Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Gpz Drag bike Project for 2018

Work in Progress

Moderators: chrisu, paul doran, Taffus, KeithZ1R

Message
Author
User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#16 PostAuthor: KWACKERZ1 » Thu Oct 12, 2017 6:03 pm

Good spot Pigford yes they do protrude. Not sure why but they do !

The other interesting thing is the head has been skimmed offset. i.e on a slope if you look at the pictures below you can see how far the head has been skimmed on the exhaust side the skimming breaks through into threads of the exhaust studs.
On the inlet side its been left higher.
Apparently this mod increases the squish to aid exhaust gas extraction and increase compression whilst retaining the valve to piston clearance on the inlet side.

Did some further work on the bike this is what it looks like now.
Attachments
FE7B43A3-DC40-438C-BA47-9950B524E74F.jpeg

Swirl
Custard Cream
Custard Cream
Posts: 743
Joined: 9th Feb 2017
Location: Ellesmere Port Cheshire

Re: Gpz Drag bike Project for 2018

#17 PostAuthor: Swirl » Fri Oct 13, 2017 9:25 am

Loving it, what is your first planned outing, for the fan club to spectate

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#18 PostAuthor: KWACKERZ1 » Fri Oct 13, 2017 1:22 pm

Give me a chance :roll:

Got to get the thing built first, but it will be a rung what ya brung.

probably at santa pod in the spring.

Swirl
Custard Cream
Custard Cream
Posts: 743
Joined: 9th Feb 2017
Location: Ellesmere Port Cheshire

Re: Gpz Drag bike Project for 2018

#19 PostAuthor: Swirl » Fri Oct 13, 2017 6:44 pm

You said 2018, soo you got about 12 weeks :lol: :lol: :lol:

Julian_Boolean
Custard Cream
Custard Cream
Posts: 804
Joined: 20th Oct 2016
Location: Ipswich

Re: Gpz Drag bike Project for 2018

#20 PostAuthor: Julian_Boolean » Fri Oct 13, 2017 8:02 pm

KWACKERZ1 wrote:Give me a chance :roll:

Got to get the thing built first, but it will be a rung what ya brung.

probably at santa pod in the spring.


See you there
An expanding collection of parts pretending to be a Z1100R and a Yamaha FZ750

User avatar
big green bus
Custard Cream
Custard Cream
Posts: 794
Joined: 2nd Apr 2006
Location: durham

Re: Gpz Drag bike Project for 2018

#21 PostAuthor: big green bus » Mon Oct 16, 2017 6:13 pm

Got a set of 465 Webb drag race cams £150 + post ?

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#22 PostAuthor: KWACKERZ1 » Mon Oct 16, 2017 9:49 pm

Thanks mate but I'll stick with the 429's that are in it,

I would consider some 38/40 mm FCR's if someone has some as they may be an upgrade from the lectron 38's.

Coose
Custard Cream
Custard Cream
Posts: 703
Joined: 20th Apr 2015
Location: North Yorks

Re: Gpz Drag bike Project for 2018

#23 PostAuthor: Coose » Tue Oct 17, 2017 3:16 pm

Mmmmm..... If only I could justify prying the Lectrons out of your hands.... :wink:

It looks like a fun project, keep it coming! :)

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#24 PostAuthor: KWACKERZ1 » Tue Oct 17, 2017 8:53 pm

Ian, Thanks, I'll bear you in mind if I get something else lined up carb wise.

Just to make you really sick, the bike also came with an 18" 5.0 rear Dymag, :D :D :D
Bob with the Orange Gpz is trying to prise it from me. :)

Coose
Custard Cream
Custard Cream
Posts: 703
Joined: 20th Apr 2015
Location: North Yorks

Re: Gpz Drag bike Project for 2018

#25 PostAuthor: Coose » Wed Oct 18, 2017 7:20 pm

Crikey, a proper bargain project! :)

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#26 PostAuthor: KWACKERZ1 » Sun Nov 19, 2017 2:34 pm

Done some playing with the bike. Ordered a couple ofally tanks to mount as the fuel supply.
Attachments
EEC25B02-6E38-49F8-BDFC-B2ADB40FFCD2.jpeg

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#27 PostAuthor: KWACKERZ1 » Sun Nov 19, 2017 2:40 pm

Also started re building the engine. Measured all bores and rings andstarted putting the motor back together . With some help from my lad!
Attachments
2BDA34A9-B769-4416-B4F8-AB1C07DA2F4A.jpeg

Coose
Custard Cream
Custard Cream
Posts: 703
Joined: 20th Apr 2015
Location: North Yorks

Re: Gpz Drag bike Project for 2018

#28 PostAuthor: Coose » Mon Nov 20, 2017 7:08 pm

Start 'em young! :D

User avatar
Zomerset Zed
100Club
100Club
Posts: 239
Joined: 30th May 2014
Location: Somerset

Re: Gpz Drag bike Project for 2018

#29 PostAuthor: Zomerset Zed » Sat Dec 02, 2017 4:36 pm

Looks like a lot of fun ahead :P

My P&M has a similar head mod re. the angled head skim. Quite common on this vintage of race engine.

User avatar
KWACKERZ1
Hardcore
Hardcore
Posts: 1963
Joined: 1st Sep 2007
Location: Leicestershire

Re: Gpz Drag bike Project for 2018

#30 PostAuthor: KWACKERZ1 » Tue Dec 05, 2017 9:21 am

Disaster struck the yesterday,
On Sunday I moved the engine off my hydraulic bench onto the work bench and thought nothing of it.

Yesterday I went in the garage to find the engine upside down on the floor. :shock:

We had a bar through the rear monut and it looks like this hit the deck first and took the brunt of the impact its ripped out the rear sprocket side engine mount.:ooops

IMG_1861 (2).JPG


So what do I do now ? Weld it up, could this be done as a complete lump ? Strip it and source replacement cases ?

Just when I thought everything was going so well!!
:no :no :no

Now then where was that advert for engine stands that I looked at twice and thought naa never needed one before why spend the £65. :oops: Oh and anyone know where I can get bolts for Shergar's stable!


Return to “Projects”

Who is online

Users browsing this forum: No registered users and 34 guests