valve guide/ head gouges

[Alex Bland]

first of all, i tried to remove the first guide without looking up how to do it the easy way, so of corse now this one is messed up and all the other ones are out. can i drill out the guide? ive tried everything to get this last one out but i messed it up pretty good, also i put some good gouges in the side of the head ill post pictures i want to know if its bad or not. i dont see how it would cause any harm. thanks

 

[BogusSVO]

Yes post pics of the guide bore.

How did you remove the guides?

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

If the guide bore is too distoted, gouged, the head will be junk

If the gouges are deep and full length, oil can pass between the guide and guide bore.

You do know the seats will have to be cut after the new guides are installed, lapping the valves will not do.

 

[Alex Bland]

Yes post pics of the guide bore.

How did you remove the guides?

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

If the guide bore is too distoted, gouged, the head will be junk

If the gouges are deep and full length, oil can pass between the guide and guide bore.

You do know the seats will have to be cut after the new guides are installed, lapping the valves will not do.

well the first one is the one i messed up on, all the other ones i tapped/screwed in a bolt then on the bottom i put a bolt that fit in and hammerd them out. heres my mess from the first one, messed up the bore only has one little spot on it thats bad.

sorry that not everyone is the worlds best speller, or good at using grammer.

 

[BogusSVO]

Not good... Not good at all

I can not say if the head is good or not at this point, it is hard to tell from a few pics.

It needs to go to an experanced machinist, that understands valve guide work in alum heads.

That one guide bore may have to be honed and fitted with an OS guide.

 

[Alex Bland]

Not good... Not good at all

I can not say if the head is good or not at this point, it is hard to tell from a few pics.

It needs to go to an experanced machinist, that understands valve guide work in alum heads.

That one guide bore may have to be honed and fitted with an OS guide.

well if its bad, its bad. sometimes you mess up =p
got to see if i can find someone who does head work around me.

This was the head i was going to build someday, but i still have the one on my talon right now.

 

[steve]

What happened here?

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Was the cam journal ground away when you got it or was that something you did?

 

[jw4free]

Yeah, looks like the cam journal got the crap beat out of it too.

Definitely due for a professional overhaul. Add a valve job, or at least lap the valves to the seats to get a good seal.