|
Valve Deposits
I'm wondering if anyone has noticed much intake or exhaust valve deposits when they have torn down their engine. In the last 25 years the EPA/OEM/Oil companies have required more additives to reduce deposits and keep injectors clean. I'm sure many of you buy the most expensive premium gas you can find to burn in your Cobra. Have any of you taken apart your engine and found your heads/valves with many deposits?
I've just recently realized the Top Tier additive packages are primarily intended to keep the injectors clean, but they also keep the intake valves clean. Back in 1965 there were no gasoline additives to keep injectors or intake valves clean! That almost makes you wonder if we really need the additives today in our 1965 vintage V8s! Again, anyone seen any deposits when getting a valve job? |
I used to work at a BMC Dealership back when British sports cars were real popular. We used to advise everyone to avoid Shell gasoline, because at the time it's usage would create large fluffy tan colored deposits on the exhaust valves. Left long enough it would impede air flow.
The current fuel injection systems and the current engine operating tempratures keep the A/F ratios lean enough to minimize build up. |
| All times are GMT -7. The time now is 11:11 AM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: