SBC Valve Guide Installation

[zorrlander]

Your lubricant is that just gasgacinch?

[ATC250Rguy]

@zorrlander Its a Sunnen press fit lubricant, but i can see why you ask the can looks pretty close. Gasgacinch is actually a milky transparent color and its used to seal and aid in the removal of gaskets

[knowtwodrugs]

Very nice videos! If you take requests, I'd like to see a video about the process involved with epoxy-ing the cylinder heads.

[ericjen123]

just a quick question John, I'm replacing my duel springs with a beehive spring. The Beehive has a smaller bottom O.D. so I'll be using a valve spring locator under it. I have a part 4705-16, just wanted to know if a Gen1 SBC has the same size vlave guide ball as an LSx? .570??? thanks

[CRACKERonRM2FIDDY]

how much would it be to have Valve Guide Seals done?

[Timothayyy]

I was always taught to do the guides with the head hot, like after put in the oven. Supposed to prevent cracks.

But I guess you dont have to do that?

[MasterCrash2009]

cobra428bigblock robysunnen

if u ppl want to talk shit on hear when the guy has been doing this kinda work sence the 60's i think then u should just go fuck ur selfs

great work john i love what u do

[mongo5888]

Great work man. Nice vid. :)

[hppyadam]

hi i got 1989 gmc with a 5.7 350ci.and whan i start it it smokes i think it is the valve guides but can i drive it this way or will the motor blow. thanks

[carcrusher001]

@hppyadam yes you can drive it like this, on the oplder GM v8s, after they have been sitting the night or whatever, like when there cold, oil seeps past the worn out valve seals/ guides, and into the cylinder, or on the top of the valve, or into the exaust and when you start it, it smokes for a couple of seconds and then stops. this is perfectly normal for these engines, so dont worry about it. 350 are very durable, and reliable engines. I know you posted this 7 months ago, but hope this helps

[rfhracing]

What guide clearance do you suggest for 11/32 stems?

[robysunnen]

Ciao john in pratica hai messo una nuova boccola guida valvola su una guida valvola .vecchia?

[fuckyoda]

i have a question, my valve guides are bad on my 305, the spark plugs turn black. do i have to go through this process or and i just take them out and put new ones in?

[joness105639]

The easiest thing to do is replace the valve stem seals.

[fuckyoda]

and how would i do that?

[joness105639]

Well assuming its a pushrod engine, its fairly simple. Get a valve spring compressor (not the c shaped kind, the kind that doesnt require the removal of the cylinder head) and some rope. Remove the spak plug in that cylinder turn the engine untill it is on the compression stroke for that cylinder. Next stuff that cylinder with the rope. Now use the spring compressor to remove the spring. Once the spring is off remove the old stem seal, and install the new one.

[joness105639]

The stem seals fit like a cup over the guides and wipe excess oil off the valve stems. they do wear out more often than the guides. You can solve most of carbon deposit issues this way. Eventually the guides will wear out of course.

[cobra428bigblock]

I wouldn't go to You Tube to ask for automotive help. There are many reasons your plugs could be black.....the main one is that your A/F mixture is too rich....

[mongo5888]

Then why did you even watch this video?

[ytmachx]

I'm surprised about the rough ream job on the guide inner. My guess, this is not your best work.

[MrGuvEuroman]

John you rock keep yr vids coming please :)

[1972FordF100]

This is interesting to see how its done almost similar I'd assume to when my local machine shop put guides in my fe ford heads. Im wondering if you could do a valve seat video as im interested to see how those are installed.

[phobiablack]

Its essentially the same process, You cut the old seat out and hammer the insert back in.

[zapwatt]

OK so I'm a bit new to valve guide replacement so I have a question; Why were the old guides not drifted out but milled instead?

[fiatnutz]

The original guides are integral to the casting. OE's simply drill a hole in the cast iron and call it a day, however in the reman world we have to drill & ream for a replacement guide when the integral guide is worn out.

[hpwan2]

@fiatnutz

Hi Fiatuntz, great video!

does this mean that you actually milled/destoryed the old valve guides and insert the new guides into the position regardless if there is any remaining of the old guide -- as long as the size of the whole is correct, the new guides will sit there nicely?

[ipissed]

@zapwatt because these guys are not thorough. you and i are used to working in aluminum by now but as far as i am concerned if you crack a head its toast anyways, but without a doner you are missing out. new original guides are the way to go. it prevents out of line and ovaled bores like you can see in this actual video when he tests the last guide. but i have to say that the workable head is only as good as it is.

[ls6guy]

nice work got anymore on the chevy small block v8