SFC Posted February 7, 2021 Share Posted February 7, 2021 just gone back to hydrolic clutch on 1100m and need to know pushrod length , also going to fit 40mm carbs as just sold the 36mm ones and need to know standard settings or a decent set-up with v&h sidewinder (baffled) and ram air filters Quote Link to comment
clivegto Posted February 7, 2021 Share Posted February 7, 2021 Push rod length is approximately 101.5mm in length. You will struggle to get the 40mm carbs set up properly with filters they like a airbox. I sold my one's in the end, you would be better of with 38's. 1 Quote Link to comment
SFC Posted February 7, 2021 Author Share Posted February 7, 2021 cant use airbox with my frame, cant seem to get the 40 on rubbers , anyway of telling if i ended up buying watercooled carbs ? Quote Link to comment
Gixer1460 Posted February 7, 2021 Share Posted February 7, 2021 53 minutes ago, SFC said: cant use airbox with my frame, cant seem to get the 40 on rubbers , anyway of telling if i ended up buying watercooled carbs ? Yeah - they don't normally follow the 77-93-77 or 78-90-78 carb body spacing of air / oil cooled engines! And as said 40's without an airbox will run crap / be largely untunable compared to 36 / 38's Quote Link to comment
SFC Posted February 7, 2021 Author Share Posted February 7, 2021 (edited) can anyone verify if these are oilcooled ? 38mm Edited February 7, 2021 by SFC Quote Link to comment
TonyGee Posted February 7, 2021 Share Posted February 7, 2021 (edited) have you measured the bore ? do they have a TPS or not ? from this angle they look similar to mk2 bandit !!! Edited February 7, 2021 by TonyGee Quote Link to comment
SFC Posted February 7, 2021 Author Share Posted February 7, 2021 they are for sale that i want to buy, listed as 38mm , no tps, thinks they came from oil cooled but he is not sure Quote Link to comment
Dezza Posted February 8, 2021 Share Posted February 8, 2021 If they are from an oil-cooled bike then the original machine would have to be a 750M, as the BST38s from the 750L have RS-style plugs that enable main jet changes without removing the float bowls. Get the seller to measure the spacings or pass: the 750W carbs aren't going on an oil-cooled engine without a whole load of grief. 1 Quote Link to comment
SFC Posted February 8, 2021 Author Share Posted February 8, 2021 8 hours ago, Dezza said: If they are from an oil-cooled bike then the original machine would have to be a 750M, as the BST38s from the 750L have RS-style plugs that enable main jet changes without removing the float bowls. Get the seller to measure the spacings or pass: the 750W carbs aren't going on an oil-cooled engine without a whole load of grief. i dont think he knows what they came off as he was going to use them for a car , i asked if they are oilcooled and he thinks they might be, when measuring is it center to center bore and what should oilcooled be ?? Quote Link to comment
Gixer1460 Posted February 8, 2021 Share Posted February 8, 2021 1 hour ago, SFC said: i dont think he knows what they came off as he was going to use them for a car , i asked if they are oilcooled and he thinks they might be, when measuring is it center to center bore and what should oilcooled be ?? 23 hours ago, Gixer1460 said: Yeah - they don't normally follow the 77-93-77 or 78-90-78 carb body spacing of air / oil cooled engines! And as said 40's without an airbox will run crap / be largely untunable compared to 36 / 38's Reading previous messages helps ! 1 Quote Link to comment
SFC Posted February 8, 2021 Author Share Posted February 8, 2021 (edited) Centre of choke to centre of choke of outer carbs is 85mm and 91mm for inner carbs Edited February 8, 2021 by SFC Quote Link to comment
SFC Posted February 8, 2021 Author Share Posted February 8, 2021 (edited) Centre of choke to centre of choke of outer carbs is 85mm and 91mm for inner carbs. With my crappy eyes these measurements could be 1-2 mm out so are a fair ball park Cetntre of choke to centre of choke of outer carbs is 85mm and 91mm for inner carbs. t With my crappy eyes theCentre of choke to centre of choke of outer carbs is 85mm and 91mm for inner carbs.se measu Centre of choke to centre of are a fair ball park rements could be 1-2 mm out so are a fair ball park Edited February 8, 2021 by SFC Quote Link to comment
SFC Posted February 8, 2021 Author Share Posted February 8, 2021 this is the info he just sent me , if anyone can verify these are oilcooled 38mm i can buy them tonight , thanking you all Quote Link to comment
Dezza Posted February 8, 2021 Share Posted February 8, 2021 (edited) Personally, I would give them a miss. 750 W carbs are spaced 85-90-85.; oil cooled is as stated above 77-93-77. The 750W carbs are used by boy racers to soup up their Novas, Escorts or whatever. The information as to why these carbs won't fit very easily to an oil-cooled engine is given in the link below. It's a sticky on the top of this section and is fairly easy to find...... Someone has got them onto an oil-cooled by a mix-and-match with different carb rubbers but it would be a whole lot less grief to buy a set of correctly spaced carbs in the first place. Edited February 8, 2021 by Dezza 1 Quote Link to comment
SFC Posted February 8, 2021 Author Share Posted February 8, 2021 much apreciated for all your input , think i will take advise and pass on them, many thanks , carl Quote Link to comment
Dezza Posted February 14, 2021 Share Posted February 14, 2021 On 2/8/2021 at 8:47 PM, SFC said: much apreciated for all your input , think i will take advise and pass on them, many thanks , carl There are a set of what look like 750L BST38s in the for sale section now . 1 Quote Link to comment
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