New ‘72 Laverda 750 SF GT owner

TeddyG said:
Point taken, but since the snorkels aren't air tight, how good can the air box be compared to pod filters? I do have a replacement OEM type filter that I might try afterwards to see if there's any performance difference. Yes, these are lovely old bikes but there's always room for improvement to them.
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As you said in previous post, you have your filters attached to the snorkels, which give the longer inlet length as with the airbox. Not all bikes like their inlet shortened by removing the airbox rubbers and sticking pods directly to the carburettor. SF seem to like the longer inlet to the airbox, or a velocity stack. Though the original rubbers are not airtight, they still allow good filtering, easily seen by difference in slide wear. I have cut out the back of my airbox and have big foam unifilters pushed into the rubbers. Fitting pods to the carbs limits the size of the filter.
 
TeddyG said:
Point taken, but since the snorkels aren't air tight, how good can the air box be compared to pod filters? I do have a replacement OEM type filter that I might try afterwards to see if there's any performance difference. Yes, these are lovely old bikes but there's always room for improvement to them.
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Throw away any notion of performance and get it running properly and looking good.
Pod filters are likely a lot more restrictive than the original setup.
Paul
 
I am doing up a 750 to ride and am gaining a knowledge of spare parts availability and cost. I agree with Paul and others but either way hang on to the original bits e.g. air boxes annd rubbers are an arm and leg.
 
Forgive me, I’m new to this bike. What am I looking at here? Whatever it is, the previous owner had tape wrapped around it. I don’t have a green book yet, so I’m trying to figure it out. Thanks in advance.
 

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The key that I was given for this bike does not work. I also bought one on eBay (the attached photo) that said it was a Bosch Laverda 750 key. That didn’t work either. What do I do in this situation? Thanks.
 

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JPLav750 said:
The key that I was given for this bike does not work. I also bought one on eBay (the attached photo) that said it was a Bosch Laverda 750 key. That didn’t work either. What do I do in this situation? Thanks.
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A 3" nail might work for ignition on, any suitable diameter rod to push connector down. "Key" that you is a generic Bosch BWW from late 60's/70's all the same.

Bosch ignition key

Hi I am looking for a Bosch ignition key the one with a black knob that pushes in and turns, it is for one of my early triples. Those keys must be all the same as the one key I have fits into the other switch that requires the key. Thanks, M.
laverdaforum.com laverdaforum.com
 
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OneThinBloke said:
A 3" nail might work for ignition on, any suitable diameter rod to push connector down. "Key" that you is a generic Bosch BWW from late 60's/70's all the same.

Bosch ignition key

Hi I am looking for a Bosch ignition key the one with a black knob that pushes in and turns, it is for one of my early triples. Those keys must be all the same as the one key I have fits into the other switch that requires the key. Thanks, M.
laverdaforum.com laverdaforum.com
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These seem to vary in length, if the switch mechanism is original and not messed with then the key you need looks more like this
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and you should be able to find one as sold for BMW motorcycles from the /5 era through eBay or other channels. The longer one you have may fit a later model Laverda 750.
 
JPLav750 said:
Thanks for the input. Any info on where to find the green book. I do have the original manual that came with the bike but I’m assuming the green book is a shop manual?
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The owner's manual that you show on the seat of your bike will clearly show the differences and similarities between the SF and GT models, what you have is what was sold as the next generation GT model which has the SF chassis with a GT motor and commonly known as the GTF.

If numbers match then it's the original motor and if you look on the lower left side at the rear lower mounting bolt location then there should be a stamp in the engine case showing the motor type.

Did you find a green book? It's the best option for a service manual and you can get a new copy here:
Tim Parker contact
 
Great reading as I have obtained a 1971 SF750 GT. Sold new here in New Zealand and now with just 21,000kms .It had been overhauled by a very good classic bike restorer before I got it .It has the DAM clutch easier activation alteration which I like .And one shock absorber was soft, so it no longer has the original shocks.Yesterday I went for a day ride and by the time I had ridden over the Takaka hill and back ( 25kms & 365 turns each way) I had began getting used to using the left foot brake at last.When I got home I had a sore jaw from the grin. I have a few old Guzzi's and a 2019 V85 TT Guzzi and Suzuki DR650 for going bush.But the old Guzzis are getting bored now sitting in the shed.The GT is such a lovely bike to ride once everything is adjusted correctly, and it is so easy to maintain.Enjoy your new project .By the time you have done what ever is needed you will be well versed on keeping it in fine form.
 

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Alan McL said:
Great reading as I have obtained a 1971 SF750 GT. Sold new here in New Zealand and now with just 21,000kms .It had been overhauled by a very good classic bike restorer before I got it .It has the DAM clutch easier activation alteration which I like .And one shock absorber was soft, so it no longer has the original shocks.Yesterday I went for a day ride and by the time I had ridden over the Takaka hill and back ( 25kms & 365 turns each way) I had began getting used to using the left foot brake at last.When I got home I had a sore jaw from the grin. I have a few old Guzzi's and a 2019 V85 TT Guzzi and Suzuki DR650 for going bush.But the old Guzzis are getting bored now sitting in the shed.The GT is such a lovely bike to ride once everything is adjusted correctly, and it is so easy to maintain.Enjoy your new project .By the time you have done what ever is needed you will be well versed on keeping it in fine form.
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Nice bike, Alan, looks very original. The more you ride these old Laverdas, the more you love them
 
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