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Messages - Brett72

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1
CB750 / Re: long bolts in crankcase
« on: March 25, 2021, 08:42:29 PM »
Thanks Jedi, thats great to know

2
CB750 / Re: long bolts in crankcase
« on: March 25, 2021, 08:08:35 PM »
The thread in the top crankcase for bolt no.2 in the picture at the start of this thread

3
CB750 / Re: long bolts in crankcase
« on: March 25, 2021, 07:51:21 PM »
I have used helicoils before and they are obviously the cheaper option but will they withstand the bolts being torqued into them?

4
CB750 / Re: long bolts in crankcase
« on: March 25, 2021, 04:50:49 PM »
Thanks for the replies.  As it stands on further investigation it looks like the threaded hole in the top half of the crankcase has had it :-[
Has anyone ever tapped it out to an M10? If so did it go ok?
Thanks in advance

5
CB750 / Re: long bolts in crankcase
« on: March 23, 2021, 10:19:29 PM »
Thanks for the advice

6
CB750 / Re: long bolts in crankcase
« on: March 23, 2021, 10:08:01 PM »
Great idea Jedi. Thanks for the idea. I will give it a go in the morning

7
CB750 / long bolts in crankcase
« on: March 23, 2021, 09:12:45 PM »
Hi, can anyone tell me if they have ever fitted a slightly longer bolt in the crankcase. I was just torquing down to do a plastigauge test and what is no.2 bolt on the diagrams will not tighten down. The bolts are M8 x 140 1.25 pitch. If i put the bolt in the top half of the casing without the bottom fitted it bites fine and i think it would torque down ok.  I was thinking about putting a bolt 145mm long in and see what happens. Has anyone got any thoughts on this? Thanks in advance

8
CB750 / Re: CB750 K5 Dilemma
« on: January 25, 2021, 02:44:14 PM »
The medium used is a soft silicone apparently and they are aware about the oil ways

9
CB750 / Re: CB750 K5 Dilemma
« on: January 25, 2021, 11:09:47 AM »
Why do you think the cases are scrap if they have been vapour blasted?

10
CB750 / Re: CB750 K5 Dilemma
« on: January 24, 2021, 09:48:12 PM »
The bike i got rid of was a 600 SRAD and i replaced with an xjr1300sp. I still have that and love to do big trips on it which i used it for a 180 mile commute. The SRAD if i went back to it would be a small fun project and great fun to have small ride outs or even track days.

11
CB750 / Re: CB750 K5 Dilemma
« on: January 24, 2021, 09:33:17 PM »
Thanks Jedi. it is sound advise like that that i need. I am slowly coming to the fact that i might have to let this go.

12
CB750 / CB750 K5 Dilemma
« on: January 24, 2021, 05:19:48 PM »
Evening all. I am in a bit of a dilemma. I bought a K5 frame and lots of bits. I have the title and the nova certificate but it is not UK registered yet. I have fully stripped the engine down which I have found out is a K6 and the case is away being vapour blasted.
My dilemma is whether or not to carry on with the project or sell it as it is with the bits I have already done to it and purchase a bike that I have had in the past that really has me interested.
Any thoughts?

13
CB750 / Re: k6 Gaskets
« on: January 12, 2021, 08:31:02 PM »
Thanks Julie. How much are we looking at for the seals? Thanks

14
CB750 / k6 Gaskets
« on: January 12, 2021, 07:11:53 PM »
Hi all, can anyone recommend where to get a full set of gaskets? i am replacing every one and all the oil seals/o rings throughout the whole engine. Any recommends would be greatly appreciated. thanks

15
CB750 / PD Carb swap
« on: December 22, 2020, 09:08:36 PM »
Anyone interested in possibly swapping or PX a set of PD41 carbs for a set that will fit a 750 K6 engine? I dont know anything about the history of them. The bike (or bits of a bike) i bought is a K5 frame and a K6 engine.   

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