Are these heads screwed up?
Thread Starter
Teching In
Joined: Jun 2011
Posts: 18
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Are these heads screwed up? I picked up an LQ9 from a guy who had already started "cleaning up" the heads. He took too much off in the bottom right corner of the intake runners and now there is a small ridge in the transition into the vertical wall of the intake runner. I will try to attach pictures. Would you guys use them? Don't really want to port them. He only touched the intake runners. Thanks.
Looks like the individual polished the runners...A MAJOR NO-NO !!!
If these heads are to be used I would re-sand them with a coarse (36 or 60)
grit cartridge roll on a die grinder. Exhaust ports and combustion chambers
are OK to polish just NOT the intakes.
If these heads are to be used I would re-sand them with a coarse (36 or 60)
grit cartridge roll on a die grinder. Exhaust ports and combustion chambers
are OK to polish just NOT the intakes.
Thread Starter
Teching In
Joined: Jun 2011
Posts: 18
Likes: 0
I have the opportunity to pick up a set of 243 heads that have just been milled .010. I could pick those up but was worried about the CR being a little high. I know I could bleed some off with the right cam, but I don't want to have to turn a lot of rpms to make power. I also want to be able to run pump gas with absolutely no problems.
I have the opportunity to pick up a set of 243 heads that have just been milled .010. I could pick those up but was worried about the CR being a little high. I know I could bleed some off with the right cam, but I don't want to have to turn a lot of rpms to make power. I also want to be able to run pump gas with absolutely no problems.
I wouldnt use them.....like stated above your not suppose to polish the intake runners, I would get the 243's their the best bang for the buck head and only being milled .010 youll be fine with compression.
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