Welcome, Guest
Username: Password: Remember me

TOPIC:

Drag strip trip. 26 Sep 2016 22:53 #743678

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Looks like Revivalcycle's here in Austin that puts on the Handbuilt show is going to have a race at little River
for the vintage/cafe bike's. Think I'll show up with my little 650 and see if I can hurt a few feeling's. :evil: :evil:
revivalcycles.com/blogs/the-twist-off-media
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 25 Oct 2016 15:39 #746200

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Well what started as a simple valve adjustment and compression test turned in to the top end coming off.
Intake's where .004, .005, .004, .004.
Exh. where .003, 003, .003, .007
Did the comp. check and cyl. four was 30 psi lower then the other's so pulled it apart
and found #4 intake valve not seating right so I'll relap all the valve's and see what the seat's look like.
Cylinder's and piston's look like they have never been ran other then some carbon on the domes.


1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 25 Oct 2016 15:53 #746203

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 22347
  • Thank you received: 2598
Bummer. :( A little oil getting past the rings?
Steve

Please Log in or Create an account to join the conversation.

Drag strip trip. 26 Oct 2016 06:37 #746248

  • bluej58
  • bluej58's Avatar
  • Offline
  • Sustaining Member
  • The chrome don't get you home
  • Posts: 2484
  • Thank you received: 511

zukdave wrote: Looks like Revivalcycle's here in Austin that puts on the Handbuilt show is going to have a race at little River
for the vintage/cafe bike's. Think I'll show up with my little 650 and see if I can hurt a few feeling's. :evil: :evil:
revivalcycles.com/blogs/the-twist-off-media



Good Luck
78 KZ1000 A2A

Please Log in or Create an account to join the conversation.

Drag strip trip. 26 Oct 2016 17:40 #746286

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Pulled the leaking valve and did a quick lap and it looks like it's bent but there's no sign's of it hitting anything.
Piston dome does not have any kind of mark on it and the valve has no mark's.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 26 Oct 2016 18:14 #746288

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 22347
  • Thank you received: 2598
Warped from overheating?
Steve

Please Log in or Create an account to join the conversation.

Drag strip trip. 27 Oct 2016 15:51 #746318

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Steve I don't think so maybe if it was an exh. valve the intake valve's run a lot cooler.

Anyways dug out the spare head stole a valve out of it to use lapped it in the head I'm running
and got a perfect seal now to lap the rest and order a head and base gasket.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 27 Oct 2016 15:56 #746319

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 22347
  • Thank you received: 2598
Yeah, you're running relatively mild cams, yes? Good to have spares. B) I still have my old valves just in case. The Doremi vaves are lighter so I didn't know what to expect from them. So far so good. :whistle:
Steve

Please Log in or Create an account to join the conversation.

Drag strip trip. 28 Oct 2016 18:16 #746410

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Steve the cams are stock ZX750A1 better known as the 83 GPz750 their the best factory cams for the small four's.

Head's all done ready to go, did a light hone on the cylinder's, Gasket's get here I'll but it back together
next week.
Gonna do a test fit and see if I can leave the base gasket out to bump the comp. a bit.
If the piston don't stick out the cylinder I'm good right
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 28 Oct 2016 18:39 #746415

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 22347
  • Thank you received: 2598
I thought you had a mild overbore or something being you're shifting so high. Without the base gasket you gain 2mm?
Maybe I shoulda done that. :unsure:
Steve

Please Log in or Create an account to join the conversation.

Drag strip trip. 02 Nov 2016 17:11 #747013

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Man I hate waiting on parts gasket's on their way and the rest is ready to go back together.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Drag strip trip. 06 Nov 2016 06:05 #747403

  • zukdave
  • zukdave's Avatar Topic Author
  • Offline
  • User
  • Posts: 1685
  • Thank you received: 229
Cylinder blocks on so this morning going to see if I can I can get the valves adjusted and the head on before the rain starts
this afternoon.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum