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Which valve spring height mic #2960196 09/02/21 03:27 AM 09/02/21 03:27 AM
Joined: Jan 2003 Posts: 8,180 Detroit, MI CokeBottleKid OP master
CokeBottleKid OP master Joined: Jan 2003 Posts: 8,180 Detroit, MI	Trying to measure a stock magnum head so it has a .930" diameter by .230" tall step. The brian tooley mic doesn't fit over the step, will the 1.4-1.8" mic from Comp fit? Looking at you Dwayne :P https://www.summitracing.com/parts/cca-4928

Re: Which valve spring height mic [Re: CokeBottleKid] #2960230 09/02/21 08:49 AM 09/02/21 08:49 AM
Joined: Nov 2015 Posts: 879 Missouri J jwb123 super stock
jwb123 super stock J Joined: Nov 2015 Posts: 879 Missouri	use a snap gauge and a dial caliper, fits anything.

Re: Which valve spring height mic [Re: jwb123] #2960302 09/02/21 01:35 PM 09/02/21 01:35 PM
Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt.	Small diameter retainers will sit down inside the recess of a std height mic. The recess is usually .150” deep, so you would deduct .150”(or however deep the recess is) from whatever the reading on the mic is(1.800 reading is really 1.650 IH). So, when working inside the recess........ the range for the mic has to go at least .150” taller than the actual installed height for the parts your working with. As mentioned, you can get it done with a snap gauge and a caliper. Even just a caliper will work okay on some heads. I have next to zero experience with Magnum heads, so I can’t say which mic will clear the factory spring step. If I were trying to assemble the heads and my mic didn’t fit, I’d just measure it with something else. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

Re: Which valve spring height mic [Re: fast68plymouth] #2960307 09/02/21 01:47 PM 09/02/21 01:47 PM
Joined: Jan 2003 Posts: 16,928 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,928 NC	I have been using a snap gage for years. It gets the job done. I do have to be careful since the snap gage diameter can interfere with the step in the retainers. And similar with the valve spring pocket in the heads. So try not to have the snap gage at an angle. I should just buy the spring height micrometer, but I have read some not so good reviews of the less expensive ones. 1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1

Re: Which valve spring height mic [Re: CokeBottleKid] #2960322 09/02/21 02:49 PM 09/02/21 02:49 PM
Joined: Aug 2003 Posts: 43,228 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,228 Bend,OR USA	Small outside calipers work fine for me, quick, fast and easy Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Which valve spring height mic [Re: fast68plymouth] #2960509 09/03/21 03:37 AM 09/03/21 03:37 AM
Joined: Jan 2003 Posts: 8,180 Detroit, MI CokeBottleKid OP master
CokeBottleKid OP master Joined: Jan 2003 Posts: 8,180 Detroit, MI	I'm staying with a friend and they don't have much, the retainer step is far too small for a snap gauge even if they had one. I can get calipers in there just barely but I'd prefer to use a height mic. Gonna see if the comp one works, will let you know. If the beehive retainers fit a bit deeper that will be a bonus IMO there's not much room, if the new one doesn't clear the step I was going to find a local machine shop and borrow some valve spring shims to space the height mic above the step. Last edited by CokeBottleKid; 09/03/21 03:38 AM.

Re: Which valve spring height mic [Re: CokeBottleKid] #2960551 09/03/21 09:22 AM 09/03/21 09:22 AM
Joined: Jan 2003 Posts: 16,928 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,928 NC	what is the difference between the height mic for beehive springs? https://www.summitracing.com/parts/cca-4930?rrec=true

Re: Which valve spring height mic [Re: 440Jim] #2960723 09/03/21 05:18 PM 09/03/21 05:18 PM
Joined: Jan 2003 Posts: 8,180 Detroit, MI CokeBottleKid OP master
CokeBottleKid OP master Joined: Jan 2003 Posts: 8,180 Detroit, MI	Like Dwayne eluded to the smaller OD of the beehive retainer can drop in the recess on a standard height mic. So I imagine the beehive mic has a smaller upper OD to catch the smaller retainer Last edited by CokeBottleKid; 09/03/21 05:19 PM.

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