raptor 660 compression test|compression test : exporter I am attempting to test the compression on my 660. I was curious if the compression test could be done without the carbs on the bike? I would think so because I'm .
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I have problems with a 660 raptor. I did a compression test and only got 80psi. I thought about it later. ( after I had pulled it apart) How can I get an accurate compression test .Set the crank on TDC, place the cam in the motor with the lobes up and out as they .I am attempting to test the compression on my 660. I was curious if the .
Did a compression test reads around 110-115psi. I would think with it that low on . Set the crank on TDC, place the cam in the motor with the lobes up and out as they would be on a compression stroke and bolt up the gear while lining up the compression . I am attempting to test the compression on my 660. I was curious if the compression test could be done without the carbs on the bike? I would think so because I'm . I did the compression test on my raptor. Granted, my raptor is over 1 year old and the starter is showing its age, the first 5 times I peformed the test all I could get was about .
Just traded my 85 sang for a 03 660 stock. The bike runs good but feels a little under powered. I took out plug did compression test. Wide open throttle turning over fast and . Perform test with a "warmed up" engine; ensure battery has a full charge. Remove spark plug and install compression tester. Make certain the spark plug wire connector's end . Did a compression test on my 2004 660 and i got about 90 psi...put oil in the cylinder and it went up to 120. The manual says that i have damaged or wore piston.since it . AAHHH the 660 raptor blues. I have owned three of them and still am building my last 686. OK first off pull the head cover off and make sure your timing is dead on, then check .
Did a compression test reads around 110-115psi. I would think with it that low on compression from the spec of 180psi the motor would leak down more than 8%. Anyone done . You'll get low compression if your valves are sticking open (no clearance) or your timing is off, or a blown head gasket also besides rings.
Ran a compression test and it's right at 80psi. I was getting 70 psi before setting the tight intake valves. Adding a little oil made no difference. So I'll have the cylinder bored and order a new piston. . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 carbon build up is unlikely, the decompression is just weights on the cam sprocket and a shaft that goes into the cam with a pin that bumps one of the rocker arms and holds a valve open. when the motor fires the weight move . 660 with very low compression. . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N . I'm guessing the valve adjustment remedied your problem so all that's left now is the butt dyno test. 2004 660/700 Hybrid Knobbie Class Drags 2007 YFZ Woods Bike, Trail Class Drags and ATV Rodeo .
I only got 80psi on my comp test and 130psi with a cap full of oil in the cylinder. . '03 Raptor 660 - Runs like a raped ape. GYT-R Jet Kit FMF Exhaust System (Power Bomb + Power Core 4) . what compression ratio piston did . Ok so I have an 01' Raptor 660 that I have had since new. I was getting a bit tired of getting beat in the sand drags and decided to freshen it up. . I have a 686 with high compression and a stage 3 cam which will bleed off a bit of compression compared to your stage 2. When my valves are out of adjustment (tight), it turns over fine and . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 '16 Polaris RZR XP4 1000 Turbo, '14 Polaris RZR XP 1000. Save Share . To test for this failure, unplug the rectifier/regulator and try again. Unplugging the rec/reg frees this common short that is pulling HV down and it now .
Yamaha Raptor 660. 660 Specific "How-to" Unfollow Forum Follow Forum Create thread Filters . compression test. createroflife; Apr 7, 2013; 4 3K Sep 30, 2013. by sto'stimemachine. R. 660 stem bearing holder removal, severe rust, tried everything! .
You can't unless you run a compression test. Why don't you tell us your symptoms, instead of a possible incorrect assumption of the cause? . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 '16 Polaris RZR XP4 1000 Turbo, '14 Polaris RZR XP 1000. Save Share I had my local shop to a compression test on mine awhile back and they said it was at 115 pounds, a little low, they said it should be around 120 to 130. . Raptor 700 Modifications Raptor 700 Discussion General 660 Discussion Raptor 660 Modifications Raptor 660 Maintenance. Top Contributors this Month View All. Raptorvirgin23 13 Replies. A .
You can squirt some thick engine oil down in the plug hole and do a compression test. If you get better results then you probably need a new piston and rings, because the engine oil helped seal it up. If it says the same then the problem is probably in the cylinder head. . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe .
Ok so I have an 01' Raptor 660 that I have had since new. I was getting a bit tired of getting beat in the sand drags and decided to freshen it up. trinity 686 kit. stage 2 cam. 12 to 1 compressioin JE piston. Titanium valve springs. port and polish on the head. full Curtis Sparks exhaust. pro flo filter . Maybe a few more I have forgotten .This Yamaha raptor 660 lost compression, took the head apart and saw that the piston was trashed. Cylinder wall needs a new rehone. And all because the drain. 660 compression. Jump to Latest . Did a compression test on my 2004 660 and i got about 90 psi...put oil in the cylinder and it went up to 120. The manual says that i have damaged or wore piston.since it did not get up to 160 with the oil should i also assume i have a valve problem or timing.
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Looks like upgrading to a higher compression piston is the way to go. But before doing so I want to make sure I'm doing the right choice, so I have a couple of questions regarding 11:1 pistons. . 01 Raptor 660: YFZ shocks, RS-3 full system, K&N no lid, DynoJet Stage 2.94 CR 250: Pro-Circuit pipe+Muffler, Boyense Reeds. Powering the Raptor is the largest engine available in a sport ATV. It measures in at a massive 660 ccs and sports a 9.2:1 compression ratio. Some of the notable features of this SOHC four-stroke . Run a compression test. Run the engine with the radiator cap off and look for bubbles coming up out of coolant. '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400
Compression Test. Jump to Latest . Raptor 700 Modifications Raptor 700 Discussion General 660 Discussion Raptor 660 Modifications Raptor 660 Maintenance. Top Contributors this Month View All. Trev 8 Replies. D. daprotege5 7 Replies. S. svpremeap10 7 Replies. Recommended Communities. AVS Forum Once everything was assembled, I did a compression test. While doing the compression test, the battery went dead. I hooked jumper cables up to my TRX450S and retried compression test. . '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 '16 Polaris RZR XP4 1000 Turbo, '14 . While doing the compression test, the battery went dead. I hooked jumper cables up to my TRX450S and retried compression test. . Yamaha Raptor 700, Raptor 660, Raptor 350, Raptor 250 as well as the smaller Raptor 50, 80 and 90. Show Less . Full Forum Listing. Explore Our Forums. Raptor 700 Mods Raptor 700 General Raptor 660 Mods. Top . 04' raptor 660-Hot rods crank, .5mm overbore, 11:1 wiseco piston, Stage 1 hotcam, Yoshimura slip-on exhaust, K&N filter with outerwears, open lid airbox, Dynojet stage 2 jet kit . set the valves, put fresh gaz, test compression and its at 65. I tried to start it rolling and it made an high pitch sound for couple try she barely popped and .
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 . compression test got about 115psi, rings arent seated yet, its getting fuel no problem, can see the mist come out of spark plug hole, strong smell of petrol, (before i turned the fuel off) i havent messed with carbs since . With the new 1/4 x 20 threads cut into the decompression pin bore and the 1/4 x 1/2" (shortened .050") set screw you are now ready to insert the Decompression lever into the end of the cam with the lever in the Flat (decompression off) position. '01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, K&N '01 Polaris Scrambler 400, '04 Suzuki LTZ400 '16 Polaris RZR XP4 1000 Turbo, '14 Polaris RZR XP 1000. Save Share . time for a compression test '05 660 SE_g-force extended axle (4 inch)_pro taper bars 7/8"_ K&N_ swiss cheese'd airbox_primary drive sprocket and chain 44 .
Raptor 660 Categories. General 660 Discussion I stand corrected the 660 standard is 188.31 psi, minimum is 163.57 psi and maximum is 210.5 psi. on a 700 it`s minimum 55.8 psi,standard is 64 psi and maximum is 71.7 psi I got this info from the Yamaha Service manuals. I thought the 660 specs were a typo but I have 2 different manuals and both state the same thing. Raptor 660 Categories. Raptor 660 Modifications Piston brand differences? Jump to Latest . (Do a leakdown compression test) in order to evaluate the engines current state. This will tell you about your rings, valves,and seals. Make sure you set up your new valves correctly. If they are not seated correctly, you will lose some compresion. .
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compression test
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raptor 660 compression test|compression test