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Classic Bike Trackdays

XR11/73

 
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gagster55
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Joined: 04 Dec 2006
Posts: 219
Location: West Yorkshire

PostPosted: Sun Dec 13, 2015 4:15 pm    Post subject: XR11/73 Reply with quote

squeezing a quart into a pint pot.........



or a GT750 motor into a GSX-R400 GK73A frame.

They said it couldn't be done........... Wink
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Top-shaggy
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Joined: 05 Mar 2011
Posts: 1757
Location: Derbyshire

PostPosted: Sun Dec 13, 2015 5:29 pm    Post subject: Reply with quote

Monster !!

I've seen a fantastic KH750 engine in a ZXR400 frame so should be ace, of course you need radiator too so tight squeeze indeed Smile
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gagster55
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Joined: 04 Dec 2006
Posts: 219
Location: West Yorkshire

PostPosted: Sun Dec 13, 2015 6:26 pm    Post subject: Reply with quote

a 750 Kawasaki triple is a lot shorter than a GT750 motor - honest !
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charlieuk



Joined: 19 Apr 2009
Posts: 4

PostPosted: Tue Dec 15, 2015 8:25 pm    Post subject: Reply with quote

Top-shaggy wrote:
Monster !!

I've seen a fantastic KH750 engine in a ZXR400 frame so should be ace, of course you need radiator too so tight squeeze indeed Smile


this one? Have to admit I love it, so will be interested to see how this one turns out

http://www.zweitakte.de/projekte/ralf_zxr/zxr_h2.htm
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gagster55
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Joined: 04 Dec 2006
Posts: 219
Location: West Yorkshire

PostPosted: Wed Dec 16, 2015 12:47 pm    Post subject: Reply with quote

not seen that one before - thanks for the link Very Happy

I was toying with the idea of putting my spare GT750 motor into a H2 Kawasaki frame and making a proper triple (ooerrr) but having viewed a suitable donor frame on Monday, it's never going to happen.
So I'm on the lookout for another recipient............ Wink
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gagster55
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Joined: 04 Dec 2006
Posts: 219
Location: West Yorkshire

PostPosted: Wed Dec 16, 2015 12:53 pm    Post subject: Reply with quote

the top radiator.............



another fits across the frame, under the headstock.
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nick69
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Joined: 18 Jan 2007
Posts: 108
Location: Pontefract West Yorks

PostPosted: Fri Dec 18, 2015 2:46 am    Post subject: Reply with quote

Excellent mate,looks like a neat solution
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eyrey1



Joined: 29 Nov 2012
Posts: 82
Location: WAKEFIELD

PostPosted: Fri Dec 18, 2015 3:24 am    Post subject: Reply with quote

my yz125 had a rad there when i was a lad i think it was 82 or 81 model if i remember right
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gagster55
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Joined: 04 Dec 2006
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Location: West Yorkshire

PostPosted: Sun Feb 14, 2016 5:08 pm    Post subject: Reply with quote

making the front engine mounting............

firstly, the cylinder head plate. I Araldited an oversized piece of aluminium sheet to a spare cylinder head so it wouldn't move around whilst marking it out and drilling it........



the head plate mounting bolts are 8mm, whereas the holes for the cylinder head mounting sleeve bolts are 13mm. To get the holes as accurate as possible, I cut an old sleeve bolt down........



and used it to centre the 8.5mm drill bit thus...........



so that after a visit to the pillar drill...........



and a little bit of shaping (to clear the thermostat housing).....



I ended up with this...........



some welding next..............
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