March 8th 2012, 3:41 pm

rmcomprandy wrote:
HorsinAround wrote:Thank you for the reply. Will I need a longer valve with the bigger cam lift?

Maybe ... maybe not.

It's all about whether or not you can get the correct valve spring installed height.

What is the correct valve spring installed height? I bought an intake and exhaust valve from Comp. products and put them in along with a retainer and locks. From the casting seat to the underside of the outer step of the retainer I measured 1.925 on the intake and 1.976 on the exhaust. Also the recommended spring for the cam I have is a comp cams 928 if that helps.
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