Author Topic: Replacement case screw sets  (Read 4719 times)

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Offline edwardmorris

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Replacement case screw sets
« on: November 21, 2013, 02:58:23 PM »
I was wondering if any of those (allegedly) CB750 replacement stainless steel screw sets (80-113 pieces) on ebay are the real thing? Has anyone used them? I've seen that most people tend to replace them with Allen heads, but to retain the original look, the steel ones look pretty neat. Thoughts? Sample sets here

80 Piece Set
113 Piece Set

Offline brewsky

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Re: Replacement case screw sets
« Reply #1 on: November 21, 2013, 04:22:15 PM »
those look like allen heads to me
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Offline Dream750

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Re: Replacement case screw sets
« Reply #2 on: November 21, 2013, 05:07:58 PM »
The 80 piece eBay set is sold by forum member #28: Jim Spillane and is the real deal. I have his 80 piece stainless Phillips head (not Allen) screws in my 750 K1 engine, which I purchased from his website:

http://screwsforcycles.wordpress.com/ 

Not correct for a concours d'elegance restoration, but a nice quality kit that‘s hard to go wrong with. If desired, his stainless steel Phillips screws can be polished up to a chrome like finish.

Offline brewsky

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Re: Replacement case screw sets
« Reply #3 on: November 22, 2013, 02:37:10 AM »
The 80 piece eBay set is sold by forum member #28: Jim Spillane and is the real deal. I have his 80 piece stainless Phillips head (not Allen) screws in my 750 K1 engine, which I purchased from his website:

http://screwsforcycles.wordpress.com/ 

Not correct for a concours d'elegance restoration, but a nice quality kit that‘s hard to go wrong with. If desired, his stainless steel Phillips screws can be polished up to a chrome like finish.
Oops....didn't dig deep enough to see he offers phillips too.......do the "european phillips" heads have the larger 12mm head diameter? (vs JIS 10mm for original)

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Offline 70CB750

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Re: Replacement case screw sets
« Reply #4 on: November 22, 2013, 02:42:58 AM »
Watch the torque if you use socket heads, does not take much to strip thread in aluminum.

Anyway, I have good experience with this seller (swingarm bushings)  and I will get his kit for my F engine:

http://www.ebay.com/itm/Honda-CB-750-CB750-Four-K0-K7-F1-stainless-steel-bolt-set-new-/280950457500?pt=Motorcycles_Parts_Accessories&hash=item4169f3c49c
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Offline brewsky

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Re: Replacement case screw sets
« Reply #5 on: November 22, 2013, 02:54:55 AM »
I was wondering................................. are the real thing?

Depends what your definition of "real" is..................

You can still get OEM plated phillips from Honda...

Current 6mm replacement phillips heads from most vendors have a larger than original head diameter.

The socket head replacements have the smaller headsize, but don't look original

You can also get original size phillips in plated or stainless here:

http://www.rimfire-eng.com/CB750_Ordering_Page.htm

although I haven't tried them myself/

NOT TO MENTION..................

the corrosion issue with stainless, which can quickly deteriorate into an "oil" thread!

http://www.fastenal.com/content/feds/pdf/Article%20-%20Corrosion.pdf

basically,

plated fastener in aluminum case....fastener corrodes onto case

stainless fastener in alum case.....case corrodes onto fastener

correct anti-sieze helps
« Last Edit: November 22, 2013, 03:58:17 AM by brewsky »
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Offline Dream750

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Re: Replacement case screw sets
« Reply #6 on: November 22, 2013, 05:12:00 AM »
...do the "european phillips" heads have the larger 12mm head diameter? (vs JIS 10mm for original)

The Jim Spillane "european phillips" head screws measured at: 0.460” (OD) using my Starrett dial calipers. If my math is correct, that converts to: 11.68 mm

Offline jpfrk2001

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Re: Replacement case screw sets
« Reply #7 on: November 22, 2013, 08:25:08 AM »
The simple, proper treatment of SS into aluminum is using Anti-seize or Threadlock where appropriate. Anti-seize prevents dissimilar metals from corroding and prevents, as the name indicates, thread seizure either due to corrosion or galling.

Socket cap screw heads are also larger in diameter than original JIS screws. In fact, a common problem using SHCS is the conflict around tappet covers scraping the fastener. A button head cap screw is better there if you are using socket heads.

Another approved method is using primar paint. I use this method. You spray down the fastener or mating surface with a thick runny coat. Then you assemble or install the fastener while it is "WET".

If you can, try and look for a primer spray called "Epoxy Primer". Its very toxic, but provides the best protection. It is used when working on Aircraft of various sorts.
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Offline Jayelwin

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Re: Replacement case screw sets
« Reply #8 on: November 22, 2013, 12:20:56 PM »
I got Jim spillaine's engine set and front end set. Nice.

Offline Jayelwin

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Re: Replacement case screw sets
« Reply #9 on: November 22, 2013, 12:27:50 PM »
A question about anti seize. Wouldn't that compromise the screw, sort of a lubricant acting the opposite of loctite? Wouldn't it be more like eventuallymakeloose.

Offline edwardmorris

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Re: Replacement case screw sets
« Reply #10 on: November 22, 2013, 01:00:04 PM »
Dream750 and 70CB750, have you used/planning to use any mating surface compound with these?

Offline grepper

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Re: Replacement case screw sets
« Reply #11 on: November 22, 2013, 01:37:46 PM »
I just used this set http://www.ebay.com/itm/HONDA-CB750-SOHC-POLISHED-STAINLESS-BOLT-KIT-best-one-SCREWS-/261333958295?pt=Motorcycles_Parts_Accessories&hash=item3cd8b7be97&vxp=mtr
Also available at http://www.stainlesscycle.com/catalog/

I really liked his set for a couple of reasons.  1.  They were separated into smaller bags saying what cover they were for.  Most of the times I've bought bolt sets, they just all come in one bag and narrowing down what goes where is kind of a puzzle.  2.  As I replaced each screw I compared it to the length of the stock screws and they were dead on. 

stainlesscycle also suggested anti-seize.

Offline 70CB750

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Re: Replacement case screw sets
« Reply #12 on: November 22, 2013, 01:49:37 PM »
Was not planning, but looks like I should  :)
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Re: Replacement case screw sets
« Reply #13 on: November 22, 2013, 03:02:17 PM »
I just used this set http://www.ebay.com/itm/HONDA-CB750-SOHC-POLISHED-STAINLESS-BOLT-KIT-best-one-SCREWS-/261333958295?pt=Motorcycles_Parts_Accessories&hash=item3cd8b7be97&vxp=mtr
Also available at http://www.stainlesscycle.com/catalog/

I really liked his set for a couple of reasons.  1.  They were separated into smaller bags saying what cover they were for.  Most of the times I've bought bolt sets, they just all come in one bag and narrowing down what goes where is kind of a puzzle.  2.  As I replaced each screw I compared it to the length of the stock screws and they were dead on. 

stainlesscycle also suggested anti-seize.
Thanks for sharing that! Getting it right now.

Love this thread!

Offline cheftuskey121

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Re: Replacement case screw sets
« Reply #14 on: November 22, 2013, 03:28:09 PM »
Ordered a set for my F as well :)

Offline edwardmorris

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Re: Replacement case screw sets
« Reply #15 on: November 22, 2013, 05:59:07 PM »
I'm going to pass on the honda ones, not sure I even found them anywhere yet. Polished stainless with a proper anti-seize sounds like a better plan and economical knowing oem honda prices.

70CB750, please do share when you pick up the set and the anti-seize for them.

Offline cheftuskey121

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Re: Replacement case screw sets
« Reply #16 on: November 22, 2013, 06:39:38 PM »
Edward on my previous set I used the silver anti seize. No issues. Save the copper anti seize for the spark plugs and bolts that get super hot.

Offline HondaMan

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Re: Replacement case screw sets
« Reply #17 on: November 22, 2013, 08:44:16 PM »
A question about anti seize. Wouldn't that compromise the screw, sort of a lubricant acting the opposite of loctite? Wouldn't it be more like eventuallymakeloose.

No, it will hold the screws nicely, and prevent sticking at the same time. Anti-seize is not a lubricant as much as it is a preservative. Petroleum grease is much the same, and I've used it as well on case screws. When the screw is torqued to tight, the metals press the lubes out of the joint and an airtight cover results. Without air, corrosion won't start.

These screws (or maybe the threaded case holes) from Honda originally came with a white powder anti-seize on/in them. The replacement screws don't have this stuff. When we would disassemble an almost-new engine, the white stuff was everywhere, looked like talc. This stuff did not extend to the back sides of the screw heads where the closing torque is held, so over time the cases and screw heads get a little too friendly. This is often what makes them stuck if the engine is virgin, so an impact driver works well to remove them. Once removed, the threads need some sort of sealant/lube/anti-seize, etc., or else the next time around won't be easy. ;)
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Offline edwardmorris

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Re: Replacement case screw sets
« Reply #18 on: November 22, 2013, 10:13:03 PM »
Very informative as always Hondaman, just read your posts on the new valves thread, all good info! Would you recommend their MLS gasket set? Looks like it has everything that needs replacing on a rebuild.

Thanks everybody for sharing their input. I'll be going with a polished Euro style set with silver anti-seize for my K2. Getting excited, soooo close to Thanksgiving and I get to redo the engine.

Offline brewsky

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Re: Replacement case screw sets
« Reply #19 on: November 23, 2013, 01:20:01 AM »
here's a comparo on the phillips heads:
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Offline Jayelwin

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Re: Replacement case screw sets
« Reply #20 on: November 23, 2013, 06:20:35 AM »
Is all anti seize the same. Any specific brand?

Offline Jayelwin

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Re: Replacement case screw sets
« Reply #21 on: November 23, 2013, 06:21:47 AM »
And thanks for that anti seize tutorial. Now I get it. And realize I haven't been using it.

Offline RAFster122s

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Re: Replacement case screw sets
« Reply #22 on: November 26, 2013, 01:10:20 PM »
Edward on my previous set I used the silver anti seize. No issues. Save the copper anti seize for the spark plugs and bolts that get super hot.

Except in Aluminum heads or blocks...have used the copper on head bolts on aluminum block, caused it to weld itself in and broke stud a year later when it came apart for next stage of motor work.
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Offline redrider736

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Re: Replacement case screw sets
« Reply #23 on: November 26, 2013, 04:02:02 PM »
Why is the 78' CB550 the Red headed step child of the CB world of aftermarket parts ?? Can't seem to find the SS screw kits for it via ebay.
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