Re: Valve Spring Height
[Re: Cab_Burge]
#2633099
03/15/19 05:24 PM
03/15/19 05:24 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I just use the Summit height tool plus I do spring pressure also.. been fine to 8500+ rpm
Last edited by MR_P_BODY; 03/15/19 05:30 PM.
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Re: Valve Spring Height
[Re: MR_P_BODY]
#2633114
03/15/19 06:10 PM
03/15/19 06:10 PM
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Joined: Jan 2003
Posts: 9,996 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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To take it a step further, what is the latest thought on room to coil bind? I have heard more than.060 but less than .100, and if the spring is short on load in that range, a different spring is needed. Having more seat pressure than planned is much less of a problem.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Valve Spring Height
[Re: Cab_Burge]
#2633239
03/16/19 08:40 AM
03/16/19 08:40 AM
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Joined: Oct 2004
Posts: 3,097 back in Georgia
dthemi
master
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master
Joined: Oct 2004
Posts: 3,097
back in Georgia
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Running close to coil bind is to crush harmonics out of the spring cycle, and often just a necessity of room under the retainer . The goal, changes where, and what you set up. Spring longevity, and performance, are two different goals. High HP na goal engines run really high intake pressures, and very low exhaust pressure as one example. I've seen longevity goal run a 2.3 set up spring where 2.1 would have worked at near coil bind. The cam never challenges the spring, Not enough action to start a harmonic, and they go 200 passes on what would be 50 at 2.1. They do pay for it in needing high quality valve gear.
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Re: Valve Spring Height
[Re: 71birdJ68]
#2633450
03/16/19 07:58 PM
03/16/19 07:58 PM
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Joined: Aug 2003
Posts: 43,163 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,163
Bend,OR USA
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Guys, I just wanted to know which brand. Starrett, Craftsman, some others I can't remember now and Mititoyo is what I use and have now on micrometers, both inside and outside there are a lot of other good brands out there also, the big thing is to have the set up standards and use them to insure the accuracy of each gauge
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Valve Spring Height
[Re: 71birdJ68]
#2633554
03/17/19 09:41 AM
03/17/19 09:41 AM
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Joined: Nov 2004
Posts: 3,544 Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Guys, I just wanted to know which brand. That answer would be PAC. Twice as much as others, 100% quality piece.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Valve Spring Height
[Re: Cab_Burge]
#2633588
03/17/19 10:49 AM
03/17/19 10:49 AM
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Joined: Sep 2003
Posts: 19,396 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,396
north of coder
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Guys, I just wanted to know which brand. Starrett, Craftsman, some others I can't remember now and Mititoyo is what I use and have now on micrometers, both inside and outside there are a lot of other good brands out there also, the big thing is to have the set up standards and use them to insure the accuracy of each gauge also, don't forget : use them with CARE. don't pick them up to use with gritty, greasy hands. this also helps keep you from dropping them. store them as SURGICAL INSTRUMENTS. don't just toss 'em in your box. quality measuring instruments come in a storage container. that is where they belong. keep them CLEAN. gently wipe them clean after each use, and use the appropriate lubricant at the recommended intervals. do this, and these tools will repeat measurements every time and last several lifetimes.
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Re: Valve Spring Height
[Re: 71birdJ68]
#2633775
03/17/19 05:35 PM
03/17/19 05:35 PM
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Joined: Nov 2015
Posts: 876 Missouri
jwb123
super stock
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super stock
Joined: Nov 2015
Posts: 876
Missouri
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What is a snap gauge? Are the ones from ProForm any good? It is shaped like a tee and when you twist the handle it locks the measurement you have, They have a weak spring inside the tool, so you hold the retainer up snap the tool to record the measurement, and then lock it, and then measure with a dial caliper. Also works to measure cylinder bores, main and rod bearing bores, etc. Every engine builder should have one. https://www.googleadservices.com/pa...vdkIrhAhWDn4MKHepGBPIQ9aACCDY&adurl=Proform ones would be fine.
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Re: Valve Spring Height
[Re: 71birdJ68]
#2633825
03/17/19 08:28 PM
03/17/19 08:28 PM
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Joined: Dec 2004
Posts: 10,553 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,553
Rittman Ohio
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Ok, I know what you are talking about. Are the ProForm mikes any good? There are reviews on each one that Summit sells just follow the link Andy posted. Seems like the PAC unit is very nice and the others will do the job but I would check them against a known micrometer Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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