630 Chain Conversion

My 84 GPz750 has a 630 chain with 15 front/38 rear sprockets and its time to change them. Since the 630 chain cost a fortune I'm looking at a 530 conversion. Whats the choices do I have to changeover and have similar gearing?

Here's a good resource for information on what you want to do:

www.z1enterprises.com/reference/chain630to530.aspx

They are also a great resource for buying the parts to do it.

Since the 630 chain cost a fortune

Due to torque specifications and tesnile strength requirements of the 530 chains, how is the 630 a more expensive chain?

Pricing of the Ek-Chain ZZZ series and the DID chains of the same strength I found there's not that much difference.
In most cases I found the 530 to actually be more expensive.
Granted more colors to choose from but other than that, what am I missing here...

OMR

Just be aware that you are going to need an offset sprocket for the GPz750, as that's what's on it stock.

Good luck finding one, I found two that were left over from a group buy and bought both of them.

I believe 18/45 in 530 size gives you stock gear ratio, that's what we have on the GPz750 motored 79 KZ650 SR right now. You need at least a 17 tooth front sprocket to keep from eating the swingarm with the chain.

For the 530 conversion on the GPz750 Turbo, after we found out that a 56 tooth rear sprocket was going to cost us $120 we decided to stick with the 630.

And before anyone asks, the Turbo has different primary and transmission ratios than the non Turbo GPz, it runs a 3.07 final drive ratio to make up for it.

After reading all the above I'll stick with the stock chain, makes it much easier.

gaillarry wrote:

After reading all the above I'll stick with the stock chain, makes it much easier.

That's what we figured on the 750 Turbo