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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Starting issue. With you tube video to help
Post Info TOPIC: Starting issue. With you tube video to help
MikeBarnacle


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Starting issue. With you tube video to help
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Ok, been looked at today by the professionals, valves have gone and has lost pressure. They said looking about £300 just in labour....

What do you think I should do?



-- Edited by MikeBarnacle on Tuesday 5th of January 2016 01:53:23 PM



-- Edited by MikeBarnacle on Tuesday 5th of January 2016 01:54:03 PM

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MikeBarnacle


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Ok, been looked at today by the professionals, valves have gone and has lost pressure. They said looking about £300 just in labour....

What do you think I should do?


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MikeBarnacle


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Intake valve gone and lost compression. Been quoted £500ish to fix.......what do you think?

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peteBLUEttr


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How many hours labour is that? 500 is a pretty megalithic cost! Valves are £58.25 each..

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MikeBarnacle


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They said all day plus anything else that's potentially wrong in there. I thinking of buying another bike and having a go at it myself. I've got good basic machanical skills so could be possible!

Ps sorry about the multiple post, hadn't noticed a page 2!

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TTRfan


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Inlet valves £27 each plus P&p - see here

Ideally, whilst you have the head off, fit new timing chain, new valve stem oil seals, and new rings. 

Have you had a look at the picture guide on removing a cylinder head Mike? 

If you can work clean and methodically it would be a breeze to do the job if you have mechanical skills.

Plenty of help available if you get stuck.

Brian



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peteBLUEttr


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Wow yours are cheap compared to fowlers Brian!! Didn't realise you sold em sorry both!

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bosi


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But what really happened to the valves? And, more important, why? The repair depends on it, right?


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'93 Japan TTR250 OE 4GY, light loud chimney, TTS600 bash plate

'89 XL600V Transalp, stock, some silver tape and zip ties here and there
TTRfan


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Have you had a chance to get the cam cover off to check if it was a slipped timing chain that caused the problem Mike?

If it was (highly likely as not much else causes bent valves) then you need to check the timing chain for wear and that the tensioner is working OK.

Brian



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MikeBarnacle


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Not had a good chase yet but I may do over the next week. Is there a guide to checking these things somewhere?

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peteBLUEttr


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ttr250.activeboard.com/t60787589/cam-chain-tensioner-failure/
www.ttr250.com/Removing_Cylinder_Head/TTR_head_removal.htm
ttr250.com/Timing_chain/TTR250_timing_chain_fitting.htm

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MikeBarnacle


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picked up a new stead today so i can continue riding whilst fixing the old stead in the mean time...... building a collection!

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peteBLUEttr


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What is the new stead?

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MikeBarnacle


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She's another TTR! Much better condition been used on road only for the last few years. Only issues to me is its got a full set of nobblies so need to get a new rear tyre, I've fitted the bar riser and high riser bars from the old bike and sorted out the cables so they are all good! Need to fit the bash gaurd underneath the engine and she's all kitted up ready to rock!

Hoping to get out next Tuesday. Looking for people to join me if anyone's about?


Oh and I've swapped the exhaust to the motad one from Brian also!

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peteBLUEttr


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Ha two TTR's eh! We will have to see a picture of this new one now.

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MikeBarnacle


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image.png

 

Will get a better picture at some point!

 

Riser bar/riser blocks all fittedimage.jpeg



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TTRfan


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Looks good!



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bosi


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Nice!
Doesn't that cylinder mudguard (or whatever it's called) restrict airflow/cooling too much?

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'89 XL600V Transalp, stock, some silver tape and zip ties here and there
MikeBarnacle


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To be honest I don't know. I haven't seen any on any other TTR's (probably for that reason) I was thinking about removing it. I can see if it was caked in mud it will be a bit of an issue, maybe good in the summer to stop rocks at high speed though. The guy I have bought it from only rode on roads so he wouldn't have discovered an issue I guess.

Thinking of changing the rear tyre to a trials tyre too and maybe the front but will see how it goes with these, they are brand new but can't remember what tyre they are. I know there pretty aggressive looking nobblies!

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peteBLUEttr


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They look like Mitas XT644 Army Special tyres to me. Good tyres. Already a cross between trials and enduro.

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peteBLUEttr


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That guard would prob help stop water from spraying up to near your HT lead. And possibly up under the tank too. Also mud.

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