Length of "extra" Lightweight head bolt

Helpful information and requests for assitance and advice
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clanger9
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Re: Length of "extra" Lightweight head bolt

Post by clanger9 »

Janet, you do realise it's under the rocker box? It's not the easiest bolt to get at!
To save you the bother, I can try a standard 3" bolt first...
1989 Moto Morini Dart 350
1993 Ducati 750SS
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Ozmadman
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Re: Length of "extra" Lightweight head bolt

Post by Ozmadman »

Pictures of my mod to the extra head bolt
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Paul
1960 Model 8
1974 Yamaha RD250B US Model 6 speed
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Janet
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Re: Length of "extra" Lightweight head bolt

Post by Janet »

clanger9 wrote:Janet, you do realise it's under the rocker box? It's not the easiest bolt to get at!
To save you the bother, I can try a standard 3" bolt first...
Eeeh lad! I'm dim but not daft. While I could dishonestly claim the credit for being selflessly helpful, I'm not dismantling it just for you.
Back in October in Belgium, Vesta has begun to burn oil at a greater rate than previously. (I fix the major leaks and it finds another way out :lol: ) Yesterday morning, having started it up because I hadn't used it for a while, I decided to investigate the cause so need to take a look inside.
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clanger9
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Re: Length of "extra" Lightweight head bolt

Post by clanger9 »

Janet wrote:
clanger9 wrote:Janet, you do realise it's under the rocker box? It's not the easiest bolt to get at!
To save you the bother, I can try a standard 3" bolt first...
Eeeh lad! I'm dim but not daft. While I could dishonestly claim the credit for being selflessly helpful, I'm not dismantling it just for you.
Back in October in Belgium, Vesta has begun to burn oil at a greater rate than previously. (I fix the major leaks and it finds another way out :lol: ) Yesterday morning, having started it up because I hadn't used it for a while, I decided to investigate the cause so need to take a look inside.
Daft? Perish the thought! :rofl:
Thanks, Janet. If you've got the lid off then it'd be great to get confirmation of the bolt size.
1989 Moto Morini Dart 350
1993 Ducati 750SS
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Janet
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Re: Length of "extra" Lightweight head bolt

Post by Janet »

The errant bolt is a total length of 3" from the base of the head to end. The threaded part is ¾". Just for clarity, that's at the end not next to the head. :rofl:
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clanger9
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Re: Length of "extra" Lightweight head bolt

Post by clanger9 »

Perfect, thanks Janet!
1989 Moto Morini Dart 350
1993 Ducati 750SS
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clanger9
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Re: Length of "extra" Lightweight head bolt

Post by clanger9 »

I can confirm that a standard 5/16" x 3" BSF bolt is a perfect fit. Thanks everyone!
1989 Moto Morini Dart 350
1993 Ducati 750SS
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