Interesting problem.....Head studs

Senior Rider

Currently Offline

Posts: 923
Likes: 68
Joined: Mar 7, 2013 23:37:36 GMT -5

Interesting problem.....Head studs by: urbanmadness - Mar 8, 2013 0:28:54 GMT -5

Reply Quote

Post by urbanmadness on Mar 8, 2013 0:28:54 GMT -5

Well, my first post on the new board.... so here it goes.

I'm rebuilding the top end of a MotoBrovo Super Hornet 150cc, and it seems that I'm working on an oddball...

So, I was almost done with it, hat it back together and I was tightening the heads to 26ft lbs and heard a nice loud, POP. I broke a head stud, in the case.

So I got out the drill, and the easy outs, and did the happy dance when I got the end of the stud out of the case.

Now comes the interesting part, I too the old stud into the local scooter shop and got a replacement and it seems to be the wrong diameter.

Did Moto Brovo use an odd ball diameter for thier head studs? Anyone else run into this?

Thanks guys

2007 Verona 150cc
115MM Hoca variator
12 gram weights
relocated battery
Mukuni fuel pump
300lbs rider
top speed (58mph on GPS)
Upgraded valve stems after a blow out

justbuggin2 PM justbuggin2 justbuggin2's Posts justbuggin2's Threads Senior Rider Currently Offline Posts: 1,952 Likes: 16 Joined: Feb 24, 2013 18:28:47 GMT -5	Interesting problem.....Head studs by: justbuggin2 - Mar 8, 2013 2:19:07 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by justbuggin2 on Mar 8, 2013 2:19:07 GMT -5 if it is bigger than what you can get then try using a tread incert or if it is smaller then drill and tap the hole for the bigger stud
	Wildfire 150 11 pole stator upgrade EFI system LED dash and taillights Duplicolor paint job

tvnacman PM tvnacman tvnacman's Posts tvnacman's Threads Senior Rider Currently Offline Posts: 2,256 Likes: 206 Joined: Feb 24, 2013 14:17:35 GMT -5	Interesting problem.....Head studs by: tvnacman - Mar 8, 2013 6:58:59 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tvnacman on Mar 8, 2013 6:58:59 GMT -5 Mic the old and measure lenth and post . John
	Talk to Tvnacman at www.nycscooterparts.com/ Chinese scooter parts , cdi , coil , GY6

Senior Rider

Currently Offline

Posts: 923
Likes: 68
Joined: Mar 7, 2013 23:37:36 GMT -5

Interesting problem.....Head studs by: urbanmadness - Mar 8, 2013 19:43:45 GMT -5

Reply Quote

Post by urbanmadness on Mar 8, 2013 19:43:45 GMT -5

Mar 8, 2013 2:19:07 GMT -5 justbuggin2 said:

if it is bigger than what you can get then try using a tread incert or if it is smaller then drill and tap the hole for the bigger stud

I think I would have one made at the a machine shop before I'd start drilling and putting an insert in. All I'd have to do is have them turn down a new one, then thread it. I don't need to go thru all of that tho, as I did manage to find one at the other local scooter shop.

I hope to get this bugger back together tomorrow night... ridable at least. It still need a new varator and a belt... But that's easy stuff for next week.

All and all I'm excited about getting her back together....

2007 Verona 150cc
115MM Hoca variator
12 gram weights
relocated battery
Mukuni fuel pump
300lbs rider
top speed (58mph on GPS)
Upgraded valve stems after a blow out

Senior Rider

Currently Offline

Posts: 923
Likes: 68
Joined: Mar 7, 2013 23:37:36 GMT -5

Interesting problem.....Head studs by: urbanmadness - Mar 8, 2013 19:45:16 GMT -5

Reply Quote

Post by urbanmadness on Mar 8, 2013 19:45:16 GMT -5

Mar 8, 2013 6:58:59 GMT -5 tvnacman said:

Mic the old and measure lenth and post .

John

I don't have a micrometer... or a veneer... both of which are on my wish list. However, I can post a video and will...

I'm just glad I managed to find the correct stud at the other scooter shop in town. We have two.

2007 Verona 150cc
115MM Hoca variator
12 gram weights
relocated battery
Mukuni fuel pump
300lbs rider
top speed (58mph on GPS)
Upgraded valve stems after a blow out

urbanmadness PM urbanmadness urbanmadness's Posts urbanmadness's Threads Senior Rider Currently Offline Posts: 923 Likes: 68 Joined: Mar 7, 2013 23:37:36 GMT -5	Interesting problem.....Head studs by: urbanmadness - Mar 31, 2013 3:24:44 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by urbanmadness on Mar 31, 2013 3:24:44 GMT -5 [replyingto=urbanmadness]urbanmadness[/replyingto]Here is the video i keep promising...
	Last Edit: Apr 2, 2013 0:53:41 GMT -5 by urbanmadness 2007 Verona 150cc 115MM Hoca variator 12 gram weights relocated battery Mukuni fuel pump 300lbs rider top speed (58mph on GPS) Upgraded valve stems after a blow out

Interesting problem.....Head studs By urbanmadness (Read 1,042 times)

Post by urbanmadness on Mar 8, 2013 0:28:54 GMT -5

Post by justbuggin2 on Mar 8, 2013 2:19:07 GMT -5

Post by tvnacman on Mar 8, 2013 6:58:59 GMT -5

Post by urbanmadness on Mar 8, 2013 19:43:45 GMT -5

Post by urbanmadness on Mar 8, 2013 19:45:16 GMT -5

Post by urbanmadness on Mar 31, 2013 3:24:44 GMT -5

Shoutbox