yamaha yz125 compression test|2002 yz125 compression : discounter I'm using a compression gauge that has a ten inch flex hose, so it could increase . webAll of Benfica's matches, anywhere, anytime. Subscribe. Start watching
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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 in and kick until you get the highest reading. Hope this helps.I'm using a compression gauge that has a ten inch flex hose, so it could increase .
The best way to know for sure is to do a comp. test on a fresh, broken in top end. . 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. I'm using a compression gauge that has a ten inch flex hose, so it could increase the total volume of the combustion chamber and lower the reading. However, it has a valve in . 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.
The best way to know for sure is to do a comp. test on a fresh, broken in top end. Then you can tell when it starts to fall off. Always do the test when the engine is warm, clean . I'm looking for the "safe psi range" for both the 2012 YZ125 and 2012 YZ250 compression. I'd like to base my rebuilds on how the compression reads if that's a smart .
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. . 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 checked my compression on my YZ 125, 145 PSI. I just bought the bike, and me and my father are going over the whole bike. My repair book said that the compression should . Normally for a compression tool to be effective you should have a fresh top end, then record your reading and check every so often. When you see a drop, then you know its .
OK, i have had my 02 Yz 125 for about 3-4 months now (moved up from honda 230) and i just got back from a trip to WV and im doing some basic maint. on the bike (dump gear oil, clean air filter, new rear tube and tire, brake fluid) and last night while i had the bike apart i decided to do a compression test, and i tested it 3 times and always got a reading of 105-110 . I'm looking for the "safe psi range" for both the 2012 YZ125 and 2012 YZ250 compression. I'd like to base my rebuilds on how the compression reads if that's a smart thing to do. Any info/insight is greatly appreciated. Thanks!
YZ125 Compression test. Thread starter PK; Start date Sep 25, 2001 . P. PK. Member. Feb 27, 2000 . Same thing happend to my 98 YZ 125 right before Dirt Week. The ring actually had a piece missing and lost all compression. New top end kit solved all the problems. Post Reply. D. DK00_yz125. (1) Cylinder head. The compression has been reduced to 8.8:1 compared to 10.7:1 on the YZ125 motocross head. Yamaha achieved this in a novel way, raising the spark plug 3mm in the head, using the . 2015: The YZ125 was upgraded to the “arrow” design plastic of the Yamaha four-strokes (and that included a new airbox). 2016: A gold chain, black rims and BNG were added in 2016. 2017: The .
The best way to know for sure is to do a comp. test on a fresh, broken in top end. Then you can tell when it starts to fall off. Always do the test when the engine is warm, clean air filter, throttle wide open.
I will also make my usual suggestion if money is an issue: a used stock late model regular YZ 125 with a tusk 18" rim/spoke kit and some basic trail protection (hand guards, skid plate, etc.) is all you need to make a killer woods weapon (big tank also needed for woods racing). I've been doing extremely well in vet class hare scrambles on mine. 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. So if the bike .The combustion chamber has a 7% increase in volume and the compression ratio is different. It’s 10.21:1 when the reshaped power valve is closed, which is a 5% reduction. With the power valve open, it’s 7.81:1, which is a 1% increase. . We will have a full test of the 2023 Yamaha YZ125X in the August, 2024 print edition of Dirt Bike.
KAYABA SSS SHOCK SETTINGS For hardcore racing, we ran this setup on the 2018 Yamaha YZ125 (stock clickers are in parentheses): Spring rate: 4.7 kg/mm Race sag: 100mm (105mm) Hi-compression: 1-1/2 . YZ 125 Compression test. YZ 125 Compression test; By Bill_B, March 2, 2018 in Yamaha 2 Stroke. Share More sharing options. Followers 0. Recommended Posts. Bill_B. Posted March 2, 2018. Bill_B. Members; 1.9k Location: California; Share; Posted March 2, 2018. All the changes add three pounds to the wet weight of the 2023 Yamaha YZ125. It tips the scales at 212 pounds with the tank topped off with premix. The GNCC-aimed 2023 Yamaha YZ125X gets a 0 .
But i came across a compression tester on ebay for like 20 dollars, and after opening the box i imediatly regretted the purchase. So i thought i would go give it a test, and i knew that a 250 should have around 240 psi compression, this stupid thing only reads 125 psi. Is it even possible to have compression that low and have the bike still run? For hardcore racing, we recommend this shock setup for the 2020 Yamaha YZ250X (stock specs are in parentheses): Spring rate: 48 N/mm Race sag: 105mm Hi-compression: 1-3/4 turns (1-1/2 turns out .
how is the 2023 yamaha yz125 engine? The Yamaha YZ125 engine is really fun to ride and great for learning how to feather the clutch and carry momentum in the turns, but it’s not great for .2025 KAWASAKI KX250 TEST VIDEO WITH CARSON BROWN 2025 KAWASAKI KX250 : WHAT’S NEW AND IMPORTANT . The Yamaha YZ125 two-stroke might be the number one motocross bike in the world. . kit, which .Compression Ratio: 8.2~10.1:1 Fuel Delivery: Hitachi Astemo® Keihin PWK38S carburetor Transmission: Constant-mesh 6-speed; multiplate wet clutch Final Drive: Chain Fuel Capacity: 1.8 gal CHASSIS. Suspension/Front: KYB® Speed-Sensitive System inverted fork; . The 2022 Yamaha YZ250 got a much-needed facelift, but the lack of engine upgrades or weight savings means that the new YZ250 didn’t close the power gap on the 2022 KTM 250SX
KAYABA SSS SHOCK SETTINGS For hardcore racing, we ran this setup on the 2017 Yamaha YZ125 (stock clickers are in parentheses): Spring rate: 4.7 kg/mm Race sag: 100mm (105mm) Hi-compression: 1-1/2 . 2004 Yamaha YZ125 - First Test & Review - Dirt Rider. By editorial staff. February 24, 2009. . and most of our test riders made very few changes to the clickers from the stock settings. The sag .
No, compression will be higher with the throttle open. Link to comment Share on other sites. More sharing options. NitrousR1. Posted February 24, 2014. NitrousR1. Members; 921 Location: California; Share; Posted February 24, 2014. At 145 psi you are ok for a yz85. They usually run 160 on a fresh cylinder and piston. Just rebuilt my top end on my 06 yz 125. Still no improvement on compression feel through the kicker. Should I have honed it? Rings not seat nicely? Im thinking of ripping it down and getting it honed. The top end only has like 5 hours on it.
The Yamaha YZ125 two-stroke is one of the most popular bikes on the market and it’s resale price continues to hold its value. Yamaha is the only major Japanese manufacturer still producing two .
Compression Test Results (Stock 08 YZ 125) Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; Compression Test Results (Stock 08 YZ 125) By JRod4928, March 20, 2013 in Yamaha 2 Stroke. Share More sharing options. Followers 0. Recommended Posts. JRod4928. Posted March 20, 2013. JRod4928. Members;2018 Yamaha YZ125 Long Term Update. March 9, 2018. . Running 105mm of sag, we have sped up the rebound 1 click and stiffened up the compression two clicks in the fork to get rid of the initial harshness but still maintain bottoming resistance. Additionally, we slowed down the rebound 2 clicks and stiffened up the low-speed compression two . Cycle News off-road editor Ryan Nitzen rides the newly updated 2024 YZ125X, Yamaha's off-road option for the 125 class. KAYABA SSS SHOCK SETTINGS For hardcore racing, we ran this setup on the 2020 Yamaha YZ125 (stock clickers are in parentheses): Spring rate: 4.7 kg/mm Race sag: 100mm (105mm) Hi-compression: 1-1/2 .
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yamaha yz125 compression test|2002 yz125 compression