camchain size?

Hi Taffy,

I don't think so I went through this as you remember when I fitted that cam chain that was too tight, thought there was different variations of sprokets for certain years but all the part numbers are the same apart from the ally one of course but that still has the same pitch.
Fitted a DID cam chain and this was perfect, the chain I was first supplied was Regina but to me it looked cheap crap unlike the DID it had split rollers, I thought Regina had stopped making cam chain,it came in a Regina box but that was all no Regina name on the links unlike DID. I think I recall one of your posts about cam chains Taffy describing one as a bit like marzipan.

Regards

Sparks.

RE: Re: camchain size?

sparks
the later bergs use the did chain this does not fit the early sprockets-i had to change a 2004 550 chain which was did because the SPLIT ROLLERS HAD STARTED TO BREAK it was missing 10 of these.I had only one choice of chain and that was the original part with the split rollers.There was a regina chain available that was not spit rollers but now i cant get it here and was supplied with a split roller type.I am a bit nervous to use it even though the importer swears that its a cam chain(ON THE BOX CART CHAIN) suitable to use upto 2002 year ?

Re: RE: Re: camchain size?

nzberg said:

sparks
the later bergs use the did chain this does not fit the early sprockets-i had to change a 2004 550 chain which was did because the SPLIT ROLLERS HAD STARTED TO BREAK it was missing 10 of these.I had only one choice of chain and that was the original part with the split rollers.There was a regina chain available that was not spit rollers but now i cant get it here and was supplied with a split roller type.I am a bit nervous to use it even though the importer swears that its a cam chain(ON THE BOX CART CHAIN) suitable to use upto 2002 year ?

Click to expand...

nzberg, the first chain I was sent was Regina or so called cut it to 66 links (550) installed without tentioner tight as hell no free play at all this chain had split rollers, so I ordered a DID fitted perfect the DID chain has seamless rollers. So if what you are saying is correct the Regina chain I received wasn't Regina because it has split rollers.
So the first chain I received which I would class as a Marzipan chain is for pre 04 and the DID is 04 onwards, this is rediculous so if you have a 03 and want to use DID you have to replace both sprockets as well.
Froggy when you replaced your cam chain for a DID did you replace your sprockets as well.
There is something definatly a foot here.

Regards

Sparks.

just to add a little confusion, i changed the original IWIS chain at about 100 hours on my 04 450 because the tensioner was at about 60-70%. it has split links. put a did chain in based upon its reputation. after about 15 hrs i could hear a noise that sounded like chain so i pulled the tensioner and found that it was at about 75%. got a new one from dan and asked for a non - did to see if there is a difference. i can't id the new chain but its p/n 810 3601 3000 for a 650. its got a 3 inside an m on the linkplate. after trimming the extra links, it fits great. so whats up here?

ned37 said:

just to add a little confusion, i changed the original IWIS chain at about 100 hours on my 04 450 because the tensioner was at about 60-70%. it has split links. put a did chain in based upon its reputation. after about 15 hrs i could hear a noise that sounded like chain so i pulled the tensioner and found that it was at about 75%. got a new one from dan and asked for a non - did to see if there is a difference. i can't id the new chain but its p/n 810 3601 3000 for a 650. its got a 3 inside an m on the linkplate. after trimming the extra links, it fits great. so whats up here?

Click to expand...

Hi Ned,

Seasons greetings, yes the first chain I was sent was the same as your picture so called Regina and this has split rollers, not a good sign for a quality chain. When I tried to fit this chain the two ends that drop over the sprocket one end had to be pushed down so the link could be slipped in, when installed the chain was tight and when rotated felt Knuth.
The DID chain I fitted fit perfect with just a small amount of free play before the tensioner was fitted.
I have just removed the top end to do the valve springs and cam, the engine had covered just over 50 hours and the wear in the chain was negligible.
One thing I can't quite understand is why the adjuster spring tension should be so great.
Due to the direction of rotation this is the side that has negative tension, could there be some problem here in some cases where the cam chain has to much tension which is accelerating the wear.

Regards

Sparks.

ned37 said:

just to add a little confusion, i changed the original IWIS chain at about 100 hours on my 04 450 because the tensioner was at about 60-70%. it has split links. put a did chain in based upon its reputation. after about 15 hrs i could hear a noise that sounded like chain so i pulled the tensioner and found that it was at about 75%. got a new one from dan and asked for a non - did to see if there is a difference. i can't id the new chain but its p/n 810 3601 3000 for a 650. its got a 3 inside an m on the linkplate. after trimming the extra links, it fits great. so whats up here?

Click to expand...

Hi Ned,

Seasons greetings, yes the first chain I was sent was the same as your picture so called Regina and this has split rollers, not a good sign for a quality chain. When I tried to fit this chain the two ends that drop over the sprocket one end had to be pushed down so the link could be slipped in, when installed the chain was tight and when rotated felt Knuth.
The DID chain I fitted fit perfect with just a small amount of free play before the tensioner was fitted.
I have just removed the top end to do the valve springs and cam, the engine had covered just over 50 hours and the wear in the chain was negligible.
One thing I can't quite understand is why the adjuster spring tension should be so great.
Due to the direction of rotation this is the side that has negative tension, could there be some problem here in some cases where the cam chain has to much tension which is accelerating the wear.

Regards

Sparks.

the chain in my pix with the odd logo (regina?iwis?) has split rollers smilar to the stock iwis. the fit in the cam gear was perfect. but the did fit nicely too. all three chains appear good quality, with the did having solid rollers.
measured all three and found something interesting. all three are essentially identical when it comes to pin to pin center , roller gap and inside side to side measurements. however, the outside width is different on all three with the did being the skinniest. (did .424, iwis .440, and the new one (whatever it is) is .470) now since the chain runs on the guides using the outer link plate as a foot, it makes sense that my new chain sits higher on the tensioner blades and is thus somewhat tighter (initially) i suspect that shortly it will join the others at 60% or so as it cuts a new groove. look at the attached pic to see a side view of the width differences with the did in front, next is the original iwis (.016 wider), and the new chain in the rear (.030 wider than the iwis and .045 more than the did).
so maybe the pitch issue is not an issue?

Sounds like thats the answer. i think the did i replaced that had lost the split links was a seamless chain so the part was probaly a update but the first regina chains i bought ,3 at once because they werent the rght lengths were seamless.I used one and a half in my 470 then used the rest in a 400 so i ordered a nother for a spare what turned up was not the same it had split rollers and was in a red PRO CART regina box.I was not happy,i got onto the importer and was told that the seamless chain was no longer available and this was it and it was sutable for cam chain. so i will sell it to a customer and see what happens after all its only driving a cam and its in clean oil.A cart axle driving to slicks must be harder on a chain than turning a cam ??