Upgrade to Bigbore Pistons

  • gordone
  • Topic Author
  • Offline
  • Sustaining Member
More
17 Dec 2017 10:30 - 17 Dec 2017 10:41 #776204 by gordone
Replied by gordone on topic Upgrade to Bigbore Pistons
Thank you all for feedback.
Looking forward to test these out :)

1.
Is there something special I need to inform the engine workshop with?
Clearances they shall make for the pistons?

www.wiseco.com/ProductDetail.aspx?ItemID...Year=1981&AppID=6904

2.
What is the best way monitor for over heating?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Attachments:
Last edit: 17 Dec 2017 10:41 by gordone.

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

More
17 Dec 2017 15:27 #776226 by KZB2 650
Replied by KZB2 650 on topic Upgrade to Bigbore Pistons
90% sure when APE Race parts did my pistons they were done at .002 clearance....... I told them I wanted them done at the min clearance they would recommend......... but since I'm not 100% sure or they might go a little different on the 810 kit I'd ask them.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.

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

More
17 Dec 2017 15:39 #776228 by zukdave
Replied by zukdave on topic Upgrade to Bigbore Pistons
The paper work with the Wiseco kit will have info on piston clearance and ring end gap.
If the shop doing the work is worth a shit they'll know how to do it.
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.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
17 Dec 2017 17:08 #776250 by SWest
Replied by SWest on topic Upgrade to Bigbore Pistons
The pistons should come with this.
Steve

Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
Attachments:

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

  • gordone
  • Topic Author
  • Offline
  • Sustaining Member
More
28 Dec 2017 06:50 #776680 by gordone
Replied by gordone on topic Upgrade to Bigbore Pistons
I picked up the pistons today, will deliver them to workshop next week.

I found papers inside each piston explain the clearness for the piston rings, red paper as SWest gave me below.

1. What about the clearness between the liners / cylinder walls and the piston, should that be 0,051mm, please see attached photo?
2. Is there more I need to inform the workshop of, is it a special hone I shall use or something?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Attachments:

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

More
28 Dec 2017 07:09 #776683 by KZB2 650
Replied by KZB2 650 on topic Upgrade to Bigbore Pistons
Ok looks like my memory of .002 was right........ (anyone else like to confirm this) ........one thing is when you get the block back wash it with soap and water then scrub the walls down with wd40 and clean paper towels till they come out spot less........ had to go over mine maybe 3 or 4 times till I got all the honing grit off.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
The following user(s) said Thank You: missionkz, gordone

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

More
28 Dec 2017 16:24 #776705 by zukdave
Replied by zukdave on topic Upgrade to Bigbore Pistons
Take the pistons to the shop doing the bore work and let them do their job stop over complicating things
looking for the perfect answer.

I've done five over bored motors this past year and not one time did I have to tell the mechine shop how to do thier job.
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.
The following user(s) said Thank You: SWest

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

  • gordone
  • Topic Author
  • Offline
  • Sustaining Member
More
29 Dec 2017 00:32 #776717 by gordone
Replied by gordone on topic Upgrade to Bigbore Pistons
Hehe thank you for your replays :)

I’m a person who want to understand / learn, so I wouldent “micro controlled” the work shop,. Always nice to understand what they do, they normal work with cars and tractor pulling engines.

I will deliver the piston next week, looking forward to get the piston and head back :)
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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

  • gordone
  • Topic Author
  • Offline
  • Sustaining Member
More
03 Jan 2018 08:08 #776854 by gordone
Replied by gordone on topic Upgrade to Bigbore Pistons
I need to double check with you all, I can use a OEM head gasket with the 810CC bigbore pistons?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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

More
03 Jan 2018 08:58 #776857 by KZB2 650
Replied by KZB2 650 on topic Upgrade to Bigbore Pistons
Did the Wiseco piston kit come with a gasket from them ...... mine did and I've have heard good things about them and its working well after close to 4 years and a couple thousand miles. The oem gasket is top notch too I'm just not sure if it fits the bigger bore and will let others answer that.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.

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

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
03 Jan 2018 09:20 #776859 by SWest
Replied by SWest on topic Upgrade to Bigbore Pistons
I used a one piece Cometic 903 head gasket on my 1015. I thought it would cause pre ignition but had no problems with the smaller size I bought a 70mm fiber one this last time and had to use it twice. Still works great with Copper spray this last time. Next time I'll go with the one piece copper one with the copper spray.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

  • gordone
  • Topic Author
  • Offline
  • Sustaining Member
More
03 Jan 2018 11:52 - 03 Jan 2018 12:00 #776871 by gordone
Replied by gordone on topic Upgrade to Bigbore Pistons
I was only purchase the bigbore kit with pistons....

I have a original OEM gasket, so I can use it for 810cc also, then?

Or will these be a bad plan.. and it will not work for long time?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 03 Jan 2018 12:00 by gordone.

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

Powered by Kunena Forum

Forum Links