thoughts on this 1075

I can pick up a pretty fresh pro built 1000 motor with wisco 1075 kit 10 1/2 to one's.Nice Ported head. Not sure of the cams but owner just said 3x cams.MarkII trans. shimmed.. Bolt in minus carbs. I have a set of 29's and yosh pipe all to be fitted in stock 75 900 frame with stock arm and 3 1/2 inch rear wheel..will be set up with 530 chain conversiion with 18x45 rear ratio
no price yet but is this a good street motor or two much with stock frame/stock swing arm
cheers

The 1075 is a good engine still using the 903 sleeve size even though it's Wiseco. The next bore size starts around 1100 just FYI if you ever intend putting your bike on the track.
You will not notice a huge difference in HP's and very little to do to re-jet your carbs.
Regardless of HP the 75 definitely has a tendancy to speed wobble between 65-85 MPH so a small mod to the frame is reccommended if you can find someone who still does framework on old zeds.
Not sure about the cams, my Z1 has 'Z2' cams and my ELR is running 'Z4' cams. The 'Z2' cams are considered 'hot street' and the 'Z4' are nuts requiring tons of head work. The Z2 were almost but not quite drop in. I expect the Z3 with higher lift would require more head work and you would need to inquire as to the reputation of the 'professional' builder as to how well it was built and documented.
Check around when it comes to changing sprockets out on the old 75. I tried every combination I could get years ago but ended up with stock sizes in the end for the track. So my red line is still 135mph in fifth gear.

I think it boils down to what you have in mind for your bike. If you intend to keep it street then if everything is set up well you'll get a lot of milage on a fresh motor.

Stock engine is too much for the frame:laugh:
But its quite easy to make a big difference.
Taper bearings on the head stock, maybe some better front springs. Get the frame braced under the tank, across the front down tubes, and across the back tubes near the swing arm. Fit a box section swing arm on taper rollers or at least put a needle roller kit on the stock arm and put some better shocks on.
If its still got one disc on the front fit another!

Andrews labels their cam 1x-2x-3x and so on. The 2x are a great cam for the 1075 with no head work. Since you head is ported and you will have 29's on, it should be a screamer. Like stever said brace up the frame a little and you will be fine. Dual front brakes will help and high quality rear shoes will help. Replace all the bearings (wheel, tripples, swingarm) high quality tires and your good to go.

Andrews cam specs for 900/1000

3X: Lift .418 Duration 282 degrees

8X (APE 410) Lift 410 Duration 266

5X (APE 435) Lift 435 Duration 266

I don't think I'd call cams with 282 degrees duration good street cams in a 1075.


But what do I know, I'm a 750 guy


But I sure wish I could find someone with an old Andrews catalog so they could give me some info on the 750 Andrews cams I have

Info for 900/1000 Andrews cams:

www.andrewsproducts.com/Subpages/technical_index.htm



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CoMIYC wrote:

The 1075 is a good engine still using the 903 sleeve size even though it's Wiseco. The next bore size starts around 1100 just FYI if you ever intend putting your bike on the track.

Sorry 1075will "not" work in 903 sleeves but will in a stock 1000 block 1015 is the most you can go in a stock 900 block

Had a set of 3X cams in my street 1075,the shim under the buckets are a PIA for a street bike but it was alot of fun...especially stoplight to stoplight with the flipflop sportbike squids.Currently residing in my buddy's 1428.

you will be happy with that motor and if it was built right you should get pretty good life out of it those cams might be a bit hot for a street engine you can always throw in a set of stock cams until you get a milder set of cams to replace them.

that old 70s yosh pipe is definately gonna hold you back,id be willing to take it off your hands though just because i like ya !:laugh:

I notice that you like a lot of guys around here!!! Is it their parts you like or what? :laugh: :ohmy: LOL

damn kids!:laugh:

Steell...PM sent. Anyone need any info on Andrew cams, I have an old Pogue Racing catalog and would tell you any info it has about those cams.