Author Topic: Stainless steel engine bolt replacements  (Read 558 times)

Offline Oddjob

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Stainless steel engine bolt replacements
« on: August 26, 2019, 01:40:01 PM »
I have located a place where I can get replacement stainless steel bolts for the engine cases. I used the same place back in the 80s to replace all the engine hanger bolts including the step bar bolt and the large bolt used just above it at the upper rear of the engine. These bolts are still in perfect condition over 30 years later, no rust at all.

When I was rebuilding the engine of my 500 back in the mid 80s he didn't do a lot of the bolts he's now making, like the 10 8x100 bolts used to seal the crankcase halves together, he now does those and I ordered a single one to see what it looks like and it's perfect, I've now asked him if he can reproduce the large thick washers that these and the cylinder head nuts use under them, they are 8 x 14 x 3 I think (could do with some measuring one to confirm that as I haven't yet dismantled the engine).

If he comes back with a yes then would anyone else be interested?

This means bright shiny bolts without having to resort to having them BZP plated, no maintenance, will still look perfect in another 30 years and better in appearance. The trouble with BZP bolts/nuts is that they are designed to be sacrificial, that means they dull over time as the zinc plate sacrifices itself in order to protect the steel underneath, not knocking these bolts etc, that's what they are made to do and they do it really well. I however, prefer to just fit and forget.

There will be members on here aghast that I intend to replace standard Honda bolts/nuts with alternatives, those who insist on replacing the JIS screws in the casings with new JIS screws, not got a problem with that, if that floats your boat then go for it, I prefer to replace things I don't like with things I do like and I prefer to use stainless wherever possible.
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Offline philward

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Re: Stainless steel engine bolt replacements
« Reply #1 on: August 26, 2019, 08:58:20 PM »
Ken, I used stainless crosshead cover screws in the covers - think they were JIS and from megapack on ebay
Current Bikes:-
Kawasaki ZZR1100D3
Honda CB750K2
Honda CR750 Replica
Kawasaki ZZR250 1990 Project (Not started)
Honda CB500K2 (1973) Project


Offline Oddjob

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Re: Stainless steel engine bolt replacements
« Reply #3 on: August 26, 2019, 10:47:26 PM »
Don't like socket bolts Menno, I prefer to use the type of bolts used by the current Hondas in their casing, 6mm bolt with 8mm head.
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Offline Trigger

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Re: Stainless steel engine bolt replacements
« Reply #4 on: August 26, 2019, 10:57:41 PM »
I have a supplier that does that type in chrome Ken  ;)

Offline Oddjob

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Re: Stainless steel engine bolt replacements
« Reply #5 on: August 26, 2019, 11:04:57 PM »
Interesting. Problem with chrome though is that it chips at the corners and then it peels off. At least stainless doesn't do that. Probolt do them in stainless but damn are they dear.
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Offline Trigger

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Re: Stainless steel engine bolt replacements
« Reply #6 on: August 26, 2019, 11:15:33 PM »
Everything from probolt is bloody expensive. I thought you were on about 80's and 90's Honda bolts

Offline Oddjob

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Re: Stainless steel engine bolt replacements
« Reply #7 on: August 27, 2019, 04:45:24 AM »
I am, Probolt do a pretty good copy in stainless, I have them on my CB1300 engine. Not an exact replica but close.
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Offline eight0

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1x 1976 CB550F1
1x 1977 DT250
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1x 1978 CX500

Offline Trigger

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Re: Stainless steel engine bolt replacements
« Reply #9 on: August 27, 2019, 05:08:20 PM »
Anyone tried buying from this site? https://www.mrmegapack.co.uk/a2-bolt-nuts--phillip-screw-megapack---honda-cb550-26994-p.asp


Yep, the sellers name is Andy. And if you enter mega5 at check out you will get a extra 5 percent discount  ;)

Offline Laverda Dave

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Re: Stainless steel engine bolt replacements
« Reply #10 on: August 27, 2019, 08:59:33 PM »
He's very helpful. I bought a full bike set for my 400/4 and some were of the wrong length. After contacting with a list of what was incorrect and what they should actually be he sent the correct ones by return with an apology. He does state on his website if anything is incorrect to contact him first. This enables him to update his database to ensure future sets are correct. Can't get better really although I did spend hours polishing the heads!
1976 Honda 400/4
1981 Honda CB250RSA
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1982 Laverda 120 Jota
1924 Triumph 550SD
2012 Stanley Battery Drill

Offline philward

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Re: Stainless steel engine bolt replacements
« Reply #11 on: August 27, 2019, 10:45:26 PM »
As per my earlier post, I've used megapack and good stuff - I short ordered and contacted him - he sent the increased order and said just paypal me later. Great service.
Current Bikes:-
Kawasaki ZZR1100D3
Honda CB750K2
Honda CR750 Replica
Kawasaki ZZR250 1990 Project (Not started)
Honda CB500K2 (1973) Project

 

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