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137 Posts
Arghhhhhh, deleted explicatives!
I am finishing up the porting job on a 2L head that came off a motor I acquired and low and behold the hole in the head where the No. 1 Intake valve guide goes is way oversize. I mean, I can drop a new guide right through it without any resistance. So, what to do now.
I guess first consideration is whether the head is cracked along the guide path. I don't see any cracks in the port or in the spring seat and for it to be that out of spec you'd think a crack would be obvious.
Assuming the head is intact and someone down the line opened up the guide bore too much any ideas as how to deal with it? Would it be easier/better to bore it out a bit more and instal a sleeve or to get some valve guide material and make an oversize guide to go in the oversize bore?
I do have another head but the idea of doing all the work over again.... At least it would come out better learning curve and all that.
Any suggestions from the collective mind would be very useful at this point of utter frustration.
Thanks,
David
I am finishing up the porting job on a 2L head that came off a motor I acquired and low and behold the hole in the head where the No. 1 Intake valve guide goes is way oversize. I mean, I can drop a new guide right through it without any resistance. So, what to do now.
I guess first consideration is whether the head is cracked along the guide path. I don't see any cracks in the port or in the spring seat and for it to be that out of spec you'd think a crack would be obvious.
Assuming the head is intact and someone down the line opened up the guide bore too much any ideas as how to deal with it? Would it be easier/better to bore it out a bit more and instal a sleeve or to get some valve guide material and make an oversize guide to go in the oversize bore?
I do have another head but the idea of doing all the work over again.... At least it would come out better learning curve and all that.
Any suggestions from the collective mind would be very useful at this point of utter frustration.
Thanks,
David