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Regearing my VVT Daily Driver

  • X8GGY
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03 May 2017 14:16 - 03 May 2017 14:33 #180861 by X8GGY
So, I bought a VVT Jimny as a runaround, and stick some 235/75s on it -



And that obviously affected the gearing, just a little though, I'm surprised how well it went on the standard gearing :)

But, we'd discussed on here that fitting an older (pre-VVT) transfer box and diffs would get my gearing (and speedo) back to normal...

So, today I made a start...



Old (top) transfer box out, and new one (thanks again to J999PRE on here) ready to go under...



With a set of my 'ZookBOB' HD transfer box mounts attached B)



I felt around under the carpet for the screws holding the blanking plate in place (as the VVT transfer box was push-button)

I'd already thrown the trim in with some plating, so it came back nice and shiny!



And then cut the carpet out - good shot!



And then removed the blanking plate...



Which was lightly attached with a sticky gasket, so I pushed it up from underneath...



Sorted... Now for the box then!
Last edit: 03 May 2017 14:33 by X8GGY.

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03 May 2017 14:17 - 03 May 2017 14:30 #180862 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
Continued... (there's a limit on the number of photos per post?)



In goes the box, and the stick pokes through the previously blanked-off hole.



I then lined up the two rubber pieces below the carpet and the plated trim above, and used small screwdrivers to find the hole...



And got some slightly longer coach bolts to go through the whole sandwich...







HD mounts and bushes/bolts underneath...

I then reconnected the intermediary prop from the gearbox to the transfer box (and can confirm it fits Riccy ;) )

And then plugged the speedo feed cable in....



BUT... will have to come back to this lot, once I've sat down tonight and searched this fine forum for the information I need to splice all these to fool the Jimny ;)

I haven't put the other props back yet as I still need to pull the diffs and swap them for older ones, but that's a job for another day... a good start though! B)
Last edit: 03 May 2017 14:30 by X8GGY.

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03 May 2017 16:30 - 03 May 2017 16:32 #180866 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
Reading this old post from Busta -



I think I 'just' need to find out which plug talks back to the ECU and lets it know the transfer box is in four wheel drive - so the one with the 'thick blue and black striped wire with red spots on it' and connect the earlier (round plug between my finger and thumb in the above photo) and later wiring together...

The other plugs will be for the actuator that selects the ratios - 2H, 4H and 4L ?

I should be able to tell by referencing the plugs back to the socket connectors on the VVT transfer box with the solenoid :)

I've PM'ed James J999PRE too as he seems to have historically replied to most posts on this matter :)
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Last edit: 03 May 2017 16:32 by X8GGY.

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03 May 2017 18:24 #180867 by Riccy
Replied by Riccy on topic Regearing my VVT Daily Driver
Thats good news re the intermidary prop fitting ok then. I realised the problems i had was because it was a RW box, hence a SJ casing (i think). Ive got a t-box now, just need the diffs :whistle:

Have a look at the bottom of page 2 of this link. I found out how to fool the 4x4 controller into thinking all was normal. it responded and locked in the vac hubs ok in 4H and 4L.
www.bigjimny.com/index.php/forum?view=to...=7&id=11993&start=12

Riccy.

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus

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03 May 2017 20:43 #180873 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
Thanks Riccy ;)

And thanks to James J999PRE who answered my PM with similar information...

I may have some time in the morning for a fiddle...

... and then hopefully do the diff swaps on Sunday :)

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08 May 2017 17:47 - 08 May 2017 17:50 #181060 by Riccy
Replied by Riccy on topic Regearing my VVT Daily Driver
How did you get on with the swap? Did you try it with just the t-box first? If so i will try it with just the diffs first for comparison.

I picked up some diffs from a guy near Edinburgh who scraps loads of jimnys on sunday. Interesting and sounds like he has loads of jimnys hanging around. Just need time on the weekend to bang it all in hopefully :-)

Keep looking at lockers. Be the ideal time to fit something :whistle:


J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus
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Last edit: 08 May 2017 17:50 by Riccy. Reason: pic failure

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08 May 2017 17:57 #181061 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
Ah, no, I got distracted by one of those pesky lie-in things... 10:30am (normally up at 5:30am six days a week), then a long walk with the dogs swimming in the river, then a full cooked breakfast, and suddenly it was the afternoon! So a bit of DIY to keep Mrs.Bits4Vits happy, then a barbecue and a few beers... B)

Should be psyched up for this week now though?! ;)

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08 May 2017 18:19 #181062 by Riccy
Replied by Riccy on topic Regearing my VVT Daily Driver
Good call ;-)

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus

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10 May 2017 14:54 - 10 May 2017 15:05 #181103 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
One of those days... "one step forward, two steps back..."

Figured I'd do what Riccy suggested above, and put the rear propshaft back in and took it for a test drive...

... only to find it wouldn't go into low box :( The rubber gaitor combined with the closeness of the transfer stick to the hole in the transmission tunnel meant it kept popping out of low...

So, it all came back out again, and I shortened the transfer stick and re-angled it a little, and then re-assembled everything... (My Jimny has a 2" bodylift, and to complicate things the 'old' (pre-VVT) transfer box I got had already been extended for a 3" bodylift)

Then worked out the wiring... as Riccy and J999PRE had said -



I used a large staple (from a staple gun) bent to the right shape to short out the two pins on the left side of the 6-pin plug, and then linked the black and blue wire via the transfer box's 4WD switch (same on an SJ/lobster box then) to earth (on the transfer box HD bracket), and that made everything work - the 4WD light on the dashboard behaved as expected, and the vacuum free wheel hubs clunked into place when 4WD was selected too...

So, out for another test drive...



It's low! A hoot in fact! It accelerates at an alarming rate for a little Jimny! LOL :lol:

Speed becomes a 'problem' though, it does do 70mph, but it's at 4,600rpm! (in fifth!)

But, as a daily driver for pottering around? Hmmm... I'll sleep on it and have another drive tomorrow... It'll be great from the traffic lights?!

It is nice and low for offroad use though? (but then is the standard transfer box up to it?)
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Last edit: 10 May 2017 15:05 by X8GGY.

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10 May 2017 15:06 #181104 by X8GGY
Replied by X8GGY on topic Regearing my VVT Daily Driver
Forgot... the speedo is spot-on though? :huh:

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10 May 2017 16:41 #181108 by 1066Boy
Replied by 1066Boy on topic Regearing my VVT Daily Driver
As long as you don't do any long journeys, I would of though that would be great fun. :)

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10 May 2017 16:53 #181112 by Riccy
Replied by Riccy on topic Regearing my VVT Daily Driver

S200KYS wrote: One of those days... "one step forward, two steps back..."

Figured I'd do what Riccy suggested above, and put the rear propshaft back in and took it for a test drive...



It's low! A hoot in fact! It accelerates at an alarming rate for a little Jimny! LOL :lol:

Speed becomes a 'problem' though, it does do 70mph, but it's at 4,600rpm! (in fifth!)

But, as a daily driver for pottering around? Hmmm... I'll sleep on it and have another drive tomorrow... It'll be great from the traffic lights?!

It is nice and low for offroad use though? (but then is the standard transfer box up to it?)



You should try it with a 1.5 rocklobster box in! :woohoo:

Thats pretty much what i found when i tried it. i think it will still be a little over with the diffs, but not much.

I dont think load will be a massive issue on the t-box, as you are driving it at 0.5x lower than it would have been with its original gearbox to achieve the same speeds (1.5 output on R7me box and 1.0 output on R72). Therefore its under less stress at any speed than it would have been in the original car. Hardcore offroading with lockers might be a bit much for it, but be great for laning :-)

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus

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