How to Reseat / Lap Valves (Basic Valve Job)

In this video i'm explaining how to reseat or lap valves in a flathead or overhead valve engine. Also can be called a valve job, but this is not a complete valve job. I also used to much valve grinding compound, it does not require a whole lot. Usually when a engine needs this done is when a engine has low compression that is found to be leaking around the valves, or sometimes a engine will backfire do to the valves not closing completely/properly. Thanks for watching.

Category:

Autos & Vehicles

Tags:

• how
• to
• reseat
• lap
• valves
• stroke
• basic
• engine
• repair
• briggs
• and
• stratton
• rebuild
• internal
• combustion
• gasoline
• valve
• job
• flathead
• ohv
• overhead
• automotive
• how-to
• instruction
• tutorial

[hg70]

great vid champ, keep em coming.

[fnaguitarplayer9]

@hg70 thanks! got a bunch of videos to make this spring/summer! thanks for watching!!!

[Mikej1592]

Im a lazy type, if I ever lap my own vavles I'd probably try to clamp it in a cordless drill. a cordless would have less torq than a plug in version and I would have less risk of damage I imagine. would probably put some tape on the stem also, eah, the odds of me doing it at all are pretty slim right now anyway but its fun to imagine having the time to do it. :-)

[fnaguitarplayer9]

@Mikej1592 hahahaha i hear ya haha. oh OHV motors you can chuck up the valve stem in a drill, while the valve is in the head, alot of people do that, especially on bigger engines like V8's, saves time, but i don't think it does quite as good, i did it one time on a OHV briggs, and it just didn't feel right to me haha i'm sure you could find a way to get a suction cup in a drill and do the same for a flathead engine too haha thanks for watching!

[20rich02]

Well if anyones goin to use this vid for learning purposes then go on and do that `cause the guy does know what he´s doin`. His advise and instructions are advisable to others. Have no fear you can deal with your valves here. Titanium valves are used in modified engines or newer cars that have alot of horses, Valves as such are usually used for rpms over 8000rpm thats why they´re also light weight. And yes grinding them is NOT a good idea at all. 6 valves would run about 800-900 bucks.

[fnaguitarplayer9]

@20rich02 thanks! thanks for watching!

[budel87]

idiota



[fnaguitarplayer9]

@FuzzyMcButterWink i hear ya, glad my video helped! thanks!! and thanks for watching!

[FuzzyMcButterWink]

Never knew how to do a valve job and I been twisting wrenches for 20+ yrs. I do now though. Good Vid Dude!

[1972FordF150]

@TheKillgore521 What the hell are titanium valves?