CB750 DOHC Con Rod Bolts

[pwtrainor]

Hello everyone,
I'm rebuilding a CB750 DOHC and am having a lot of trouble finding a source for new con rod bolts. I have searched everywhere online, by name, by part number (13204-689-004). I have spoken to mechanics and dealers. Apparently they're not making them anymore. Any help would be much appreciated.
Thanks,
Peter

[Re-run]

Well, mechanics and dealers are terrible sources of info.

First site I checked, davidsilverspares.com has them if you search by the part number.
http://www.davidsilverspares.com/parts/by-part-number/part_13204689004/

Go through the list of sites were have, most likely some others have them too.

[pwtrainor]

Thanks. I have found quite a few sites that claim to have them, but when I actually put in the order, they end up discovering that they don't. Here's hoping that this one is different.

On 28 May 2015 11:18, "Re-run [via Honda CB750'S]" <[hidden email]> wrote:

Well, mechanics and dealers are terrible sources of info.

First site I checked, davidsilverspares.com has them if you search by the part number.
http://www.davidsilverspares.com/parts/by-part-number/part_13204689004/

Go through the list of sites were have, most likely some others have them too.

The ride IS the adventure. The destination is just to get gas!

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NAML

[Re-run]

David silver is usually pretty good about what they have.

[TOOLS1]

I am curious as to why you need new ones. The original con rod bolts are reusable. The only reason to change them would be for a really high performance application, and then I would be contacting ARP.
TOOLS

[pwtrainor]

I would happily reuse the old ones, but my mechanic and my mechanics prof at the local community college have both told be that they're a one-use part because they stretch when properly torqued. Is that not the case as far as you know?

On 28 May 2015 12:06 pm, "TOOLS1 [via Honda CB750'S]" <[hidden email]> wrote:

I am curious as to why you need new ones. The original con rod bolts are reusable. The only reason to change them would be for a really high performance application, and then I would be contacting ARP.
TOOLS

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run

1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K X 2
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

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[TOOLS1]

That is the case on some newer vehicles, but not on these bikes. Go on and reuse them. If you want a second opinion on this, call the guys at Cycle-X, or find an old bike mechanic.
TOOLS
BTW. Most reputable bike shops that work on these old bikes will not even talk to formally schooled mechanics when they come in asking about employment.

[pwtrainor]

Thanks for your thoughts on this.

On 28 May 2015 7:06 pm, "TOOLS1 [via Honda CB750'S]" <[hidden email]> wrote:

That is the case on some newer vehicles, but not on these bikes. Go on and reuse them. If you want a second opinion on this, call the guys at Cycle-X, or find an old bike mechanic.
TOOLS
BTW. Most reputable bike shops that work on these old bikes will not even talk to formally schooled mechanics when they come in asking about employment.

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run

1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K X 2
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

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NAML

[shinyribs]

The one-use bolts are what's referred to as torque to yield fasteners. You actually stretch them to the point of almost failure, so definitely not reusable.

But these bikes just have good old fashioned bolts. Torque to factory specs and roll on. If you're really worried ( I usually am) use a dab of red loctite.

[shinyribs]

TOOLS1 wrote

That is the case on some newer vehicles, but not on these bikes. Go on and reuse them. If you want a second opinion on this, call the guys at Cycle-X, or find an old bike mechanic.
TOOLS
BTW. Most reputable bike shops that work on these old bikes will not even talk to formally schooled mechanics when they come in asking about employment.

Tools, you ARE an old bike mechanic!

[TOOLS1]

Yea, I mechanic on old bikes.
TOOLS

[pwtrainor]

Thanks!

On 28 May 2015 at 20:32, shinyribs [via Honda CB750'S] <[hidden email]> wrote:

The one-use bolts are what's referred to as torque to yield fasteners. You actually stretch them to the point of almost failure, so definitely not reusable.

But these bikes just have good old fashioned bolts. Torque to factory specs and roll on. If you're really worried ( I usually am) use a dab of red loctite.

A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington

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NAML

[Re-run]

Yeah, there is nothing new about these bikes really. Old tech was used, partly why they are still around and running as well as when first built. Hell, a person could get a good grade 8 bolt and nut and just go that way probably.