Sunbeam Alpine: Differential Part One Issues & removal
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- เผยแพร่เมื่อ 6 ก.ย. 2024
- This video is Part One of a two part series of videos. This video shows the removal and replacement of a defective differential on a Sunbeam Alpine by the Arrow 5, Classic Car Workshop in Hampshire, England. Part Two of this video series shows what an Alpine drives like when fitted with a non-standard 3.7 diff.
We extend our grateful thanks to Arrow 5 for their help with the car and in making this video and recommend them for any mechanical jobs that you may need doing on your classic car.
NOTE: WE PAID FULL PRICE FOR THIS WORK AND RECEIVED NO DISCOUNT OR OTHER INCENTIVE.
That is correct, the 3.7 diff was not fitted to Rootes series renditions , circa 1959 - 1966, but it was fitted to some Arrow series cars, notably the Hillman Hunter GLS. I also have a 3.7:1 diff fitted to my car. It has raised horsepower, and carries it well. The only drawback is the speedometer reading which is about 5 mph under actual speed. On a recent run from Shepparton back to Melbourne our car achieved 42 mpg. [electronically proved ] We changed the wheel fitment on our car to 14" x 5 1/2 J pressed steel rims from a Peugeot 206 . The stud pattern is 4 x 108 ,shod with Bridgestone Ecopia 175 x 70 x14-84H tyres. These have a circumference of 1892mm / 74.5" which is a slight step up from the original 13" wheels. Thanks for the Sunbeam Alpine channel............ great information.... and truly appreciated.
Thank you for your kind comment. The best mpg that we have achieved was also 42. Typically we get 37-40 which gives us a range of 400 miles when the tanks are full. Our Speedo reads very close to the correct speed, getting slightly above the actual speed the faster we go. This was more by luck than judgement though.
Nice Video! Regarding the failed unit; did the crown gear mounting bolts loosen themselves?
No, I think we all expected to find the bolts loose but they were fine. Look out for Part Two which will publish in a week or so, that shows what the car drives like around town and in everyday driving.
@@TheSunbeamAlpineChannel This is an interesting subject. The crown wheel collapsing bolt shims or is it called spacers. But what year didthis problems appear?
@@k.kristianjonsson1537 the problem was noticed as a knocking when taking up drive or braking. We noticed this a couple of months ago and got it fixed at he earliest opportunity.
@@TheSunbeamAlpineChannel I mean, it did show up on some models some year. Many of the Commer van K 170 had this problem. Both my K170 had a loose crown wheel.
I don't understand why you removed the driveshafts. It's only necessary to taken them out of the diff. splines. (Talking about the space in a narrow garage). But you probably had other reasons.
You are correct, we COULD have just pulled them out a short distance to release the diff but we knew that Arrow 5 had a selection of replacement parts on the shelf so we took it to them to do the job. They did an excellent job on our car, she drives like a dream.
@@TheSunbeamAlpineChannel I do have a 3.7 : 1 diff on the storage shelf. I am considering, but first I have check out what I have in the car now. (The gearing feels so high....)
@@k.kristianjonsson1537 check out the video that launches tomorrow evening and compare the revs and speed to your car.