Replacing valve seals on car - Easy!
Aug 10, 2014, 02:23 PM
#1
Replacing valve seals on car - Easy!
So I decided to change out my valve seals due to occasional smoke on hot startups.
Man the eurosport tool makes it simple!! Worth every penny!
OLD SEAL
NEW SEAL
Look at how bad the old exhaust seals were!!
Man the eurosport tool makes it simple!! Worth every penny!
OLD SEAL
NEW SEAL
Look at how bad the old exhaust seals were!!
Last edited by tsitalon1; Aug 10, 2014 at 05:21 PM.
Aug 10, 2014, 07:25 PM
#3
Interesting observation.
I was under the impression that the heat and stress of the spring wore through the seal.
Please explain why you believe it's valve float. I'm not dismissing your observation, I'm hoping to learn something here.
I was under the impression that the heat and stress of the spring wore through the seal.
Please explain why you believe it's valve float. I'm not dismissing your observation, I'm hoping to learn something here.
Aug 11, 2014, 11:32 PM
#4
from factory at full lift on stock cams there is like 1.2 mm between the top of seal and bottom of retainer. ad aftermarket cams and it can be just .2mm. thats just .008 clearance. float is when cam follower is lifting off the cam lobe. the bottom of retainer hits the seal like a bump stop.
with aftermarket retainer the clearance is opened back up and the bump stop effect is lost. the stock retainers are aluminum and made pretty thick.
with aftermarket retainer the clearance is opened back up and the bump stop effect is lost. the stock retainers are aluminum and made pretty thick.
Aug 12, 2014, 08:01 AM
#6
from factory at full lift on stock cams there is like 1.2 mm between the top of seal and bottom of retainer. ad aftermarket cams and it can be just .2mm. thats just .008 clearance. float is when cam follower is lifting off the cam lobe. the bottom of retainer hits the seal like a bump stop.
with aftermarket retainer the clearance is opened back up and the bump stop effect is lost. the stock retainers are aluminum and made pretty thick.
with aftermarket retainer the clearance is opened back up and the bump stop effect is lost. the stock retainers are aluminum and made pretty thick.
One thing odd though is I believe my retainers are steel as I used a magnet to place them back on the valve stems.
Are you sure OEM retainers are aluminum? If so that would mean the previous owner must of swapped retainers.
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Aug 12, 2014, 03:09 PM
#9
Thank you for that bit of education and that makes perfect sense. Since I am still on stock springs with Kelford cams maybe I'll reduce redline to 7k.
One thing odd though is I believe my retainers are steel as I used a magnet to place them back on the valve stems.
Are you sure OEM retainers are aluminum? If so that would mean the previous owner must of swapped retainers.
One thing odd though is I believe my retainers are steel as I used a magnet to place them back on the valve stems.
Are you sure OEM retainers are aluminum? If so that would mean the previous owner must of swapped retainers.
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