- Posts: 1017
- Thank you received: 83
big bore kits
- Powerstroke_fan
- Topic Author
- Offline
- User
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Please Log in or Create an account to join the conversation.
- 4TheKZ1000
- Visitor
Please Log in or Create an account to join the conversation.
- Powerstroke_fan
- Topic Author
- Offline
- User
- Posts: 1017
- Thank you received: 83
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Please Log in or Create an account to join the conversation.
- Street Fighter LTD
- Offline
- Moderator
- TURBO, Its Better to be Blown than Injected
- Posts: 4939
- Thank you received: 2065
I do believe you need to machine the upper crankcase for that big a bore. You buying a real big block or boring original block for bigger sleeves ?
Heat will be your enemy even with cooler.
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
Please Log in or Create an account to join the conversation.
- 4TheKZ1000
- Visitor
Please Log in or Create an account to join the conversation.
- Powerstroke_fan
- Topic Author
- Offline
- User
- Posts: 1017
- Thank you received: 83
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Please Log in or Create an account to join the conversation.
- Powerstroke_fan
- Topic Author
- Offline
- User
- Posts: 1017
- Thank you received: 83
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Please Log in or Create an account to join the conversation.
- Street Fighter LTD
- Offline
- Moderator
- TURBO, Its Better to be Blown than Injected
- Posts: 4939
- Thank you received: 2065
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
Please Log in or Create an account to join the conversation.
- DoubleDub
- Visitor
Powerstroke_fan wrote: I was thinking on using stock block but not sure whats best.
Everyone has their own opinion.
(Sorry - I was wrong here - needs sleeves) [Some guys say 1197 is fine]
Worst case, you might need to have the stock block sleeved. You likely won't *need* to weld the crank unless you are drag racing or somehow manage to get much more grip out of the rear tire. An oil cooler wouldn't hurt, but I'd get one with a thermostat if you can. Depends on how you ride as to whether you need it or not. Undercut gears aren't necessary, but nice to have if you have the spare cash.
Please Log in or Create an account to join the conversation.
- racer54
- Offline
- Sustaining Member
- Posts: 1903
- Thank you received: 114
1980 LTD (changed over the years), 1979 LTD (being rebuilt), 1977 KZ turbo and various KZ's in various states of build. KLX110
Please Log in or Create an account to join the conversation.
- wireman
- Offline
- User
- The most interesting prick in the world
- Posts: 4761
- Thank you received: 299
The problem with running the 13:1 pistons even with the j-style head is you still have the giant hump on top of your pistons for the flame to climb across.
Unless youve head some work done on that j head I personally would just have a regular kz head done up by the master Larry himself with a 10.25:1 1197 kit youll have more power than your stock chassis will want to handle! :laugh:
As far as blocks i prefer the stock blocks with bigger sleeves on the street because they run so much cooler versus the big block.
Have everything in the bottem end checked for wear and tear and have top case half bored for the bigger sleeves.
As far as the falicon stuff yeah its nice,I ran 1 of their big pinned 900 cranks with knife rods in my 1327 but even then it was overkill in my book anyway.
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Please Log in or Create an account to join the conversation.
- mark1122
- Offline
- User
- Keep twisting it
- Posts: 5359
- Thank you received: 109
do everything u can to the bottom end first. weld crank, back cut trany, new cam chain, bore block. then keep running the 1075 untill u have the cash to do the top end.
as for the head.
send the mk11 head to Larry for work and use it with 10.25:1 pistons.
or
Use the J head (its cheaper to do the j head vs KZ, because it already has bigger valves, and port) the savings in the head could be put towards custom J&E pistons.
research the cost to do each head and the piston cost,to help u deside.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
Please Log in or Create an account to join the conversation.