Checking Valve Spring Install Height & Seat Diameter
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- Опубліковано 13 вер 2016
- I needed to get this information so that I could pass it along to Comp Cams. They needed it to help set me up with the proper valve springs and retainers.
I thought this would be good information for those that needed it. If you're going to 'blueprint' an engine, you're going to need to be able to get this information.
As stated in the video, there is a special tool for this, but this method will work just fine.
The best place for answers to your automotive questions: www.ericthecarguy.com
Check out Comp Cams: www.compcams.com
Camera: Brian Kast
Thanks for watching!
Discussion about this video: www.ericthecarguy.com/kunena/...
Tools
Valve Spring Compressor: www.jbtoolsales.com/gearwrenc...
Lisle Spring Compressor Tool (the one I used in the video): www.jbtoolsales.com/lisle-3605...
Valve Spring Install Height Tool: www.summitracing.com/parts/cc...
Digital Caliper: www.jbtoolsales.com/general-t...
Related Videos
How To Remove Valves: • How To Remove and Repl...
• How To Remove Valve Sp...
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ETCG
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy. - Авто та транспорт
![How To Lap Valves, Spring Height Micrometer, and Reface Valve Stems [EXPLAINED]](http://i.ytimg.com/vi/ziPg0qUF4Lg/mqdefault.jpg)
![How To Lap Valves, Spring Height Micrometer, and Reface Valve Stems [EXPLAINED]](/img/tr.png)
Yes
This is a old post, perfect explanation of install height a seat diameter.
Please do another video for the rest of the spring details. Ie... coil bind and the other information needed to match springs to the cam.
😊 TY Sir
i love it when things get detailed and technical *no pressure*
GREAT timing! I'm just learning about cylinder heads in class and valves.
Eric, you are your valve's keeper!
Awesome video, it's the little things like this that kill a build if you forget about them
Mcm now Eric what a night so far
I was thinking the exact same thing! Now I can go to bed.
Ikr I nearly shit my pants doesn't help demo ranch had a vid aswell
I keep checking the channel to see if Eric put out a bulk of the Fairmont engine videos like Netflix. Let me binge!
Tap on the stem with a plastic hammer while holding up on the retainer to seat the keepers. It does change your measurement.
Cool. Thanks for that tip.
@ericthecarguy You should do a video on headgasket and head repair for an Oldsmobile Alero GL2 with the v6. Many different GM cars use this engine.
I think Eric would have to find an Alero and buy it first, before he could make videos about it. ;)
Nice way of figuring out the needed measurements. I would have probably ended up spending $100 on a tool I only need once. Keep the videos coming boss, can't wait until the next one.
great info. Happy Holidays.
hello Eric, i just bought my 4runner,everything is great, but the body roll is terrible,do you know how to reduce that ?thanks
Woohoo my Eric fix :)
That head is from the old engine or the dark matter? before or after final assembly?
if i have triples can i take spring out to make double? this was a circle track motor now i am putting a comp 490/490 lift cam iron eagle heads sbc 355 which does not require that big of a spring. This is a budget motor. thanks
Hi Eric, wanted replace valve springs on my A20A honda. Having to replace head gasket so whilst out I thought why not? But I'm struggling to find same but new valves, not available anywhere. So I was wondering using this measurement would I be able to order in new springs, based on size rather than part code? Or do I require additional information? Thanks
Great video 👍
Hi, I have some springs that are a match to a cam. The springs are shorter by .190 then the springs that are installed currently on the head. What the hell am I supposed to do ?
hey eric! i noticed that your videos are in 1080p 60fps. i think 60fps is a little unnecessary. have you ever thought bout shooting in 4k instead for the extra detail?
Lay a long straight edge across the tops of all the valve stems. On my heads, they weren't all the same. The valve stems were obviously all the same, but some of the valve grinds were deeper than others. That varied as much as .020" to .030". That was from a highly reputable head prep company. I stayed with stock valves, springs, and retainers and an "E" cam. Pedestal roller rockers had to be shimmed. No problems after 6,000 miles and quite a few spirited accelerations. Just for reference, 284 RWHP with 4.11 gears in a '66 Mustang coupe.
great video
thanks
awesome bro!!!
If you pull valves out be very careful the top of the valve steam on a good used engine will actually slightly mushroom. So if you let the valve drop but it gets stuck lift it back up and take some light sand paper and rub it around the top so you don't score the valve guides with the valve. Do not force the valve out.
Good job
When are you planning to have the car running? Would love to take a vacation and come up and drag race with you. Eric vs his viewers? Would make a cool contest for something.
That's sounds like a pretty cool idea.....
Good info. Eric. Thanks Bud. :-)
so when I get a block machined should I already have the cam, crankshaft pistons etc for the shop to use the measurements?
I did this so that I could get the correct valve springs and retainers. You'll need this info before you order them.
ERIC!!!! Get some Mitutoyo calipers.
how do you know if you should get a light or heavy compression spring?
Cam manufacturer can tell you what springs are required for your particular cam. Seat and open press, plus installed height.
maybe a quick video explaining the things that make this measurement critical and necessary for the rest of us.
As stated in the video I needed this information so that I could order the new valve springs and seats. Additional info in the description.
Is there any risk of damaging the head when you remove the valve spring using the hammer tool?
It's got a hole in the middle, so you're just pushing the ring and spring.. and those things are pushed all the time as valves are opening and closing.. so you should be fine.
No, it's designed to be used that way. ua-cam.com/video/qEe8C5u1LWg/v-deo.html
is this 0.02mm or 0.05mm caliper? im planning to get one of this digital caliper
currently, im using a mitutoyo calipers and it would take me a couple of minutes to verify my measurements
If you are going to buy a set of calipers buy mituoyo. Anything less is a waste. I'm sure there are better ones than Mituoyo, however for the 150 bucks they are superbly accurate for this type of work.
It's linked in the description.
That trick was genius. I've gotta remember that....
HEY ERIC MORE ELEMENT VIDEOS PLZ FOR STATER HOW TO DIAGNOISE A P0456 OR REPLACEMENT OF A EVAP CANISTER SYSTEM AND INSTALL YH2 RULE LOVE THE TOASTER
Well if I ever get that code I'll make a video.
Eric, have you thought about working at auto trade school? I worked at wyotech for years and you explain better than most instructors I know.
Thank you for that but my work as ETCG keeps me plenty busy as it is. It would be cool though.
How often do you just look at the valve springs and be like yeah I need new valve springs. Yes I could measure the depth of the tread of the tire but 90% of the times you can just look at it and say yeah I need new tires you might want to take a measurement if you're trying to sell the job. I can look at brake pads. I could measure the thickness of the brake pads but if they're thin and it's my truck I'm just going to replace them. Does this thinking hold true when it comes to valve springs. I'm not yet done my first valve spring job.
I'm in the market for a digital caliper and I was wondering what kind you are using Eric?
General Ultra Tech brand.
Mitutoyo is pretty much the best one you can get. Starrett and General are good alternatives.
Linked in the description.
I honestly don't know how you do it, using metric imperial measurements. I was trying to measure an imperial nipple earlier on but couldn't figure out how to convert from metric imperial to imperial imperial (the one with fractions). It came out as something like 149/400ths.
You just eventually recognize the decimal version of the major fractions, and if it's in between you play around with 32nds or 64ths until you get there. 149/400ths is .3725. 3/8ths is .375, which is one that you just know.
krtwood
Ahh, of course. I only really know a couple of the 8ths and quarters. Probably should learn the rest. Thanks.
You need to take into account that not measuring perfectly perpendicular gives a shifted reading. The difference is not much and when you measured in inches, you rounded off quite a bit so your numbers are probably correct. But when you went to millimeters, you got down to a resolution of 0.05mm. Which is expressing your approximation too accurately.
A better way to measure this would be using a transfer gauge, which is not terribly expensive
Pro tip(I'm not a pro) find old mikuni round slide carb springs swap them in to provide tention while you measure :)
Its hard to see how your holding the straight edge perfectly level up underneath the valve and getting a micro reading at the same time. It looks difficult. Nice video
When this car is done he needs to let mr. regular from regular car reviews review it. He's got a pretty sweet ford falcon he just built.
Not a sponsored video!!
1-7/8 would be 1.875, so I bet that's probably considered the nominal spring height. (Or, perhaps, with a 2" spring that has a 1/8" compression.) Likewise, 1-7/16 is 1.438 and 1-5/8 is 1.625.... So, I would also bet that the spring seat is a nominal size of 1-7/16 with a spring wire size of 3/16. Or maybe just "1-7/16 by 1-5/8".
I wonder if Ferd uses fractional sizes when designing or describing these parts? They certainly do with the pistons...
eric your doing it all wrong...... nice change of pace on a "simple" procedure. this is one of those things where being shown helps so much. thanks for all the videos.
Height mic is only 40-50 bucks cheap skate, love the Fairmont classic cool !ultimate sleeper
Sup eric
Here's a question for you! Can a car run without a battrey? thank you!
if you can get it started yes.
Thank you for your answer! I was just wondering because I saw a guy on youtube replace his battrey with a set of 12 volt compassorters. I was under the impression that if you ran your car without a battrey that it would burn the alternator up are it would just plan out shorten the life of the Alternator.
Well in his case the capacitors were acting as his battery because capacitors store electricity. The alternator can easily handle the cars electrical load. The battery is really only used for starting the car and running in accessory mode
Hey Eric, my buddy asked me if i could change a water pump for him on a 2005 5.7 hemi. The car was idle for about 4 yrs. When he brought it over i noticed the dipstick looked like it was burnt, it had lots of rust in the radiator and rust in the spark plugs. I was concerned because the water reservoir was boiling over. He assured me all it needed was a new water pump so i replaced it. The next day i baked it out of my garage left it running for about 5 min while i closed the g door, when i came out the engine was knocking. Took it to a shop they say it was extreme over heating. How can it overheat with a brand new water pump?
You did lap in those valves first didn't you? Can't help thinking that, either way, your still going to get the standard bag of springs related to how hot a cam you've ordered.
The heads will get reconditioned in an upcoming episode.
Thanks for the reply Eric, I guess it's all in the edit. If someone ordered their performance parts, and then reconned the heads, with the possibility of cracked seats needing inserting and cutting in or putting in hardened seats for unleaded fuel, they would get a surprise when their measured maximum spring length magically changed!
I dont know how critical the measurement is, but the keepers were not seated correctly because of lack of spring pressure, the height would be a bit off.
Perhaps a small two arm puller could be used to pull the disk up and force the keepers tight.
If im talking crap, im sorry.
The spacers on these are pressed on but you are correct, if they're loose it can offset the measurement. The easiest and most accurate method is actually the special tool I pointed out. It's also linked in the description.
You can't measure accurately if your probe comes in at an angle. You loose a few digits. I'd get one of those adjustable vertical (for holes) parallels) those are cheap. You put it in the right place, you adjust it to size, then, remove it, and measure it, instead of the hole. Like with bore gauges.
Who has seen the new comp cams camaro
( it's awesome in person )
Hey look an intake valve that the old guy at the machine shop said went missing.
Hello E.T.C.G from Poland , :-) is it possible to damage cylinder head while removing springs using this , "hammer assisted tool ", it kind of hurts me seeing it taking such punishment ;). Anyways keep up good work , big fun of your videos.
No. That's how the tool is designed to be used.
ua-cam.com/video/qEe8C5u1LWg/v-deo.html
thanks,for explanation, you forgot rag though ;).
Does anyone else see a face between the threads at 2:56 ????
how long can a car last?
(not should last but can last)
1/2 gen Cummins can go for almost 500,000 kilometers sometimes
VW, Ford, Chevy and Toyota have achieved production cars that have lasted way over 1 million miles for the average customer (in somewhat rare cases), one reaching 1.8 million IIRC but I can't remember who it was.
Diesel engines can easily last much longer than a gas but I don't know why as I'm not an expert on diesel.
than you guys for your answers.
my 86 cougar has 343k miles on the original engine. there is a 1960's mustang with over 6 million miles still running. you can make a car last forever as long as the body doesn't rot, but before too long it becomes more expensive then replacement.
(commercial voice) *BUILT FORD TOUGH*
LOL
BILD FERD TUFF
OHV old Technology
Is it me or does eric look younger in this videoñ
You put the old original wheels back on the Fairmont? Lol
this was probably filmed before the 5 lug conversion...
snipeish1 Nooooooooooooooo really?
hi Eric wonder if you are till me hi ?
nice hammer
ممكن ترجمة بلعربي
Im a cnc machinist and this is a horrible way to measure precision dimensions
F3ZM
First. Uhhh
What is this sorcery?
Nice way of figuring out the needed measurements. I would have probably ended up spending $100 on a tool I only need once. Keep the videos coming boss, can't wait until the next one.