My chain touches the floor .

zukdave wrote: Right now with 530 chain I'm geared 16-45 but then I 1/8th. mile drag race mine.

:woohoo:

But relaxed cross country cruising --- somebody else's. :lol:

Good Fortune!

Patton wrote:

zukdave wrote: Right now with 530 chain I'm geared 16-45 but then I 1/8th. mile drag race mine.

:woohoo:

But relaxed cross country cruising --- somebody else's. :lol:

Good Fortune!

Got that covered with this,

hopefully my bike will be a nice cruiser . got a harley fender and shocks so yea . Thats a nice yamaha !

Okay so can anyone refer me to a new front sprocket . I can not seem to find a 630 front sprocket for a kz750 twin 1979 . 15 16 or 17 tooth . I see other bikes especially the 80s but unsure of compatibility

Send all that 630 stuff back and get a 530 setup.

personally i like the big gold chain lol and alreay have it shortened and the rear sprocket to match . I just need a 630 front sprocket .

Thanks, Ed!

kawasaki.com shows 106 link 530 chain and [strike]17[/strike] 16 tooth engine sprocket [strike]13144-1009[/strike] 13144-063 and that the sprocket is shared on various Kawasaki models including:
KZ750-B1 (1976)
KZ750-B2 (1977)
KZ750-B3 (1978)
KZ750-B4 (1979).

And further shows "Active limited quantity."
Active means available.
Could inquire at Kawasaki dealership.

Google and ebay searches using the part number returned multiple hits for aftermarket sources.

Fewer teeth will result in lower overall gearing for increased rpm at any given road speed. Which translates to faster acceleration with much buzzier cruising rpm.

A 630 chain won't fit a 530 sprocket.
A comparable diameter 630 sprocket has fewer teeth than a 530 sprocket.

Schmeck wrote: Okay so can anyone refer me to a new front sprocket . I can not seem to find a 630 front sprocket for a kz750 twin 1979 . 15 16 or 17 tooth . I see other bikes especially the 80s but unsure of compatibility

As the stock sprocket is a 16 tooth 530, it's very likely that a 16 tooth 630 sprocket would be way too big. And would imagine the aftermarket's 16 tooth sprockets are the stock 530 size.

Good Fortune!

Patton wrote: kawasaki.com shows 106 link 530 chain and 17 tooth engine sprocket 13144-1009, and that the sprocket is shared on various Kawasaki models including:
KZ750-B1 (1976)
KZ750-B2 (1977)
KZ750-B3 (1978)
KZ750-B4 (1979).

And further shows "Active limited quantity."
Active means available.
Could inquire at Kawasaki dealership.

Google and ebay searches using the part number returned multiple hits for aftermarket sources.

Fewer teeth will result in lower overall gearing for increased rpm at any given road speed.
Which translates to faster acceleration with much buzzier cruising rpm.

A 630 chain won't fit a 530 sprocket.
A comparable diameter 630 sprocket has fewer teeth than a 530 sprocket.

If the stock sprocket is indeed a 17 tooth 530, it's very likely that a 17 tooth 630 sprocket would be way too big. And would imagine the aftermarket's 17 tooth sprockets are the stock 530 size.

Good Fortune!

Kawasaki.com shows the 17 tooth sprocket for the 1977 & 1978 KZ750 B1 and B2, but not the 1978 & 1979 KZ750-B3 and B4. I know that the KZ750-B1 yellow question mark "Where is it Used" shows the KZ750B3 & B4, but if you look at the KZ750B3 and B4 specific diagrams (see image below) they show the 16 tooth sprocket (part #13144-063) as standard. The yellow question mark often shows a larger group than the actual diagrams. As an example, if you click on the yellow question mark for the KZ750-B4 engine sprocket is shows the 16 tooth sprocket is used for the KZ750B1, B2, B3 and B4. Kawasaki.com can be rather inconsistent. Ed

Schmeck wrote: So I bought this 96 link 630 chain along with a 32 tooth rear sprocket. The new chain fits the rear sprocket but on the front it can slide side to side . My current chain is 102 links or whatever stock is. The new chain is 96 links but clearly longer ( see pictures) then the original chain . New is gold old is rusty. They both seem the same width on inside but the distance between rollers is more on the new chain. Is my original chain a 530? The new chain is alot bigger considering it has orings and old doesnt. Anyone else run into this problem? btw chain in my hand is what came on the bike .

Attachment image_2013-11-22.jpg not found

To re-cap, what's happened here is that the 630 chain is simply the wrong size chain.
With anywhere near the same number of links as the old 530 chain, the new 630 chain would be expected to touch the floor, because it's overall length is much longer than the old 530 chain. Never mind that the 630 chain will not fit on either of the old 530 sprockets.

If determined to use the 630 size chain, new 630 sprockets will also be required. And the new 630 sprockets will have fewer teeth than the old 530 sprockets.

It would be easy enough to determine which size 630 sprockets would produce relatively stock gearing. But whether such 630 sprockets are readily available is another matter.

Lots of good info on kawasaki.com, including parts diagrams, part names, part numbers, models sharing same part, availability, etc. Here's a link for help with navigating the site and finding information.

www.kzrider.com/forum/13-bike-related/37...imitstart=0&start=20

Good Fortune!

Schmeck wrote: personally i like the big gold chain lol and alreay have it shortened and the rear sprocket to match . I just need a 630 front sprocket .

32 tooth rear 630 sprocket and 630 chain, and needing a front 630 sprocket, to produce relatively stock gearing.

16:38 stock 530 sprockets
converts to 13.47:32 630 sprockets

(Somebody please check the math.)

A 13 tooth front 630 sprocket would produce slightly lower gearing than stock (being more rpm at any given speed).
A 14 tooth front 630 sprocket would produce slightly higher gearing than stock (being less rpm at any given speed).

Am thinking more KZ750 twin riders would prefer the 14 tooth front sprocket in this particular scenario.

Good Fortune!

The splines machined inside the front sprocket must match and mesh with the splines on the transmission output shaft.

Most of the aftermarket literature deals with converting 630 to 530, with 530 sprockets being available incident to the conversion.

I don't know which Kawasaki models might use a 14 tooth 630 front sprocket that happens to also fit the 1978 KZ750 twin's output shaft. And am unaware of which Kawasaki models might share the same spline dimensions (which could suggest a stocker's 630 sprocket having the same spline dimensions).

Another option would be to have a 14 tooth 630 front sprocket custom made.

Good Fortune!

I checked z1 and they had a 16 tooth 630 front sprocket . part :BAJTF518-16 - 630 (JTF518 series) 16T Fr Sprocket which is suppose to fit. I do fear I might have to machine a new chain guard , because my chain is already so close. Also while working on the 630 chain I was reading about a lot of bikers breaking there tools off and having to grind the heads off the rivets before breaking the chain link. I have found you wont break the tool as long as you take your time and in doing so have the rivets completely intact if you need to re-use them.

Thanks for helping (all) , There is a lot of do not know so thank god there are places like kzrider where experts can explain how things work to the inexperienced lol