Spring height micrometer.. doing something wrong? Or more CompCams QC garbage?
#1
Spring height micrometer.. doing something wrong? Or more CompCams QC garbage?
I don't think I'm doing this wrong.. pretty sure Comp is still just selling more garbage...
The retainer doesn't fit into the bore.. it just sits on top of the bore.
I really just want to get the car done but I don't think I want to skip the height check.
This is the proper beehive #4930 micrometer from Comp Cams:
The retainer doesn't fit into the bore.. it just sits on top of the bore.
I really just want to get the car done but I don't think I want to skip the height check.
This is the proper beehive #4930 micrometer from Comp Cams:
#3
It's the wrong one? Or its defective?
This is what Comp sells for their beehive springs. I think I can bore this out a bit with a dremel sanding bit or stone?? But then I'd be trashing a $85 tool if I screw up... Here's how "off" it is:
16.21mm retainer
16.03mm tool bore
I have digital calipers and just searched google for a telescoping gauge and not sure really how to do that..
Last edited by Javier97Z28; 01-10-2008 at 06:48 PM.
#4
you put the telescoping gauge under the retainer and in the spring pocket. then tighten it and pull it out....check it with the calipers and figure everything out. It just alot faster when you check every one.
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
#5
you put the telescoping gauge under the retainer and in the spring pocket. then tighten it and pull it out....check it with the calipers and figure everything out. It just alot faster when you check every one.
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
Speeddemon's spring heights were all over the map on his heads.
#6
Well I would find the gauge, that thing you have is a PITA...it will work, but take forever.
Are the heads off? just make sure the same valve stays in the same hole in case the valve job is sunk or somthing odd and you need to shim a few
Are the heads off? just make sure the same valve stays in the same hole in case the valve job is sunk or somthing odd and you need to shim a few
#8
Hold everything here, this isn't a big deal. I had to machine mine out some for the retainer shank to fit. Used a step-bit.
My new PAC-1518s are all on now.
WD
My new PAC-1518s are all on now.
WD
Last edited by The Engineer; 01-10-2008 at 07:15 PM.
#9
you put the telescoping gauge under the retainer and in the spring pocket. then tighten it and pull it out....check it with the calipers and figure everything out. It just alot faster when you check every one.
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
I'm sure you are probly just checking one.....just dremel it out if you think it will work. just be sure its hitting where it should
#10
I don't see the big problem with those tools. I checked all 16 valves with mine. It was a bit time consuming but no big deal. And I don't see a telescoping gauge being as accurate since it will only be pushing up on the retainer on one side, and that assuming you can get it out of there without moving it at all.
WD
#11
Comps listing of this part is kinda crap. That is the spring mic for the LS sized valves 8mm not the bigger diameter valves we have. Should have gotten the regular spring mic not the "beehive" one. I had the same problem.
#12
Well, that explains it dude. Thanks man, I'll just bore this one out like Engineer described!
#13
I used a regular spring mic. The 795 retainer drops down onto the 1st ledge instead of sitting on the top like a larger retainer would. I simply measured the distance from where the retainer was supposed to lay to where it was laying and corrected the math.
#15
lol this beehive micrometer is a joke...
I bored it out to fit the retainer.. it sits on the machined step.. not the upper lip. One would assume comp corrected the readings for the SMALLER retainer of the beehives.
Nope.
Getting 1.94 readings from the micrometer
The inner lip is about .14x (can't seem to get an exact/consistent reading w/ my calipers, gonna try the washer method tomorrow).
So that figures to about the 1.80 install height I believe Lloyd puts them at.
So I paid extra for a beehive micrometer that doesn't work any better than a standard micrometer. Nicely done comp cams.
I bored it out to fit the retainer.. it sits on the machined step.. not the upper lip. One would assume comp corrected the readings for the SMALLER retainer of the beehives.
Nope.
Getting 1.94 readings from the micrometer
The inner lip is about .14x (can't seem to get an exact/consistent reading w/ my calipers, gonna try the washer method tomorrow).
So that figures to about the 1.80 install height I believe Lloyd puts them at.
So I paid extra for a beehive micrometer that doesn't work any better than a standard micrometer. Nicely done comp cams.