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  #21  
Unread 10-18-2013, 01:44 PM
epapolice's Avatar
epapolice epapolice is offline
Unloading the TZ from the trailer
 
Join Date: Oct 2013
Location: Australia
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Cheers Bud
Yea the volume is a bit much alright and like you said my 4DP has 8cc or so from memory. I need to check the set up when the motor is back together.
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  #22  
Unread 10-18-2013, 11:47 PM
Ronan Schulz Ronan Schulz is offline
First race on the new TZ (back of the grid)
 
Join Date: Sep 2008
Location: Pretoria, South Africa.
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Quote:
Originally Posted by hyside View Post
Ok as we know down here in Aus the long awaited P6 historic racing class is with us at last
This takes in bikes from 1983-1990 I am trying to get a show of hands from people who are planning to drag theres out of the shed or are dreaming about it but think its to hard and I can't get the bits!
This era of 250GP bikes was awsome with some major steps in TZ and dare I say RS development.
So come on people lets see who you are so we can get together and give it a push
As an outsider, it just seems unfair that the class runs from 1983 on. It includes the TZ250K and L's. A good L will run with an N, but has no chance with the later models. Don't you guys think the K and L's should belong with wherever the H and J' s run?
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  #23  
Unread 10-19-2013, 03:48 PM
170plus 170plus is offline
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The ad truth is that there will ALWAYS be a bike or two that are from the beginning of the period that can't run with those from the end of class period. Those bikes, being at the leading edge of development, were probably the reason the cutoff date was set for the end of the previous period!

Not sure where the H/J's can run, as the class was 1980 cutoff (for that reason), but seem to recall being extended to 82?
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  #24  
Unread 10-20-2013, 07:17 AM
Jools Jools is offline
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Yes but is that excluding spark plug ?
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  #25  
Unread 10-20-2013, 01:41 PM
170plus 170plus is offline
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Yes, spark pluigs and main jets must be period items..
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  #26  
Unread 10-21-2013, 09:02 AM
epapolice's Avatar
epapolice epapolice is offline
Unloading the TZ from the trailer
 
Join Date: Oct 2013
Location: Australia
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The volume is 9.5cc to the top of the plug hole on the 4DP head.
The 2 sets of heads are different on the 250 U. The one fitted to the bike is flat but the spare set has a machined step where the inside o ring would mate to the barrel. This would mean the outside o ring would never seal as there is a gap.
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  #27  
Unread 04-06-2014, 04:33 PM
rodprice rodprice is offline
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Join Date: Feb 2007
Location: Arrowtown, New Zealand
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There has been a TZ250A radiator advertised on Ebay out of Taiwan for not much money, looks like nice work
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