Cam chain heavy duty vs. stock

[gsryder]

I bought a heavy duty cam chain off ebay a Camellia its says for GS 1100 / 1150 drag bikes.

When I pulled my old one out and compared the two they are the same I even measured with calipers.

So either my used engine I bought already had a heavy duty chain in it or the one I bought is not what they say.

Does any one have a picture of the two side by side or is there a distinct difference that I could tell if mine is truly a HD chain.

This is the exact one I bought
http://cgi.ebay.com/Heavy-Duty-Suzu...?cmd=ViewItem&pt=Go_Karts&hash=item5192bfbefb

Any help would be appreciated.

 

[Nessism]

Tsubaki

 

[gsryder]

Tsubaki

Right.......but is it HD or stock replacement???????

 

[Big T]

I'm sure Ray or one of the drag racers will correct me, but that's a stocker

Check the APE catalog, if anyone has a HD, it's them

I checked, it's Tsubaki, $51

 

[Nessism]

Next question is: why do you need a HD cam chain?

 

[gsryder]

Going for a turbo build, I couldnt actually tell you why I assume stronger is better but other than that just because thats what everyone else that has done a similiar build has recommended.

 

[Steve]

Next question is: why do you need a HD cam chain?

Going for a turbo build, ...

Turbo shouldn't put that much more strain (if any) on a cam chain. :-k

Turbos live best with mild cams and valve springs, not the radical cams with heavy springs needed to close the valves because of the radical cams. I would worry more about the clutch basket than the cam chain.

.

 

[Guest]

Don't forget the APE studs

Worn out stock versus HD

Oh yeah the cam chain guide also

 

[gsryder]

So I am guessing that the chain I bought is not HD then *#!@#$#@!!.
I may not need it but at this point with the engine torn down why not put it in.

Chef I already have the heavy studs but not the guide.
It appears the one on the left is the HD the only diff I can see from the pic is that the barrels seem a little beefier is there any other difference????
Also I see you have the same package Camellia chain there is that the HD???

Steve I will be running stock cams and valve train and I agree it probably wont add much strain but I would rather be safe than sorry and I am putting in a new one anyway.
Steve the clutch basket is next I have two stockers I need to inspect and then get the heavy duty backing plate and springs. Actually I was just reading about that is there a source to buy the springs and the plate?

 

[Greg B]

The barrels look beefier. So I imagine the pins are probably larger dia. Looks like the side plates are thicker too. Don't forget the things you can't see with the eye. Like heat treating and material properties.

 

[Guest]

I am not positive, but I think Chef is showing that the chain is streched versus the new one. Just a thought...

 

[TeamDar]

The Camellia timing chain IS the heavy duty chain made by Tsubaki. That is a good price also. Relax. Dar

 

[gsryder]

The Camellia timing chain IS the heavy duty chain made by Tsubaki. That is a good price also. Relax. Dar

Thank you Dar sweet and to the point!

 

[rapidray]

Also, with a hair dryer you DO need the heavier valve springs (unlike someone above posted!) on at least the intake side so the turbo boost doesn't blow the valves open! Stock springs are too weak for boost on the intake side & I would put them on both sides & use the GS1150 cams. Make sure you retard the timing when you start getting it up on boost if you don't want your pistons to look like Chef's last set!!! Ray.

 

[gsryder]

Thanks ray I have already been looking into valve springs, I think I already have 1150 cams in the engine that I bought but I need to check and make sure. Dully noted on the timing.

Thanks