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1981 XV750 project

Chop it, rake it, slam it, build it for show.
New parts, old parts, built from scrap. [Hammered out of bare stock & welded with sweat.]
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1981 XV750 project

PostAuthor: el gringo » Mon Feb 12, 2018 6:08 am

Morning guys so I've just bought an old xv750 this Saturday, apparently she as been sat in this chaps shed for 18 years and has basically been forgotten about... Untill now
I will figure out how to upload some pics now and let you have a looksie, it seems he thought it would be a great idea to paint the whole engine in silver with what i can only assume was a yard brush, difficult to see on the pics..
So yesterday i whipped the back end off, probably going to cafe racer the old girl, on a tight budget so won't be too fancy (cool tho).
Defo needs a new battery, probs a real small one so i can hide it somewhere, any info on this would be cool, Also the pre owner said he thinks the starter motor was shot, Any good upgrades about?
Other than that she is a bit tatty but hey....its a project right :bg:

https://imageshack.us/i/pmzMWUvdj

https://imageshack.us/i/pnsVmofYj

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Re: 1981 XV750 project

PostAuthor: faffi » Mon Feb 12, 2018 8:48 am

:VTF:

For these old generation one machines, you want a strong battery for reliable starting. I have a later 1100 and a small-ish lithium battery with 240CCA that is barely adequate, saving itself by having an engine that fires almost instantly. But it cranks very, very slowly compared to what it did with the bigger standard battery. Considering the weakness of the earlier starting system, you definitely do not want a slow cranking engine.
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Re: 1981 XV750 project

PostAuthor: el gringo » Mon Feb 12, 2018 10:28 am

Hey Thanks for that, kinda confirming what i thought.. I'm guessing a battery for an 1100 would be roughly the same size?
The exhaust is also shot so i'm real tempted to order some bends and have a go myself, I'll probs just tack them and then get someone else to weld them..
Thanks dude

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Re: 1981 XV750 project

PostAuthor: faffi » Mon Feb 12, 2018 5:01 pm

The 1100 can take a little bigger battery, better stay with the stock size for the 750 to prevent having to modify the battery bracket. Unless you want to fit a new box? You can then get a bigger capacity sealed battery that is cheaper than the special sized stock item. Something like this
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Re: 1981 XV750 project

PostAuthor: el gringo » Tue Feb 13, 2018 1:03 pm

Thanks for that, think i'm going to have to do a lot more research as i would like to go a little smaller.
What would you recommend regarding the starter motor? Last owner said he thinks it was shot, probs why its been sat untouched for 18 years!.
Thanks for your advise its much appreciated :cl:

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Re: 1981 XV750 project

PostAuthor: faffi » Wed Feb 14, 2018 2:17 am

The best would be to upgrade to the better starter system found on all 1000cc and 1100cc engines, including the TR1. All 750s had this from 1986 on, some as early as 1984. However, it is likely that your engine is not prepared to take this system - you will have to drill the engine block, most likely. There are plenty of threads on this forum debating the starter upgrade.

Failing that, you should go for a good quality 4-brush starter and make sure that your gears for the starter are all in good condition. Fit a new "brake" clip and consider omitting the return spring, though the latter is debated. Again, plenty of topics dealing with this.
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Re: 1981 XV750 project

PostAuthor: el gringo » Wed Feb 14, 2018 1:59 pm

Thanks again for your advise..
I've just read through some of the threads, I've got headache already!
Just had a sneeky look on ebay and the shopping list seems to be a tough one!
May just have to be the 4 brush starter motor and a car battery :bg:

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Re: 1981 XV750 project

PostAuthor: bbqb4racin » Wed Feb 14, 2018 7:03 pm

OEM battery vs the replacement battery on my 920. Worth the relocation effort and cranks the engine with no problems! Why lug a car battery around?

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Re: 1981 XV750 project

PostAuthor: dazthebiker » Thu Feb 15, 2018 3:01 am

What battery is that and whats the rating?

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Re: 1981 XV750 project

PostAuthor: bbqb4racin » Thu Feb 15, 2018 8:03 am

dazthebiker wrote:What battery is that and whats the rating?


https://www.ballistic-batteries.com/product_info.php?cPath=141&products_id=427
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Re: 1981 XV750 project

PostAuthor: el gringo » Thu Feb 15, 2018 1:55 pm

Thanks for that dude, I've been looking at these but bugger me.....£180! There is no way i'm telling r lass about this possible purchase..
I think its really the only option tho! Oh bugger..
We are currently restoring an old Datsun 240z at the minute so thats swallowing a fair bit of cash.. Hey Ho
Regarding the starter motor, Swapping to a 4 bush, would that be a short shaft?
Thanks guys

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Re: 1981 XV750 project

PostAuthor: Chevril » Sun Feb 18, 2018 3:36 pm

Hi, fellow UK 750 owner... just picked mine up a few weeks back... same idea.. cafe racer it.

That battery looks bloody excellent! tiny and powerful.... bit pricy though!

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Re: 1981 XV750 project

PostAuthor: el gringo » Tue Feb 20, 2018 2:59 pm

Hey dude yeah a very lot pricey! Its my birthday so i thought bugger it and ordered one of these..(if the link works)
https://www.amazon.co.uk/Battery-Tender ... B00F9LPJ8S

Just got some clip ons, new 4 brush starter motor, clutch lever master cylinder n front brake, GSXR rear sets and hopefully I've just
struck a deal on an old Benelli tank petcocks and cap.. I know the Benelli tank as been abused n used on more xv's than you can shake a stick at but i really like that look plus ive got a reet deal, fingers crossed..
I will get some pics up next week of the progress..
The swingarm was bent n abused so i found a second hand one, going to need new dust caps/covers, anyone point me in the right direction to get some, pref UK if possible..

Thanks

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Re: 1981 XV750 project

PostAuthor: Flyingdog » Tue Feb 20, 2018 3:29 pm

el gringo wrote:Swapping to a 4 bush, would that be a short shaft?


If it hasn't be upgraded to Gen II /bendix style starting system...ya, short shaft.
You may already know, but .....
Battery Tenders are some of the best on the market. Just be sure to heed all their instructions. Be absolutely sure your charging system is at it's tops. Those LiFePO4 batteries will not come back if discharged too deeply if the charging system takes a dive. They're little more forgiving than a LiPo or Ion battery. A good smart charger is a good idea, too. You can use a acid battery charger, but not on automatic. They don't take kindly to overcharging.
Li batteries are not tough, once you get the hang of their little idiosyncrasies. Battery Tender Juniors are cheap and last forever. And they got all the goodies in them so it's pretty much a no-brainer to use.
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Re: 1981 XV750 project

PostAuthor: el gringo » Tue Feb 20, 2018 3:40 pm

Great info cheers dude..
Yeah i did the homework on the best starter thanks.
Regarding the charger, is the Battery Tender Junior the way to go then?
Thanks dude

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Re: 1981 XV750 project

PostAuthor: Flyingdog » Tue Feb 20, 2018 4:53 pm

For my money..you'd never go wrong. Low amp charge is perfect, plus their circuitry does read your battery and adjusts to what is needed. AKA: Initialization, Bulk Charge, Absorption Mode, Float Mode. Which is what any battery needs. And..you can leave them hooked up forever. Which you can't do with alotta other trickle charges. Yes it's low amp (750mah), some say it would take forever to charge..really not true. Beside "usually" your charging at home and time is not a big factor..Coarse, that's just "my" opinion. I've always been amazed how cheap they are. Another thing I like bout the Junior, if you ever buy a battery, you can take it home and do it yourself and "not" rely on the "Salesman" to charge it.. Who have be known to screw a new battery before you even get it, cuz they have no clue what they're doing. Besides selling you a battery. :;: I've been using them forever and some of my acid Yuasa's have lasted for 10yrs. Not trying to come off preachy or sales pitchy, batteries have also been at the top of the list for me. If it weren't for the battery..you're pushing. I even use them on my big arse Optima deep cells.
http://www.batterytender.com/faq/products
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Re: 1981 XV750 project

PostAuthor: el gringo » Wed Feb 21, 2018 2:09 pm

Thanks again for that, Just been on ebay and got myself one £38 very happy with that.
Cheers dude...

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Re: 1981 XV750 project

PostAuthor: el gringo » Tue Mar 13, 2018 2:19 pm

Just a quick update on progress..
Found a 2nd hand swingarm, bit rusty so rubbed it down and sprayed it textured black, along with the engine.
New 4 brush starter fitted, new filter and oil in. Still waiting on the battery (tender) to arrive! So....
Now on with fitting steering bearings and brake seals..
Whilst i'm doing that i'm going to sit the tank in position and make a sub frame.
Also just fitted some rearsets, just goto figure out the linkage! Could be an headache?
Fingers crossed it will be a productive weekend..
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Re: 1981 XV750 project

PostAuthor: el gringo » Thu Mar 15, 2018 2:22 pm

Been waiting for my new Battery Tender for weeks now, sent a message to complain and they sent a message back saying sorry we dont have any in stock!.. Turns out these battery's and others are not allowed to be shipped by plane! Looks like no one is selling these in the UK..

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Re: 1981 XV750 project

PostAuthor: el gringo » Thu Mar 22, 2018 2:41 pm

New Battery came this week so i'm going try and fabricate something so i can hide it.
Just thought i would try a quick mock up with the tank and seat loop, hopefully i will get this complete this weekend.
Just need to learn to weld! Gonna youtube it tonight..
At some point i would like to make my own exhaust system, until then doe's anybody have a full system for sale?
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