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JAP V twin
#772623 05/04/19 10:22 am
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I'm going to start building another bike..Would really like to have a JAP ohv V twin or something similar...Is it actually possible to find a complete old engine without paying a king's ransom...?


79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
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Re: JAP V twin
Hillbilly bike #772629 05/04/19 12:40 pm
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Re: JAP V twin
Hillbilly bike #772635 05/04/19 4:00 pm
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Always wondered what JAP stands for.......... ? I see'em on Morgan's right?


Down to 1 BSA, 2 Triumphs, 1 '56 Chevy
1 '65 XLCH, Hernia Gift, on the way to Japan!
Re: JAP V twin
Hillbilly bike #772636 05/04/19 4:06 pm
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That's very impressive !




Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project
1971 BSA A65 650 - Project
1972 Norton Commando 750 "Combat"

Re: JAP V twin
KC in S.B. #772638 05/04/19 4:17 pm
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Originally Posted by KC in S.B.
Always wondered what JAP stands for.......... ? I see'em on Morgan's right?


JA Prestwich.....................................I am really looking for a Brit factory made V twin ,not an one of a kind engine..


79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
Re: JAP V twin
Hillbilly bike #772645 05/04/19 6:51 pm
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Originally Posted by Hillbilly bike
I'm going to start building another bike..Would really like to have a JAP ohv V twin or something similar...Is it actually possible to find a complete old engine without paying a king's ransom...?


An original 20's OHV JAP V twin will be £20k or more. I think a 30's one may be a bit less. However you can buy a new one from Cameron:

http://cameronracingengines.com/#home

Or build a new one yourself using castings from MFC (which is where Cameron buy their castings from, note the casings are un-machined)

http://www.mfcpatterns-castings.co.uk/

John

Last edited by George Kaplan; 05/04/19 6:51 pm.
Re: JAP V twin
Hillbilly bike #772648 05/04/19 7:53 pm
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Way out of my price range....I'll assume that any of the other Brit V twin engines would also be a bit expensive?


79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
Re: JAP V twin
Hillbilly bike #772654 05/04/19 8:38 pm
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The guy who makes the musket? Ok so not British but sort of?

Re: JAP V twin
Hillbilly bike #772658 05/05/19 12:07 am
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I was thinking more like a BSA V twin...It has to be real vintage......I believe anything will be too pricey for me....Time for plan B


79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
Re: JAP V twin
Hillbilly bike #772664 05/05/19 12:35 am
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[Linked Image]


every day you do not take a chance is a day of your life that you will never get back.
Re: JAP V twin
Hillbilly bike #772669 05/05/19 1:06 am
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Originally Posted by Hillbilly bike
I was thinking more like a BSA V twin...It has to be real vintage......I believe anything will be too pricey for me....Time for plan B

I'm with you, but I would settle for a DBD34 motor - - or similar. I know of some old vintage Triumphs that need some competition!
Tom

Last edited by koncretekid; 05/05/19 1:06 am.

Life's uncertain - go fast now!
Re: JAP V twin
Hillbilly bike #772702 05/05/19 1:23 pm
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This project is a 1930's look hot rod bike....tall skinny tires, flat side tank and for sure a vintage looking V twin...Harley and Indian flat heads are quite expensive and realistically it seems any Brit V twins are even more expensive..An Iron head Sportster engine has the look with tall narrow cylinders and pushrod tubes, and a complete bike with title can be had for $ 2000...But only if nothing else is available...


79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
Re: JAP V twin
Hillbilly bike #772707 05/05/19 2:15 pm
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Growing up in my early motorcycling years in UK in the early/mid 1960s no one wanted "old" bikes.
Pre war bikes including V twins were sold for very low prices--- you could get one for 25 GBP--about $40.
I remember in 1963 I bought a Vincent Black Shadow for 50 GBP--about $70!
Then as an impoverished student I sold it 6 months later for the same price in order to eat!
But that was 50+ years ago and things have changed a lot.
If you can get an iron head Sportster engine for $2K and are happy with that as the basis for you special then my advice would be to go for it.
I was at an AMCA swap meet in PA last weekend and the prices for that sort of stuff were eye watering.
Best of luck with the project!

Re: JAP V twin
Tridentman #772712 05/05/19 2:53 pm
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Originally Posted by Tridentman
Growing up in my early motorcycling years in UK in the early/mid 1960s no one wanted "old" bikes.
Pre war bikes including V twins were sold for very low prices--- you could get one for 25 GBP--about $40.
I remember in 1963 I bought a Vincent Black Shadow for 50 GBP--about $70!


If only one could have hindsight! A now deceased biking acquaintance relaid a similar story to me where he turned down a Series A Rapide that was in poor condition in the 1960's for the sum of £40.

John

Re: JAP V twin
Hillbilly bike #772717 05/05/19 4:12 pm
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Yes--good stuff hindsight!--very rarely wrong IME!

Re: JAP V twin
Hillbilly bike #772746 05/05/19 9:04 pm
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Didn't JAP engines power machines other than motorcycles? Maybe you can find one cheaper at a lawnmower or cement mixer meet!

Re: JAP V twin
J. Charles Smith #772750 05/05/19 9:38 pm
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Originally Posted by J. Charles Smith
Didn't JAP engines power machines other than motorcycles? Maybe you can find one cheaper at a lawnmower or cement mixer meet!



A JAP V twin powering a lawnmower? Ok.... crazy

JAP did make WW1 aircraft engines like this air cooled V8 in a very unique vehicle, a true internal combustion experience and not the typical overdone bloated car with an aircraft engine.This car is so me....I might just build one of my own.

Cyclops



79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
Re: JAP V twin
Hillbilly bike #772753 05/05/19 9:55 pm
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The water cooled JAP engine in Morgans are not as pricy as, say a KTOR or JTOR. I know of someone who took a water cooled bottom end and put a pair of Matchless top ends on it.

John

Re: JAP V twin
Hillbilly bike #772759 05/05/19 10:35 pm
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WOW!!!--HB--that is quite a car.
Just right for an individualist---that includes I think all Brit bikers!

Re: JAP V twin
Hillbilly bike #772761 05/05/19 10:50 pm
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Originally Posted by Hillbilly bike


JAP did make WW1 aircraft engines like this air cooled V8 in a very unique vehicle, a true internal combustion experience and not the typical overdone bloated car with an aircraft engine.This car is so me....I might just build one of my own.

Cyclops



I think that is me too !! I hadn't been considering such a project but I might have to start contemplating such an endeavor...more reasons to spend money...thanks Tony !!





Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project
1971 BSA A65 650 - Project
1972 Norton Commando 750 "Combat"

Re: JAP V twin
Hillbilly bike #772763 05/05/19 11:31 pm
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While we are off topic, I built this car from tubing and a pile of parts about 5 years ago, 1930's Ford running gear and other parts from Jeeps and Toyota....The body is hanging on the wall in the background..

[Linked Image]

A few months later,more progress and a 70 T120 is getting built at the same time...Took about 8 months from start to finish working at it part time. My race bike rider has the car now...It just sits ....

[Linked Image]

I need to find an unusual engine..A V-8 because this is America... grin

And this is in my opinion the absolute essence of internal combustion...Flames, sparks, smoke and noise, a literal beast...





79 T140D, 96 900M Ducati ....On a bike you can out run the demons..
The Beast of Turin
Hillbilly bike #772765 05/05/19 11:55 pm
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1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
Re: The Beast of Turin
Hillbilly bike #772785 05/06/19 3:03 am
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Well'ard Rocker
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Who would DARE drive that thing at anywhere near the speed that that motor would push it?

Looked like it was going 60 MPH with the engine barely off idle ....

Lannis


Do dogs see police dogs and think "Oh no it's the cops!"?
Re: JAP V twin
Hillbilly bike #772786 05/06/19 3:06 am
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How about this? Link
[Linked Image]
[Linked Image]

Re: JAP V twin
Hillbilly bike #772799 05/06/19 6:00 am
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Old Hens have a pretty mild output, but make charming old vintage bikes. ??
3 speed crash box, no front brake, foot clutch and wheelbarrow handlebars.
That one's had the gearbox cut off, which will cause all sorts of headaches..
Unless you put it in an aeroplane = eeeek !

Hush my mouth, but have you considered something like a Sportster or a Buell in a featherbed.
Someone locally here was doing a thriving business turning out 'Sportons', at quite reasonable prices.
(Old sportsters don't go for a great deal).
And they can be tweaked to go ...
Put JAP decals on the tank, most punters won't know the difference ??

[Linked Image]

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