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Post by Kev on Jul 2, 2010 15:56:10 GMT
No! - if it IS regularly driven hard it WILL fail early - gently does it :PI can feel mine loosening up a lot now since it's rebuild,i'm fearful of ripping it's guts out........mind you i am driving it like ive nicked it ;D....4lts and a 4 barrell carb,i must say it goes very well...ha ha. Sorry.i'm going slightly crazy as ive been on this computer since 4.42am this morning..... Big Kev. Needs a lie down!
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Deleted
Deleted Member
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Post by Deleted on Jul 3, 2010 8:20:38 GMT
I checked oil and it is spot on in the middel Hot or Cold markings, I will take it easy now, its not like the chassy or brakes are up to sporty driving but some times its just sooo much fun
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Post by Tim Goddard on Jul 5, 2010 12:45:21 GMT
So to sum up then what is the box to fit if you want to upgrade and want a straight forward swop?
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Post by harvey on Jul 6, 2010 13:25:40 GMT
Best 35 box is the 303 series spec, after that the easiest swap is a BW65 form a P6B which apart from a bit more difficulty getting it in because it has to be fitted to the engine c/w the bellhousing and converter, only needs the selector cable from the P6B and a small wiring mod and it's done. It's more reliable than a 35, but it's still only a 3 speed. It can be upgraded to 66 spec for the best result. Next option is the ZF 4 speed from a V8 Sherpa as it has no electonics and a cable speedo. A bit more involved but not too bad. You can get Torqueflites to fit (still only a 3 speed) as well as some of the 4 speed yank boxes, but you said you wanted the easiest.
Personally if you just want a bit more reliability without the extra work involved in fitting the ZF then I'd say the uprated 65 box would be a good option.
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Post by Tim Goddard on Jul 6, 2010 14:05:46 GMT
Best 35 box is the 303 series spec, after that the easiest swap is a BW65 form a P6B which apart from a bit more difficulty getting it in because it has to be fitted to the engine c/w the bellhousing and converter, only needs the selector cable from the P6B and a small wiring mod and it's done. It's more reliable than a 35, but it's still only a 3 speed. It can be upgraded to 66 spec for the best result. Next option is the ZF 4 speed from a V8 Sherpa as it has no electonics and a cable speedo. A bit more involved but not too bad. You can get Torqueflites to fit (still only a 3 speed) as well as some of the 4 speed yank boxes, but you said you wanted the easiest. Personally if you just want a bit more reliability without the extra work involved in fitting the ZF then I'd say the uprated 65 box would be a good option. Thanks Harvey, The uprated 65 sounds like the one for me. Would Grawall do anything like that?
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Post by harvey on Jul 6, 2010 15:07:09 GMT
Tim, I've sent you a PM.
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Post by Kev on Jul 6, 2010 17:51:08 GMT
Harvey, when you got time can you elaberate on the yank boxes that might/do fit.
Cheers, Big Kev.
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Post by harvey on Jul 6, 2010 18:17:20 GMT
The very first Range Rover autos were fitted with the 3 speed Torqueflite/Loadflite box, so with the adapters from the Rangie those boxes can be mated to the Rover V8, although because the bellhousing and main casing are cast in one piece you'd have to find out which variation of the box was used, or alternatively rebuild the rear of a Rangie box into a 2wd version. The other one I know of is the TH700R4 which is a 4 speed o/d box, but I'm not familiar with exactly how the conversion is done to get it to fit to the back of the Rover V8
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Deleted
Deleted Member
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Post by Deleted on Sept 22, 2010 12:43:34 GMT
Hello all. I'm the newest member and was looking for info on replacing the 35. I live in Vancouver Canada and don't have a P5. I have a couple of SD1s and a 70, P6B. What I really want is longer legs so looking for the overdrive. I thought the group might be interested in this. www.dabsolutions.co.uk/stag_zfauto.htmlI have a zf4hp22 I picked up from a BMW for $80 and I bought one of these adapters. Thats as far as I have got so cant tell you anymore about it at the moment. The adapter looks pretty good. It seams to work well in the stag so with the rover to 35 bellhousing it shouldn't be a problem me thinks. Also this place www.aluminumv8.com/ Has an adapter to fit a 700r4 (basicly a corvette transmission) to the rover engine. I have a transmission and this adapter for the SD1. (another project) I hope this might help someone. Cheers. Tony.
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Post by Tim Goddard on Oct 1, 2010 7:18:56 GMT
Is the Bw65 likely to have a smoother gear change than the original BW35 box as well as being a stronger unit?
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Post by enigmas on Oct 1, 2010 8:29:09 GMT
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Post by harvey on Oct 1, 2010 13:33:36 GMT
The 65 box does indeed use some of the same internals as the 35, so in theory shouldn't be better, but in use the 35's fail far more regularly than the 65, probably in the ratio of about 10:1 at a guess. 65 is still a 3 speed though, but given the choice I'd have a 65 over a 35 any day. All of the recent boxes I've been involved with doing recently have been 35's, not a single 65 amongst them.
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Post by enigmas on Oct 2, 2010 1:15:32 GMT
What actually fails Harvey? (I have the original Rover BW35 gearbox...still fitted with the rear pump but with BW40 internals...essentially a larger front pump and OZ gears which are not interchangeable with the English version. The box also runs substantially higher pressure as I used components (springs) from the P76 valve body (4.4 litre engine). It does 300 kms per week for the last 12 years. Not a race box but utterly reliable the way I drive it. The BW51 version has a 3 bolt rear servo...so breaking the servo from it's mounts during hamfisted reversing is no an issue!
All the development for the BW35 in OZ behind Valiant Hemi 245 ci & and big carb & EFI 4.1 & 3.9 injected engines into the late 70s & early 80s before the AOD units were used were with the BW35 case (mods and braces used on some versions made to strengthen it) and not the narrow case BW65.
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Post by harvey on Oct 3, 2010 21:07:58 GMT
Both 35 & 65 boxes suffer with clutch and band failures, the clutches normally because of a piston seal problem, it just seems to happen on 35 boxes more often, and the 35 rear servo problems are well known, and although most front servos are the self adjusting type, which work well, taking the sump off to set the manual ones rarely happened. 65 boxes have both bands externally adjustable. Centre supports seem to come loose more on the 35 box as well. As I said before, with a lot of the same components the 65 shouldn't be that much better, but it is.
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Post by davenorthampton on Mar 27, 2011 1:31:54 GMT
Hello new on here,i have a 70 saloon i use everyday,for the last 6 years,just lpg converted but in all honesty,the savings arent as good as i though. my geabox is giving me trouble,and im going to replace,however in the last two days i found comments about range rover 4 speeds fitted into p5,s.One i believe is a member on here Glenn,and the other is fitted to the supercharged one currently on ebay.. ive read the previous posts on subject and would like to know more,is someone converting these boxes ready to go.Where did glenn purchase his? i do lots of long distance and that extra gear would be a great help. thank you
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Post by glennr on Mar 28, 2011 9:07:50 GMT
Hello new on here,i have a 70 saloon i use everyday,for the last 6 years,just lpg converted but in all honesty,the savings arent as good as i though. my geabox is giving me trouble,and im going to replace,however in the last two days i found comments about range rover 4 speeds fitted into p5,s.One i believe is a member on here Glenn,and the other is fitted to the supercharged one currently on ebay.. ive read the previous posts on subject and would like to know more,is someone converting these boxes ready to go.Where did glenn purchase his? i do lots of long distance and that extra gear would be a great help. thank you Hi Dave, I hope you find this useful. www.grawallautos.co.uk/ Give them a call and have a chat. They are very approachable. T'was not me who had the 4 speed fitted btw.
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Post by Kev on Mar 28, 2011 16:42:13 GMT
Have a chat with Richard Stennett,he did this conversion years ago,it's a good mod.His car drives a dream. Big Kev.
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Post by spanner on Apr 13, 2011 14:09:27 GMT
Hey Guys, I would like to source a ZF4 HP22 4 speed- 2 wheel drive auto box from a LDV Sherpa (400 I think) Ambi's or Police Vans. Can anyone help please?? Cheers Spanner Ireland
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Post by Kev on Apr 13, 2011 20:08:23 GMT
Hey Guys, I would like to source a ZF4 HP22 4 speed- 2 wheel drive auto box from a LDV Sherpa (400 I think) Ambi's or Police Vans. Can anyone help please?? Cheers Spanner Ireland Spanner, I bet you would......they're rare now,best try is an online breakers,put the word out via these guys,expect a heavy price tag tho.... and maybe your be lucky.If your lucky enough to find one,it'll probably need recommisioning,they are expensive to re build..from what ive been told. Good Luck. Big kev.
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trymes
Rover Fanatic
Posts: 241
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Post by trymes on Mar 28, 2012 3:41:06 GMT
This is an old thread, but I have posted this information elsewhere here, and thought I should update it here for anyone searching the archives.
Based on my investigations, the easiest "yank" AOD transmission upgrade for the Rover V8 should be the GM Turbo Hydramatic (THM) 200-4R. This transmission was fitted to large sedans/saloons, as well as the Buick Grand National, and is plenty strong.
It has the BOPR bolt pattern right out of the box, and does not suffer from the THM 700-R4's super-low first speed. One would need, however to verify that it will fit in the tunnel, but the pictures I have seen look promising.
If only I had a good method of retrofitting one to my 3-litre!
Tom
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Post by jimjam on Apr 11, 2012 2:10:42 GMT
The 200-4R still needs an adapter plate etc to use behind a Rover V8 and is not as strong as a 700R especially if it's a modified unit.
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trymes
Rover Fanatic
Posts: 241
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Post by trymes on Apr 28, 2012 20:22:30 GMT
Jim, Sounds like you know more about this than I. It was my understanding that the200-4R had a universal bolt pattern in the bellhousing. Does it have a different Buick pattern than the Rover? For example, this article (click here) mentions: "While most 200-4R transmissions feature a dual bolt pattern bellhousing and will bolt behind any GM V-8, as well as some V-6s, there is one particular 200-4R that features a single POB (Pontiac, Olds, Buick) bolt pattern that wont work behind a Chevy." Also, while the 700-R4 may be stronger, the 200-4R is plenty strong, having been installed behind the Turbo Buicks in the '80s. Besides, it's a bit of a moot point when you are putting it behind an unmodified or lightly modified 3.5 Rover, as pretty much anyone here would be doing, as it's certainly plenty strong to handle that. Lastly, the 700R4 still has the downside of that stump-pulling first gear... Am I missing something? Tom
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Post by jimjam on Jun 27, 2012 5:02:40 GMT
The 215 engines had what they called a "dog-ear" bell-housing pattern which disappeared in the mid-sixties when the larger capacity V8s came into play for BOPR. It is this generation of V8s that have a common GM pattern, unfortunately for us.
I was only mentioning strength as if you had the choice between a weaker box with the same installation issues you'd chose the stronger one.
I've been looking for an elegant solution that would allow me to fit my 5.2litre Rover V8 in my Coupe. Strength is important in this case as it's a stump-puller of a motor. I also want an overdrive 'box as it has so much torque below 2000rpm it would be stupid having it spin at 3000 at 70mph.
D&D fabrications in the USA make an adapter for the 215 (Rover V8) to mate to any GM gearbox using that later BOPR pattern. I've never managed to find out how much it costs though.
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Post by enigmas on Jun 27, 2012 10:05:48 GMT
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Post by jimjam on Jun 27, 2012 20:39:59 GMT
I contacted Ridgecrest some time ago and they weren't sure what the differences would be to produce a kit for a Rover V8 as apposed to a P76. To be honest they didn't sound all that interested.
Castlemaine list the kit but nobody there could tell me anything about it, which versions of the gearbox it was suitable for etc. They said they were working through their designs and this was one they didn't know much about and that they would get back to me. Once again never got a straight answer from them and I wasn't going to part with $1000+ on the off-chance it would do what I wanted. That was a couple of years ago though and I haven't contacted them since.
It's very frustrating knowing that there are two companies pretty much on my doorstep who have done this or who offer kits but who I can't nail down. If anyone has any better luck I'd be interested to hear about it.
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