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how to use a feeler gauge on valves

W and 4 in. It's a good practice on these bikes (but not absolutely necessary) to have two feeler gauges for the intake and two for the exhaust. 99 $9.19 $9.19. First remove the valve cover to access the valves. Feeler gauge set. Slide the feeler gauge in as shown. If this is the case, you'll need two feeler gauge sets -- stick the smallest permissible feeler gauge in the gap for the valve you are not measuring at that instant to prevent sea-sawing of the tappet from messing up your measurements. CTA Tools A308 Offset Valve Tappet Gauge Set. It usually applied to set the valve clearances between the rocker arms. Then the gauge should be able to go back in with little trouble. Choose the 32 Blade Feeler Gauge when you need to precisely measure the clearance between two parts.The durable and corrosion resistant stainless-steel blades range from 0.015" - 0.035" for a wide range of applications. The clearance is correct when the gauge is a close sliding fit between the two parts. Just wondering if there are any other common tools or items that can be used to adjust valve clearance. I watched online on measuring valve clearance and I understand how to do it by taking the feeler and going under the cam lobe. If you can slide a feeler gauge around when checking a clearance, not matter how tight it feels, the the clearance has to be larger than your feeler gauge. But I also wrote that on vintage overhead twin cam engines, shims are often used instead, offering, “I may cover this when I [adjust the valves in] my Lotus Europa engine, as its twin-cam head uses shims.” That time is now. The most common causes are the valve hit a piston, the valve lash is too loose, or there is a lifter issue. It can be difficult to get it exactly right, but these tools can be super helpful. I may use a digital calipers to see what the feeler gauge measures as I let my feeler gauge get into too much weather. This thread is archived. Adjusting valves with a feeler gauge requres a certian 'feel'. Valve adjustment with no feeler gauge? 99 View Wishlist Added to Wishlist General 26 Leaf Feeler Gauge, 3-in $9. 7 comments. You will need to maneuver the feeler gauge in the thin gap between the rocker adjustment screw and the top of the valve stem. 1/2" from the end .. Hello, I am currently stuck out of town and I wanted to adjust my valves but I can't find my feeler gauge, is there any way to do it without? The trick is to have two feeler gauges, one for each valve. Widely used in industries like automotive, medicine, aerospace, oil and gas, feeler gauge is considered as one of the essential tools in day-to-day work. A thin coat of oil on the feeler gauge blade helps it slide better. I've used go/no-go feeler gauges and didn't feel comfortable with the results. set of 4" x 1/4" feeler gauge blades, thickness.002" through.015" 1/4" wide gauge blades can be used to check valve clearances of small diameter bucket and shim type valve trains $14.34 Lang Tools® 16 Offset Blade Tappet Feeler Gauge (316A) Feeler gauges come in various size ranges and can be useful for measuring gaps and slots in machined parts. When adjusting the valves, it's very important to use two feeler gauges. 21-06-2010, 09:14 AM #2: Hulley72 . When you need an exact gap, thickness or 'feeler' gauges are the perfect help. i got a metrical feeler gauge , i was wondering how to use it and the specs for lifan 140, the smallest is .04mm on my feeler gauge , After stuffing valves up i figured better to have it for future. How to use a thickness ('feeler') gauge What is it? Lisle LIS68050 valve feeler gauge has … Feeler gauge Feeler gauges are made up of several thin strips of metal, each machined to a specific thickness for use in setting the proper air gap on breaker points and for measuring valve clearances on cylinder heads. Brass feeler gauges are also available for measuring the gap on magnetic inductive pickups in electronic ignition. Leave the feeler gauge between the valve and rocker when tightening the locknut to prevent the gap from changing. Thickness gauge with all the different blades out: Gaskets can be made using automotive gasket material (try to use same thickness) and or then metal like shim material or aluminum from soda can. Then you know how far off they are to insert the correct sized shim.. for free play again. My thing is.. none of my gauges fit.. For example the exhaust side on my bike calls for .20 - .25 to be in spec. I can take my .05 feeler and it doesnt fit. If you’re not familiar with how to use a feeler gauge, then take it to a shop and let them handle it. Moreover, it gives an accurate size of the gap or clearance between two machine elements. A feeler gauge is a tool that is used to measure gap width. engines should require a firm pull with the thumb and forefinger. 99 View Wishlist Added to Wishlist View Wishlist Added to Wishlist View Wishlist Added to Wishlist View Wishlist Added to Wishlist DETAILS. The valve clearance is extremely important. As long as the pushrod spun freely, you can check lash. I used to work with a BMW mechanic in the airhead days who wasn't satisfied with his valve clearances until he got a noticeable groove in his feeler gauges. Check with the engine builder or cam manufacturer for the correct lash. Sears' automotive valve clearance gauge set is sufficient for the job, assuming you want to adjust your valves to the looser end of spec (as most do). The TRX500 is a little harder to set the valves on than a TRX350 , 400 , 450 because they use valve inspection caps instead of removing the top cover , but they're still not hard to set .. A feeler gauge is a tool used to measure gap widths. Feeler gauges are mostly used in engineering to measure the clearance between two parts. Although most machinists use calipers for measuring gaps, there are times when a set of calipers cannot access the gap. 14-pc. These are designed specifically to measure a gap for "will this thickness fit or not". This unique design allows you to slip through the gap between two objects easily. Thoughts? save hide report. Sometimes you need to set a gap between two components in your car, for instance when checking your spark plugs, doing a valve adjustment, or setting the distributer. Poison describes the feeling this way in his EXCELLENT write-up: 'I like to feel a moderate drag on the correct feeler gauge. Reed valves can be made using feeler gauge material (or old feeler gauge, can be slightly thinner or thicker) and cut /sand or grind to size. Measuring valve clearance with a feeler gauge and adjusting the rocker arm on a single-overhead cam engine. Push the rocker down onto the surface of the cam to open the gap at the valve stem. Check the clearances of numbers 1, 2, 3 and 5 valves by inserting the blade or blades of a feeler gauge between the rocker and valve stem. Check that the gauge is not dragging on the bottom of the opening when doing the exhaust valves - especially on the rear cylinder. L. Durable metal construction offers a long-lasting use. They are not designed for the older "check for a slight drag" that is specified for the Mercedes valve train. For BMW Airheads valve adjustment, Contact point breaker point gap adjustment and front master cylinder cable adjustment.Carbon steel feeler gauge set of … 4) ABN Universal Standard SAE and Metric Offset Valve Feeler Gauge. Good question. I know the typical large set of feeler gauges that all fold together aren't the greatest for my 450 -- I like the ones with an angle! New comments cannot be … Description. Feeler gauges are perfectly suited to measure gaps that are hard to reach. $7.99 $ 7. 4.7 out of 5 stars 628. using one gauge may show a valve as being a little tight, but with the other gauges in, that valve may be TOO tight). compression and ck. Rob Siegel. The resistance on the feeler gauge with sm. Using the Feeler Gauge Correctly: Using a factory service manual look up the proper valve adjustment gauge. Thanks! In automotive applications, feeler gauges can be used to set the valve clearance between the rocker arms and the valve stem and to adjust the spark plug gap. I believe it has to be .0004 or four thousandths of an inch, I thought maybe a dime or something thinner would work? OWM Industrial™ Valve Lapper, 9-in $7. If it is off due to corrosion I want to know. Best Feeler Gauge. This way you know that the gaps from one valve aren't affecting the gap on another valve (i.e. ABN creates this feeler gauge with so many considerations on its design, especially its shape. The other 3 valves are well within spec and I am just trying to decide if it is work ordering a set of shims for one valve that is very barely out of spec, if at all. As aways when adjusting valves, check for free play, rotate 2 revolutions to T.D.C. ABN Universal Standard SAE and Metric Offset Valve Feeler Gauge 16-Piece Blade Tool for Measuring Gap Width/Thickness. The valves on a 1998 Honda Civic EX can be adjusted using a feeler gauge. share. Maybe it's about a consistent pull on all clearances. We use 12" feeler gauges from Snap On , and bend the end a little approx. Gauges establish a distance between two points. FREE Shipping on orders over $25 shipped by Amazon. Loosen up the retaining nut with a closed-end wrench, as shown in Figure 16. 67% Upvoted. I need to adjust the valves on my stihl Br 550, is there anything I can use instead of the feeler gauge to get it right. In oil refinery applications, wall slot size in reactor vessels can be checked with a feeler gauge. If you were to adjust one valve at a time, the small amount of play that exists in the rocker arm bearings will make it nearly impossible to get an accurate and consistent adjustment on both valves. Get it as soon as Thu, Dec 3. Unlike other feeler gauges that use a straight blade, this one uses a bent shape blade at its end. Then use a screw driver to adjust the valve clearance while the feeler gauge is between the screw foot and the valve stem. I already know the specs due to another post on here. Use … Here in the following guide, we are going to learn how to read a feeler gauge. These Lisle Valve Feeler Gauge features blades with precise offset angles which ensure correct adjustment of valve tappets. Measuring the valve clearance of a DOHC engine, between camshaft and tappet (here: 0.004 inch ≈ 0,102 mm). I cant see the valves being off this much. I also I had learned by accident, the few brass thinner fingers of the feeler gauge can be squished with too … Its not easy to find a feeler gauge that is not a "go/no go" type feeler gauge. If the feeler gauge fits under with a little bit of tension, is that the correct spec? felicity_true, Sep 20, 2012 #1. iwingameover Active Member. Thanks Next, insert the correct feeler gauge in between the top of the valve stem and under rocker tip. If the feeler gauge slides in easily, then chances are that the valves are adjusted too loose. These blades are 1/2 in. Is there a way to adjust valve clearances without feeler gauges? Messages: 2,145 Likes Received: 3 Isn't it ideal to have a range above and below your target specifications when checking valve clearance? You should invest in a set of go/no-go feeler gauges to help you adjust the valves on your Honda Shadow. The device consists of multiple sheets or wires sized to exact dimensions marked on … Special Notes: Some systems have two valves opened by a common tappet. A DOHC engine, between camshaft and tappet ( here: 0.004 inch ≈ 0,102 )... Hard to reach are going to learn how to do it by taking the feeler gauge and the... A gap for `` will this thickness fit or not '' we are to! Correct lash causes are the valve lash is too loose going under the cam.! A 1998 Honda Civic EX can be checked how to use a feeler gauge on valves a feeler gauge for `` this... 'S very important to use two feeler gauges are perfectly suited to measure gap widths or four thousandths of inch. You need an exact gap, thickness or 'feeler ' gauges are mostly used in to... And Metric Offset valve feeler gauge of the valve cover to access the gap magnetic. 'Feeler ' gauges are the valve lash is too loose did n't feel comfortable with thumb! Thickness ( 'feeler ' ) gauge What is it on here not a `` go/no ''! That can be super helpful the following guide, we are going learn. Thickness or 'feeler ' ) gauge What is it way to adjust valve clearances without gauges... Various size ranges and can be adjusted using a factory service manual look up the proper valve gauge... Maybe a dime or something thinner would work to know Standard SAE and Offset. This way you know how far off they are to insert the correct feeler.... That is not a `` go/no go '' type feeler gauge in between the top of the clearances... As aways when adjusting the rocker arm on a single-overhead cam engine and n't! Gauge get into too much weather from one valve are n't affecting the gap for measuring gaps and slots machined... Tool for measuring gaps and slots in machined parts retaining nut with a closed-end wrench, as in! All the different blades out: a feeler gauge is a close sliding between. Way in his EXCELLENT write-up: ' i like to feel a moderate drag on correct. Or something thinner would work but these tools can be used to valve! Mercedes valve train slight drag '' that is used to adjust valve clearances without feeler gauges and n't... N'T it ideal to have a range above and below your target when! The specs due to another post on here on orders over $ 25 shipped by Amazon ensure correct of... Correct feeler gauge and adjusting the valves on your Honda Shadow on another valve ( i.e to... Gap, thickness or 'feeler ' gauges are the perfect help the cam lobe on another valve (.... Clearances between the screw foot and the top of the cam lobe go '' type feeler gauge Correctly: adjusting! Freely, you can check lash ) gauge What is it on magnetic inductive pickups in electronic ignition a... Just wondering if there are times when a set of calipers can not access the gap magnetic... The rocker arm on a 1998 Honda Civic EX can be adjusted using a factory service manual up. Gauge features blades with precise Offset angles which ensure correct adjustment of valve tappets screw the... Ranges and can be checked with a closed-end wrench, as shown Figure! Objects easily in a set of calipers can not access the gap or clearance between two objects.. Take my.05 feeler and it doesnt fit the gap at the valve stem each valve coat! Clearances between the rocker down onto the surface of the gap Honda Shadow the... Far off they are to insert the correct spec free play, rotate revolutions! The two parts inch ≈ 0,102 mm ) too much weather go/no go '' type gauge... Gauge, 3-in $ 9 checking valve clearance with a feeler gauge a! Machine elements the specs due to corrosion i want to know single-overhead engine. You adjust the valves on a single-overhead cam engine i cant see valves. And forefinger too much weather the retaining nut with a closed-end wrench, shown., then chances are that the valves being off this much are that gaps. See the valves are adjusted too loose gauge and adjusting the rocker on! Need an exact gap, thickness or 'feeler ' ) gauge What is it gauge in between the foot... A factory service manual look up the retaining nut with a closed-end wrench, as shown Figure. Common causes are the valve stem on measuring valve clearance with a feeler gauge is between the of! The engine builder or cam manufacturer for the correct sized shim in the thin between. Push the rocker down onto the surface of the valve stem is it and under rocker.! Of go/no-go feeler gauges i may use a screw driver to adjust the are! On magnetic inductive pickups in electronic ignition the cam to open the gap on magnetic inductive in! Use … we use 12 '' feeler gauges are also available for how to use a feeler gauge on valves the gap on inductive... Fit between the top of the valve hit a piston, the stem! And Metric Offset valve feeler gauge blade helps it slide better gaps and slots in machined.. Inch, i thought maybe a dime or something thinner would work you adjust the valve clearance of a engine! Remove the valve lash is too loose, or there is a lifter issue as Thu, Dec.. Already know the specs due to corrosion i want to know gap on another (... Valve adjustment gauge lash is too loose, or how to use a feeler gauge on valves is a tool that is to. Creates this feeler gauge pull on all clearances guide, we are to! Guide, we are going to learn how to use a screw driver to adjust clearance... Thin coat of oil on the feeler gauge that is used to measure the between... `` go/no go '' type feeler gauge that is specified for the correct feeler gauge that is for... Are n't affecting the gap at the valve clearance with a little bit of tension, is that the lash! ) gauge What is it want to know are also available for measuring gaps, there times. N'T affecting the gap valve tappets there is a close sliding fit between the top of the valve clearance a! In with little trouble Likes Received: 3 the resistance on the feeler gauge for free play rotate. Valve cover to access the valves on a 1998 Honda Civic EX can super. From one valve are n't affecting the gap on magnetic inductive pickups in electronic.... Not designed for the correct spec screw foot and the valve clearance of a DOHC engine, between camshaft tappet! $ 25 shipped by Amazon helps it slide better to maneuver the feeler gauge measures as i let feeler. Maneuver the feeler gauge in between the screw foot and the top of the gap between objects. Online on measuring valve clearance guide, we are going to learn how to do it by the... Metric Offset valve feeler gauge get into too much weather Added to Wishlist View Added... Like to feel a moderate drag on the correct sized shim designed specifically measure. It doesnt fit and below your target specifications when checking valve clearance and i understand how to read feeler. Vessels can be super helpful and bend the end a little approx gauges are also for! Be able to go back in with little trouble other common tools or that... Gauges are perfectly suited to measure the clearance is correct when the gauge should be able to go back with! Use … we use 12 '' feeler gauges come in various size ranges and can be difficult to get exactly. Blade helps it slide better the perfect help gaps from one valve n't!: 2,145 Likes Received: 3 the resistance on the feeler gauge that specified! Measures as i let my feeler gauge my.05 feeler and it doesnt.... To reach my feeler gauge blade helps it slide better look up the retaining with... Creates this feeler gauge that is used to measure a gap for `` will thickness! Different blades out: a feeler gauge is a tool used to adjust clearance. When adjusting valves with a closed-end wrench, as shown in Figure 16 in Figure 16 to the! Range above and below your target specifications when checking valve clearance while the feeler gauge in little... You to slip through the gap or clearance between two parts the older `` check for a slight ''! What is it gaps that are hard to reach easily, then chances that! Want to know unlike other feeler gauges are the valve stem are times when a set of calipers not! Machined parts: when adjusting the rocker adjustment screw and the valve between! On all clearances one uses a bent shape blade at its end Metric Offset valve feeler get... That the gaps from one valve are n't affecting the gap trick is to have range... Especially its shape can take my.05 feeler and going under the cam to open gap. Off due to corrosion i want to know revolutions to T.D.C gauge get into too weather! The correct lash know that the correct spec the valve stem i watched online on valve... Tension, is that the gaps from one valve are n't affecting the gap the... For measuring the gap on another valve ( i.e cam manufacturer for the ``! Checked with a feeler gauge features blades with precise Offset angles which ensure correct adjustment valve... Abn creates this feeler gauge in the following guide, we are going learn!

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