Outer Limits 4x4 Board

Posted: **Sat May 26, 2007 8:39 pm**

hey i am looking at putting 80 series diffs with coils on my middy just wondering if any one has done it or any one just done a hole leaf to coil conversion i am looking at doing it in about six months or so.......

so at this time i am jsut trying to figger stuff out. you know learn something new everyday.

cheers

Posted: **Sat May 26, 2007 9:16 pm**

I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though

Posted: **Sat May 26, 2007 10:14 pm**

Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though

I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy, because it alters the track. And it is very hard to get it all approved doing a coil conversion.
BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go. From what I understand is that it would be registered as an 80 so track is not a problem.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion, on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.
I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.

Posted: **Sat May 26, 2007 10:17 pm**

midi73 wrote:
Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though
I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.
BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.
I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.

yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?

Posted: **Sat May 26, 2007 10:24 pm**

Tiny wrote:
midi73 wrote:
Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though
I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.
BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.
I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.
yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?

Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.

Posted: **Sat May 26, 2007 10:36 pm**

midi73 wrote:
Tiny wrote:
midi73 wrote:
Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though
I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.
BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.

you need to find and chat to JOHN BUTLER hes got and done it all to his comp spec middy.........search is you friend
I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.
yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?
Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.

Posted: **Sat May 26, 2007 10:36 pm**

midi73 wrote:
Tiny wrote:
midi73 wrote:
Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though
I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.

BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.

I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.
yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?
Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.

you need to find and chat to JOHN BUTLER hes got and done it all to his comp spec middy.........search is you friend

Posted: **Sat May 26, 2007 10:40 pm**

midi73 wrote: Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.

makes sense, taking a bit out of the back of the wheel arch will be easy, didnt realise there was so little in the WB

Posted: **Sat May 26, 2007 11:39 pm**

MUSS wrote:
midi73 wrote:
Tiny wrote:
midi73 wrote:
Tiny wrote:I presume you want to use the whole 80s set up with radius arm front, 5 link rear, plowy (search members section) did the conversion using the 80s gear on a 40s that turned out very well, would help if you can try and get the mounts from the chasis of an 80s to use though
I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.

BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.

I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.
yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?
Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.
you need to find and chat to JOHN BUTLER hes got and done it all to his comp spec middy.........search is you friend

No he hasnt. John did a coil conversion on 70 diffs. not 80 diffs. He also has a rangie aframe in the rear. and bundy setup in the front.

Posted: **Sat May 26, 2007 11:43 pm**

Tiny wrote:
midi73 wrote: Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.
makes sense, taking a bit out of the back of the wheel arch will be easy, didnt realise there was so little in the WB

No me either until I started looking into it. The only problem that I can see is the fuel filler and flap on the drivers side. 100mm might cut right through it.
There is another post going at the moment that I have posted in. Evil73 has done the conversion. So I am interested to here what he has to say.

Posted: **Sat May 26, 2007 11:43 pm**

midi73 wrote:
MUSS wrote:
midi73 wrote:
Tiny wrote:
midi73 wrote: I assume you are not in QLD. I am going to do this conversion to my middy soon. The problem is that in QLd it is near impossible if not impossible to put 80 diffs under a middy and it is very hard to get it all approved doing a coil conversion.

BUT from my research it is fairly easy to get it passed, putting the middy tub onto an 80 series chassis, so this is the way that I am going to go.
That being said, I went ahead and bought all the 80 series mounts that you need to do a coil conversion on a cut up chassis, before I did my research. So these mounts are now for sale if you want them, and I am now looking for a complete (uncut, but bare) 80 series chassis.

I can give you any info that I have found out if you want it.
Send me a PM and I will give you my phone number, or post up questions and I will answer them as they are asked.
Cheers.
Dave.
yeah in sydney mate, so things like that are a little easier to get passed no doubt, out of interest if it is that hard to get the coil coversion passed, how are DOT going to like the chassis being shortened?
Aha. good question. But the chassis is not going to be shortened, except for the overhang at the back, (which aparently is not a problem).
The wheelbase is 200mm longer than the middy. I will be mounting the cab onto the chassis back 100mm (someone has done this on a 75 ute). Then I will take 100mm out of the back of the rear guards. I have not worked this all out properly yet, but I cant see any real reason it wont work on a middy as well as it did with his 75. Just a lot more work.
you need to find and chat to JOHN BUTLER hes got and done it all to his comp spec middy.........search is you friend
No he hasnt. John did a coil conversion on 70 diffs. not 80 diffs. He also has a rangie aframe in the rear. and bundy setup in the front.

ha ha i never said he did.... just that hes done the coil conversion

Posted: **Sat May 26, 2007 11:46 pm**

I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben

Posted: **Sat May 26, 2007 11:47 pm**

Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben

mate you do realise you gotta post up pics.......... middy porn

Posted: **Sat May 26, 2007 11:48 pm**

Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben

I just posted you a few questions in the other thread. Would be interested to here what is involved.
Cheers.
Dave.

Posted: **Mon May 28, 2007 5:53 am**

yeah i live in queensland well going to have to think of something else any ideas

Posted: **Mon May 28, 2007 10:01 am**

Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben

Did you just say Datsun bits???

Posted: **Mon May 28, 2007 10:06 am**

sierrajim wrote:
Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben
Did you just say Datsun bits???

UMMMMMMMMM................................NO

Ben

Posted: **Mon May 28, 2007 11:51 am**

Evil 73 wrote:
sierrajim wrote:
Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben
Did you just say Datsun bits???
UMMMMMMMMM................................NO

Ben

Hey Ben when you said custom mounts did you mean reusing mounts or did you make up totally new ones? Could I see some pics of how it all fits together. Particularly the rear guards.
Cheers.
Dave.

Posted: **Mon May 28, 2007 8:48 pm**

Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben

Did you just buy this if Tim in Traralgon, soundsa allot like his unfinished project....

Posted: **Tue May 29, 2007 8:59 am**

Tazz wrote:
Evil 73 wrote:I've got a middy on an 80 chassi in melbourne that in a couple of months time will be heading to the engineers for the sign off, its running a vs series iii 5 ltr into a turbo 700 and a gq transfer, its basically the middy tub on a 80 chassi with custom mounts and alot of custom gaurd work.

Ben
Did you just buy this if Tim in Traralgon, soundsa allot like his unfinished project....

Funny thing is its also a lot like Ben's (Evil73's) other unfinished project. But yes you're right.

Posted: **Tue May 29, 2007 5:01 pm**

does any one have a photo of john butlers under carrage (middy's) with the cross member in it, or know what he did to move it? thats really the only thing holding me up. as the front raduis arms and the GB X-member mount in the same place.

Posted: **Tue Jun 05, 2007 5:07 pm**

Thommo 73 wrote:does any one have a photo of john butlers under carrage (middy's) with the cross member in it, or know what he did to move it? thats really the only thing holding me up. as the front raduis arms and the GB X-member mount in the same place.

I noticed that as well. I think you will find that the bundy radius arms are shorter than the 80 arms, which would fix this problem. John used bundy front end.
The other thing you could do is move the diff forward enough to clear the cross member.
Are you going to use 80 or 70 steering box, as they are mounted in a different spot. If you use 70 box you could use the 79 swivel hub arms that conect the draglink. on the 80 the draglink is on the front and the steering arm is on the back, where as on the 79 the draglink is on the back and steering arm is on the front, therefore allowing you to use your original steering box. I worked out that it could allow enough room to move the diff forward as well.

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