Guest 2slo4u Posted January 19, 2005 Share Posted January 19, 2005 Does anyone have any pictures of how these "improved" seals should look installed? I've already installed them and I'm not sure if I pushed them on too far or not far enough. Thanks. 95 impreza 81 zx turbo (brother's new toy) 02 kawi Link to comment Share on other sites More sharing options...
turbobluestreak Posted January 19, 2005 Share Posted January 19, 2005 I purchased these seals and right now I'm not to sure letting some one else install them when I get my valves done. So I've got a ford valve guide on order and will see how these things go on the right style of guide. I plan on machining what ever ford has on there guide into my new z guides to insure proper seating. Just my 2 cents. tbs Link to comment Share on other sites More sharing options...
spork Posted February 6, 2005 Share Posted February 6, 2005 Any updates or picture on these seals? I'm going to be needing to do this myself fairly soon and would love to see an installed picture and idea of how far down these seals need to be installed. Link to comment Share on other sites More sharing options...
speeder Posted February 6, 2005 Author Share Posted February 6, 2005 We have two boosted Zs here in Merritt Island running these seals and doing flawlessly. I recommend them without reservations. Link to comment Share on other sites More sharing options...
randy 77zt Posted February 9, 2005 Share Posted February 9, 2005 thanks for heads up.those seals were used on ford ranger pick ups.i have a motor that i am installing that has sat for years and the seals will get changed. Link to comment Share on other sites More sharing options...
yo2001 Posted February 9, 2005 Share Posted February 9, 2005 I was running Ford escort valve seals on all of my Z heads. Including the one on Forrest's P90. Link to comment Share on other sites More sharing options...
Bernardd Posted December 1, 2005 Share Posted December 1, 2005 any pics of these seals installed? i'm installing a set shortly and need to know how far they need to go down. i've never done this before and don't want to screw it up. bernard Link to comment Share on other sites More sharing options...
turbobluestreak Posted December 1, 2005 Share Posted December 1, 2005 you know I asked myself the same question and then I bought a ford valve guide to measure how far on they went and then make a two piece shim to between the spring seat and the valve stem when installing them. I'll dig out my tool and measure it and let you know. tbs Link to comment Share on other sites More sharing options...
spork Posted December 1, 2005 Share Posted December 1, 2005 No pictures...I didn't even think about it when I got around to installing mine. I installed mine and you'll get a good idea of how far they need to go on. if you go too far you'll know it and the seal will pucker just a bit. Pull it back up just a hair and all will be fine. I don't have a lot of miles on my car since the new seals, but have had zero problems as of right now Link to comment Share on other sites More sharing options...
heavy85 Posted December 4, 2005 Share Posted December 4, 2005 I began tearing into my engine in the first place because I had very heavy carbon deposits on top of the valves. I've been told this happens because of leaking valve stem seals but not sure so I 'upgraded' to these ford seals. I now have about 800 miles on the complete rebuild. I pulled the intake off the other day and noticed the carbon deposits were coming back. I even took the effort to polish the valves to help deter this from happening again. So if leaking valve stem seals causes this then the Ford seals have failed. Now this could obviously be a variety of reasons from user error to worn valves to seal fit to ??? but thought I would relay my experience. Cameron Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted September 20, 2008 Administrators Share Posted September 20, 2008 Addendum; Some issues regarding the “installation†of these seals has been noticed… The Felpro VITON stem seals were not designed for the L-series, but for Ford V-6 engines. They will work on the L-series and are desirable as they are shorter allowing more retainer to seal clearance, the Viton material is much more resilient and a longer lasting material vs the OE specified seals which generally a Poly Carbonate that becomes brittle over time. When installing the Viton seals, extreme patience and care is required. I’ve installed literally hundreds of those stem seal on L-series heads and learned the hardway, i.e. more than few sets of stem seals trashed during the learning curve. Here is my current procedure for installing these seals. 1) Always use the stem seal condoms over the valve stem to protect the seal from being cut as it passes over the keeper groove. For the L-series, I always cut those stem condoms down to half their length. 2) The top of the guide AND the inside of the stem seal need a thin film of oil. 3) “Carefully and gently†ease the seal down the valve stem till it contacts the valve guide. Now with even more care and precision, and bare hands, grab the metal perimeter of the seal and spin it while pushing against the guide. This will help just start the seal over the guide. This is not a 100% guarantee it will go one without any issues but it does reduce the tendency of the inner rubber to tear and bunch up on top of the guide as it is being installed. Trust me on this!!! 4) Now that you have the seal started on the guide, using your seal installer, (bare hands will NOT push these seals on all the way) the normal tendency is to push them on all the way! Resist that temptation with all your might as the Datsun guides will bulge the top of these seals out, sometimes off to one side leaving a gaping hole between the seal and the valve stem for oil to drain down the guide an into the port and this is also when those springs pop off. 5) Some of these seals are green, some are black, (no idea why the difference, its just what I’ve seen in all the ones I’ve installed, all the same part number). If you notice that the green or black portion has been overly stretched, evidenced by the white stretch marks near the metal shield surrounding the seal, the seal is no longer any good and needs to be replaced. 6) When installing these seals, it is imperative you have an extra set on hand as it is inevitable one or two will get boogered up during install. Some times I can build 5 heads with not one issue, then I can build up 2 heads in a row and end up trashing a couple seals per head. 7) Again, scrutinize the installation of these seals very carefully as they are very finicky and easy to screw up. For mild lift cams on engines that wont see more than 100,000 miles, the poly carbonate seals are a no brainer choice, in my opinion. Here are a couple pics of this seal improperly installed, spring has popped off… This pic below shows the bulging of the green rubber from being installed to far; This pic below shows the gap surrounding the valve stem as a result of the bulging from being installed to far down, i.e. there is more clearance between the valve stem and seal than there is between the valve stem and the valve guide itself!!! You can make out the top of the guide through that gap!!! Oil burner for sure!!! This pic is of the condoms and also shows a normal Viton seal, i.e. NO bulge and spring is intact… This pic shows the FelPro Poly Carbonate and the Viton seal side by side. You can clearly see the height difference. Link to comment Share on other sites More sharing options...
HowlerMonkey Posted September 29, 2008 Share Posted September 29, 2008 Sweet......ford comes to the rescue of yet another car marque. Back in the day we used ford "umbrella" seals on our big block chevys. Link to comment Share on other sites More sharing options...
eec564 Posted October 2, 2008 Share Posted October 2, 2008 BRAPP, you say these seals are very easy to mess up. For those of us rebuilding a motor and not using a high lift cam, are the O.E. style seals that much easier to install? That is, enough to warrant using the older, perhaps not quite as good, stock set in favor of a bit more user friendliness? Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted October 2, 2008 Administrators Share Posted October 2, 2008 BRAPP, you say these seals are very easy to mess up. For those of us rebuilding a motor and not using a high lift cam, are the O.E. style seals that much easier to install? That is, enough to warrant using the older, perhaps not quite as good, stock set in favor of a bit more user friendliness? Absolutely. If you don't need the shorter stem seal and 100,000-150,000 miles between overhauls is acceptable, I prefer the OE style seals. How many of us that "drive" our cars spiritedly actually put more than 100,000 miles on the engine before it gets torn down again for rebuild/upgrades? Link to comment Share on other sites More sharing options...
Careless Posted October 5, 2008 Share Posted October 5, 2008 just thought i'd mention that most FelPro nissan exhaust seals are Poly Acrylite and not Viton like their intake valve seals. Says so on their packaging bags! The Ford seals look like intake valve seals, but Viton usually doesn't have a problem with the heat that is transfered through the valves/guides upto the seal, so they will work good for that application. I found a neat way to resist damaging a seal while installing is to take your old seal and turn it upside down and put it over-top the new seal and hit that with a socket. also, cut a straw and feed it over the valve stem before putting the socket on it. the squareness and the rough casting of some shitty sockets will mar the stem and that's not a desirable thing. the seal against seal contact will prevent damage to the tightening springs and will allow the top of the new seal to slide down evenly and concentrically around the valve guide and valve stem. carefully move the valve down first, and then slightly pop it up like a millimeter to see if the valve will bulge itself. if it does, you went too far (too late, anyways!) and if it doesn't bulge up, then give the valve some action over and over again to make sure it stays that way. I've never had a problem with nissan valve seals doing it this way and it's the method I used the first time on a friends 1.2L Micra engine and it worked out fine. It may take an extra 20 minutes to do an entire head, but hey... works for me since I'm slow already! sucks that the cars rings are leaky though sweet little car. Link to comment Share on other sites More sharing options...
jacob80 Posted January 17, 2009 Share Posted January 17, 2009 One question. Would you guys recommend the Ford Felpro seals for an '83 L28ET that is driven fairly frequently with stock cam? If it is an upgrade then it is a no-brainer, but you speak of the stock being fine in some cases. Link to comment Share on other sites More sharing options...
JMortensen Posted January 17, 2009 Share Posted January 17, 2009 One question. Would you guys recommend the Ford Felpro seals for an '83 L28ET that is driven fairly frequently with stock cam? If it is an upgrade then it is a no-brainer, but you speak of the stock being fine in some cases. I have no love for the stock seals. I'd put these in any motor I built now that I know about them. Link to comment Share on other sites More sharing options...
jacob80 Posted January 20, 2009 Share Posted January 20, 2009 Alright, well, bought some seals and gave them to the machine shop Link to comment Share on other sites More sharing options...
WizardBlack Posted April 8, 2009 Share Posted April 8, 2009 Since this is a sticky on valve stem seals, has anyone confirmed that a .490/.480 Isky regrind will be OK with Isky springs/retainers on the Fel-Pro stem seals? Link to comment Share on other sites More sharing options...
JMortensen Posted April 8, 2009 Share Posted April 8, 2009 If you're talking about the Ford Fel-Pro seals, you should be good to go. Stockers would be iffy. It could be that the ISKY retainers provide enough clearance, but you should check it closely if you try to run them. Link to comment Share on other sites More sharing options...
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