Need Valve Dimensions
06-17-2006, 11:51 AM
#1
Thread Starter
My Feedback: (23)
Join Date: Mar 2005
Location: Willowick,
OH
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Need Valve Dimensions
HELP, I am in the process of machining a V-4 cylinder four stroke motor. I would prefer to locate some ready made intake and exhaust valves from a company Like O.S. or Saito to save me the time machining them from bar stock. I cannot find any dimensions listed on replacement parts in any web site (Towers are limited). What I need is a valve face of .250"; Valve body dia. of .094" and a overall length of .705". Does anyone have any valves laying around they can mic and tell me what O.S. valve is close to these dimensions? I would appreciate the help. THANKS
06-17-2006, 08:20 PM
#2
Senior Member
My Feedback: (3)
Join Date: Nov 2002
Location: Mary Esther, Florida, FL
Posts: 20,205
Likes: 0
Received 15 Likes
on
14 Posts
RE: Need Valve Dimensions
VV:
At the moment I have a few mid block Saito engines down, they all use the same valve, for both intake and exhaust.
Head diameter is 0.470, stem diameter is 0.100, and the length overall is 1.025, all dimensions in inches. The FA-120 and larger Saito valves are larger.
The OS and Enya valves are similar in size to the Saito line.
Sounds like you need to make your engine larger, of find a different source. Valves machined from common bar stock wont last very long.
Bill.
At the moment I have a few mid block Saito engines down, they all use the same valve, for both intake and exhaust.
Head diameter is 0.470, stem diameter is 0.100, and the length overall is 1.025, all dimensions in inches. The FA-120 and larger Saito valves are larger.
The OS and Enya valves are similar in size to the Saito line.
Sounds like you need to make your engine larger, of find a different source. Valves machined from common bar stock wont last very long.
Bill.
06-18-2006, 10:02 AM
#3
Thread Starter
My Feedback: (23)
Join Date: Mar 2005
Location: Willowick,
OH
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
RE: Need Valve Dimensions
Thanks Bill,
These are the times I wish I had a nice small CNC Lathe to knock out a few dozen of these parts. Guess I will go ahead and start to make them using some Stainless Steel Bar Stock I have in the shop. Unfortunately turning the stem to .094" from the .250" bar stock will create some flexing of the piece during turning, especially with Stainless. Heads will be easy, just use a starter drill with a 45 degree angle (90 degree total) and the job is done. Thanks for the reply. Larry
These are the times I wish I had a nice small CNC Lathe to knock out a few dozen of these parts. Guess I will go ahead and start to make them using some Stainless Steel Bar Stock I have in the shop. Unfortunately turning the stem to .094" from the .250" bar stock will create some flexing of the piece during turning, especially with Stainless. Heads will be easy, just use a starter drill with a 45 degree angle (90 degree total) and the job is done. Thanks for the reply. Larry
