Polished stainless complete bolt kits for big twins.

[Smarty]

Does anyone know if anyone but Diamond Engineering out of Florida makes the polished stainless replacement bolt kits for the big twin motors? Diamond is almost $350

[rmc115]

try alloyboltz.com, always good prices. Mike

[86fxwg]

A.R.P


86

[No Cents]

 try:
allensfateners.com    ...for ARP or either chrome, or stainless bolts.
He charges the same $6.95 flat rate shipping for one bolt...or a hundred bolts.

Ray

[Smarty]

Thanks guys. I knew some of you would know some others than Diamond Engineering. They are proud of their bolts for sure. I just checked out Alloy and much better pricing. Would you go with show polish stainless or the show polish grade 8 stainless on the primary, cam, covers, etc.

[No Cents]

 I don't care for stainless bolts into aluminum...myself.

Ray

[HighLiner]

 

Thanks guys. I knew some of you would know some others than Diamond Engineering. They are proud of their bolts for sure. I just checked out Alloy and much better pricing. Would you go with show polish stainless or the show polish grade 8 stainless on the primary, cam, covers, etc.

If you ever plan on taking it back apart, spring for the grade 8.

[Smarty]

Thanks guys. I knew some of you would know some others than Diamond Engineering. They are proud of their bolts for sure. I just checked out Alloy and much better pricing. Would you go with show polish stainless or the show polish grade 8 stainless on the primary, cam, covers, etc.

If you ever plan on taking it back apart, spring for the grade 8.

That's exactly what I'm ordering. Doing it right the first time!

[Smarty]

I don't care for stainless bolts into aluminum...myself.

Ray

Why is that Ray? If torque wrenches are used, should be no problem of pulling the threads out I would think.

[No Cents]

 stainless bolts that have been bolted into aluminum don't play well together over time...even if properly torqued.
The different properties of the two metal alloys is what I'm referring to.

Ray

[Smarty]

stainless bolts that have been bolted into aluminum don't play well together over time...even if properly torqued.
The different properties of the two metal alloys is what I'm referring to.

Ray

Gotcha, something to think about for sure

[Admiral Akbar]

stainless bolts that have been bolted into aluminum don't play well together over time...even if properly torqued.
The different properties of the two metal alloys is what I'm referring to.

Ray

Funny but I don't have any issues with them. like better than grade 8 Allen.
What becomes an issue is 304 into 304 without any lubricant. Can lock up tight.

[No Cents]

 I've just seen too many stainless bolts pull the threads out of aluminum when removing them. I ended up having to Heli-coil the bolt holes on many different instances.
Maybe it was just bad luck...and I wish it on no one...just stating what I've seen.

Ray

[JohnCA58]

I have stainless ARP 12 pt. throughout my engine and transmission, always used a stainless dedicated lubricant and never had any issues.

Have always order from Alloyboltz.  Husband and wife team operating out of their garage.

[SOCS]

+1 for Alloyboltz. Been buying from them for 13 years with no issues

[Admiral Akbar]

I'd suspect that the bolts were torqued too high. Especially if using ARP bolts. Finish is slicker than grade 8.  With a lubricant, its even worse. I use 304, torqued to 304 specs and a little blue and no issues to date.

[1FSTRK]

I've just seen too many stainless bolts pull the threads out of aluminum when removing them. I ended up having to Heli-coil the bolt holes on many different instances.
Maybe it was just bad luck...and I wish it on no one...just stating what I've seen.

Ray

I learned from the local shop that the proper loctite for the job will not only keep the bolt from coming loose but I have never had a reaction between the bolt and the aluminium or had to helicoil a hole.

Added
Not to take this off topic but every bolt gets a tq wrench.

[FXDBI]

I'd suspect that the bolts were torqued too high. Especially if using ARP bolts. Finish is slicker than grade 8.  With a lubricant, its even worse. I use 304, torqued to 304 specs and a little blue and no issues to date.

   Drop of blue on the threads and min torque in a PROPER pattern never  had a problem been doing it that way since the 70s when Loctite was first shown to me. If bolts are not tightened in steps and in a proper pattern you will create problems with over tightened bolts.  Bob

[SOCS]

I'd suspect that the bolts were torqued too high. Especially if using ARP bolts. Finish is slicker than grade 8.  With a lubricant, its even worse. I use 304, torqued to 304 specs and a little blue and no issues to date.

exactly, Alloyboltz includes paperwork that notes the lower torque spec

[Smarty]

Thanks for all the comments. I'm ordering on Monday from Allow.

[rmc115]

Alloy Boltz advises use of lock tite to prevent dissimilar metal corrosion. I have been using them for 10 years without any issue. I am too cheap to buy the full polish and the standard ones are a "light" polish look good and do not corrode like the stockers in 2 years. Mike

[Xanadu]

to prevent galling be sure to use some kind of lubricant.  once the bolt galls its cold welds itself and you cant take it apart.

I wanted to replace all the zinc plated fasteners on my motor with nice chromed ones... decided not to do that based on what I read at the beginning of my service manual.  Another thing I have found with the chrome plated fasteners is you can see orange in the allen sockets and around the bolt as the underlying steel rusts.  the stock HD bolts which are zinc plated hold up much better to corrosion  and I dont have to use a q-tip with polish on it to clean out the inside of the allen heads.

[hattitude]

stainless bolts that have been bolted into aluminum don't play well together over time...even if properly torqued.
The different properties of the two metal alloys is what I'm referring to.

Ray

I had to deal with this all the time maintaining/installing equipment on my boat. Obviously more apparent in a marine environment, but galvanic corrosion can/will happen when dissimilar metals come in contact with each other.

Limit the contact (isolate the metals), or exist in a less corrosive environment and the galvanic corrosion will be mitigated.

FYI:
http://www.galvanizeit.org/design-and-fabrication/design-considerations/dissimilar-metals-in-contact

[Rags722]

to prevent galling be sure to use some kind of lubricant.  once the bolt galls its cold welds itself and you cant take it apart.

I wanted to replace all the zinc plated fasteners on my motor with nice chromed ones... decided not to do that based on what I read at the beginning of my service manual.  Another thing I have found with the chrome plated fasteners is you can see orange in the allen sockets and around the bolt as the underlying steel rusts.  the stock HD bolts which are zinc plated hold up much better to corrosion  and I dont have to use a q-tip with polish on it to clean out the inside of the allen heads.

I've always found the stock Zinc Plated and S-100 don't play well together... unless you use something close to the amount of water in Lake Eire to rinse the S-100 off.

[Admiral Akbar]

stainless bolts that have been bolted into aluminum don't play well together over time...even if properly torqued.
The different properties of the two metal alloys is what I'm referring to.

Ray

I had to deal with this all the time maintaining/installing equipment on my boat. Obviously more apparent in a marine environment, but galvanic corrosion can/will happen when dissimilar metals come in contact with each other.

Limit the contact (isolate the metals), or exist in a less corrosive environment and the galvanic corrosion will be mitigated.

FYI:
http://www.galvanizeit.org/design-and-fabrication/design-considerations/dissimilar-metals-in-contact

Good stuff.. This chart puts the 2 metals closer on the Galvanic Chart..

http://www.engineersedge.com/galvanic_capatability.htm

While SS is more anodic than simple steel, both can corrode and stick in aluminum, especially when there is a electrolyte involved..