SOHC.co.uk Forums > Project Board
Honda CB750K5 Restoration by Royhall
royhall:
--- Quote from: Trigger on July 16, 2022, 12:32:26 PM ---How are you going to do the fly wheel torque up with the top end on ? This should be done by putting a bar through the con rod small ends to lock the engine ;)
--- End quote ---
That would be with my large strap wrench around the rotor Trig. That's the way I do it when I change starter clutch rollers. Works okay. Just out of interest, how do you retighten the rotor after a starter clutch change. Surely you don't take the top end off?
The engine has gone in okay with item 3 pre fitted.
Trigger:
I use a locking tool and a torque air gun ;)
royhall:
A long awaited large box has arrived today from Colin at Predator Motorsports. This was ordered last November (2021) with a £500 deposit and has just arrived (July). It contains one replica CB750K5 exhaust system. I was just beginning to get a bit concerned about it so today is a good day. You will notice that it's in a CMS box, that's due to Colin getting them made in Japan then supplying the big retailers such as Silvers and CMS. So it could just as easily been in a Silvers box. The delay was due entirely to shipping costs after the pandemic with the price of containers going through the roof. To be fair to Colin, he honoured the price given when ordering even though costs had increased so it came in cheaper than Silvers or CMS, but not by much.
[ Guests cannot view attachments ]
I have started preparing for the engine install into the frame. I cant get a bike lift into the limited space in the garage, so as I normally do, the bike will be built up on the same adapted beer crate that I have used for all my previous builds. As every frame is different the crate needs changing to suit. On my 350F build I had to add a step to the top so the frame would sit straight, this time it needs a cut out to clear the side stand bracket. Three pieces of roof tile batten and a piece of plywood do the trick.
[ Guests cannot view attachments ]
A bit of old carpet tacked to the top prevents the powder coating on the frame from being scratched.
[ Guests cannot view attachments ]
Just as a precaution, I usually cover the frame in masking tape to prevent any dings whilst the engine is going in. The frame usually gets a gentle knock or two as the engine is a really close fit in the frame.
[ Guests cannot view attachments ]
When I built the Black Bomber I laid the engine down on it's side on the workbench and lowered the frame over the engine and bolted it in. Then stood it upright on the bench and lifted it down onto the waiting beer crate myself. With the 750 there is no way I am going to attempt this myself as the engine is just too heavy for one (unless your an ape with hands like shovels). So I will wait until a mate calls round to help on Tuesday night.
JamesH:
Great progress Roy. Sorry I’ve not chimed in much here - but looks like you’re doing a superb job mate
Skoti:
Hi Roy,
Some photos of my DIY method of refitting the engine.
Slide the bike frame across the floor to the engine and adjust supporting straps to the correct height accordingly.
(I nicked this idea from the USA SOHC web site)
https://photos.app.goo.gl/bT5X3iyGV89S47w26
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version