Build Saudi 84 - Tilda Bogue Service Station

[wngrog]

Just ran into an issue.

I am putting the carburator back on and using linkage. Somewhere along the way, linkage was removed. I'm assuming there was a cable of sorts but that was all gone.

The studs are too short.

No problem. Get some longer ones.

Pull these out and instead of them being M8 1.25 on the manifold side they are m10 1.5

That's a pretty special item I'm sure. Not Toyota.

I may be able to take some material off the linkage bracket so the nut will start.

Just tossing this on here if anyone knows where a stud like this could be found (longer)

 

[Grayscale]

No rust and no plating, belt-sander chamfer on the ends. Someone with a lathe turned a stepped stud, and may have cut the M8 thread with a die. It might have been manufactured as a mass-produced thing that someone modified, but, it would be easy to make with the most humble of lathes.

 

[cruiserdan]

Almost certainly a field-fix for damaged threads in the intake manifold.

 

[cruiserdan]

Something like this would fix the threads.

KNM8x1.25 Metric Series Keensert

www.clarendonsf.com

 

[mrboatman]

So something like this

https://www.amazon.com/M10-1-50-8-1-25-Double-Steel-Plain/dp/B08NJLJT75/?tag=ihco-20

 

[charliemeyer007]

I have done a lot of making repair stuff like that with my little Unimat to turn down shanks then die on new threads by hand because I don't have the thread cutting attachment for it. Round dies are for thread cutting, hex head dies are for thread chasing in the hand die world.

 

[wngrog]

I pulled some material off the bracket and I feel like I have enough thread engagement.

Like the rear manifold/head bolt. I'm going to have to get it started to make sure there are no leaks.

If I used a insert it would need to be M10 1.5 out and m8 1.25 inner.

The above Amazon link is broken.

 

[pb4ugo]

Stepped studs. A quick internet search and found belmetric handled some.
8mm/10mm x 60mm. I'm sure other vendors might handle either metric or sae.

 

[mrboatman]

Here’s a picture

 

[cruiserdan]

If I used a insert it would need to be M10 1.5 out and m8 1.25 inner.

Not if you enlarge the damaged holes in the intake to the correct OD of the insert.

 

[wngrog]

Not if you enlarge the damaged holes in the intake to the correct OD of the insert.

Ah true. I have an M8 1.25 kit here in stock if in need it. Good idea.

 

[wngrog]

Here’s a picture
View attachment 3848040

Nice. Is that M10 1.25 or 1.5? Can't tell

 

[Jdc1]

Ah true. I have an M8 1.25 kit here in stock if in need it. Good idea.

Might want to seal the time sert insert threads with some jb or anerobic sealant.

 

[Godwin]

I pulled some material off the bracket and I feel like I have enough thread engagement.

Like the rear manifold/head bolt. I'm going to have to get it started to make sure there are no leaks.

If I used a insert it would need to be M10 1.5 out and m8 1.25 inner.

The above Amazon link is broken.

View attachment 3848035

View attachment 3848037

Just curious. Is this the carb that was on your workbench when I stopped by a couple of weeks ago?

 

[wngrog]

Just curious. Is this the carb that was on your workbench when I stopped by a couple of weeks ago?

One of them yes. Why, did you stuff some gum into it?

 

[wngrog]

This should work. Thank you @mrboatman

 

[Godwin]

One of them yes. Why, did you stuff some gum into it?

It's a surprise.

 

[cruiserdan]

One of them yes. Why, did you stuff some gum into it?

I'd be more worried about some sort of reptile.

 

[Grayscale]

That 304 stainless stud will do almost twice as much thermal expansion as the mild steel stud that it replaces. So, expansion will result in a longer, less-torqued stud.

Metals - Temperature Expansion Coefficients

Thermal expansion coefficients metals.

www.engineeringtoolbox.com

If you must use 304-stainless, double-up, use both a wavy and split-lock washer to hopefully avoid vacuum leaks resulting from a heat-expanding stud.

@charliemeyer007 The Irwin-brand hex die does just fine at cutting threads. It does not fit in a conventional die wrench.

 

[WarDamnEagle]

Belmetric has them in Steel in several lengths. Just FYI.

M8 to M10 Step Stud Class 10.9 Steel

Bel-Metric sells metric hardware & specialty automotive supplies worldwide. Visit our website to purchase metric fasteners, nuts, bolts, screws, washers & more.

belmetric.com