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UPDATE: 3rd August 2009 - PLEASE READ THE ENTIRE THREAD INCLUDING COMMENTS BEFORE ATTEMPTING TO MODIFY THE MK2 GEARBOX MOUNT TO FIT WITH ABS. IT WILL CAUSE DAMAGE TO YOUR GEARBOX. SEE COMMENTS TO FIND OUT MORE.
Evening all
As you may or may not be aware, i'm running a slightly adventurous setup on my valver. I'm running a JC5 laguna gearbox at the moment, never heard anyone else try one so i thought i'd give it a bash.
As it's out of a later year car than a valver (probably '98 or above), the gearboxes are very slightly different. They share one thing in common with MK2 clio boxes, and thats the top mount bolt hole spacing, as i have discovered today.
This means, you can run any gearbox (providing it fits) from a MK2 Clio, or from any other Renault that shares the same bolt hole spacing as a MK2 Clio gearbox (Laguna, not sure of any others?).
If you have a valver without ABS, the mount is a direct replacement for your existing gearbox mount and battery tray. Below is a pic of a MK2 gearbox mount and tray, which i picked up from a scrappy for £20

Bottom part of the mount:

Couple of quick snaps before i started fitting it:



If, however, you do have ABS in your valver, then it's a little bit more complicated. Basically, the mount just does not fit, as it fouls on the ABS system in several places, see below
Battery tray fouling on the ABS unit:




Also, the bottom part of the mount fouls on the ABS unit, meaning the bolt holes do not line up and you can't get the bolts in:


So, i sat down and had a little think about how it would work. After all, the whole reason i wanted a top mount was because i've been running with just a Renault 19 bottom mount and a standard dogbone mount for a few months. The engine wasn't sitting on the right place and kept knocking if you violently jabbed the throttle. Not ideal.
Anyway, i came up with a plan and decided i was going to have to chop the mount. The result:
Before -

After -

And the same goes for the Battery tray.
Before -

After -



Trial fitted the battery:

I was then able to get the bottom part of the mount to bolt on successfully.



Next was the battery tray:

Again, this fit with relative ease and no longer fouled on the ABS unit.
After trying to fit the battery tray i encountered a few issues. Basically i couldn't get the top bolt hole to line up whilst all the others were loosely bolted in. Whether or not the bolt spacing is slightly different for a MK2 battery tray, i'm not so sure, or maybe i just wasn't lucky. In the end i just gave up and left the top bolt out. I also had to leave one of the bottom bolts out as it would just not go in.
I've only got two bolts holding the battery tray in, not sure whether this will be strong enough, only time will tell.
Anyway, i got the battery back into place. The MK2 mount uses the same clamp system, i used the MK1 clamp here.

Managed to get it all back together -



So there you go, you can modify the mount to fit if you have the rather annoying ABS unit in your valver! Again, i'm not sure how strong it will be seeing as though i've chopped one of the supports for the box and only have a couple of bolts holding the tray on. Combined with the R19 front mount, hopefully this will be sufficient.
I've road tested it tonight and the engine feels MUCH tighter, gear changes are definately smoother (If they weren't already smooth enough with my mint laguna box!)
Tried jabbing the throttle and it didn't rip the tray off, nor did it knock, so it seems to be a success.
Next job on the list is to lower the back end, thats tomorrows job!
I hope this guide helps anyone out there who is wondering about running a 172 box in a valver, for example, or in my case, a laguna box.
Thanks for reading
Evening all

As you may or may not be aware, i'm running a slightly adventurous setup on my valver. I'm running a JC5 laguna gearbox at the moment, never heard anyone else try one so i thought i'd give it a bash.
As it's out of a later year car than a valver (probably '98 or above), the gearboxes are very slightly different. They share one thing in common with MK2 clio boxes, and thats the top mount bolt hole spacing, as i have discovered today.
This means, you can run any gearbox (providing it fits) from a MK2 Clio, or from any other Renault that shares the same bolt hole spacing as a MK2 Clio gearbox (Laguna, not sure of any others?).
If you have a valver without ABS, the mount is a direct replacement for your existing gearbox mount and battery tray. Below is a pic of a MK2 gearbox mount and tray, which i picked up from a scrappy for £20

Bottom part of the mount:

Couple of quick snaps before i started fitting it:



If, however, you do have ABS in your valver, then it's a little bit more complicated. Basically, the mount just does not fit, as it fouls on the ABS system in several places, see below
Battery tray fouling on the ABS unit:




Also, the bottom part of the mount fouls on the ABS unit, meaning the bolt holes do not line up and you can't get the bolts in:


So, i sat down and had a little think about how it would work. After all, the whole reason i wanted a top mount was because i've been running with just a Renault 19 bottom mount and a standard dogbone mount for a few months. The engine wasn't sitting on the right place and kept knocking if you violently jabbed the throttle. Not ideal.
Anyway, i came up with a plan and decided i was going to have to chop the mount. The result:
Before -

After -

And the same goes for the Battery tray.
Before -

After -



Trial fitted the battery:

I was then able to get the bottom part of the mount to bolt on successfully.



Next was the battery tray:

Again, this fit with relative ease and no longer fouled on the ABS unit.
After trying to fit the battery tray i encountered a few issues. Basically i couldn't get the top bolt hole to line up whilst all the others were loosely bolted in. Whether or not the bolt spacing is slightly different for a MK2 battery tray, i'm not so sure, or maybe i just wasn't lucky. In the end i just gave up and left the top bolt out. I also had to leave one of the bottom bolts out as it would just not go in.
I've only got two bolts holding the battery tray in, not sure whether this will be strong enough, only time will tell.
Anyway, i got the battery back into place. The MK2 mount uses the same clamp system, i used the MK1 clamp here.

Managed to get it all back together -



So there you go, you can modify the mount to fit if you have the rather annoying ABS unit in your valver! Again, i'm not sure how strong it will be seeing as though i've chopped one of the supports for the box and only have a couple of bolts holding the tray on. Combined with the R19 front mount, hopefully this will be sufficient.
I've road tested it tonight and the engine feels MUCH tighter, gear changes are definately smoother (If they weren't already smooth enough with my mint laguna box!)
Tried jabbing the throttle and it didn't rip the tray off, nor did it knock, so it seems to be a success.

Next job on the list is to lower the back end, thats tomorrows job!
I hope this guide helps anyone out there who is wondering about running a 172 box in a valver, for example, or in my case, a laguna box.
Thanks for reading