Topic: Engine bolt sets/kits?

[rocs]

Where is a good place to buy engine bolt kits? I want to replace all the bolts on the engine cases etc.

Hex vs allen vs phillips? Any preference?

I understand anti seize is an absolute must if going with stainless.

[Airborne 82nd]

Where is a good place to buy engine bolt kits? I want to replace all the bolts on the engine cases etc.

Hex vs allen vs phillips? Any preference?

I understand anti seize is an absolute must if going with stainless.

http://4into1.com/stainless-steel-allen-bolt-set-honda-cb550k-1977-1978/
https://www.boltdepot.com/
http://www.ebay.com/itm/HONDA-1968-1978-SOHC-CB750F-CB750K-CHOPPER-POLISHED-STAINLESS-ENGINE-BOLT-KIT-/310153665220?hash=item4836995ac4:m:mAXevjwFsbfnJFGtqDZ3_Eg&vxp=mtr&rmvSB=true
http://www.ebay.com/itm/MOTORCYCLE-BOLT-KIT-STAINLESS-STEEL-HONDA-CB750-FOUR-SOHC-ENGINE-MOUNTS-/361481535131?hash=item5429fa7e9b:g:EbgAAOSwHPlWeGEP&vxp=mtr&rmvSB=true

[NobleHops]

Stainlesscycle.com is excellent, but it won't be every engine bolt, just the covers. 4i to1.com is also a good bet.

[calj737]

You will struggle to find a few specific case bolts (for the 500/550 at least) that are 155mm in length. Most currently available stainless hex or socket caps stop at 100mm over the counter. I use www.allensfasteners.com and buy ARP in either hex or 12-pt. They cost more, but they are by far the strongest (not really needed on side covers, etc) and widely available bolts out there.

[rocs]

Where is a good place to buy engine bolt kits? I want to replace all the bolts on the engine cases etc.

Hex vs allen vs phillips? Any preference?

I understand anti seize is an absolute must if going with stainless.

http://4into1.com/stainless-steel-allen-bolt-set-honda-cb550k-1977-1978/
https://www.boltdepot.com/
http://www.ebay.com/itm/HONDA-1968-1978-SOHC-CB750F-CB750K-CHOPPER-POLISHED-STAINLESS-ENGINE-BOLT-KIT-/310153665220?hash=item4836995ac4:m:mAXevjwFsbfnJFGtqDZ3_Eg&vxp=mtr&rmvSB=true
http://www.ebay.com/itm/MOTORCYCLE-BOLT-KIT-STAINLESS-STEEL-HONDA-CB750-FOUR-SOHC-ENGINE-MOUNTS-/361481535131?hash=item5429fa7e9b:g:EbgAAOSwHPlWeGEP&vxp=mtr&rmvSB=true

Thanks! I saw these kits on ebay but wasn't sure which was the best. I see some come with just the bolts and some include washers. Not sure which is the preferred set on the boards

The last link you included is the actual axle bolts for mounting the engine. I haven't seen these around yet!  Does anyone have a US supplier for these?

[rocs]

You will struggle to find a few specific case bolts (for the 500/550 at least) that are 155mm in length. Most currently available stainless hex or socket caps stop at 100mm over the counter. I use www.allensfasteners.com and buy ARP in either hex or 12-pt. They cost more, but they are by far the strongest (not really needed on side covers, etc) and widely available bolts out there.

Thanks for the site Cal!

I need to replace the front engine mount bolts on my engine when I get ready for install. The bolts that attach the engine to the frame using the two brackets. Does anyone have a source for these bolts?

Edit: just did a search for the front mount bolts are they are M10x80. Ironically it was a post by you Cal

[calj737]

Allensfasteners has 10x80 in ARP hex heads. In stainless and black oxide, but not a fan of black oxide for external usage on engines. You can get them in both 1.25 and 1.5 pitch too 

You asked about flange head or hex with washers. Metric flange heads have a slightly wider dimension than JIS hex with washers. In the end, the torque value is low enough that I don't believe it makes an iota of difference which you use.

[drumstyx]

I have a stainless engine bolt kit I got on eBay.. I haven't used it yet, but I've heard stainless bolts are much weaker than regular bolts...is that true?

[calj737]

I have a stainless engine bolt kit I got on eBay.. I haven't used it yet, but I've heard stainless bolts are much weaker than regular bolts...is that true?

All depends upon what grade of stainless and what grade of steel you compare. With respect to ARPs, their tensile strength is 175,000-190,000. Grade 8 is about 150,000. Most of the cover bolts are probably Grade 5 at best, some mounts are surely 8s.

[colvinry]

What we need to do is put together a complete bolt size list and then people can order what they need or get the whole kit from McMaster or their favorite fastener shop.


Sent from my iPhone using Tapatalk

[NobleHops]

What we need to do is put together a complete bolt size list and then people can order what they need or get the whole kit from McMaster or their favorite fastener shop.


Sent from my iPhone using Tapatalk

Great idea man. Dig in! :-)

[rocs]

After doing some searching throughout the forums, I ended up buying a complete kit from http://www.stainlesscycle.com. I also purchased the front engine mount bolts, lock washers and nuts as well since they tend to be harder to find.

It may be cheaper to purchase these kits rather than assembling a kit on our own.

[itsahonda4]

I think the point we are trying to get to is to be able to buy a set of NOS type bolts and screws is it not? I personally have no interest whatsoever in allen bolts...
Be that as it may, I have a couple of spare engines and Im going to strip one and do a simple exercise on what the cost would be to get them nickel plated and then offer an exchange service, or alternatively, go to a supplier and ask for a package of all the enclosed bolts in one bag....
Is that the direction some people would like me to go?
But I will only do early SOHC's up till about 77 when those hondamatic things came out....
Al

[slikwilli420]

http://www.mcmaster.com/#machine-screws/=145z1ay

That is your best and cheapest bet I have found so far for JIS fasteners. Come in SS if you want as well as Zinc.

[Alan F.]

Good quality kits made by a member of sohc4 for over a decade.

http://www.metrocast.net/~spillane/index_004.htm