Swing Axle vs IRS Technical Topic

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kls
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Post by kls » Sun Jan 22, 2006 11:14 pm

how easy is it to flip the diff if wanted to keep the original box in a staight axle conversion????
maybe one day it will be done!!!!!!!!!!!!!!!!!!!!

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yachtybugger
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Post by yachtybugger » Mon Jan 23, 2006 6:34 am

You take it out of the right side and put it back in on the left side.

Details here http://www.bus-boys.com/instruct-swing-pg3.htm

These are actually pretty simple, straightforward and easy to follow instructions for the whole job :wink:

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Flex
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Post by Flex » Mon Jan 23, 2006 8:09 pm

Hi Guys,

flipping the backplates is more a question of your ride height.
LOW - cable underneath
lowered slightly - cable up

Caution ! When you flip the backplates the brake actuator flips with.Then the ventilator of the actuator faces down.The normal ventilation in this position is impossible.
It`s like you fit the callipers at the front right to left and left to right(ventilators down)...

typ-3 & 03 brake actuators (22mm) are different to the bug or Porsche 944 ones.The ventilator is upside down !
So when you flip bug backplates you can drive typ-3 cylinders...or when you flip typ-3 backplates Porsche 944 (19mm) cylinders :roll: :?: :!:

Hope you get what I wanted to say ;)

Greetz,Felix


umdb03
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Post by umdb03 » Tue Jan 31, 2006 1:25 pm

Which is the best gearbox for the straight axle conversion?

Been told a 1500 bug box? Is this the same as the 68 bug box as mentioned on the Bus Boys website?

Anyone in the Maidstone area got one they dont want?

mark

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yachtybugger
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Post by yachtybugger » Tue Jan 31, 2006 4:55 pm

That is the normal recommendation but I think it depends on what engine you will be running.

I've heard people say the 1500 box can have to tall a 4th for a stock 1200/1500/1600 engine, especially on long hills.

In the same breath, I've heard of folk running a 1300 box with no problems :?

I have a late 1300 mexican box in my Crewie but I haven't had it off the driveway yet to try it.....................we'll see :D


umdb03
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Post by umdb03 » Tue Jan 31, 2006 5:01 pm

1300 box....

Yes, just been told that a 1300 box may be a better option.

Know someone thats got a 1500 box I can have & get recon'd but I dont have any box at all I can exchange & a surcharge of £150 without Id rather avoid.

mark

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yachtybugger
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Post by yachtybugger » Tue Jan 31, 2006 5:09 pm

One added bonus of 1300 boxes is they are cheap as chips :D

I got mine for 50 quid complete with axles and drums (I sold the drums on :wink: )

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BROOKSY
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Post by BROOKSY » Tue Jan 31, 2006 8:11 pm

umdb03 wrote:Which is the best gearbox for the straight axle conversion?

Been told a 1500 bug box? Is this the same as the 68 bug box as mentioned on the Bus Boys website?

Anyone in the Maidstone area got one they dont want?

mark
It also depends on what tyres you are going to fit if they are low profile you can get away with taller gearing. Mike


umdb03
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Post by umdb03 » Wed Feb 01, 2006 8:58 am

Im gonna be running stock rims & tyres @ the mo.

The 1500 box Ive been offered to use as an exchange is a IRS box with dual side covers (& v good price).

But someone else says they may be able to get me a 1300 box (price unknown as yet) but if its gonna be around the £150 then I may as well pay the exchange surcharge.

Is it gonna be that much of a difference between 1500 & 1300?

I need to sort this ASAP as Ive got no transport without the van.

HELP :!:

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yachtybugger
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Post by yachtybugger » Wed Feb 01, 2006 5:30 pm

Well, as far as I know, you can't use an IRS box for a straight axle conversion so maybe your option for the 1300 box is the best solution.


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Post by tyler » Wed Feb 08, 2006 9:28 pm

yachtybugger wrote:Well, as far as I know, you can't use an IRS box for a straight axle conversion so maybe your option for the 1300 box is the best solution.
i think im rite in saying that irs boxes are able to be converted to s/a by changin the side plates asd the axles obviously!

flippin the diff is easy - i unbolted the side plate from a box cos i needed it for another box and the whole diff came with it! coz the bearing was tight in the side plate! simply undo both sidesplates and take out diff and replace it in the opposite side and re fit side plates on their original sides coz of the clutch cable thingy!
some say tha the backlash? should be reset when flipping diffs others say that coz your using basicly the same setup then it will be fine


IMO the 1500 box is best suited to the van cos its got lower 1st 2nd and 3rd gears and a higg 4th that almost matches the '03s box so you get accekeration like a 1300box and cruzin like a 1303s ! and about half the price!

my original '67 box is the same gearing as a 1500 too so if your 'box is ok (mine jumped out of 4th inder 1800 t4 power!) and its in a late model splity then you could have a 1500 box already!

to see what youv got try this (nicked from vzi!)
If you take the drain plug out and using a torch you should be able to see the teeth on the crown gear. Put a mark on one of the teeth with tipex(let it dry). Rotate the input shaft with the box in gear and you should be able to count the teeth on the ring gear.

35 teeth = 4.375:1 (1200/1300)
33 teeth = 4.125:1 (1500)
31 teeth = 3.88:1 (1600GT/1303s)


tyler
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Post by tyler » Wed Feb 08, 2006 9:29 pm

so what do you get in a SA kit?
and for how much?


gtisplit
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Post by gtisplit » Fri Feb 17, 2006 6:07 pm

bit new to this myself and i`ve decided on going down the irs road, does anyone know if a type 3 gearbox is compatible for an irs set up, and if not what should i be looking to pay for a 1300 gearbox.
cheers
low down and dirty

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BROOKSY
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Post by BROOKSY » Fri Feb 17, 2006 6:55 pm

gtisplit wrote:bit new to this myself and i`ve decided on going down the irs road, does anyone know if a type 3 gearbox is compatible for an irs set up, and if not what should i be looking to pay for a 1300 gearbox.
cheers
as long as its an IRS box It doesnt matter which vehicle its off. Mike


crossy
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Post by crossy » Thu Mar 02, 2006 7:57 pm

Has anyone fitted the creative kit to a pre 57 split with the tubular support across the chassis instead of the top hat section sort? The creative website says it can be done with 'minor' extra work, just wondering how much extra work is required.

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