The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Changing valve seals using air chuck: If I have air leaks are the heads toast?

**WorkinLonghorn** · 02-18-2007, 09:07 PM

I agree with above. You probably don't want to hear this now that you've finished the seal job but I always hear (from machinists) that a motor with shot valve seals usually is in need of guide work anyway. If this was mine,I woulda taken the heads off and de-carboned etc.

02-18-2007, 09:07 PM	#14
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,887	Re: Changing valve seals using air chuck: If I have air leaks are the heads toast? I agree with above. You probably don't want to hear this now that you've finished the seal job but I always hear (from machinists) that a motor with shot valve seals usually is in need of guide work anyway. If this was mine,I woulda taken the heads off and de-carboned etc. __________________ '69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.