(800) 853-2651
SHOP NOW

Valve question, for head.

A

Anonymous-0

Well-known Member
Have sealed power exhaust valves for a 300 350 gas head. They have a concaved head. I realy want a flate head but parts persons can't tell me what type valve head they can get without ordering.
So my question is to anyone that has bought valves or knows. Is there another company or IH that has the ones that are not concaved?
 
Maybe not much, but it does to me. When the originals were not concaved. Probably wouldn't notice the difference in compression, but if already loosing a little compression with a valve job I don't like loosing just a slight amount more with the valve head. IH ones are not that much higher but with none in stock at the dealer to look at, can't know if They are the same as originals or just the same as aftermarket.
 
(quoted from post at 15:48:04 11/24/12) Maybe not much, but it does to me. When the originals were not concaved. Probably wouldn't notice the difference in compression, but if already loosing a little compression with a valve job I don't like loosing just a slight amount more with the valve head. IH ones are not that much higher but with none in stock at the dealer to look at, can't know if They are the same as originals or just the same as aftermarket.
Click to expand...


The increase in compression from a properly sealing valve job would be 10 times the amount you are going to "lose" from concave valve heads and the minuscule change in valve height from a valve job.
 
Tuliped valves are lighter and have slightly better heat distribution. Imagine a 1/2% change in volume. I would just go with it. Jim
 
I bet if you called HY-Capacity, if you are a dealer, or have a dealer call, they would look and tell you what their valves are. I believe, if I remember correctly, that I ordered a whole set from them for one of my H tractors a few years ago and they were flat.
 
You must log in or register to reply here.

Similar threads

T
656 Gas Hydro Blown Head Gasket and Holy Valve
2 3 4
Replies
71
Views
3K
wore out
wore out
M
Resurfacing Ford 1710 head
Replies
15
Views
644
Tom in Mo.
Tom in Mo.
J
Another Thing On Valve Jobs
2
Replies
37
Views
1K
nick831
N
N
Valve head diameter for 8N intake and exhaust
Replies
2
Views
286
NATLOZ
N
F
Massey Harris 444 Exhaust Valve Seat Inserts
Replies
5
Views
361
FarmerHR
F
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top