Do you need to lap the valves prior to installing them? Or can you just drop the new ones in and put everything back together?
2007-03-29 10:58:34 · 6 answers · asked by bob 2 in Cars & Transportation ➔ Maintenance & Repairs
To clarify, I know HOW to lap valves, but I don't know if I HAVE to. I'd rather not go through the process of buying a tub of coarse compound, a tub of fine compound, and a thing of blue dye just to use once, throw it on the shelf, and forget I have it. Mechanics tell me I should just bring it to them, cuz I'm an incompetent retard. But the parts guys say I don't need to, but most of those guys don't even work on cars, so do they really know?.
2007-03-29 12:19:22 · update #1
Now-a-days, just drop them in. (lubed of course)
The tolerences of manufacturing are much better today than they were in the past.
2007-03-29 11:06:06 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 1⤋
Don't lap them. That's an old way to make burnt valves seat a little better but it's not good for new valves because the point where they contact the seat shifts a little when the engine warms up and the uneven surface it leaves behind will shorten the valve and seat life, and disrupts the fuel/air flow. If you have the heads off a good way to check the seating is to pour gummout into the chambers and see if it leaks past the valve seats.
2007-03-29 12:49:18 · answer #2 · answered by Nomadd 7 · 0⤊ 1⤋
The section itself is decrease than $a hundred. this is somewhat rubber gasket that is going inbetween the valve conceal and the engine block to make a good seal between the midsection and astonishing of the engine. counting on which engine you have (the 4 or the V-6), this is an extremely straight forward fix with approximately an hour's exertions because of fact the valve conceal is on astonishing. in spite of if, some (very few) vehicles require you to get rid of the motor to get to the conceal. if this is so, 7 hours seems approximately precise.
2016-12-19 16:28:07 · answer #3 · answered by ? 4 · 0⤊ 0⤋
I take it you had the head repaired or replaced? Go to parts store get small tube of valve seating compound. If you do have the tool to spin them in hand take a rubber hose and attach at the top of valve while in head and then apply a small amount of of compound are valve seat and spin the hose with your hands to seat. That way you can see where the valves are seating and if proper.
2007-03-29 11:32:50 · answer #4 · answered by Steve 5 3 · 1⤊ 0⤋
You should lap them for pattern check.
2007-03-29 11:28:21 · answer #5 · answered by done wrenching 7 · 0⤊ 0⤋
you have to make sure they will seat before you drop them in,by doing so,you have to make sure the seat is good and clean.
2007-03-29 11:28:56 · answer #6 · answered by Anonymous · 0⤊ 0⤋