Question about 2004 Yamaha YZ 250 F

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Is the power of 58 bhp at engine sprocket or wheels...cos it really doesnt seem that much to me...

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Its measured at the flywheel, but then you get losses through transmission, chain wheels etc

Posted on Feb 18, 2009

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Posted on Jan 02, 2017

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What is the maximum speed of renault 9 1987


The Renault 9 GTL is a 4 door hatchback style motor vehicle with a front mounted engine driving through the front wheels.
Powering the Renault 9 GTL is an overhead valve, 1.4 litre naturally aspirated 4 cylinder motor, with 2 valves per cylinder that provides power and torque figures of 60 bhp (61 PS/45 kW) at 5250 rpm and 100 N·m (74 lb·ft/10.2 kgm) at 3000 rpm respectively.
The engine supplies its power through to the wheels via a 4 speed manual transmission.
Quoted weight at the kerb is 855 kg.
Its maximum speed claimed is 153 km/h, which is 95 mph.

Sep 07, 2016 | 1987 Renault 9

1 Answer

Engine runs but wheels do not move


This could be a few things:
1) Your clutch plates may have worn out so that even when the bike is in gear, it will just rev, but no power will be transmitted to the drive shaft (smaller front chain sprocket is the driving gear, larger rear sprocket on the back wheel is the driven gear)
2) The front chain drive sprocket has come off under the cover on the motor - if the chain is really slack, have a look.
3) The front chain drive sprocket SHAFT has sheared. (basically, meaning that the shaft has broken into two parts as it couldn't handle the drive power (torque) being delivered through it to the chain drive) With the motor on, listen for grinding noises internally
when you rev, from the vicinity of the front chain drive cover. If its rough and grindy, the shaft may be sheared. Then with the motor off, take the cover off and leverage the small chain drive sprocket away from the motor with a screwdriver, and see if the shaft can just be pulled out of its sealed opening. Unfortunately with these bikes, the metals used in drive shafts and motors are not always heat-treated or hardened to the standard they should be, so shearing and premature failure can happen.
4) The gearbox or something in it has blown, unfortunately for the same reason above, quality related.
Its fair to say that these great little bikes are here for a good time, but not for a long time.

Apr 11, 2014 | Razor MX350 DIRT ROCKET - BLUE

1 Answer

Timing procedure for 2005 suzuki forenza


what engine, most cars have many choices new.. what is yours.
"Displacement or VIN"
cam
or
spark?
btw its really a Daewoo Lacetti from S.Korea makers.
by a real FSM.
or got to alldata.com and read

here is the list of engines
1.4 L 93 bhp (69 kW) Petrol I4
1.6 L 109 bhp (81 kW) Petrol I4
1.8 L 120 bhp (89 kW) Petrol I4
2.0 L 132 bhp (98 kW) Petrol I4
2.0 L 121 bhp (90 kW) Petrol I4
2.0 L 121 bhp (90 kW) Diesel I4

before working on any car, engines. in the USA (where you?)
open hood, look up see that vacuum and smog tag there
and it tells you what engine you have,
than ask questions based on that.

the USA forenza uses the
The US model line features the 2.0 L 4-cylinder E-TEC II made by General Motors, developing a maximum power of 132 horsepower at 5600 rpm.

this is a DOHC engine, 2 cams
and a belt (rubber band engine)
cam timng, im not repeating the 38 steps in the manual or torques/
but the crank cog mark is down aligned with the bottom pan mark
the cams are both at 12pm, aligned with markes on back top pan.

install (cut and past just first 8 steps) 2.0L E-tec II only)
  1. align the timing mark on the crankshaft gear with the notch on the bottom of the rear timing belt cover.
  2. Align the timing marks on the camshaft gears, using the intake gear mark for the intake gear and the exhaust gear mark for the exhaust gear.
  3. Install the timing belt.
  4. Turn the hex-key tab in a clockwise direction to tension the belt. Turn until the pointer aligns with the notch.
  5. Install the automatic tensioner bolt and tighten to 18 ft. lbs. (25 Nm).
  6. Rotate the crankshaft two full turns clockwise using the crankshaft pulley bolt.
  7. Recheck the automatic tensioner pointer.
  8. Install the front timing belt cover.




Nov 27, 2013 | 2005 Suzuki Forenza

1 Answer

Coil wires firing order


you pulled them all at once.?
its really a Daewoo Lacetti
and all these engines.
pick an engine
1.4 L 93 bhp (69 kW) Petrol I4
1.6 L 109 bhp (81 kW) Petrol I4
1.8 L 120 bhp (89 kW) Petrol I4
2.0 L 132 bhp (98 kW) Petrol I4
2.0 L 121 bhp (90 kW) Petrol I4
2.0 L 121 bhp (90 kW) Diesel I4

Nov 06, 2013 | 2004 Suzuki Forenza

1 Answer

How to inprove engine power by modification of exhaust system in motorcycle


Hi,
Modifying one part of your bike will some effect from another.
If you modify the exhaust system it won't guarantee a bigger additional power, it only just help the exhaust from the engine to go out faster. Become noisy too!
You must modify the piston, carburetor, crankshaft drive gear, and rear wheel gear to have the optimum power advantage you desire for real power from your bikes engine.
May I suggest, instead of the exhaust modification, you should start in the gearing system( crank gear sprocket, rear wheel sprocket, and chain )
Hope that helps you.
Thanks for using FixYa!

Jul 12, 2011 | Suzuki Boulevard C50 Motorcycles

1 Answer

I have a 3 cyllinder engine havin 34 bhp wan to increse15bhp more


The only thing that would give you more power without hurting fuel mileage would be a turbo charger. Any other method would decreas mileage.

Feb 28, 2010 | 2000 Suzuki Aerio

1 Answer

Sir, I own a Passion plus Bike 1996 make. 1.What would be the reason If I experience chain sounds-Usually while changing gears? 2.some sort of Shaking Rings noise from Engine , was it really mean that the...


The transmission consists chain sprocket assembly, with the smaller sprocket on the engine & a larger one at the rear wheel. The chain stretches and the sprocket teeh keeps getting worn whenever you accellerate or use the engine as a brake to slow down. This play can increase up to 2 inch,. thus on lower gear, higher mechanical advantage, looses since the sprocket of the engine transfers power after that play/gap/time required to tranfer the same power to the rear sprocket result of metal on metal hammer.
Tighten chain at regular intervals and change the chain sprocket if its still the original one. If the bike runs 50+ km in a day and/or at high speed, change the engine oil every 500 to 750 km running i.e. once a month. Whichever comes first. The oil becomes darker & looses it's viscocity(thin). Also after covering so many kms, if the engine oil had been low for that period & running at a good speed you might require a change of piston rings( 1 oversize) and then filed to fit without jamming the piston.........sodeep

Oct 27, 2009 | 2006 Hero Honda Passion Plus

1 Answer

Stiff / Locking rear break on YBR 125 58


Take the wheel off and remove the brake hub. Now clean out all the dirt and mud from riding in the creek and through mud puddles. The brake shaft has dried mud on it and can not rotate freely in the hub. You will probably need a plastic hammer to punch it out of the casing. clean the shaft and the casing hole the shaft goes through. Grease the shaft with waterproof grease.

Please rate this solution. Thanks!

Mar 29, 2009 | Yamaha Ybr 125 Motorcycles

1 Answer

Sears 18" chainsaw i just finished cutting some wood and went back to cut some more the chain does not move I took the cover off and tried turning the sprocket thing it doesnt move this saw is only a few...


Assuming you can pull the starter cord and the engine turns freely (e.g. engine not frozen due to improper fuel mixture), check for debris near the clutch wheel.  Also, loosen the bar tension screw to see if the chain and clutch can move.
If you pull the starter cord and the chain moves, your clutch may either be jammed in the engaged position or may have gone out.
Make sure that you don't have the chain tension too tight and that you always have plenty of bar oil.

Jan 24, 2009 | Garden

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