Manual converting a jzx.

[kindaflush]

hi all, im a newbie to this site, so hope i dont stuff up and put things in the wrong areas. Anyway, im looking at getting a jzx100 chaser or the mark II. either one im wanting to be turbo. How hard is it to manual convert one of these cars? also if anyone has a rough cost to perform it would be nice, and how easy is it to source the necessary parts?
thanks.

[dom]

When I did mine it cost me $3500 for a jzx90 conversion kit using second hand parts. This was with a r154.

Found this which I posted in another topic on the forums which could be some help.

I got a conversion kit when I done mine and it was a pretty painless exercise apart from a few hiccups which you will know to avoid after I tell you. Mine only took a weekend and I done it on axle stands on my driveway.

Watch out for conversion kits which come from a jzx90. Although they mostly work, you will need to change a few things:

jzx90 manual brake pedal wont work unless you also have the jzx90 booster, the brake pedal ends up way too high. The way around this is to use jzx100 booster and cut down the automatic brake pedal, which I have done on mine.

The front half of a jzx90 drive shaft will need the hanger bearing swapped over from your jzx100 auto drive shaft as it is too wide to fit in the jzx100 tunnel/mounts.

jzx90 clutch line is almost right, fairly easy to reshape a few bends though.

Obviously you wont have these issues if you get a jzx100 conversion kit.

Eitherway, you will need to cut a nice section of your tunnel out (forward of the existing hole) for the remote shift section of the gearbox and make a new box/tunnel to sit on top over it. OR get jzx100 manual tunnel section.

I didnt hook up any speed sensors on my r154 as they had different connections from my loom (loom was 2 wire, sensor on r154 3 wire) speedo still works off the abs sensors on all 4 wheels, am told that abs might not function correctly without a pickup off the box though.

Starting the car is as easy joining two wires on the automatic gearbox loom. reverse lights are the same.

Also if using a 2nd hand clutch and its pull type, you don't actually attach the pressure plate to the flywheel until you have bolted the box onto the engine. You sit the clutch on the input shaft on the box and then tighten bolts through the inspection covers. (i only realised this once i was under car trying to lift box up over the clutch )

4age flywheel bolts are interchangeable for 1jz, should be easier to find.

[kindaflush]

thanks dom, supose the hardest part is finding the parts needed, did you import your conversion kit from japan or something?

[kindaflush]

do you or anyone have any pictures or measurements of how much to cut the firewall? have looked on google and all that but nowhere seems to have any info.

[dom]

You dont have to cut the firewall, you just need to extend hole from the automatic shifter forward about 15cm. This is so the remote shift section of the box has room.

I made folded up some sheet metal to enclose it all, dont have any photos though.

check out this thread on jzxworld, it has photos half way down of the dude welding an extended tunnel section from a manual chaser into his auto one http://www.jzx100.com/forum/topic/2012- ... ge__st__40

[kindaflush]

cant see the pictures on there, tried registering but my email isnt accepted by that site. with the clutch pedal is the place to drill out the holes stamped on the firewall? or how do you know where to put the clutch? ill have to get under there and have a good look before i get into it.

[kindaflush]

was going to attack the manual conversion this week, does anyone know the measurements to lengthen the drive shaft to suit a w58? i have the auto drive shaft and a w58 yolk. also if anyone has recommendations to certain driveshaft shops to do it? pref round glenfield or north shore area.

also would anyone recommend mechanic shops that would do the conversion? if its not too expensive might be better for the pros to do it,

cheers

[dom]

The holes for the clutch master will already be there but have rubber bungs in them (thats what it was like on my jzx100). I've used Drive Inn in New Lynn for driveshaft work before and they seem pretty good.

As for shops to do the conversion, best to go to a shop who know jzx's rather than any old shop. Only mechanic shop that I know of that may be able to do it is Amac in Albany, (the owner Lance seems to know his stuff about jzx's).

[FLAWLES]

brendan aka niteB on these boards go see him

[XQZIT X90]

ADL on sunnybrae road in glenfield can help you with the drive shaft work i have had rear axles done before they do a good job, and yeah have a chat to brendon or lance at amac (they used to work out of the same workshop for many years) =) Hope that helps