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300GD Kastenwagen, shouldn't do it, but...
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Posted 5/29/2015 5:02 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

Not much going on with the Kasten, other cars in need of inspection take up my free time...

Anyway, today I did trade a couple of 5,28:1 (37:7) axles for my Rotzler winch.
The 5,28:1 axles will give me correct gearing when running 255/85 R16 tires with om617a / 711.113 engine transmission combo.

gr. bram

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#228383 - in reply to #108392
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Posted 5/30/2015 9:05 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

You worry me a bit. When I did my sums I worked out that with a similar combination i could use 4.89s and I would be in the torque sweet spot at 110km/ hr. My tyres are 235 85 16.

I am halfway through a complete rebuild and have fitted a 711.113 which I have never tried before. It was always a 4 speed.

Why did you opt for the lower ratio?
#228390 - in reply to #108392
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Posted 6/20/2015 3:55 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Boy G - 5/30/2015 3:05 PM

You worry me a bit. When I did my sums I worked out that with a similar combination i could use 4.89s and I would be in the torque sweet spot at 110km/ hr. My tyres are 235 85 16.

I am halfway through a complete rebuild and have fitted a 711.113 which I have never tried before. It was always a 4 speed.

Why did you opt for the lower ratio?


You may have a point here.

With combo om617a, 711.113, 5,28 axles and 255/85/R16 tires, I think I'll doing 87km/hr @ 2500rpm (3000rpm will do 104 km/hr)

In comparison above combo with 4,88 axles will give me 94km/hr @ 2500rpm (3000rpm will do 113 km/hr)

I'll start with using my current 4,88 axles (as planned), comfortable knowing a have a set of 5,28's at hand when acceleration lacks
#228680 - in reply to #228390
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Posted 6/21/2015 6:17 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

bram_r - 6/19/2015 9:55 PM

Boy G - 5/30/2015 3:05 PM

You worry me a bit. When I did my sums I worked out that with a similar combination i could use 4.89s and I would be in the torque sweet spot at 110km/ hr. My tyres are 235 85 16.

I am halfway through a complete rebuild and have fitted a 711.113 which I have never tried before. It was always a 4 speed.

Why did you opt for the lower ratio?


You may have a point here.

With combo om617a, 711.113, 5,28 axles and 255/85/R16 tires, I think I'll doing 87km/hr @ 2500rpm (3000rpm will do 104 km/hr)

In comparison above combo with 4,88 axles will give me 94km/hr @ 2500rpm (3000rpm will do 113 km/hr)

I'll start with using my current 4,88 axles (as planned), comfortable knowing a have a set of 5,28's at hand when acceleration lacks :)


I will watch with interest.
#228682 - in reply to #228680
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Posted 6/22/2015 10:07 AM
diesel_jim
Veteran




Date registered: Jan 2014
Location: N Wiltshire. UK
Vehicle(s): LR Defender 110, 1989 W460 SWB
Posts: 114
100
Re: 300GD Kastenwagen, shouldn't do it, but...

FWIW, all the landrovers I've had, when I've upgraded to 255/85's from the factory 235's (or 7.50's, more or less the same diameter) the gearing has been spot on.

With one of my Tdi's, the engine struggled a bit, but a quick tweek of the fuelling and boost and it pulled even better than it did before.

When I was wet behind the ears, and changed to bigger tyres for the very first time, I changed the transfer box (for those interested, from a 1.4:1 to a 1.6:1) thinking it would be better.... the thing ran out of revs at about 63mph, it was horrible. OK, went up through the box like a gocart, but in 5th it just ran out of revs.

Once I fitted a 1.4 box back on, and with a little engine fettling, it pulled fine.

Later defenders I've had (300Tdi and Td5) have all pulled the 255 gearing just right... it even compensated for the speedo inaccuracy and became spot on!
#228690 - in reply to #108392
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Posted 6/23/2015 6:28 AM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

I had the same experience with this same 617a, with a 4 speed and 5.33 diffs.

Made noise with diesel.
#228706 - in reply to #108392
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Posted 9/9/2017 7:08 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

Slow progress, but progress nonetheless.

Was able to prep my frame for sandblasting and painting.
Also stripped the paint from the axles to have them painted as well.

I did drill holes in the spring perches of the axles to have some extra cleaning opening as mud builds up under these perches, but have enough metal and to be able to withstand contact with the bumpstops on hard landings.
I made a 1 1/4" (31,8mm) hole in the front spring perch and a 1 5/8" (41,3mm) hole in the back. See also http://www.hehlhans.de/teilenummer.htm#b41 and http://www.hehlhans.de/tipp10.htm.

The frame I welded additional reinforments to on the front. Welded on new cable/brake line clamps and put some spacers under them to give better cleaning opportunities.
Also welded a PTO bearing bracket to it and made an indent one the front crossbar to clear the PTO shaft to the front.







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#237154 - in reply to #108392
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Posted 9/10/2017 1:22 PM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

I wondered how far you had got, as I have almost the same project currently which also should be titled " - shouldnt do it but..."

Your progress looks good. Any more panel work since your last update?

#237161 - in reply to #108392
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Posted 9/11/2017 1:27 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Boy G - 9/10/2017 7:22 PM

I wondered how far you had got, as I have almost the same project currently which also should be titled " - shouldnt do it but..."

Your progress looks good. Any more panel work since your last update?



The body is sanded and should be ready for paint.

However, I want to do some trial fitting on the chassis for installing some stuff (which may lead to some cutting and welding), before I let it paint.

Next thing is taking a whole bunch of brackets and such to powdercoating, so I can start working on a 'rolling chassis'.
That would make life a lot easier in my shed

gr. Bram
#237164 - in reply to #237161
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Posted 4/24/2018 3:32 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

Finally got rid of some other project on my car lift.

Hello Kastenwagen-chassis, ready for build up now:
Axles are now installed, hoping to add some parts every week from now.






(IMG_0846 (Small).JPG)



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#239005 - in reply to #108392
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Posted 4/27/2018 12:13 PM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Weekly updates from now Bram?
#239021 - in reply to #108392
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Posted 4/27/2018 12:19 PM
Boy G
Expert


Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Btw Bram, re our discussion previously on diff ratio, i have almost finished my rebuild and it goes like hell.....for a 460 anyway.

Although mine is swb, 5th gear is useable and strong. I am very happy with it.
#239022 - in reply to #108392
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Posted 5/13/2018 4:24 AM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Boy G - 4/27/2018 6:13 PM

Weekly updates from now Bram?


Almost every week parts are installed on the frame, but not everything is worth posting a picture.
Hoping to have the chassis on its wheels next week.

Boy G - 4/27/2018 6:19 PM

Btw Bram, re our discussion previously on diff ratio, i have almost finished my rebuild and it goes like hell.....for a 460 anyway.

Although mine is swb, 5th gear is useable and strong. I am very happy with it.


Really good to hear.

I think for now my tire choice will be close to 31" (235/85 R16 or 7,5R16) and then my current axle will do as well as your G does.

For 33" or 35" tires, I think I need to go back in ratio.

But first it's time to get the G running

Edited by bram_r 5/13/2018 4:32 AM
#239140 - in reply to #239021
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Posted 5/13/2018 10:37 PM
Fernando BR



Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

In my 300GD (602A) with 30,5" tires and 711117 - 113 , i have 110 km/h (GPS) at 3000 in 5sp. Very nice power on 5th gear even at 70 Km/h. My axles are 4,9:1 . Cruise speed is 105 km/h at 2800 rpm , it keeps temp almost in the middle of gauge , of course sometimes i go near 120 Km/h , in that case temp will increase to the gauge mark after the center if i stay more than +/- 5 minutes at that spped. Think i need 32" , the case is that i dont want to loose 3" of torque and those BFs i bought were on sale price !
#239151 - in reply to #108392
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Posted 5/15/2018 4:06 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Thanks Fernando. Looks like you got your om602a configuration figured out.
A little larger tire could indeed bring the rpm's down a little for highway cruising, but if you're happy with the current acceleration (don't know if you do a lot of towing), you may like to keep it this way.

To my belief I think you installed a custom 2,5" exhaust correct?

gr. Bram
#239165 - in reply to #108392
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Posted 5/15/2018 11:32 PM
Fernando BR



Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

No, Bram , me and wife we use to "travel offroad" , it means we use to do offroad trails crossing the mountains and at the end of the day we stop at a small bed&breakfast or hotel. Other hand speed limit here on pavemented roads is in general 110 Km/h , sometimes 130 Km/h. For me 105 km/h is ok , i like to look at the landscape , listem music.
A lot of wife"s luggage for sure!
Anyway on the next tires change i will go to 32".
#239169 - in reply to #108392
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Posted 5/15/2018 11:43 PM
Fernando BR



Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

About 602A exhaust , i saw you asked that , i used original 2.5" sedan exhaust at turbo conection at first 80 cm . After that i customize a 2.5" tube and muffler . Almost the 300GD original path. At the very end i did not use the "L" shape and stoped straight after the diesel tank. Each head , a different idea,,,

Edited by Fernando BR 5/16/2018 9:26 AM




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#239175 - in reply to #108392
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Posted 6/15/2018 6:42 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
Re: 300GD Kastenwagen, shouldn't do it, but...

Boy G - 4/27/2018 6:13 PM

Weekly updates from now Bram?


Well, a lot of small updates, but not everything is worthly posting on the forum.
Sorting out a lot of small details and parts, but it slowly coming together as a rolling chassis.

Pretty soon the drivetrain can be put in and the body can be fitted for final mocking up.

Edit: something's going wrong with uploading of pics. Will try again shortly.

gr. Bram



Edited by bram_r 6/15/2018 6:45 PM
#239413 - in reply to #239021
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Posted 6/16/2018 2:04 AM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
RE: 300GD Kastenwagen, shouldn't do it, but...

pics:
#239415 - in reply to #108392
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