Got mine on Thursday, was just too lazy to really fart around with it.

Hooked it up to a battery tonight. It works great! Bright! The line of vision isn't what you'd expect. You have to kinda look at it at a fairly severe angle. If you are mounting it in place of stock gauges (at that angle) and have standard bars, you may find it a bit dim.

I mount my gauge in front of the tree over the light with a fairly severe angle so that when I am tucked it's still in front of me. Safety first! I don't want to have to look down at speed to see my gauge.

Anyhow, here's a few pics, for size and color perspective. Forgive the low quality on them, I was taking these in a low light situation in the basement shop.

Lots info there!

Here are my thoughts on this swap. The answer would depend on what year the 650 is. If it is a 76-79 no, because of the cam chain set up and mountings in the 750's head casting for the cam chain assembly. But if the 650 motor is from 1980 onward it should fit as the 650 changed to a similar cam chain set up as the Gpz used. You will probably need to use a 750 head gasket.

The motor is a 79 KZ650. The cams I am planning to run are the GPZ750A standard cams. I've already swapped over the KZ650 cam gears onto them to prepare for the event.

The head should bolt on but if I am not mistaken the bolt holes on the front center and back center of the 750 head (hidden underneath the camshafts) are larger than the bolts that fit into the top of the 650 stocker's jugs. On my 650 head to 750 jugs I had to open up the bolt holes on the 650 for the 750 bolts to fit through. This might cause a problem if you use the 650 bolts with the 750 head as these two bolts might not seat properly in the head's bigger bolt opening. Bottom line is that you will probably need to enlarge the bolt hole openings in the 650 jugs to accept the 750's bolts.

I asked about KZ650 jugs for the benefit of the people running them. I'm running KZ750 jugs, and was planning on ordering a set of the studs from APE. I don't mind doing a little boring work at all though.

You also have to make sure that the cam chain, adjusters and sprockets from the 650 motor will be compatible with the Gpz head and camshaft sprockets.

See above. Running GPz cams with KZ650 cam gears. (Also planning on running a manual cam tensioner from APE)

The benefit of using the Gpz head would be better high rpm power and breathing due to slightly bigger ports, larger valves and slightly bigger combustion chambers. The downside is that with the Gpz exhaust cam you cannot use the stock tach drive as the Gpz exhaust cam doesn't have the tach drive gear machined into the cam.

Running my new Electrosport Acewell digital speedo/tach, which reads from a coiled wire around the spark plug wire, so the tach drive is irrelevant in my situation.

So basically, the cams are the main benefit, followed by the bigger valves and bigger Com.Cham.? Hmm... decisions decisions. Would it be easier to mod up a GPZ head to fit my setup, or to mod a KZ head with the valves from a GPz and port the hell out of it? :evil: :lol: And on top of that, would it be more reliable/powerful to use the GPz head over the KZ head given those comparisons? I dunno.... :side:

Post edited by: caffcruiser, at: 2006/12/08 23:06

I'm just calling them every friday for a 2800 series, their speedometer supplier is European (acewell) and they make the decisions about what to send to their distributors, regardless of what the distributors are low on. Their speedometer drives are availiable in various types, including mechanical..I haven't found out if their mechanical interfaces fit a KZ though.

And having a non-functional speedometer is a good enough reason to get what I really should have anyway. I've looked at Dakota Digital, but their prices are rediculous.

If you don't mind going to a stock setup, you can probably get one sooner and a bit cheaper going used. I'm just going to keep calling em til they either get a restraining order, or get my speedometer in stock.

Yeah same here. I hope they come in sooner than that.

the only thing i know is they are out of every guage for another month and i need 1 now damn

Electrosport. Probably the same place you are looking as they are out as well. Looks like it would be a nice clean setup and would work good on my bike. Let me know if you hear anything about where else to get them.

Turn offf your cap lock .. Looks like your shouting .. Be user Friendly on KZR ,, Signed , Old and Grouchy

IVE BEEN LOOKING ALSO BUT CAN ONLY FIND ONE SUPPLIER IN THE STATES AND THEY ARE OUT WHERE DIDI U FIND THEM

I am looking at getting rid of my old gauges as they are not the correct ones for my model year and are just rigged to work. I want to get a clean look and have recently discoverd the Acewell line of gauges. I was looking at the model ACE-2802 because it has the indicators that I want. Does anyone have any experience with using one of these? Do they install easily and are they reliable? I am putting it on a 1976 KZ900. Thanks!