Yamaha Thundercats
Would you like to react to this message? Create an account in a few clicks or log in to continue.

I think I have found why my stroker won't run

Go down

I think I have found why my stroker won't run Empty I think I have found why my stroker won't run

Post  weasley on Sat Oct 23 2010, 18:28

Piston...
I think I have found why my stroker won't run 1fd8m1

Cylinder...
I think I have found why my stroker won't run 1fd8m5

Top piston 'ring'...
I think I have found why my stroker won't run 1fd8my

Likely diagnosis is that the top ring was fluttering and caught the inlet port. The engine died immediately and, unsurprisingly, wouldn't run again. The ring got locked between the piston and exhaust port meaning, at first, I couldn't even get the barrel off the engine as it wouldn't pull off of the piston. I managed to pull the ring out with a pair of pliers and the lot came apart then.

I have a replacement barrel, piston kit and gaskets ready to get this going again through the winter. Fingers crossed.
weasley
weasley
Admin2
Admin2

Male Status :
Online
Offline

Number of posts : 1501
Hobbies : Yes
Humour : Yes
Registration date : 2008-11-07


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  terry lees on Sat Oct 23 2010, 20:55

ouch!
terry lees
terry lees
4Gold
4Gold

Status :
Online
Offline

Number of posts : 1026
Registration date : 2009-04-20


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  yamahamad on Mon Oct 25 2010, 08:30

Oh dear no wonder it did not want to run. Are you having it bored out or relined?
yamahamad
yamahamad
5Gold
5Gold

Male Status :
Online
Offline

Number of posts : 1983
Hobbies : Bmw technician. Weight training. Music. Beer.
Humour : big american 4x4?
Registration date : 2009-11-16


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  SteveCat on Mon Oct 25 2010, 09:27

Oops
SteveCat
SteveCat
Admin2
Admin2

Male Status :
Online
Offline

Number of posts : 5065
Humour : You've gotta be joking
Registration date : 2008-11-06


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  weasley on Mon Oct 25 2010, 13:05

I sourced a second-hand barrel off of Ebay - turns out these engines make rocking horse sh*t look as common as dog poo!

Anyway, the barrels are plated so you can't bore and hone without replating, which is really expensive. I have found a place that will sleeve it with a steel liner, so no replating necessary and you can bore and hone easily afterwards - I might have this barrel done as a spare if they can do it with this damage.

I am currently stuck though as the studs in the old cylinder refuse to budge, and I need them to go in the replacement cylinder. I must admit I have only tried the locked nuts removal technique so far - next stop, FIRE!!
weasley
weasley
Admin2
Admin2

Male Status :
Online
Offline

Number of posts : 1501
Hobbies : Yes
Humour : Yes
Registration date : 2008-11-07


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  yamahamad on Mon Oct 25 2010, 21:13

Have you tried freeze spray? We use it at work on certain things you cannot either warm up or get the really big hammer to. The stuff we use is called rostoff ice freeze spray, may just work.
yamahamad
yamahamad
5Gold
5Gold

Male Status :
Online
Offline

Number of posts : 1983
Hobbies : Bmw technician. Weight training. Music. Beer.
Humour : big american 4x4?
Registration date : 2009-11-16


Back to top Go down

I think I have found why my stroker won't run Empty Re: I think I have found why my stroker won't run

Post  weasley on Mon Jan 10 2011, 13:31

Yesterday my wife took the kids out for a few hours so I rolled up my sleeves and, after months of hording the necessary parts from eBay, I set about lashing them onto the bike. Unlike any job I usually do this went like clockwork. From first spanner to pouring in the coolant was 3 hours. After a spot of lunch I then went out to try and kick it into life. Well, it was quite a workout but, after much sweat and a few expletives it fired and ran sweet as a nut!

Still plenty to do - the battery is toast and I suspect the reg/rec so will test that and see (easier now it's running!). However it doesn't need a battery to run, just for lights etc when not running. The clocks are smashed up and useless - I have spares but the wiring loom seems to be from a different bike so I have some wire tracing and remodelling to do. The forks and front wheel, it turns out, are from a different bike too, so the new speedo cable I have doesn't fit at the bottom - more botching required. There are probably a load of other things too - I plan to get it MOTed to see what needs doing to pass an MOT - at least I can ride there and back now (it's insured and taxed).

It's a very satisfying feeling though, turning a pile of bits into a living, breathing engine and seeing it run.
weasley
weasley
Admin2
Admin2

Male Status :
Online
Offline

Number of posts : 1501
Hobbies : Yes
Humour : Yes
Registration date : 2008-11-07


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum