SOHC.co.uk Forums > CB750
Battery
Martin6:
--- Quote from: Pauarc on September 27, 2023, 04:33:34 PM ---I always use a battery pack for more power when running a compression test post a picture of your leak only in Totham if you need a hand
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The front head bolt, just in front of the head cover, visible in-between exhausts 2 and 3, has sheared, by the look of it. It's too long to pull out without removing the head cover. Also, the head bolts that can be checked inside plug holes 1 and 4 were a bit loose. I think the previous, previous owner had the head off (and possibly went further) for new rings. But didn't torque it up properly, putting too much force on that bolt.
I'm not burning oil, but the head join is generally oily and misting the bike nicely. There's a few drips as soon as I stop and put it on the sidestand, as it runs off the fin. Plug no.1 is sooty and I think it's probably the leaky head.
I've been putting off dealing with it, to enjoy the bike this summer, but also dreading getting the motor out of the frame. Never done it before! Also, undecided how far to go. A 40,000 mile motor with no history. I probably ought to check the condition of everything, but it seems to run fine until no.1 plug soots up. So I'll probably limit it to a visual inspection of the bores and cam and a de-coke as needed. Then do my best to put it back together oil tight.
Martin6:
--- Quote from: Nurse Julie on September 27, 2023, 05:12:30 PM ---
--- Quote from: Martin6 on September 27, 2023, 04:57:21 PM ---Oddjob, I bought the Powerline. It Quotes a CCA rating of 200A. https://www.tayna.co.uk/motorcycle-batteries/powerline/yb14l-a2-agm/
Be a bit annoyed if that's inaccurate.
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Thats what we use on all our 750/4's Martin, from Tayna😊😊😊
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Oddjob:
Different battery Martin. I did say for the 500/550 as the variants in the 750 range could mean that different types were fitted to different models, like between the F and the K for instance. If it says 200 it will mean 200. Reading between the lines it looks like Powerline may be a decent battery. Not sure who makes them though, looks to be Tanya itself.
Martin6:
Battery arrived lunchtime, less than 24hrs after the order was placed, with 'standard' delivery. Impressive.
Bike strip down has commenced. I feel like I'm committed now!
McCabe-Thiele (Ted):
--- Quote from: Oddjob on September 27, 2023, 05:52:17 PM ---Different battery Martin. I did say for the 500/550 as the variants in the 750 range could mean that different types were fitted to different models, like between the F and the K for instance. If it says 200 it will mean 200. Reading between the lines it looks like Powerline may be a decent battery. Not sure who makes them though, looks to be Tanya itself.
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I fitted a Powerline to a previous car as it had the highest specification (Ah & cca)for the casing size at a competative price.
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