• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.

    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

100-4 OD Trans

tony barnhill

Great Pumpkin - R.I.P
Offline
So, I've recently acquired a 28% reduction OD trans for a 100-4...but, no longer have a 100-4...anybody know what I should ask for it when I put it on ebay?
 
Well Tony, I don't know but it seem like it ain't wurf a plug nickle. Unsigned- /bcforum/images/%%GRAEMLIN_URL%%/devilgrin.gif
 
About 5 years ago I picked up a used, stored may years, supposedly working when pulled from the car BN1 tranny for about $375,but I think that was probably cheap. If everything is rebuilt and new I would think over a grand, if good used I don't know somewhere a little south of that, is it a 3 speed or 4 speed? (BN1 or BN2)
 
Here ya go....now, how do I tell BN1 vs BN2?

ahod4.JPG


ahod3.JPG


ahod2.JPG
 
It's a four speed--the BN1 transmissions (three-speed) had the transmission and overdrive in the one case whereas the BN2's were separate as shown in the photos.
 
Thanks, Michael - now, whats it worth?
 
I guess that depends on the circumstances:

It would have been worth a lot to me in July 2002 when I was three thousand miles from home and second gear on my three-speed broke. Lacking any other solution I limped down to Smitty's, bought a conversion kit and Toyota transmission and drove home.
 
Hi Tony,
It's a BN1 transmission. Attached are pics of the BN2 transmission. Note that the BN2 has a clutch housing that is separate from the transmission case. You can barely see a separation line about 2" behind the bell. The BN1 clutch housing is one piece with the main transmission housing.

Also the BN2 shifter is more toward the top of the transmission. The BN1 shifter attaches much lower on the side of the housing.

BN1 transmissions in good condition are getting remarkably scarce.
D
 

Attachments

  • 6285-BN2transmission,SV.jpg
    6285-BN2transmission,SV.jpg
    153.3 KB · Views: 129
  • 6286-BN2transmission.RV.jpg
    6286-BN2transmission.RV.jpg
    143.7 KB · Views: 123
So, there's 1 vote for BN1 & 1 vote for BN2?
 
Tony--

Better make that two votes for a BN1--I looked at things too fast and relied on faulty memory. Egg on face.....
 
It sure looks like the tranny in my BN1...

Actually a BN2 Might be worth more, as many people like to convert to 4 speeds and a stronger box in their BN1s.

I have a BN1 with original box and it shifts slow (or I get a real good grind) and leaks oil, this is after a rebuild, prior to this it was worse, leaked a ton of oil and jumped out of 2nd, I think the jumping out of 2nd thing may be coming back.

That being said I like the originality and novelty of the gearbox, and having synchros on first gear.
 
The BN2 transmission is a LOT stronger. Really the same as the later six cylinder cars, excluding the BJ8, which is different.

However, for those with BN1's who wish to keep the car original, good BN1 boxes & parts are getting scarce.

To convert BN1 car to BN2 box requires changing the flywheel, the clutch, & finding a BN2 bell housing, not cheap.
D
 
So, if somebody on the BCF needs it, let me know...it'll probably go on ebay in a week or so if not....thanks.
 
Tony, I don't know the value of a BN1 tranny, they don't come up for sale that often, but I do know quite a bit about e-bay.

One of the things I noticed is that things generally bring more money if you set the initial bid lower rather than higher.

Case in point I was selling a TR3 speedo recently, I set the opening bid at about what I thought it was worth. Failed to sell twice, the third time I halved the opening bid, and it sold for more than the two times it failed to the first time.

I have had this happen to me many many times, generally I start low unless it is something that I really dn't want or need to sell that much and only will if you get top dollar.

You can set a reserve if you want to make sure it doesn't go too cheap, but I think this has somewhat of a chilling effect on the psychology described above--when they bd on cheap item with no reserve they start thinking of it as "theirs" and ultimately bid more and more, also more people I think tend not to bid with a reserve.

All my opinion of course, no guarantees, my low start has backfired occasionaly, but usually on low demand items.
 
Yeah, I'd have to set a reserve - I know how much I have in it.
 
didn't you just ask this question about two months ago? This is a BN1 gearbox!
 
If rebuilt and bench tested, a BN1 gearbox+OD is worth about $1,500. With the new baulk rings made, a rebuilt gearbox with the new baulkrings available now, you're looking at $2,500 completely rebuilt.

If used, but in good shape, somewhere between $500 and $1,000 depending on the synchro and gear face wear.
 
Alan - I did....this time I got a better understanding of its value.
 
Back
Top