timing chain wrong ?

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motostorm
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timing chain wrong ?

Post by motostorm »

just got a did timing chain , sca0412a sdh-152le , seems the correct cain listed wemoto etc , all years also list as part , but its the wrong chain 1mm too narrow ,
trying to google search issues and on site , but theres so much cct topics , i cant find any relevent info ,, waiting on a call back from supplier

anyone run into this ??

i havent heard of any probs ,, ?? slightly confused here ! :eh:

its the first time ive bought a firestorm camchain ,

??
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Wicky
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Re: timing chain wrong ?

Post by Wicky »

http://www.davidsilverspares.co.uk/part ... ber_22416/

Never heard of them needing replacing

This list seems to show that there isn't a DID (SCA0412ASDH?) equivalent to the Honda part no (14401-MBB-003P)

http://www.sydfynsmcservice.dk/honda/ho ... kaeder.htm
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

Wicky wrote:http://www.davidsilverspares.co.uk/part ... ber_22416/

Never heard of them needing replacing

This list seems to show that there isn't a DID (SCA0412ASDH?) equivalent to the Honda part no (14401-MBB-003P)

http://www.sydfynsmcservice.dk/honda/ho ... kaeder.htm
thanks wicky , the cct went , timing out on both cams , only clipped two valves , but chain was riding over inlet cam sprocket without turning (just as it was coming on cam) id say the chain is scrap, very sloppy too ,, head is good , valves done new chain fed through , cams in , but listed did chain supplied is 10mm across outer link , chain that came out is 11.5 mm . wont sit on sprockets,,,,, 100 percent wrong fitment , but is correct listed part ?????

:x :x

surprised , cant find more info cant be the first ,,
even got parts man to measure another in case i had wrong chain in box , 10mm v 11.5mm :sad2
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

well ive ordered another chain from silvers as listed above ,

as i dont have time to be investigating i need to get this bike sorted ,

its an odd one , im sure some of the wise mods or other storm experts might be able to help with an explanation ????


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sirch345
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Re: timing chain wrong ?

Post by sirch345 »

motostorm wrote:
thanks wicky , the cct went , timing out on both cams , only clipped two valves , but chain was riding over inlet cam sprocket without turning (just as it was coming on cam) id say the chain is scrap, very sloppy too ,,
Are you saying the cam chain was still slipping over the inlet cam sprocket with the new CCT fitted :?: If it was doing that with the failed CCT that would be normal, highly unlikely anything wrong with the chain. Unless the engine has been really well abused in it's life, the cam chains should do around 100,000 miles.

**EDIT**
I've just realised who your are on here, I'm probably telling you how to suck eggs :lol:

Chris.
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

sirch345 wrote:
motostorm wrote:
thanks wicky , the cct went , timing out on both cams , only clipped two valves , but chain was riding over inlet cam sprocket without turning (just as it was coming on cam) id say the chain is scrap, very sloppy too ,,
Are you saying the cam chain was still slipping over the inlet cam sprocket with the new CCT fitted :?: If it was doing that with the failed CCT that would be normal, highly unlikely anything wrong with the chain. Unless the engine has been really well abused in it's life, the cam chains should do around 100,000 miles.

**EDIT**
I've just realised who your are on here, I'm probably telling you how to suck eggs :lol:

Chris.
hi sirch (chris) , i am happy to hear any advice at all , no sweats there , what i was saying was that the motor was running , after the front cct let go , when it came to me , i gave it a quick start (all i knew at the time was there was a prob , ) the cct let go and the owner pulled in and shut it down , but when started it was running on the back , and the front cylinder sounded destroyed , so after inspection (i expected the worst ) the timing was out on the exhaust but all was in order , the inlets had clipped and it seems the inlet cam was pushed into position just before opening and instead of turning the chain was catching and jumping over the inlet sprocket , this was what was happening as i turned the engine by hand after lifting the rocker cover , and was the source of the massive noise i had expected to be a dropped valve or similar , theres no way i could use this chain with any piece of mind ,
the problem is not this in its self , ive never bought of fitted a chain to a storm , and was surprised to find it was 1.5mm too narrow to sit on the srockets , but all investigating so far doesent show that ive recieved an incorrect listed part ,
2 parts suppliers say this is the part i require and it clearly isint , a quick root shows no changes to the chain ?? both suppliers have measured a chain from stock accross the link and it shows the one i recieved is the correct part.......? but its hard to find any info , because a google search just throws up twenty pages of failed cct issues :crazy:

surely im not on my own here ?

inlet sprocket looks perfect btw :thumbup: ,

ive ordered another chain from ds spares , said to be an oem manufacturer part , ill report back , the main thing for me is to get the bike done ,

oh lord :roll: :lol:

:thumbup:
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sirch345
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Re: timing chain wrong ?

Post by sirch345 »

That is rather weird, both to what's happening and to the part numbers etc.

Just to recap, you've had the head off and all the valves out. Now all back together with straight valves and new CCT fitted?

Turning it over by hand, as soon as the inlet cam lobes come into contact with the valve stems the chain starts to jump over the cam sprocket due to the load put on it? or do the valves partially open before the chain jumps the sprocket.

What about the exhaust cam wheel, does the chain jump over that too as soon as the lobes touch the valve stems?

Chris.

PS. I'm back again, have you tried to turn the cam sprocket (immediately as the chain wants to slip) manually, such as fabricating something to fit into the holes in the cam sprocket if possible. Go very easy if you try that (I don't want you blaming me if something goes wrong :) ), you should be able to tell if with a little bit of help from you the sprocket will turn, or whether something is jambing it solid.
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

no sorry chris , what i meant was before any work , the cct failed , and the engine ran (albeit sounding like it was f*kd ) when i started it when the guy brought it to me , the clatttering was unreal , switched it straight off , pulled the cam cover , turned the motor by hand an the noise was the chain jumping on the rear cam inlet front cylinder instead of turning it , i.e the resistance to jump the sprocket was less than to open the valves because the tensioner failed , this is why i must change the chain :thumbup:

i have the work done , my only problem is the chain supplied is wrong , its 1 or 1.5 mm too narrow to fit on the cam sprocket teeth , but 2 partsmen swear this is the correct part when it isint , and im wondering has anyone encountered this ?

thats all :biggrin :biggrin :thumbup:
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sirch345
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Re: timing chain wrong ?

Post by sirch345 »

:oops: I think I may have got my wires crossed a little as well.

Good luck with the new cam chain, the problem you're experiencing is one I've not come across before. Hopefully this one will be the correct size :thumbup:

Chris.
tony.mon
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Re: timing chain wrong ?

Post by tony.mon »

When you say too narrow, where is it too narrow?
On the cam sprockets?
Or the crank sprocket?
Or the tensioner blades?

I could send you a knackered one from a Storm engine, for comparison purposes, if that helps.
But why not take your old one to the dealer with the new one and let them do the comparison?
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

tony.mon wrote:When you say too narrow, where is it too narrow?
On the cam sprockets?
Or the crank sprocket?
Or the tensioner blades?

I could send you a knackered one from a Storm engine, for comparison purposes, if that helps.
But why not take your old one to the dealer with the new one and let them do the comparison?

ive a new chain ordered , ill get back :thumbup: ,,, the listed (did) chain , is 1mm to narrow in width to sit on sprockets
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lumpyv
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Re: timing chain wrong ?

Post by lumpyv »

just reading all this , is this not just a simple packaging mistake? ?
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motostorm
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Re: timing chain wrong ?

Post by motostorm »

lumpyv wrote:just reading all this , is this not just a simple packaging mistake? ?
nah , thats the reason i started the thread , two parts suppliers told me i had the correct part , measured over the phone etc ,,,

sorted now , the did listing appears wrong , i will update after supplier recieves , incorrect chain , and contacts me :biggrin :thumbup:
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