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Author Topic: Beta Spider 2000 engine rebuild/refurb  (Read 15738 times)
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mangocrazy
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« Reply #120 on: June 27, 2021, 12:44:54 PM »

Hi Eric,

Many thanks for that, much appreciated. There are no less than 3 genuine top-mounted Weber linkages, one with a single cable, two with twin cables; LP1000, LP2000 and LP2500 respectively. As far as I can make out the LP1000 and LP2000 cables enter from the LH side of the car when viewed from the front, and the LP2500 cables enter from the RH side of the car (which may be better suited to a LHD car). Having said that, the quality of the castings and machining on the LP2500 linkage is superb. Here are equivalent photos for the LP1000, LP2000 and LP2500. Which one did you use, Eric? (Assuming it was actually one of these).

Graham



* Weber_LP1000_linkage_001.JPG (100.84 KB, 1154x821 - viewed 82 times.)

* Weber_LP2000_linkage_001.JPG (104.12 KB, 1165x951 - viewed 80 times.)

* Weber_LP2500_linkage_002.JPG (111.78 KB, 1146x825 - viewed 80 times.)
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1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
mangocrazy
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« Reply #121 on: July 02, 2021, 05:06:16 PM »

More small steps today. I hunted down some manifold studs of the required size from WDS Components (https://www.wdscomponents.com/en-gb/metric-steel-studs-wds-405/c-424/p-394/v-4754, in M8 x 1.25 and an overall length of 50mm. I fitted these earlier and effectively made them a permanent fixture with green (strong) Loctite. Prior to that I'd established that there was sufficient clearance when the carbs were mounted using the Misab plates between the end of the stud and the carb body. There was - about 2 mm. It was a real juggling act in terms of getting the studs long enough to allow fitment of the two cup washers, rubber sleeve and nyloc nut and not so long that the end of the stud fouled the carb body.

Prior to that I'd done the final fit of the GC manifold to the head using wave washers and Aerotight nuts, and tightening the nuts up as much and as evenly as I could manage. Final tightening will be at the next visit, as I need to dig out my stubby ring/OE spanners and also grind a sacrificial ring spanner sufficiently to allow me to get the spanner head over the nut (clearance to manifold is VERY tight). My collection of 'special tools' is expanding...
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1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
WestonE
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« Reply #122 on: July 02, 2021, 05:37:26 PM »

Hi Graham

The second one with one cable, but I should have used the first one with an adapted cable.

Eric 
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mangocrazy
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« Reply #123 on: July 02, 2021, 08:21:18 PM »

Thanks Eric, I'd pretty much decided on the first one. Two operating cables is just another opportunity for something to go out of balance. The only way I've seen it used successfully is on many bike throttle cables where there is a 'push me pull you' opening and closing cable.

Thanks for the confirmation.
« Last Edit: July 02, 2021, 08:26:39 PM by mangocrazy » Logged

1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
mangocrazy
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******
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United Kingdom United Kingdom

Posts: 1020


« Reply #124 on: July 13, 2021, 09:26:33 PM »

The LP1000 linkage has been purchased and delivered, but is still currently sitting in its box. My focus has currently turned to the dipstick tube, as that is in the area I'm working on, and needs resolution before I go much further. I was hopeful that the OE dipstick tube could be made to fit between the inlet manifold ports for cylinders 1 and 2, but after removing the locating bracket it appears that it still doesn't, and a new dipstick tube will need to be fabricated. Bugger.

So some 10mm mild steel tube has been ordered and my Rothenberger tube bending tool has been retrieved from the depths of my plumbing tool kit. This is all going to be a case of bend the tube - trial fit - bend the tube some more - trial fit - get it something like - fabricate a bracket - trial fit - attach bracket to tube temporarily - trial fit etc. etc
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1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
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