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J.A.P. UCZ . 600 .

Re: J.A.P. UCZ . 600 .

Postby Mark » Wed Apr 16, 2014 4:54 pm

are you planning on installing this engine in a bike?

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Re: J.A.P. UCZ . 600 .

Postby Matt Spencer » Thu Apr 17, 2014 4:01 am

Its a bit heavy for an aeroplane . :D
The Japanese response to ' styling ' , was to add more .
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Re: J.A.P. UCZ . 600 .

Postby Matt Spencer » Thu Apr 17, 2014 4:31 am

" Think you're going to find the whole thing is not up to a ton. "

Vee Haff our methods , :twisted: Image

http://www.ebay.com/itm/Harley-Davidson ... 7675.l2557 crikey , will have to flog this while its still there . :?

Image :? Image

Image

Image

Image
http://www.landracing.com/forum/index.php?topic=6173.0

Image

Just researhing its potential . :) If the big end / crank were the same specs as the ohv 1000 , it might take a bit of stick . But it looks like it isnt .
Undertakeinfg another project which is more purrformace biased . This will be dormant for a while , though Id better get up the way and get what
nos spares are available .
YES , Mark - cant think of a reason why it wouldnt , will wait and see if a 16H frame and Webb Girder assy fall out of the sky on me . May well go the way
of the Triton though , home build widelineish with Tri 68 swing arm , with forks & brakes on the front .

Early Classic Raceing story in N.Z. , where the ' in ' set required puka works racers , was a Lad with a 741B , with annual improvements over 5 years had it leading the works racers ,
whereupon it Grenaded spectacularly reduceing itself to scrap entirely . So , while 30 horse / the Ton may be available , supercharged nitro burning tyre shredding action is unlikely .
Though Phil Irvine wrote a artical on supercharged rooadsters , this is unlikely also . Unless one of these falls out of the sky also . Though those Kompressor mercs could end up in the
scrap yard & it would be one way to get a S.V. to breath .
Just fell over a suitable muffler in the workshop , so thats set aside , anyway .
One of the old positive stop foot shift boxes & a Ridgid frame would be a start , We Shall See .
The Japanese response to ' styling ' , was to add more .
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Re: J.A.P. UCZ . 600 .

Postby Matt Spencer » Thu Apr 17, 2014 5:34 am

Ican , Ican , i know I can . :x

Image
CWG 'Bill' Lacey on Aug 1, 1928, after setting a World's Record at 103mph for one hour on his 498cc Grindlay-Peerless JAP
crikey , this is Good . Image
Image
I always knew What I Needed , was a Grindley Peerless . :wink: :? :shock:

http://thevintagent.blogspot.com.au/201 ... fford.html Bit of a change from whats in the showroom today . :roll:

other :wink: Image


Theresa Wallach. This picture was taken in 1939 after she had hired Francis Beart's 350cc Brooklands track machine to earn herself a Gold Star at 101.64mph
Image
Will a 600 S.V. match a 350 s.o.h.c. :)

Ah , this is more like My Muffler : :oops: Image

" In 1927 Bert le Vack broke the 100 miles per hour (160 km/h) record at Brooklands on a 500 cc New Hudson. " That Chap just seems to get EVERYWHERE . :o
The Japanese response to ' styling ' , was to add more .
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Re: J.A.P. UCZ . 600 .

Postby Matt Spencer » Thu Apr 17, 2014 6:46 am

Image
New Hudson 500sv Brooklands Racer Baujahr 1925 Image

heres a UCZ Cam , while we're at it . Image
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Re: J.A.P. UCZ . 600 .

Postby Rohan » Thu Apr 17, 2014 3:52 pm

are you planning on installing this engine in a bike?


With all these flights of fantasy, is that a yes or a no ??

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Re: J.A.P. UCZ . 600 .

Postby Rohan » Thu Apr 17, 2014 3:54 pm

P.S. If you are planning to race or hotrod it, once you have replaced EVERYTHING, it should be good to go. !?

Can we mention here something about silk purses.
You may as well just forget about this engine then, and start from scratch ?

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Re: J.A.P. UCZ . 600 .

Postby Rohan » Thu Apr 17, 2014 4:02 pm

Matt Spencer wrote:heres a UCZ Cam , while we're at it .


That will be with some sort of lever followers. ?
Not such radical timing then...

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Re: J.A.P. UCZ . 600 .

Postby Mark » Thu Apr 17, 2014 5:18 pm

I'm kinda with Rohan on this......
I think I would be inclined to search for something a little more workable.

Not long ago I rebuilt a B44 Victor engine. One of my friends saw it and made the remark....."Polishing a Turd".
Yeah probably right, but I had fun and learned a little doing it.

Good luck with your project, dreams are good.

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Re: J.A.P. UCZ . 600 .

Postby X-file » Thu Apr 17, 2014 8:52 pm

Lighting a fire in the cylinder with 50/50 ATF/petrol seems to work well to free up a piston.
4:1 mixture of molasses/water left soaking is OK too,with an overspray of WD40 to stop a rust line at the watermark.

I think the chances of 95 mph are more than good.90 mph on a 500 sv has been done before,without anything exotic.You'll have to think a little more to get 15% more power and reach 100 mph,rather than 95.The barrel base flange looks a bit thin,and you might want a cradle from the crankcase to above the head to hold the barrel down.

29 mm intake port would be about ideal for good torque at 4000 rpm.Be realistic;valve diameter and valve lift may not be enough to support anything bigger.If you do a flow test with 10"H2O vacuum in the cylinder,you should be able to see 9"H2O vacuum in the port at full valve lift.Don't go bigger on the port diameter,if you're losing vacuum.

A carb size of 32mm or 34mm would be OK with a 29mm port.Good torque at 4000 rpm could still make good power at 5000 or 6000 rpm.You'll need about 256 degrees cam duration at 0.050" valve lift,for 4000 rpm with 104mm stroke.
22.5" intake length would work well at 4000,and work again at 5,400 rpm.
I wouldn't go bigger than 1-3/4" OD exhaust pipe.

I think your 100mph goal is possible.

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Re: J.A.P. UCZ . 600 .

Postby Rohan » Thu Apr 17, 2014 9:15 pm

When it all goes BANG, it will be a silly waste of a lovely old slogger that is somewhat rare these days... ?

I've been working on an old Enfield sidevalve slogger - it was in WW2 somehow, but doesn't seem to be a military model ?
Still chasing lotsa small bits, that hold it all together, so not much to show at the moment.
Was lucky enough to find the racks and some forks for it recently, so progress continues.
The 20" front wheel seems to be a bit of a problem, tyre and tube wise, might have to have it relaced to 19".
Enfield made a lot of similar models, with a lot of non-interchangeable parts - ask me how I know !
This is what it (hopefully) will look like some day.

Image

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Re: J.A.P. UCZ . 600 .

Postby Time Warp » Fri Apr 18, 2014 2:27 am

Whats wrong with the Avon 3.00 20" ribbed front.
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Re: J.A.P. UCZ . 600 .

Postby Rohan » Fri Apr 18, 2014 3:37 pm

Hmm, when I enquired, a while back, these didn't seem available.
Although its still a long way from needing yet.

It still might be cheaper to relace to 19" and use something commonly available.
I really don't think this will do 100+ mph, and I certainly won't, not with those 6" brakes.

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Re: J.A.P. UCZ . 600 .

Postby Matt Spencer » Sun Apr 20, 2014 2:18 am

The Average I.Q. in Australia is 98 .
The Japanese response to ' styling ' , was to add more .
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Re: J.A.P. UCZ . 600 .

Postby Rohan » Sun Apr 20, 2014 2:39 pm

Keep trying Matt, you'll get there eventually...

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