I'm no expert on later heads but it looks like your 1974 pic (TK-4) maybe has a Z1000 head fitted? Has a 8mm to 6mm stepped stud been used? No it's got 6mm studs however it had a few broken off studs and then was drilled out damaging the internal theads so it was repaired by having inserts installe...

Yes I've had two fail of the past few years burnt out and melted. I've been told from a very well known racer and restorer (now retired) in these parts.. That this is common you get one's that go forever and you get one's that go fizz! I guess what do you expect from something made by Randy in Bum F...

There are many slight variations on the Z1 heads. Picture here might help you. You can see it if you look carefully by the exhausts Super informative, my 1974 Z1A has an "4" my 1976 Z900A4 has an "5" but the 1975 Z1B has a "2" so definitely an early casting? All the bi...

Hello, more of an interest point, does anyone know about casting differences between the 900's ? I have a 74 a 75 and a 76 all have original engines but I've noticed that the 75 has a difference in it's head casting than both the 76 and the 74. They all are original 900 heads with the 6mm exhaust st...

Hot on the heals of the z900, look what turned up on my trailer today.....

Can anyone here help..... I purchased a z900 from Australia and imported it into New Zealand as a project, I have now gone to register it but there is no record of it being registered in Australia. Turns out it was imported into Australia from the USA. Now I've found the title on the USA dmv... but ...

Would you ship to New Zealand..?

Well all the bits and bobs turned up just before Christmas so got to work over the last week, and the results I'm well pleased with, just need to take it to the NZTA to get road registration etc... Rebuild went with out any issues, not even a small one just how I like it, 8 and a bit week build grea...

Haven't posted for a couple of weeks, engine is now back together and just waiting on the exhaust system which is stuck in customs...
Was hoping that it would be on the road before Christmas but early January is looking more like it.

What more could anyone want, 1975 Z1 900, 1976 Z900A4 and a 1972 BDA escort rally car.. Many hours of fun in the garage..
Gotta love the 70's

Been busy but have managed to get most of the bike back in one piece, just waiting on a few small bits and pieces. Found out that the gasket set i had didn't come with any 'O' rings so I'm waiting on those before putting the engine back together. With a bit of luck I'll get all the parts in a couple...

Engine now coming together, waiting on a new cam chain and rollers etc etc and clutch plates, Boring the cylinders 50thou over.
But the weather was nice today so I went for a ride on my Z1B instead!

Engine stripped down and back from the vapor blaster spent a day polishing up the other alloy parts, just need a couple of bits and it's ready for reassembling... moving along nicely should have it ready to ride soon....

Arhh many cups of coffee used today, decided as it was a nice day 22degs so I prepared the frame, swing arm and stands and painted them all.... moving along nicely only had the bike 3 days!

zapo wrote:I agree go for it.

Yes that's the way two very fine looking bikes..

Got stuck in today and will prep the frame for paint tomorrow have a big box of new parts that came with the bike so I'm hoping it will be a quick build, just in time for your summer.