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4 link rear in 80

Posted: Tue Jan 10, 2006 7:07 pm
by crankycruiser
Well i am in the process of getting my 80 engineered and they want me to move all the rear arms so that they sit flatish..

Well i figure that if i am goin to that extreme that i may as well sticka 4 link in the bum...

Wats involved???

Posted: Tue Jan 10, 2006 8:03 pm
by guzzla
not sure what you mean dude, you already have a 5 link and how does he expect you to make the arms sit flatter unless you put in after market ones to push the diff back?

cheers,
nathan

Posted: Tue Jan 10, 2006 8:15 pm
by RV80
I think he means, build a "A"-frame. I know in Japan they sell bolt in A-frames... As for getting the trailing arms sitting flatter then is the only thing i've seen. http://www.man-a-fre.com/pa/4plus80seri ... ackets.htm

Posted: Tue Jan 10, 2006 9:49 pm
by crankycruiser
guzzla wrote:not sure what you mean dude, you already have a 5 link and how does he expect you to make the arms sit flatter unless you put in after market ones to push the diff back?

cheers,
nathan
Well by puting longer bottom arms in for an a frame then they would be on less of an angle...

Posted: Tue Jan 10, 2006 9:50 pm
by crankycruiser
Thanks RV..

any idea where those drop arms thingys are from??

Posted: Tue Jan 10, 2006 9:57 pm
by RV80
The USA and there not cheap.

Posted: Wed Jan 11, 2006 10:35 am
by crankycruiser
Anyone? :?:

Sumone must have some advice n how to do this...

Posted: Wed Jan 11, 2006 10:48 am
by guzzla
i gidit now :oops:

they got some good $hit on that site.

Posted: Wed Jan 11, 2006 11:39 am
by Modified Toy
The only thing you can really do is drop the trailing arm hangers on the chassis rail or move the lower hangers forward so you can put longer arms in the bottom to decrease the angle,but if your going to that hassle you may aswell fit an A frame to the top to.Have you been and seen a different engineer to see if he say's anything about it?

Posted: Wed Jan 11, 2006 1:55 pm
by guzzla
how much lift have you got tho develope this problem :?:

Posted: Wed Jan 11, 2006 4:18 pm
by crankycruiser
guzzla wrote:how much lift have you got tho develope this problem :?:
7 inches

Posted: Wed Jan 11, 2006 4:19 pm
by crankycruiser
Modified Toy wrote:The only thing you can really do is drop the trailing arm hangers on the chassis rail or move the lower hangers forward so you can put longer arms in the bottom to decrease the angle,but if your going to that hassle you may aswell fit an A frame to the top to.Have you been and seen a different engineer to see if he say's anything about it?
This is wat i wouldnt mind doin.. this sorta set up.. but not quiet as extreme..

Image

Image

Posted: Wed Jan 11, 2006 4:21 pm
by crankycruiser
My idea is that if i do a 4 link then the bottom arms will need to be longer and therefore the angle of the arms is reduced...

Which is wat the engineer is worried about

Posted: Wed Jan 11, 2006 4:38 pm
by guzzla
looks like hes moved the mounting points on the chassis for the lower arms about 500mm to the front. you'd want some strong ass lower arms cos i reckon they'd be landing on rocks all the time wouldnt you ?

BLING setup tho :cool:

Posted: Wed Jan 11, 2006 5:22 pm
by RV80
Are those pics of Gigantor?

Posted: Wed Jan 11, 2006 6:52 pm
by Cliffy
RV wrote:Are those pics of Gigantor?
yep!

Posted: Wed Jan 11, 2006 6:53 pm
by Modified Toy
The pinion would have a lot of up and down movement because the top A frame arms are a lot shorter than the bottom.I now there is a measurment around on how close in lenght the top and bottom arms have to be and how far apart the top and bottom arms have to be where they mount on the chassis.

Posted: Wed Jan 11, 2006 7:29 pm
by RV80
I dont see any point in making the lower arms longer and leaving the uppers the same length. Is there enough room to turn it into a 4-link but without using an a-frame. By using lower arms up top centred on the diff and angled out to the chassis rails?

Posted: Thu Jan 12, 2006 8:56 pm
by Thor
visit pirate and download the 4 bar link calculator - it has anti-squat, roll axis.etc outputs after you input the lengths of the arms and other bits and pieces.
i don't know about having short a-frame arms as said, poor pinion! :?
looks like it may have been fuel tank related...

4 link

Posted: Fri Jan 13, 2006 8:08 pm
by CHILLI 2
What a dodgy setup i cant believe this guy has moded so much and still has the proportioning valve still hooked up, as if it would work properly!!!

Posted: Fri Jan 13, 2006 11:14 pm
by RV80
That car is dead at the moment so the proportioning valve doesnt matter.