valve guide installation

[mjjstang]

So I was reading the fsm and they show you heating the head in oil, and also honing and whatnot. My idea was:
1. heat the head in my oven to the right temperature (no oil)
2. tap out old guides (some say drill out, fsm says tap out)
3. While still hot tap in the new ones. (some say liquid nitrogen, fsm does not)

only thing is, do I really need to ream the wall of both the head where the guide inserts, and the inside of the guide? I don't hear of people doing that.

[infinitexsound]

take it to a machine shop... dont waste ur time.....

you have to heat the head... to a certain temp for how ever long....... then u bang the shit out of the guides.... on a vice.... and drive it out... then u reheat the head... pull the cold guides and bang them in... they should be tapered... so they dont go so far in..... i just say screw it and have a shop do it ... it wouldnt be that much...vs reheating every daymn time for every guide...

[mjjstang]

I would think that the head would stay pretty hot for a few guides at a time, but at any rate I heard it was expensive labor, I will have to call around though.

[JVD]

I'm having it done right now. I'll let you know what the labor cost is when I pick it up prob later this week.

But ya, the first machine shop couldn't do it, because they didn't have the proper machine to heat it or something. I don't know. They told me they were gonna press them out. That's when I took it to another shop. LOL.

[infinitexsound]

alluminum gets hot pretty fast... but it also dissipates heat fast also...

[lonelydrifter]

just take it in. they have the tools to do it right and you will get your shit back quickly.

If you really want to learn how it is done ask them to let you watch. Or at least practice on a junk head or something.

[RedtopTech]

I also rec. a machine shop. However if you decide to give it a go on your own then i rec putting your guides in a freezer. If you want to spend an extra 20, some dry ice will make it even easier. Do you know what kind of driver your going to use?

[WangonwWarrior]

I took mine to a machiene shop and they did it for a well spent $200 that i did not mind paying. Just my advice

[mjjstang]

machine shops in my area are telling me they don't know how to do it, its not worth doing and it would take too long, I cant find a fucking machine shop around that will do this for me. and they say the economy is bad, apparently it is not in Detroit since everyone is too busy or doesn't want any money. I would gladly pay 200.

fucking asshats scratching their head (noggin) when I tell them I want my head (of the cylindar variety) resurfaced.

guy told me these bronze guides, (bought the jwt) had to be honed afterwards to get the valve to slide easy. is this correct or should they fit right in. I was going to liquid nitro these things but I guess if I can have a shop do it, Ill go that route.

[infinitexsound]

detroit motor city doesnt know how to do valve guide jobs wtf!?!?!?!?!??!
keep asking around.... u can hone it with sand paper.. like 800 wet... probably dont even need to do that... hot head.. cold guides.. press em in ... this is the same method ferrari uses to press in valve seats.... come on... keep asking your bound to find a shop...

[mjjstang]

^^ yah that city, the same one who can not rethread a 12mmx1.25 stud. ("sorry bud dont have anything that big", its about the size of my pinky) I think this state is the fattest and poorest for a reason, lazy motherfuckers live and run around here. Don't mess with our gangs though, cuz they WILL make your city the deadliest as well.