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"Valentino" and his MEGA! IRS Tranny

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dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637102
Well, Valentino is not his real name, to protect the innocent,
but he asked me to assemble this tranny to go into his streeter 'super'.

There are not many things inside this tranny that would want anything better.
"V" was very good and had all his parts nice and clean, and after some discussion we settled on the following ratios:
4.125 diff ratio, on a rare ZF swingaxle limited slip.
(yes, in an IRS!...more soon)



FTC 3.778 first,
FTC 2.357 second gear,
ALBINS 1.722 third gear,
and what appears to be an old Hollinger
1.333 straight cut 4th gear.

Did you say 1.33 for fourth?
Yep, thats over 4400rpm at 100km/h!!
westi wrote:That's mad Alan.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637106
My normal first step is to set up the crownwheel and pinion.
This particuar case was quite difficult this time, because the shim that VW used was miles wrong.
After much trial and error I was able to use a 0.15mm shim to get the pattern as close as I could,
and used .006" back lash as the factory minimum.



Normally the shim is around the 0.5 to 0.7mm with this particular tooth form.
But as it was the contact was right on the tip of the pinion.
VW probably set it this wat because it was within their spec for silent operation with about 50hp.
It WAS centred height wise, but with so little contact it would have failed with the power that Valentino has.



Each time the pinion shim is changed,
te backlash must be re-set to spec BEFORE checking the contact pattern with bearing blue.
It took me a whole day to get this one sorted.
westi wrote:That's mad Alan.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637107
The next step was to trial assemble the gear stacks and adjust the end clearance of each gear.
I have used the early metal caged bearings throughout:



I drilled holes through the hubs for 1 and 2, and also for 3rd and 4th.





This allows for better oiling of the gear faces under thrust loads.

Here is the first stack trial assembled on the pinion shaft.
westi wrote:That's mad Alan.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637109
Once the end clearances were set and the intermediate housing clearanced for the 1.333 fourth gear,
I scrounged up some missing reverse linkage parts in preparation for the setting of the forks in the jig.





Here you can see the pin that engages the ERCO reverse idler gear:



Steel forks were used for the gear selection, because some are made from a weaker bronze material.

Also the nose cone was machined flat in preparation for the steel thrust plate that helps to retain the main shaft bearing.
Valentino's car has a late model three-bolt nose cone mount,
which actually is the strongest nose cone there is, except less used because it came out on later L bugs.



westi wrote:That's mad Alan.

56astro Custom Title Time!

1,772 posts · joined Aug 2002 ·

#637110
No Junk there!!!!

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637111
Here is the gear set and intermediate housing installed in his case.
Valentino had a salubrious powder coated grey colour for the case, and then polished the ribs.

The nose cone will be done as well after it returns to Sydney.



The clutch fork has been fully welded,
and the long arm is used for less clutch pressure on the pedal.



westi wrote:That's mad Alan.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637113
Well, that last shot showed a peek of those massive side covers.

Them, and the special adapter stubs, are what allows the Swingaxle ZF to be used in an IRS tranny.





There is a support bearing inside the covers,
retained with a couple big circlips.
The taper on the tip is to enable the assembly into the swingaxle fulcrums, sight unseen.
A bit difficult, but it all went together well.

These ones take a Kombi CV joint, and are about 2" shaft size.
No snapping off these suckers.

Ahh! All done!

westi wrote:That's mad Alan.

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#637126
i guess someone has to ask, sooooooooooo with a user name like mine, here 'tis,

why the swinger ZF only to go irs?

nbturbo Veteran Volks Folk

2,171 posts · joined Dec 2002 ·

#637127
Dave-my jeans are now officially "creamed"-nothing more to say.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637135
Apparently the swinger ZF inside is stronger,
plus no more broken splines at the CV flange.
Better support with the bigger bearing too.
westi wrote:That's mad Alan.

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#637142
ahh 👍, oh, and very noice as usual........

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#637168
You mean those output axles are UNBRAKO !!!

Fantastic Dave
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#637193
valentino the muffler man?
EVERLAST CONCRETE TANKS
1800 552 123

Turbo54 Veteran Volks Folk

2,220 posts · joined Jul 2004 ·

#637231
19" wheels Valentino?
C'mon kids gather round,
there's a new sensation hitting town,
It's moving straight, low to the ground,
it'll pick you up when your feeling down.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637258
Muffler man?
No not 19" wheels.
westi wrote:That's mad Alan.

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 ·

#637261
Mmm, this is a tasty burger!
Pay your debts, CxxT

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#637266
dangerous wrote:Apparently the swinger ZF inside is stronger,
plus no more broken splines at the CV flange.
Better support with the bigger bearing too.
From memory Jeff had something very similar
in his green beetles all those years ago.
westi wrote:That's mad Alan.

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#637269
dangerous wrote:
dangerous wrote:Apparently the swinger ZF inside is stronger,
plus no more broken splines at the CV flange.
Better support with the bigger bearing too.
From memory Jeff had something very similar
in his green beetles all those years ago.
nah.......straight irs ZF with type1/kombi output shafts.(still there, but don't tempt me yet, i have to finish fixing the notch first🤪)

i was telling him about this and your other recent builds (thrust plates etc) today........he likes all the theories, ideas/priciples behind them all as well as the execution of what is learn't..........that's his sort of thing as you prolly know.

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#637271
Jeff should send some of his junk up this way, for a holiday from all those wood shavings.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#637326
BAKAHAG is that reversing a old woman? or taking a punt on one.
EVERLAST CONCRETE TANKS
1800 552 123

humpty Bishop of Volkswagenism

3,336 posts · joined Sep 2002 ·

#637999
matberry wrote:Jeff should send some of his junk up this way, for a holiday from all those wood shavings.
Bugger that.... Jeff should send some of that unused junk my way.... I'm one of the OG Hellbug customers from back in the day.... Hell, I even still have one of the OG stickers on my car!

Thats dedication right there...

Anyway.... That is a very interesting way around the weak link.... But tell me this.... Why use the old ZF and not go with the new tech Quaife?
FUCH your early!

http://www.noh2o.org/

westi what the

1,610 posts · joined Aug 2005 ·

#638028
why does this look like somthing i have seen before.
i think this might be parked in my shop.
i thought it might be some of your handy work involved but wasn't qiuet sure.
we had to make some bracing and other mods.
i will post up some pic's when i get back from fiji.
bula bula.
down sharon.

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#638098
nisa bula westi! where are the side covers from cant find them anywhere?
EVERLAST CONCRETE TANKS
1800 552 123

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#638124
westi wrote:why does this look like somthing i have seen before.
i think this might be parked in my shop.
i thought it might be some of your handy work involved but wasn't qiuet sure.
we had to make some bracing and other mods.
i will post up some pic's when i get back from fiji.
bula bula.
I think that is Henry's handy work you speak of.
That tranny was once in Matt's drag car
and was part of Jeff's contribution to their mid 90's partnership.

Now making a home in another up and coming All Motor car from Sydney(I see all)
westi wrote:That's mad Alan.

humpty Bishop of Volkswagenism

3,336 posts · joined Sep 2002 ·

#638126
dangerous wrote:
westi wrote:why does this look like somthing i have seen before.
i think this might be parked in my shop.
i thought it might be some of your handy work involved but wasn't qiuet sure.
we had to make some bracing and other mods.
i will post up some pic's when i get back from fiji.
bula bula.
I think that is Henry's handy work you speak of.
That tranny was once in Matt's drag car
and was part of Jeff's contribution to their mid 90's partnership.

Now making a home in another up and coming All Motor car from Sydney(I see all)
In that case....

Oh great and wondrous Muffin Man, the see'r of all things good and fast, what praytell is in my future?
FUCH your early!

http://www.noh2o.org/

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#638127
dangerous wrote:
westi wrote:why does this look like somthing i have seen before.
i think this might be parked in my shop.
i thought it might be some of your handy work involved but wasn't qiuet sure.
we had to make some bracing and other mods.
i will post up some pic's when i get back from fiji.
bula bula.
I think that is Henry's handy work you speak of.
That tranny was once in Matt's drag car
and was part of Jeff's contribution to their mid 90's partnership.

Now making a home in another up and coming All Motor car from Sydney(I see all)
yeah Matt's had a similar looking side plate, also IRS of course................sold last spectacular swap meet, dirt cheap too

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#638128
Ahhh the missing links.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#638131
humpty wrote:
dangerous wrote:
westi wrote:why does this look like somthing i have seen before.
i think this might be parked in my shop.
i thought it might be some of your handy work involved but wasn't qiuet sure.
we had to make some bracing and other mods.
i will post up some pic's when i get back from fiji.
bula bula.
I think that is Henry's handy work you speak of.
That tranny was once in Matt's drag car
and was part of Jeff's contribution to their mid 90's partnership.

Now making a home in another up and coming All Motor car from Sydney(I see all)
In that case....

Oh great and wondrous Muffin Man, the see'r of all things good and fast, what praytell is in my future?
I see in your future a 12 second 1600, grass hopper.
(but I can see an 11 second one over here so hurry up!!)
🤓
westi wrote:That's mad Alan.

westi what the

1,610 posts · joined Aug 2005 ·

#638194
nice one.bula bula.
i don't know dave i think that loverly grey would be a hard act to follow.and i have never seen side cover's like this before.even the polished high side bit's on the rib's.the other tranny in the shop ,the one which i am yet to update photo's only because i am away that is in a drag car to be,that box was biult by Mr HS 618.
anyhow i will be back next week.photogragh's tell now lies.
cya
P.S more fun=more sun.i have only heard this about 100 times,i thought i might pass it on.
down sharon.

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#638312
im confused where are the SIDE PLATES from?
EVERLAST CONCRETE TANKS
1800 552 123