flathead speedo

Post by **downsey** » Sat Jan 28, 2006 7:47 am

i have a 52 minor with which i pulled the flathead and stock tranny, and put in a 1275 with a ribcase 4-speed. Will the existing speedometer work with the 4-speed?

Post by **ColinP** » Sat Jan 28, 2006 10:14 am

Downsey.

Could you please be a little more verbose?

I think you're writing from Oz (?), and I can't find the babelfish translation

erm. to "pull" is to move something (family edition guys

, tranny = Ford transit, flathead = ?

I think you're asking of the old 1952 Minor gearbox/rear axle ratios are the same as the 1098 cc gearbox (ribbed) without telling us which rear axle you have....
I think that the answer is no, try hunting the thread about calibrating speedometers.

All the best,

Colin

Post by **chrisd87** » Sat Jan 28, 2006 10:17 am

Pull = remove
Flathead = sidevalve
Tranny = transmission

(American sayings, I think)

Post by **bmcecosse** » Sat Jan 28, 2006 4:30 pm

The speedo will obviously work - but you may have to get a different cable connection at the gearbox end, and it may well be very inaccurate. Also the 1275 engine will probably wreck the early diff in the back axle - you should consider an upgrade. The old 'flathead' side valve engines (and boxes) are rare nowadays - don't scrap it!!

Post by **Onne** » Sat Jan 28, 2006 5:13 pm

Well, actually the early (Morris!!!) diffs are quite strong, as are the boxes

Post by **bmcecosse** » Sat Jan 28, 2006 5:36 pm

Aye the box is strong, but I doubt the diff will take a good 1275 for long!

Post by **Onne** » Sat Jan 28, 2006 11:43 pm

I have never tried.... and those diffs are getting too rare to try!
I heard the series MM had the perfect 50-50 weight distribution, thanks to the heavy box.

Post by **bigginger** » Mon Jan 30, 2006 12:27 am

If the writer IS in Australia, then they're the most common by far, it's the 1098s and ribbed boxes that are rare over there, since they stopped making them before they were introduced.

Post by **Scott** » Mon Jan 30, 2006 11:47 pm

bigginger wrote:If the writer IS in Australia, then they're the most common by far, it's the 1098s and ribbed boxes that are rare over there, since they stopped making them before they were introduced.

Not too many sidevalves left here

.
It's mainly 948cc 1000s that abound

.

The sidevalve gearboxes & diffs are very strong though. In all my years I've yet to see a broken gearbox & have only seen one diff breakage (and that was the housing, not the mechanicals).
That's with OHV engines also in front of the S/V gearbox

.

Post by **bigginger** » Tue Jan 31, 2006 12:54 am

From the horse's mouth there, folks