| T O P I C R E V I E W |
| Jimberlake |
Posted - 05 Feb 2013 : 22:16:40
Been watching the forum a while and love it, some great bits of advice.
Anyhow thought it's worth a try  though guess they are like rocking horse.
I'm running a Commer camper that runs a Hillman Hunter engine without overdrive and she doesn't half scream with the low diff and 4 speed!
I've heard that with fettling the bell housing and input shaft they will fit and have a great ratio compared to other overdrives out there.
As said worth a try and thanks in advance if there is one somewhere.
Cheers all
Jim
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| 15 L A T E S T R E P L I E S (Newest First) |
| bigt80 |
Posted - 09 Apr 2013 : 16:05:31
Glad to hear you got sorted Jim. Where's the box? I'm down south at the moment and heading to Banbury on Friday. Might be able to help move it so far? Cheers. G. |
| Jimberlake |
Posted - 09 Apr 2013 : 12:10:48
Thanks again all, the information really was helpful here. Finally managed to Hunt(er) a box down - groan  .
It's down South but guess have to travel as they really are like rocking horse I've found. Been lucky as it has a new cone in, already fabricated mounting - require for the Commer and all electrics except the dash switch which I've now got from Speedy's.
Weekend of fitting it all which should be fun.
Thanks again
Jim |
| bigt80 |
Posted - 19 Mar 2013 : 15:43:17
I think it was only the H120 box (&GLS Hunter) that had the close ratio box - well really it was just a 'longer' 2nd gear I think; as there was a 'hole' on the standard Rapier between 2nd & 3rd and this was even worse with the std box on the H120 (pre-production) as engine would go 'off the boil' when changing up - especially as max torque was high up the rev range on the H120 (4000 I think) and axle ratio also higher; so I understand that's why there were changes of ratios for that model, but as 1922 says, very little difference really.
Can't see why it won't fit your vehicle either Jim.
Re identification: there's a suggestion that the casting no. was altered & I have found that to be a possible means of external identification.
STD Box = 6DA 21055
H120 Box = DA 21055 as if the '6' has been ground-off.
It has worked for me so far, but I expect there will be exceptions.
Would be interested to hear if others can help bolster this theory!
Cheers and sorry to go off track on this thread. G. |
| 1922 |
Posted - 15 Mar 2013 : 13:27:08
The difference between the H120 gearbox and the boxes in the other Arrow cars (Minx, Hunter, Gazelle, Vogue, Alpine, Rapier, Sceptre) is tiny.
From memory the gearbox main-shaft has a bigger nut - that's it (and that difference probably goes away with the later cars).
There is wide ratio box and a close ratio gear-set. Not entirely sure which cars had which but I think the Rapier, Rapier H120 and Sceptre got the close ratio - maybe a few others (Hunter GLS perhaps).
You cannot tell from the outside as the boxes are externally identical.
If an H120 box will fit then I can't think of any reason that any other Arrow gearbox would not also fit.
On the early overdrives (the 'D' type) the H120 runs at a higher pressure than the other cars (just a different pressure relief valve spring) on the later overdrives (the 'J' type) the H120 overdrive is identical to all the other Arrows.
Hope this helps.
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| Jimberlake |
Posted - 14 Mar 2013 : 23:56:54
Thanks again. I've been told that an arrows box won't fit unfortunately. The engine in mine is a Hillman hunter alloy head so messing around to do with it. Would do that for a h120 box as worth the hassle and risk cause of the ratios coupled with the unknown factor its probably to much risk for the work needed. Thanks very much though, really is appreciated.
Jim |
| bigt80 |
Posted - 08 Mar 2013 : 09:23:18
Odd problem there Jim, which I can't help on, but I was in Banbury last weekend and see that electricnick does have 1725 Arrow gearbox complete. Of course it is a bit of a lottery as to whether its a good one if it came out of a car that wasn't seen running before being scrapped. I speak to him fairly regularly, so will see if he knows its history and maybe it would be worth a go at a fair price? I'll drop you a pm when I've spoken to him next time. Cheers. G. |
| Jimberlake |
Posted - 06 Mar 2013 : 01:03:30
Sorry Bigt, been busy for a couple of weeks and not ventured here so thanks for the post. No didn't really have any luck I'm afraid, I'm after the gearbox and overdrive together but think electric was only offering a replacement overdrive, when I asked again for a price it went cold.
Still defo looking for one for sure, I think the gearbox may have blown in the van so if I'm going to remove it anyhow I may as well try to put an o/d in. Would be great if you've not been yet and could look for one, will owe you a drink for sure.
Strange one with my gearbox, seem to be able to get 1 and 2nd and I think 4th but when in neutral or reverse, I lift the clutch and the van doesn't try to move forwards at all but it does bog the engine down until it stalls. No nasty noises from it, very strange and nothing I've come cross before, had no joy from anyother forums in someone putting their finger on what it could be. Its also quite smokey from the oil cap so bought a compression tester and mini camera to try to determine the cause before lifting the head off.
Cheers
Jim |
| bigt80 |
Posted - 18 Feb 2013 : 20:35:42
quote:
Originally posted by Jimberlake
Thanks BigT, very much appreciated I'll get onto him tonight. Was hoping to get to France late Summer dont fancy it much without one. Bad luck is that the diff is a heavy load one so is even poorer ratio.
Cheers
Any luck with electricnick Jim? I'm seeing him in a couple of weeks, so could help him look for unit if still required? Cheers. G. |
| bigt80 |
Posted - 18 Feb 2013 : 20:33:51
quote:
Originally posted by Paul_White
Have you tried looking for a MK3 humber sceptre gearbox?
I think they were all overdrive.
Yes. same as Standard Rapier. There were a lot of Auto Humbers of course.  .
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| Paul_White |
Posted - 16 Feb 2013 : 04:55:52
Have you tried looking for a MK3 humber sceptre gearbox?
I think they were all overdrive. |
| Jon |
Posted - 07 Feb 2013 : 16:50:21
Jack it up,put it on stands at the back, then put a piece of tape on the tyre and another one as a ref point. Then get under the van and put a mark on the propflange and another ref point on the diff case.
Turn the wheel and count how many revolutions the prop is doing untill the wheel has done one revolution.
Then you will get your answer
Hillman Avenger MK1 GT,
Commer PB Pick-Up,
Commer PB Panel Van,
Commer Auto sleeper,
Triumph Stag MK1,
Chevette HS x2,
Lancia Delta Integrale,
Fiat Mk1 Uno Turbo,
Rapier Fastback,
MGZR Xpower grey MK2,
MK5 Transit Hallmark 1965-95 celebration,
MK5 Transit 2.5td 150,
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| Jimberlake |
Posted - 07 Feb 2013 : 16:21:00
Hmmm, was information from Rich, seemed to think it was heavy duty and therefore worse ratios, good news if not then...doubt it wouldve been changed to a different one |
| Jon |
Posted - 07 Feb 2013 : 11:01:35
It shouldnt be as the later ones were all 4.77.1 ratio unless special order
Hillman Avenger MK1 GT,
Commer PB Pick-Up,
Commer PB Panel Van,
Commer Auto sleeper,
Triumph Stag MK1,
Chevette HS x2,
Lancia Delta Integrale,
Fiat Mk1 Uno Turbo,
Rapier Fastback,
MGZR Xpower grey MK2,
MK5 Transit Hallmark 1965-95 celebration,
MK5 Transit 2.5td 150,
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| Jimberlake |
Posted - 06 Feb 2013 : 23:13:07
Hi Jon, it is lovely and would have cost a mint to have it done that well but on the market it's probably not far off what someone would pay still alot of work to do but the finish is cracking. Feels like a bargain
Funnily enough I just posted a message to you and panky about water pumps.
Thanks BigT, very much appreciated I'll get onto him tonight. Was hoping to get to France late Summer dont fancy it much without one. Bad luck is that the diff is a heavy load one so is even poorer ratio.
Cheers
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| Jon |
Posted - 06 Feb 2013 : 18:50:13
Alright Jim hows the new beast running you had a right bargain
Hillman Avenger MK1 GT,
Commer PB Pick-Up,
Commer PB Panel Van,
Commer Auto sleeper,
Triumph Stag MK1,
Chevette HS x2,
Lancia Delta Integrale,
Fiat Mk1 Uno Turbo,
Rapier Fastback,
MGZR Xpower grey MK2,
MK5 Transit Hallmark 1965-95 celebration,
MK5 Transit 2.5td 150,
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