unseize engine

[flipper]

zakly. never heard of a dr100.

[slugworth1987]

http://www.bikepics.com/suzuki/dr100/

[flipper]

yes but....................that's a kickstart 4 stroke, not a pullstart 2 stroke.

[slugworth1987]

this is true... maybe its a dhastue;oldhv;sdjkbviB DR100 lol korian or chinies

[Guest]

the thing i need o take out with allen keys is the top right item in this pic

http://www.motorcycle-superstore.com/ProductImages/300/2007_Athena_2-Stroke_Big_Bore_Kit_Aluminum.jpg

[rollazuki]

the dr100 is a 4 stroke motorcycle with a camshaft running in the cylinder head, the picture of engine parts is from a 2 stroke engine, very much more simple.

Search the net for a manual for the dr100. Id guess not that dissimilar from a dr125, and follow the dissasembly procedure.

OR, make plenty of notes as you take it apart, so when it goes back together, it stands a chance of running. For example, you need to know how to set the cam timing up, as you have the piston siezed you cant move it to tdc for the strip down, so you really need to find things out like timing marks etc.

[flipper]

the dr100 is a 4 stroke motorcycle with a camshaft running in the cylinder head, the picture of engine parts is from a 2 stroke engine, very much more simple.

Search the net for a manual for the dr100. Id guess not that dissimilar from a dr125, and follow the dissasembly procedure.

OR, make plenty of notes as you take it apart, so when it goes back together, it stands a chance of running. For example, you need to know how to set the cam timing up, as you have the piston siezed you cant move it to tdc for the strip down, so you really need to find things out like timing marks etc.

 

he said it's a 2 stroke

[rollazuki]

Dude, the bike in the picture is a 4 stroke.........

Hang on, Ill google its ass......

Yup

http://www.bikez.com/motorcycles/suzuki_dr_100_1987.php

If that is the bike it has 4 strokes(count em)

Its way more complicated than a 2 stroke, and prone to making expensive noises if the cam timing aint correct.

Lets face it so far tho.......at present its a non stroke.......

[Guest]

it is a 2 stroke pull and electric start this isnt the bike

it is a dr100 not that 1 tho ill try find it on google

[Bill_on_a_bike]

How many DR100s can there be.

[Guest]

ive found one on gumtree exactly same but it says its a 49cc

mine has 100cc stamped on side of box on bike but looks same:S

http://

http://lancs.gumtree.com/lancs/06/27511506.html

[Guest]

also found on google dr 49cc this

http://manchester.gumtree.com/posting_images/63/24875163__1213098099__1__1-736f6d099f3180c80adcaff674efd078.__big__.jpg

could it be 49cc even tho it says 100cc on gear box i think its called a gearbox

[rollazuki]

looks like a strimmer or weedeater motor.

ickleaircooled thingumy(that would be a 2 stroke)

[Guest]

well thats look exactly same

details same pull and electric start

so will it be any eisier or do i need to do anything differnrt

[rosszx9r]

i really admire the patience of all you guys trying to help....

wardy, if you don't know how to get the plug out after all that has been said then give it as a bad job.

sorry mate, but if you're trying to fix a siezed engine, you've got to be able to get that yourself

if you're really stuborn and determined to get it fixed, try and get a manual for it or take it down to a local bike shop and get them to look at at. a proper once over may cost you £50.

[Guest]

i have got plug off i just needed right tools and i am going to take out piston aswell

is there anything i should do differnt now as i think it may be a 49-50cc not 100cc

thanks for everyones help

[Guest]

i cant get pistons case off i took out screw from were spark plug goes and it comes up a bit but piston is init ithink how do i yake it off

[Bill_on_a_bike]

you need to take the cylinder head and barrel off, which usually requires removing the head bolts, which run right from the top of the cylinder head down in to the engine casing. Have you got these out?

[Guest]

no cant fin them will have a look if not will take pics

[Guest]

cant find heres 2 pics one is from top and one is side of how far up it comes

[Bill_on_a_bike]

Yeah looks like you've got the head bolts out already, there shouldn't be anything solid holding the cylinder head on. Check for any more bolts through the top that might be holding it down.

[Guest]

cant see nothing when i pull it up the flywheel turns round a bit and when i push it back down it spins back so far but the when head gets to bottom flywheel wont move no ferther

[Bill_on_a_bike]

cant see nothing when i pull it up the flywheel turns round a bit and when i push it back down it spins back so far but the when head gets to bottom flywheel wont move no ferther

 

I don't know why that would be, other than maybe the pressure inside the cylinder with the head down is enough to stop the crank.

[rollazuki]

ok, what we know so far, the motor is a 2 stroke strimmer motor, its got a(im guessing) 1 piece head/barrel assembly.

The piston is definitely siezed into the bore, so as you pull the barrel up, it takes the piston with it.

The only way to unsieze it, is either to pour some hot oil into to spark plug hole, or gently heat up the whole barrel assembly with a hot air gun/blowlamp/hairdryer.

You need to expand the barrel enough to free off the siezed piston. Id guess that when(if) you get the barrel and piston to come apart, you will find they are both very knackered.

Id guess as you dont know the exact origin of it, you will have a fair amount of trouble getting spares. You may find a piston/reboring specialist can source a new piston and possible re-bore or re-plate the barrel to suit. My guess is tho that for the money, you could probably source a working pit bike like yours. Id be surprised if you get it running again economically.

Good luck, Rolla

ps, ensure no petrol is around BEFORE taking a heat source to the barrel.........

[Guest]

ok cheers mate will try tommorow just put away as it now dark