Hairball27
XS650 Enthusiast
does anybody have any experience with the 80 mm big fin jug from XS650.com ?https://yamahaxs650.com/wp-content/uploads/2020/11/FilHE465.jpg
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big fin big bore cylinder
- Thread starter Hairball27
- Start date
Some history here. https://www.xs650.com/threads/big-bore-kits-350.59234/#post-683711
I have one installed but shamefully motor's just sitting on a lift out in the shed.
I have one installed but shamefully motor's just sitting on a lift out in the shed.
Hairball27
XS650 Enthusiast
ugh
Hairball27
XS650 Enthusiast
i did read through all of that, i seen this and asked myself unless they are questionable , why go through the expense of installing a BB sleeves ?
Mike had someone bore the stud holes out so they should be plug n play, but getting someone experienced to confirm piston bore fit always the smart course.
Hairball27
XS650 Enthusiast
the pistons i want to use arwe a smidge larger but under 80mm, so fitting is necessary, just wonder about quality,
AFAIK these are made by the same supplier that's built the big bores sold by various venders "forever". That's really how this has worked for decades, Mike Legrand sources venders in the "far east" that make parts to fit the XS, then sells and resells to other venders. There's a long story but that can mostly be found elsewhere 'round here.
Beyond the tight stud holes (30min fix), the kits do look and feel very nice quality.
But I am also pushin the same boat as Gary - motor is built (mines in the bike) but havnt got it up and running yet. There have been a few bikes on here that were built with those kits and I don’t know of any issues reported.
But I am also pushin the same boat as Gary - motor is built (mines in the bike) but havnt got it up and running yet. There have been a few bikes on here that were built with those kits and I don’t know of any issues reported.
If they are the same as the other vendors sell - Mikes, Heiden, 650 Central then they are fine. Used one on the long rod motor I have told you about no troubles at all. The last one I installed (thank you Gary) had the stud hole problem apart from that all good. Because of Covid there is no racing here so the last install has only been started needs to be run in.
A Mikes XS Performance BB 750 Kit was/is used on the Aussie XS650 club, Club racer.
Full read up to 2019 here.
https://old.xs650.org.au/Club Racer Stuff/Club Racer.htm.
Some times racing and places in 2018
2019 the bike winning P4 750 unlimited
https://old.xs650.org.au/Club Racer Stuff/Club Racer 2017.htm
May have gone faster since 2019 but on one of these pages the bike topped just over 190kph in one race.
Full read up to 2019 here.
https://old.xs650.org.au/Club Racer Stuff/Club Racer.htm.
Some times racing and places in 2018
2019 the bike winning P4 750 unlimited
https://old.xs650.org.au/Club Racer Stuff/Club Racer 2017.htm
May have gone faster since 2019 but on one of these pages the bike topped just over 190kph in one race.
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