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Can someone please ID this head? #607671
07/07/15 10:35 pm
07/07/15 10:35 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
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Zombie  Offline OP
BritBike Forum member

Joined: May 2015
Posts: 1,459
Florida PanHandle
I just bought this on Fleabay... 83 bucks.
Can anyone ID the year range, and model from the intake manifold style?

I believe it is a 1969 Bonneville 650 but I'm not sure.
I appreciate the help. Thanks


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Re: Can someone please ID this head? [Re: Zombie] #607673
07/07/15 10:49 pm
07/07/15 10:49 pm
Joined: Jan 2007
Posts: 252
Atlanta, Georgia
Atlanta Bonnie Offline
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Atlanta Bonnie  Offline
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Joined: Jan 2007
Posts: 252
Atlanta, Georgia
I believe you're correct.... 1969
looked up your eBay completed sale, and the date stamp is 68, which makes it a 69.


Bruce


Re: Can someone please ID this head? [Re: Zombie] #607676
07/07/15 10:57 pm
07/07/15 10:57 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
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Zombie  Offline OP
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Joined: May 2015
Posts: 1,459
Florida PanHandle
Thanks Bruce. That was quick...
So I am assuming this is one of the notorious "Large Valve" heads. At least I am hoping I learned this correctly.

Looking at the casting marks, and the lip around the machined mating flange, it appears to be an unmolested head, ie: not shaved. Any second opinions on this. I get it is just an image...


Re: Can someone please ID this head? [Re: Zombie] #607814
07/08/15 9:24 pm
07/08/15 9:24 pm
Joined: Aug 2001
Posts: 7,144
Vermont
Jon W. Whitley Offline

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Jon W. Whitley  Offline

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Joined: Aug 2001
Posts: 7,144
Vermont
For $83.00, you did well......looks like a nice head. wink


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: Can someone please ID this head? [Re: Zombie] #607832
07/08/15 11:54 pm
07/08/15 11:54 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
BritBike Forum member
Zombie  Offline OP
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Joined: May 2015
Posts: 1,459
Florida PanHandle
Thank you for the re-assurance sir.

I couldn't have chosen wisely without the advice, and experience gleaned from you all here. I would have bought any shaved down, past it's useful life, piece of crapola. Mainly I learned that there is a reason for two valves, and three guides in most of the eBay heads.

There is something to be said for learning. No matter what I said in high school.

Re: Can someone please ID this head? [Re: Zombie] #608826
07/16/15 12:35 pm
07/16/15 12:35 pm
Joined: Jan 2006
Posts: 7,058
Laredo (South) Texas, USA
GrandPaul Offline
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GrandPaul  Offline
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Joined: Jan 2006
Posts: 7,058
Laredo (South) Texas, USA
I'll give you $100 plus postage for it!

You got a great deal.


GrandPaul (does not use emoticons)
Author of the book "Old Bikes"
Too many bikes to list, mostly Triumph & Norton, some BSA & European
"The Iron in your blood should be Vintage"
Re: Can someone please ID this head? [Re: Zombie] #608834
07/16/15 12:55 pm
07/16/15 12:55 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
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Zombie  Offline OP
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Joined: May 2015
Posts: 1,459
Florida PanHandle
Holy Mackerel... My bike is making me money already!!! I LOVE Triumphs!

i just got lucky on the timing for this. I must have "ask seller a question" 30 people in the past 2 months.

Trying to find late T140 rocker innards is quite another story. I found a fella with new shafts but no appropriate rocker arms yet.

I also found a common thread in sellers there (Fleabay). The ones that claim to be shops, parting out engines, and stating a specific year (on rockers) are mostly wrong on the claim. When you contact them for verification they will not reply, and hold out for another buyer.
I have found MANY T140 complete boxes that claim to be 76/77/78/80, and they are all the older rockers (early 70's) with no oil reliefs in the arms.
I've actually begun to report sellers that do not reply in the time stated.

Just to finish the thought... My plan is to use the later innards (76/77/78), and the early boxes (67/68/69/70) as recommended here on the forum, to take advantage of the improved oil delivery. I thought I liked the newer boxes but decided I like the old style better.

I'll consider your offer Grand Paul... Done considering, not! Thanks tho :-}

Re: Can someone please ID this head? [Re: Zombie] #608844
07/16/15 2:11 pm
07/16/15 2:11 pm
Joined: Dec 2013
Posts: 4,294
ohio, usa
kevin roberts Offline
fefsa
kevin roberts  Offline
fefsa

Joined: Dec 2013
Posts: 4,294
ohio, usa
the newer boxes require you to preplan your headbolts and head steadies as well


"Are bikes so nice as all that?" asked the mole, shyly...

"Nice? They're the only thing," said the Water Rat Solemnly, as he leaned forward on the handlebars. "Believe me, my young friend, there is nothing -- absolutely nothing -- half so much worth doing as simply messing about with bikes."
Re: Can someone please ID this head? [Re: Zombie] #608876
07/16/15 5:28 pm
07/16/15 5:28 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
BritBike Forum member
Zombie  Offline OP
BritBike Forum member

Joined: May 2015
Posts: 1,459
Florida PanHandle
Yes sir. I've been advised of this. I did consider the newer boxes, and the associated hardware but I have since changed my mind, and prefer the look of the older boxes.

I will be using the original style (1967 - 1970) boxes with the newer style (1976 - 1979) shafts, and rockers. In fact I am strongly considering modifying the rockers further to accept the drilled ball ends, and drilling thru the later rockers to deliver oil directly from the grooved shafts.

Here comes the sacrilege... I'll be running the Morgo rotary, and a pressurized rocker system. My pressure relief will be in the remote filter rather than on the cases, and all the oil lines will be hard plumbed (heat sink-ed stainless) with shock relief fittings.

Over kill? Maybe... so are (w) + rated tires on a street bike.
If nothing else it will be a fun build.

Re: Can someone please ID this head? [Re: Zombie] #608886
07/16/15 6:15 pm
07/16/15 6:15 pm
Joined: Jan 2014
Posts: 2,111
South cone
R
reverb Offline
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reverb  Offline
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R

Joined: Jan 2014
Posts: 2,111
South cone
...hello Zombie, 79 and up have different valve adjusters with Allen heads; in my opinion, easier and nicer.
You cannot put these ones in previous (late too) threads.

.You almost robbed the guy ha ha. I do not remember right now but I paid between 150-240 there in USA, for 76 head then another 450 to send it to W White to put new valves, guides etc. Then International shipping and customs expensive taxes.; so around 1100 or more.

Re: Can someone please ID this head? [Re: Zombie] #608898
07/16/15 7:12 pm
07/16/15 7:12 pm
Joined: May 2015
Posts: 1,459
Florida PanHandle
Zombie Offline OP
BritBike Forum member
Zombie  Offline OP
BritBike Forum member

Joined: May 2015
Posts: 1,459
Florida PanHandle
I just got lucky Reverb.
Right auction (12 bidders), and a pant load of nervous as the seconds ticked away. $151.51 was my "Max Bid".
I think it was the fact that the head was left as it was pulled, and the rest of the bidders (that night) were fighting over the shinny clean (shaved, and stripped) heads.

I do get the Allen head adjustments are nicer. They are easier to grab at the angle you need. Also the later boxes are easier to gain access with any tool of choice. I've come to grips with this.
It's a visual thing, and trade off. I'm certain I will find a way to deal/live with this choice.

As far as what it will cost when the head is done as I want??? whatever... Most likely very close to what you spent. I'll burn that bridge after I cross it. Seeing smoke in the rear views tells me where not to go again.

You know the drill. We only live once (that we can recall).


Moderated by  Alan_nc 


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