2001 yz 125 compression test|02 YZ 125 Compression Question : chain store My stock 2005 yz125 after breaking read 165-166psi. I don't think it matters much but I don't think you need to disconect the carb. Just hold the throttle open and the kill button . weboii,Moranguinhos,para quem não sabe meu canal é inspirando Em Games Principalmente focado Em PKXD.Bom estou aqui para fazer muitos Moranguinhos no YouTube,Es.
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My first question would be, did you hold the throttle WOT while doing the test? This has a huge effect on cylinder fill and compression number. Just went thru this last week with .You can buy a good quality compression tester from your local hardware store .
My stock 2005 yz125 after breaking read 165-166psi. I don't think it matters much but I don't think you need to disconect the carb. Just hold the throttle open and the kill button . I am thinking that it is a result of the wrong piston, improperly seated rings, and bad gaskets. One other thing that I just remembered is when I took my plug out to do the . Just to let you know, my 2001 YZ125 has almost always had approximately 180 psi, so I think you are right in the ballpark. I have tested it with two compression guages and . I have had a lot of people ask me how to do a compression test so I decided to make you a video explaining step by step.
yz125 compression
How to do a compression test on a YZ125. This procedure will also work on other carbureted 2 stroke dirt bikes, but check your service manual for correct co. Wet compression test is putting a small amount ( 1/2 teaspoon) of oil into the cylinder and the do the compression test. You reading should be higher than the dry test. . Did a compression test on my 2002 yz125 first compression test cold (6 degrees outside. in that weird temperature you southerners use it's 43) and got.
You can buy a good quality compression tester from your local hardware store and probably even walmart for 20-30 bucks. All you do is twist it into your spark plug hole and . I have a 2000 YZ125 and my compression tested at about 150. My bike runs great. Does anyone know what the service manual recommends that it should be at? well its been a long time since ive been on a dirt bike, and i picked up a 1999 YZ125 and putting some TLC and some maintenance into it. i did a compression test today. engine fully warmed up. carb drained and line disconnected. while holding the throttle wide open. after 9 kicks, i have a top reading of 130psi. is this normal? Part 14: Leak Down Test; Part 15: Engine Break In; Bottom End. Bonus: Tools & Prep; Part 1: Removal & Disassembly; Part 2: Transmission Service; . General Specifications For Your 1997-2001 Yamaha YZ125. If you .
For hardcore racing, we ran this setup on the 2022 Yamaha YZ125 (stock clickers are in parentheses): Spring rate: 48 N/mm Race sag: 100mm Hi-compression: 1-1/2 turns out Lo-compression: 12 clicks . 2001 Yamaha YZ125 review, photos, features, price and specifications at Total Motorcycle. . faster and more improved for 2001! AMA 125 Supercross title winner for the fifth year in a row. . Compression Ratio 8.7; 10.84:1 Carburetion 36mm Mikuni TMX . Compression PSI on 2001 yz125. Thread starter yz250flash; Start date Aug 13, 2003 . the bike is a 2001 yz125, v-force reed valve and Pro-Circuit pipe. P.S. This is my first post although I have been reading for a while. This site has .
I'm at about 4700' in altitude and tried a test once and came up with 165 psi with 2 hrs. on the motor. Any help is appreciated. Post Reply. S. Studboy Thinks he can ride. Dec 2, 2001 1,818 0. Mar 15, 2005 #2 JP, I get 235 PSI with a fresh topend stock compression on my 02 YZ250 (basically the same motor), and I'm at 4200 feet. Are you holding . Want to make your YZ125 faster? Whether you’re looking to build the fastest 125 2 stroke or just want a powerful and light trail bike, this guide will cover the top 7 YZ125 mods you can do that will actually make a difference.. I’ve owned several YZ125’s over the years, and there’s a lot of upgrades available for this motocross bike, but they don’t all have the same .
1974: This was the first real year of the Yamaha YZ125, which was brought out as a companion to the much more exotic YZ250 and YZ360. The 125 still wasn’t on the same level as the bigger bikes and didn’t have nearly as many exotic parts. It was, in fact, very similar to the MX125 and MX100, which Yamaha offered concurrently.
Wet compression test is putting a small amount ( 1/2 teaspoon) of oil into the cylinder and the do the compression test. You reading should be higher than the dry test. You do need to have the cylinder measured. For hardcore racing we recommend this set-up: Spring rate: 0.43 kg/mm Oil height: 61mm Compression: 6 clicks out (stock 9 out) Rebound: 11 clicks out (stock 9 out) Fork leg height: Flush with top . 2005 was the first year Yamaha went to an aluminum frame on their YZ125. It hasn’t changed since. The year was 1996 and Yamaha had unleashed a monster of a 125 after years of tiddler mediocrity.
For hardcore racing we recommend this set-up: Spring rate: 0.43 kg/mm Oil height: 61mm Compression: 6 clicks out (stock 9 out) Rebound: 11 clicks out (stock 9 out) Fork leg height: Flush with top . Does any one know how many PSI the compression is supposed to be at on an 06 yz 125? I have a compression tester and need to know. Jump to content. Yamaha 2 Stroke; Activity. All Activity; TT Picks; Podium; Search; . Cracks in a piston will not show up on a compression test. I suggest replacing the piston and rings every 50 or so hours. Link . Don’t get us wrong; the 2001 KX125 is Kawasaki’s best 125 in the past three years. It is closer to its competitors powerwise than ever, it just lacks the breadth, usability and versatility . 2001 YZ80 Compression Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; 2001 YZ80 Compression. . but it was not very tough to go right through that and keep rotating. I have not done a compression test on it yet, as I don't have the stuff to do so. . Best I could find is I should be in the 125 psi range, which I would think .
Front Suspension And Steering Specifications For Your 1997-2001 Yamaha YZ125 - Steering And Front Suspension Specifications, Torque Specifications. Sign in. Welcome! Log into your account . Leak Down Test; Part 15: Engine Break In; Bottom End. Bonus: Tools & Prep; . Compression Damping Adjustment – 1994 – 1995: 20: 10 Clicks Out . Bike: 2001 YZ-250. Engine Work: Cylinder Re-Plated in March 2010, new Wiseco (forged) piston installed. Bore sized to piston by Millenium Technologies. . Compression Test: 210 psi and still rising after ~10 kicks, engine warmed to operating temp and throttle held wide open. Quit kicking at this point.2001 YAMAHA YZ125 Still a big contender for pros in the 125 class, the 2001 YZ took a slight step backward in effectiveness for novices. The switch to a 38mm carb made it faster, but harder to ride. It finished second in our 2001 125 shootout. TEST BIKE WEIGHT: 209 lb. PEAK HORSEPOWER: 32.3 hp @ 10,600 rpm. 2001 YAMAHA YZ250 2022 YZ 125 Introduction. By Matt Mattoon and Jimmy Lewis. . The combustion chamber shape results in a 2.1% volume increase that leads to a decrease in the compression ratio which will help with todays inconsistent gas from the pump. These changes were made with hopes of giving the YZ125 more power in the mid to high range of its powerband .
I bought a 99 yz250 about two months ago for 0. I have been riding it and going through it since I got it. Slowly fixing small things. Well I finally got my hands on a compression tester and did a test today. It only has 145 on the tester. Im sure this is probably low but this thing still pulls amazingly.The old YZ wasn’t fast enough to hang with European 125 two-strokes, and it definitely wasn’t fast enough to keep up with 250cc four-strokes. Now, we have the first substantial update in years. It isn’t the top-to-bottom rebuild that the faithful might have hoped for, but it’s far more extensive than anything since 2005.
Yamaha YZ125 (steel frame, telescopic fork) (Europe, North America) 1988 Yamaha YZ125 . 2001 All markets Name: Yamaha YZ125 Code: YZ125N, 5MV1, 5MV2, 5MV3, 5MV4 2002 All markets . Compression ratio 8.6~10.7:1 8.2~10.1:1 - . KAYABA SSS SHOCK SETTINGS For hardcore racing, we ran this setup on the 2019 Yamaha YZ125 (stock clickers are in parentheses): Spring rate: 4.7 kg/mm Race sag: 100mm (105mm) Hi-compression: 1-1/2 .
Yamaha YZ125 Compression Test
Yamaha YZ 125 - Test Ride & Review - Dirt Rider. By editorial staff. April 9, 2009. More Tests. . 2025 Dirt Rider 450 Motocross Bike Comparison Test. Tests. Best Motocross Bike Winner—2025 . I've ridden a '23 125X for the past year. Great 125 woods bike when you get the jetting dialed, but this can be tricky. I've ridden the regular '23 YZ and there is a difference, maybe not incredibly noticeable, but there is a difference. The regular YZ comes on the pipe a little sooner / easier but has a little less low end.
2004 Yamaha YZ125 - First Test & Review - Dirt Rider. By editorial staff. February 24, 2009. . The new YZ motor has more midrange than any other 125 I have ridden. It revs out like last year's .
However, many people didn’t approve because it switched to a 5-speed transmission. 125’s have a narrow power-band as it is, and some riders just like having that extra gear. YAMAHA YZ 125 2001 .
YZ125 compression testing.
YZ125 Low Compression
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2001 yz 125 compression test|02 YZ 125 Compression Question