Z1 903 Cylinder Barrel Bored to 1197cc

1973-77  Z1/KZ900 903 Cylinder Barrel Bored to 1197cc

Used 1197 barrel taken off a Z1 street bike - no pistons included

Barrel has some JB Weld on the front and a small chip on a top
fin near #1 cylinder.

The liners alone to duplicate this are over $400 USD

Liners in great/straight condition and measure :

#1 - 2.9930" 
#2 - 2.9925"
#3 - 2.9930"
#4 - 2.9925"

Just need a light hone to freshen up.

Would be good for street use if painted black (only reason I did not use it was cosmetics)
Would be good for drag use if O ringed.
Block has not been decked.
Pistons required are 76 mm.



$80 USD, shipping extra (part is in Ontario, Canada)
 

Just to boost your post, 

This year I over $1000 for the labor to create this block for those that are wondering. Assuming you have a cylinder block  and buy the liners at $80 a pc and then have to have it bored 2x, once to fit the liners to the block and once again to open up the liners for the 1197 pistons. - This is a screaming deal  

That's not only a smoking deal but on fire. I sent a gorilla block 1428cc to Eric at Hooper in Florida and spent over 1400.00 to duplicate the liners. Too bad Injected You live in Canada, politics has separated us as a former union of enthusiasts when it comes to freely swapping crap amongst ourselves. Too bad they used an early cylinder, could of given them a later one, less valuable. What's the JB Weld all about? Did they break thru the casting when boring? I see the front tensioner shaft saddle is goofy, like something let loose. This should be easily repaired though.     

I priced the liners on Ebay the day I listed it at $99/ea without shipping or tax. That groove may have been a idler rubber exploding.

This was off a street bike when I bought it (see pic) in with a package buy of a big block (1327cc) in 2017.

 

I was fully intending to use it and the MTC pistons on a street bike build. Once I saw the epoxy that ruined my plans as I don't like to paint anything black. I had to redo the block with a 1015 barrel and fresh liners so I know exactly how much work goes into getting it done.

My boring guy said that about 30% of the time 903 barrels will break out "slightly" to show the liners on a 1200 build. He mentioned its usually on the front sides of the casting and on the two inner liners. He took a look at it and was prepared to hone it for me if I was going to paint it. He was not concerned about it and took the time to measure it confirming the sizing and straightness.

I decided to redo it all because of cosmetic reasons only, my decision. I did try to move it on locally but there are increasing less people interested in these parts.

This is the "as found" condition, its not cleaned up in any way. I don't see any evidence of leaking around the epoxy.

I am pretty sure if someone took the time to clean it and apply a smoother layer of epoxy it could present better once painted properly. It could also be left as is and used for a entry level drag racing build.

Its a shame that it has been collecting dust, and too good to throw in the trash heap.
 

Price lowered to $45 USD with shipping extra

Mr. E wrote:

Just to boost your post, 

This year I over $1000 for the labor to create this block for those that are wondering. Assuming you have a cylinder block  and buy the liners at $80 a pc and then have to have it bored 2x, once to fit the liners to the block and once again to open up the liners for the 1197 pistons. - This is a screaming deal  






 

Sorry to ask this but are you the guy who was building a bike for salt flats racing?

If so I could send you this barrel as a spare if you pay for the shipping. For a extra $20 I can get it a fresh lick hone on a Sunnen machine.

I also have some air shifter stuff and a billet timing rotor for sale - take a look, will let go for reasonable $$

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If you really want a race engine I have a 16:1 compression 1327cc engine available. I am also going to have a complete 43mm alcohol injection system with magneto for sale with a fuel tank that would really work well with that engine as a salt flats combo. All the tuning gear goes with it (buzz box, extra nozzles/pills)

Gets you into a alcohol class for cheap, but I see your across the country on the West coast.

 


 

Ill take you up on those cylinders, and I will mull over that motor. I couldn't swing it before boneville this season, but thats only a few months more...

Mr. E wrote:

Ill take you up on those cylinders, and I will mull over that motor. I couldn't swing it before boneville this season, but thats only a few months more...

PM sent

No longer shipping to the USA.