5 bolt bumpers question

Post by **almondgreen** » Mon Jan 04, 2016 3:51 pm

I have a question about 5 bolt bumpers.
How long have they been fitted to Minis ?
When was the change to 3 bolt ones.
Are all 5 bolt ones, original, or where 5 bolt reproduction ones made ?

Spitz · Post by **Spitz** » Mon Jan 04, 2016 8:58 pm

A friend's 64 Countryman I looked at yesterday has holes for the 5 stud bumper

Post by **Simon776** » Mon Jan 04, 2016 9:19 pm

There were after market five mounting bumpers, but they use tags across the underside of the bumper so look quite different to a genuine one - at least on the underside.

Post by **Andrew1967** » Sun Jan 17, 2016 10:10 am

I've just picked up a couple of new 'old stock' repro 5 bolt bumpers - manufactured as Simon says.

Different profile (larger radius) than the originals by the looks of it.

cpr1 · Post by **cpr1** » Sun Jan 17, 2016 12:11 pm

Andrew1967 wrote:I've just picked up a couple of new 'old stock' repro 5 bolt bumpers - manufactured as Simon says.

Different profile (larger radius) than the originals by the looks of it.

Had some like these, and they were a pig to fit.

Post by **Andrew1967** » Sun Jan 17, 2016 5:42 pm

cpr1 wrote:
Andrew1967 wrote:I've just picked up a couple of new 'old stock' repro 5 bolt bumpers - manufactured as Simon says.

Different profile (larger radius) than the originals by the looks of it.

Had some like these, and they were a pig to fit.

It'd certainly be a pig to fit on the back of the pick up

....

rogerotto66s · Post by **rogerotto66s** » Wed Aug 30, 2023 11:44 pm

This seemed to be the “proper” topic to bring back to life!

I just purchased a set of 5-bolt bumpers (bottom in picture).
They do not have holes for corner bars.

Their profile is quite different when compared to my original 5-bolt bumper (1966 Austin Cooper S - top in picture).
- the corners are rounded with no sharp edges
- the bolts are mounted in a different manner

Can anyone provide info re: the timeline for the change in 5-bolt bumpers.

D7CFC03B-AF83-444A-A844-5B56474D4249.jpeg

Post by **Old English White** » Thu Aug 31, 2023 8:11 am

The bumper(s) you have purchased are the reproduction/aftermarket bumpers which Simon referred to in his post above. They are not an original fitment to any Mini.

rogerotto66s · Post by **rogerotto66s** » Thu Aug 31, 2023 11:25 pm

Any conversion date for 5-bolt going to 3-bolt?

Any date range for the after-market bumper?

Post by **360gts** » Fri Sep 01, 2023 12:16 am

rogerotto66s wrote: ↑Thu Aug 31, 2023 11:25 pm Any conversion date for 5-bolt going to 3-bolt?

Any date range for the after-market bumper?

Must have been after MK2 production ended...I have had two MK2 S's
and they were fitted with the original 5 bolt bumper.
So, question is..were the 3 bolt bumpers ever fitted as standard or were they just replacements?????

Allen Brzeczek · Post by **Allen Brzeczek** » Fri Sep 01, 2023 9:55 am

I am of the considered opinion that the 3 bolt bumpers are an after market replacement. I fitted a stainless steel pair on my 67 S some 3 - 4 years ago which look OK but found that I had use rubber insertion on the front at it was prone to vibrating noisily especially on tick-over.

Have retained the originals for possible re-chroming at some later date.

Post by **MiNiKiN** » Fri Sep 01, 2023 11:27 am

rogerotto66s wrote: ↑Wed Aug 30, 2023 11:44 pm This seemed to be the “proper” topic to bring back to life!

I just purchased a set of 5-bolt bumpers (bottom in picture).
They do not have holes for corner bars.

Their profile is quite different when compared to my original 5-bolt bumper (1966 Austin Cooper S - top in picture).
- the corners are rounded with no sharp edges
- the bolts are mounted in a different manner

Can anyone provide info re: the timeline for the change in 5-bolt bumpers.

D7CFC03B-AF83-444A-A844-5B56474D4249.jpeg

My original Innocenti bumpers look very similar with the same kind of bracket - so my best guess is that they are Innocenti

rogerotto66s · Post by **rogerotto66s** » Fri Sep 01, 2023 5:03 pm

MiNiKiN wrote: ↑Fri Sep 01, 2023 11:27 am My original Innocenti bumpers look very similar with the same kind of bracket - so my best guess is that they are Innocenti

Just found this on eBay.
It is described as an Innocenti bumper.

05E0E058-E5BF-4813-803F-054357755F5F.png

Post by **MiNiKiN** » Mon Sep 04, 2023 8:18 am

rogerotto66s wrote: ↑Fri Sep 01, 2023 5:03 pm
MiNiKiN wrote: ↑Fri Sep 01, 2023 11:27 am My original Innocenti bumpers look very similar with the same kind of bracket - so my best guess is that they are Innocenti
Just found this on eBay.
It is described as an Innocenti bumper.

05E0E058-E5BF-4813-803F-054357755F5F.png

Behold, I told you so

Post by **Peter Laidler** » Mon Sep 04, 2023 9:06 am

I saw my first 3 bolt bumpers in the mid 70's when I was doing some work on my run-about 998 MSM130F and I am positive that they were Unipart, covered with that white stuck-on tape that was a bxxxxxd to get off. I feel that the 3 bolters were a means of cheapening production - by Leyland cans

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