Engine rebuild thread - for fun only

Big lumps of metals and spanners. Including servicing and fluids.

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937carrera
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Engine rebuild thread - for fun only

Post by 937carrera »

This is just for a bit of fun

What do you think this is out of and what has gone wrong (why is it in bits)

Image
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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itchyfeet
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Re: Engine rebuild thread - for fun only

Post by itchyfeet »

Lawnmower
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
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937carrera
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Re: Engine rebuild thread - for fun only

Post by 937carrera »

Close, but not close enough yet - and diagnosis ?
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

harris121163
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Re: Engine rebuild thread - for fun only

Post by harris121163 »

model petrol car and stuck piston ring :D

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937carrera
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Re: Engine rebuild thread - for fun only

Post by 937carrera »

nearly half right :)
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

JeffRoo
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Re: Engine rebuild thread - for fun only

Post by JeffRoo »

Model aircraft and it crashed
84 Caravelle 1.9DG

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937carrera
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Re: Engine rebuild thread - for fun only

Post by 937carrera »

Getting colder, in fact downright chilly
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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Aidan
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Re: Engine rebuild thread - for fun only

Post by Aidan »

chainsaw
lack of lube

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Titus A Duxass
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Re: Engine rebuild thread - for fun only

Post by Titus A Duxass »

Strimmer - it's Donald.
VW T3 GTi Camper 2,0l

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937carrera
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Re: Engine rebuild thread - for fun only

Post by 937carrera »

:ok

I think that's close enough to declare Aidan the winner, though Titus was getting even closer on the equipment side.

Not a chainsaw, but a leaf blower, many of them they use the same Husqvarna 25cc two-stroke engines anyway.

It was given to me as a non runner "you like messing with stuff don't you"

Having checked the presence of spark and fuel, I did a compression test, only 4 bar so I pulled her apart.

The piston ring was stuck in the groove, which is the point at which I took this photo.

Using diesel and a very small screwdriver, I got the ring released, the groove was full of carbon deposits. Having removed the ring I cleaned it up with more diesel and a green kitchen pad, the inside edge of the ring was rough with carbon. I was just giving it a final clean on the inner edge when I applied a bit too much pressure and snapped the ring :roll:

Knowing the previous owner, I am doubtful that they will have mixed the fuel correctly, the top of the combustion chamber is black with deposits too. I suspected no oil, but looking at the deposits I now suspect too much oil. There's only minor scuffing on the piston. They are so tiny, 34mm I think.

I think I'll just order another ring (£3.48 aftermarket), reassemble and see if I have a runner.

..... of course if others have different thoughts, post away, as I have never done much with two strokes
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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itchyfeet
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Re: Engine rebuild thread - for fun only

Post by itchyfeet »

937carrera wrote: leaf blower

Pointless, noisy and environmentally unfriendly things, best leave it broken.
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
itchylinks

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937carrera
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Re: Engine rebuild thread - for fun only

Post by 937carrera »

itchyfeet wrote:
Pointless, noisy and environmentally unfriendly things, best leave it broken.

Not completely true, good diagnostic tool for finding micro leaks in exhausts.

Oh, and it has a suck mode as well as blow
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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