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4 speed autoboxes
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OzRover
SD1 User


Joined: 18 Nov 2006
Posts: 3
Location: NSW Australia

PostPosted: Sat Sep 22, 2007 12:30 pm    Post subject: re Reply with quote

I looked into the 4l30e.None of the aftermarket computers will control it(will do 4l60e and 4l80e).It is all ecu controlled not just the o/d.you also cant swap on a rover 180 bellhousing as the oilways on the back are all different from 3 to 4 speed.
I have an AW71 from a Volvo here as well as a v6 Buick t700 and a v8 chev t700 and a AW4.(ECU control)The aw71 or the t700 are the easiest to fit,though plates are not commercially available for the v6 t700,shame as the converter is a good match stall wise.The output flange from a gm180 from a rover slides straight on,just needs a hole drilled and tapped to retain it.Needs a replacement shifter or you can use the stock 1 and not have the "1" position.
I am reluctant to use the ZF box because of the neutral burnout problem,parts are horribly expensive also.(The workshop I did my time in resorted to fitting brand new boxes from ZF Australia as there wasnt a lot of difference in price to a reco one and you had the factory warranty for the next time it burnt out).Still needs floorpan mods with a rangie bell housing too.
Regards Doug
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yonexsp
SD1 Regular


Joined: 22 May 2007
Posts: 194
Location: Canada

PostPosted: Mon Oct 01, 2007 7:05 pm    Post subject: Reply with quote

Doug,

I've seen the AW71 case on the web. Any idea what in terms of cost it would take to do this conversion?

Cheers Ken./
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rover guy
SD1 User


Joined: 06 Jun 2007
Posts: 12

PostPosted: Mon Oct 01, 2007 9:39 pm    Post subject: Reply with quote

Have you seen this D&D Fabrication's page?

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Note: If you try to get to it thru the website's links, its 404 due to a bad link... just replace the .php extension with .htm...

Nothing there for AW71 but they do make a plate for r700 tranny to RV8.
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yonexsp
SD1 Regular


Joined: 22 May 2007
Posts: 194
Location: Canada

PostPosted: Mon Oct 01, 2007 10:21 pm    Post subject: Reply with quote

Bill,

which one should I be looking at?
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yonexsp
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Joined: 22 May 2007
Posts: 194
Location: Canada

PostPosted: Mon Oct 01, 2007 10:50 pm    Post subject: Reply with quote

Bingo!!!

Would this solve the Electronic control issue?

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OzRover
SD1 User


Joined: 18 Nov 2006
Posts: 3
Location: NSW Australia

PostPosted: Sun Oct 07, 2007 10:16 am    Post subject: re Reply with quote

As posted above,this will control a 4l60 or 4l80,not the 4l30e.There is n point in using one as A They are pricy and B the 4l60 is nothing but a th700 with electronics.The problem with usig a V8 th700 is the amount of mods required to the trans tunnel and the lack of a suitable torque converter,they are all designed for engines over 5lt.The V6 buick/chev boxes fit in the tunnel and converters are around for 2.8 to 4.3 liter engines.The chev adapter plates are pricy for what they are as well.I picked up the AW71 box from a turbo volvo for $50,a V6 bell housing and converter is about the same dollars.Lots of heavy duty parts around too.see the Turbo bricks forum.
Doug
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Zaphod
SD1 User


Joined: 13 Mar 2007
Posts: 62

PostPosted: Mon Nov 19, 2007 6:34 pm    Post subject: Reply with quote

A ZF 4HP22 recoverd from a 3.6, 2.9 or 3.2 Jaguar XJ40 will NOT suffer the burnout problem. You will find there was a fix for this issue that involved drilling a new oilway to releive pressure on the 1st gear clutch pack. Once done the burnout can't happen. Jaguar and ZF were aware of this problem and applied this fix before fitting the box to any car on the production line, hence you will never hear of one failing in this way in a Jag, unlike the BMW, volvo and range rovers that had these boxes fitted which will fail.

There is a 4 speed GM180, I had 2, one in an '86 senator A and one in an '86 opel Monza GSE. This had electronic control on the OD only, rest of the box was at a 180. It has to be said it gave the impression of being a stopgap, so maybe not that many about. I had the box out of the Senator and it was definatly a 180 with an overdrive fitted to the output of the box in place of the tail assembly.

Stewart

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1992 Citroen XM
1976 SD1 3500
1975 MG Midget
1959 AH Sprite
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yonexsp
SD1 Regular


Joined: 22 May 2007
Posts: 194
Location: Canada

PostPosted: Wed Nov 21, 2007 12:39 am    Post subject: Reply with quote

Zaphod wrote:
A ZF 4HP22 recoverd from a 3.6, 2.9 or 3.2 Jaguar XJ40 will NOT suffer the burnout problem. You will find there was a fix for this issue that involved drilling a new oilway to releive pressure on the 1st gear clutch pack. Once done the burnout can't happen. Jaguar and ZF were aware of this problem and applied this fix before fitting the box to any car on the production line, hence you will never hear of one failing in this way in a Jag, unlike the BMW, volvo and range rovers that had these boxes fitted which will fail.

There is a 4 speed GM180, I had 2, one in an '86 senator A and one in an '86 opel Monza GSE. This had electronic control on the OD only, rest of the box was at a 180. It has to be said it gave the impression of being a stopgap, so maybe not that many about. I had the box out of the Senator and it was definatly a 180 with an overdrive fitted to the output of the box in place of the tail assembly.

Stewart


How would you control the overdrive if you fitted the 4 speed gm180 to an V8 SD1?
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Lehto
SD1 Regular


Joined: 12 Aug 2006
Posts: 549
Location: Finland

PostPosted: Wed Nov 21, 2007 9:21 am    Post subject: Reply with quote

yonexsp wrote:

How would you control the overdrive if you fitted the 4 speed gm180 to an V8 SD1?

Simple. I think the overdrive is just a relay in that box. So all you need to do is put a button somewhere for overdrive. It is a bit troublesome to switch the overdrive on/off I think in an automatic. For the button placement you could put such floor switch as in old jaguars to control the overdrive and your left foot would have something to do Very Happy

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Under 4 litre engines are starter motors!!
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Zaphod
SD1 User


Joined: 13 Mar 2007
Posts: 62

PostPosted: Wed Nov 21, 2007 7:38 pm    Post subject: Reply with quote

Its very simple.. these cars did have a button to the left of the gear selector, with 4 written on it IIRC, this locked out the OD unit. I don;t remeber much abojut the ECU that conreoled it apart from it was about the size of an 827 PGMFI fuel relay, with very few pins on it. It would be very easy to control, simply by switching it in and out according to pressure in the 3rd gear hydrailic circuit, beyond that a reverse lockout, and job done really.

Stewart

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Of all the things I've lost I think I miss my mind the most

1992 Citroen XM
1976 SD1 3500
1975 MG Midget
1959 AH Sprite
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OzRover
SD1 User


Joined: 18 Nov 2006
Posts: 3
Location: NSW Australia

PostPosted: Thu Nov 22, 2007 5:51 pm    Post subject: re Reply with quote

The 4 speed th180 is the 4l30e,under GM's new transmission code the 180 is known as 3l30,the th400 is the 3l80 ect.The "e" indicates electronic control.As can be seen in the link below,far more is ecu controlled than 4th gear including up and down shift speeds,even a limp home mode among others depending on what its fitted to.
True it was a stop gap measure, has been replaced with the 5l50e now.Even with the ecu sorted,the core problem is that the bellhousings will not swap due to the oilways being different meaning you still need an adapter plate,the t bar needs 7 positions instead of 6 (see link)and its longer.

f you use a aw71 with a thin adapter plate the length is fine,the tailshaft bolts to the volvo output shaft and the tv cable fits a bw65/66 bracket.The o/d is a button control so no t bar mods needed.

Th700 (4l60) is a little longer,the output shaft has same splines a th180 so a rover output flange slides straight on.Need 7 position t bar and an adapter plate.V6 boxes are far more compact around bellhousing but use a different bolt pattern to v8's so the d&d adapter wont work

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