Valve stem oil seals

[muzak]

Thanks for your .02. I could do just 1 at a time. But either way once the lock ring is off the valve is floating in there and several very experienced mechanics have told me you better have compressed air in there to keep it up just in case when you're pulling the old the seals off. I have a compressor that could do this, but I still don't have a valve spring compressor tool, that 's not hard to find, but a glow plug adapter for an air compressor is. All in all I would pay for an hour of shop time, it's those damn shop books that say 4 hrs. You don't even want to know what Norcal shop time is.

[wrngwae]

you can rent a valve spring compressor. and the valve to piston clearance at top of the stroke is less than a 1/4" so your valve spring compressor should hvae enough room for that. and if your piston is all the way to the top....there aint no way it is dropping in there. but if you put compressed air in that cyl it may push the piston down and if you loose that pressure your in trouble!!!!!!! try it manually put your crank at tdc,,,,,do cyl 1 and 4 rotate 180 than do 2 and 3.....

[muzak]

you can rent a valve spring compressor. and the valve to piston clearance at top of the stroke is less than a 1/4" so your valve spring compressor should hvae enough room for that. and if your piston is all the way to the top....there aint no way it is dropping in there. but if you put compressed air in that cyl it may push the piston down and if you loose that pressure your in trouble!!!!!!! try it manually put your crank at tdc,,,,,do cyl 1 and 4 rotate 180 than do 2 and 3.....

Pulling the cam yeah? You're right though if the piston is right at the top there shouldn't be enough gap to let it drop out of reach. I'll look for the right valve spring compressor cause the nearest rental would be about 100 miles.

One more (Warme) question: spoke to a Mitsu shop today and they indicated Mitsu may still make these seals. If they do are they that much better than NAPA OEM to last a lot longer?

[mikewarme]

What is prompting you to do all this? DO NOT USE AIR!!!! Like Tye said 1 at a time with piston at TDC. Fel Pro seals work great. I've used both OEM and Felpro seals. The Mitsubishi parts book shows same number MD000508 for both diesel (All years) and 2.6 intake all years or 2.6 exhaust 85 and up. Before 85 the exhaust seals were diffrent on the 2.6 motor. So go to Rockauto.com and order the seals. Again why are you doing this? Isnt this a new head? If it has not been rebuilt, chances are the valve guides are shot (typical for these). call me Zak. Hopefully early I start my grinding machine at 8am our time. 818 2683012

[muzak]

What is prompting you to do all this? DO NOT USE AIR!!!! Like Tye said 1 at a time with piston at TDC. Fel Pro seals work great. I've used both OEM and Felpro seals. The Mitsubishi parts book shows same number MD000508 for both diesel (All years) and 2.6 intake all years or 2.6 exhaust 85 and up. Before 85 the exhaust seals were diffrent on the 2.6 motor. So go to Rockauto.com and order the seals. Again why are you doing this? Isnt this a new head? If it has not been rebuilt, chances are the valve guides are shot (typical for these). call me Zak. Hopefully early I start my grinding machine at 8am our time. 818 2683012

Original '85 head was rebuilt along with the engine, only about 15k on the whole thing. It's just smoking blue a lot at idle when it sits which it hasn't done before. I don't think it's the guides but I know the seals used were just cheapy NAPA so there's a good chance that's the problem. I did get the rockauto Fel Pro seals, the ID on them is larger than the OEM seals from NAPA, but if they work...

I'm looking at the KD tools valve spring compressor: http://www.amazon.com/gp/product/B000FMM7CC/ref=ord_cart_shr?ie=UTF8&m=A30DGJTMHYAU9C would it work?

Do you guys know if the permissions are changed on the forum? Stayed logged in since I registered and now have to login every day, redirect to the index page doesn't work either.

[wrngwae]

i wouldnt get that one.


http://cgi.ebay.com/ebaymotors/UNIVERSAL-OVERHEAD-VALVE-SPRING-COMPRESSOR-TOOL-NEW-_W0QQcmdZViewItemQQhashZitem439eff3f66QQitemZ290430336870QQptZMotorsQ5fAutomotiveQ5fTools



this is close to what i have and works great.

[muzak]

You have the OTC? Just trying to go American if possible, no China. OTC is likely Tawain but that can do, saw it for 13 on ebay.

Aight, got that OTC sucker. If I do 1 cyl at a time there's no need to pull the cam right, just the rocker arm? And the Fel Pro seal set may be the ticket to avoiding holding the valve up. They don't require a seal installer and they don't fit inside it anyway, you just use the plastic sliders they give you and trim them properly. Next week this will get done.

[wrngwae]

yea you could do it with the cam in and the rockers loose al all getout. but it is not much to remove about 10 if i remember correctly bolts and you got full access. and you can inspect your cam towers too. and yoea you should have a little plastic cap to fit over your valve stems so you dont roll the seal while installing them.

[muzak]

Next time for sure the cam will come out. There's so few miles on the head now no need now though. It's just a good lesson in how mechanics keep you addicted to paying them. They put cheapy seals in there and want you to keep coming back for that $400 bill every 15K or so. Hopefully the Fel Pro seals will last a little longer.

Thanks for the help.

[wrngwae]

this is how i learned to earn a living. im a maintenance guy. when i was growing up i beat the hell out of my cars,,,,,who didn't,,,,,,, i could never afford to have them fixed so i started tearing things down and fix them. if it can be taken apart it can be put back together...........to hell with paying someone else other than for machine work.....now if i ever score a lathe or a good mill,,,,,,,,than to hell with them too....hahahahah