Engine conversion for LJ50

Post by **ricky1970** » Fri Oct 03, 2008 9:19 pm

Picked up a LJ50 today, mainly for use as a shooting buggy. Its still got the stroker in it (runs) but will proberly prove a bit smokey for its intended use, so would't mind doing an engine conversion on it. It MAY end up regoed one day so rather a swap with limited rego hassles and preferably a 5 speed box.

Was thinking Suzuki 1L but what 5 speed will/can be made to fit. Would it be better to fit latter 1L or 1.3L Sierra diffs or adapt discs to the origionals.

Any ideas/tips would be appreciated.

Rick

Post by **germo** » Fri Oct 03, 2008 9:49 pm

for ease I would just put a 1L and 4 speed gear box, keeping the lj transfer and diffs!
if its a shooting buggy then its not going to need heavier duty diffs, so the lj diffs will be good and have a low ratio as well.
I'm pretty sure the disc brakes can be put onto these diffs

and you wont have a drama with rego

ashley

Post by **Wrench_Pilot_86** » Fri Oct 03, 2008 10:33 pm

just crossed over from the nissan forum,

i have a LJ80 that i'm remaking into a trail rig and i have and deciding on a 4ag with a toyota T50 5sp or the Free way with a nissan Z24 and 5sp

now im not saying a 4ag or Z24 would be the best for you, but one of the earlier KE corolla era 3K,4K,5K motors would do the job nicely, all you would have to do is set the motor in as high as possible and weld up a new gearbox cross member all the electrics from the LJ as far a wiring will crossover to the corolla motor

Post by **joeblow** » Fri Oct 03, 2008 10:41 pm

yeah....stick with the 1 litre or 1.3 zook motors....we all know what the 'k' stands for with the tojo motors...

Post by **Rotazuk** » Sat Oct 04, 2008 4:43 am

Not going to help you out much but this is what I will stick in the LJ when it get all fixed you next winter

Its a swift turbo motor , a G10a so the 413 box bolts on the back of it . Nice small fit and still suzuki .

For a cheap swap just get a 413 engine and box , better chance of fitting in the tunnel than a t50 etc , let alone the nissan box .

Chris

Post by **Highway-Star** » Sat Oct 04, 2008 7:49 am

ricky1970 wrote:Would it be better to fit latter 1L or 1.3L Sierra diffs or adapt discs to the origionals.

Any ideas/tips would be appreciated.

Rick

WRT this, Keep the LJ diffs unless you are prepared to monstorously re-work the car as LJ diffs a centred, and Sierra diffs are both offset.

I think the 1L sierra front disc swivel; hubs will essentially bolt onto the LJ front axles. However they may not work too well unless you use the 1L front disk Sierra master cylinder also (to suit). I havn't done this, but I believe it is the case, so please verify.

Post by **jonno_racing** » Sat Oct 04, 2008 10:42 am

i have to say... i would keep the 2 stroke.. one of THE coolest things i have ever herd was a Lj50 playing in the mud with a Proper bike exaust pipe some how attached.. it sounded mental.. it would be sad to get rid of that awsomness!!!

and also where did swifts come out turbo?? rotazuk?? also u have a gti motor sitting behind that.. u have to many toys

Post by **St Jimmy** » Sat Oct 04, 2008 10:50 am

jonno_racing wrote:i have to say... i would keep the 2 stroke.. one of THE coolest things i have ever herd was a Lj50 playing in the mud with a Proper bike exaust pipe some how attached.. it sounded mental.. it would be sad to get rid of that awsomness!!!

and also where did swifts come out turbo?? rotazuk?? also u have a gti motor sitting behind that.. u have to many toys

x2 i had a set of tripple carbs of a 750 2 stroke suzuki into a expansion chamber it went well and take the reeds to a bike shop and try to get some boyson reeds

Post by **Gwagensteve** » Sat Oct 04, 2008 6:19 pm

Or try and kind a sohc F6A - these are a nice fit in an LJ.

Steve.

Post by **joeblow** » Sat Oct 04, 2008 6:39 pm

this is what is going in mine very soon( mind you it will be a 2wd rod ), now that the new monster shed is up and i can finally put some time into it. tiz an h20 vit v6. will keep updating pics as it progresses. oh and yes, it will be legal.

Post by **ricky1970** » Sat Oct 04, 2008 10:36 pm

OK, had a play with the little thing today and looks like its got a leaking head gasket. I can get another stroker motor and box for nix, and maybe a LJ80 motor as well. Or just fix this one. Dispite pressurising tha radiator, the very crappy plugs and dirty points, it ran susprisingly well.

If i was to go the 1L Suzuki route (looks best for my needs), do i use the origional box or the Sierra box? How much should i be paying for a s/h 1L motor and box?

Googled a bit and it looks like the LJ50 has lower diff and transfer ratios than most zooks. So maybe i can change diff ratios, run a moderate sized tyre (205R16???) with the lower LJ50 transfer gearing and not need the 5 speed box if it ends up with plates on it.

Post by **Brendan-s** » Sun Oct 05, 2008 7:09 pm

http://cgi.ebay.com.au/Suzuki-Sierra-1l ... 286.c0.m14

Bit of a drive but it looks nice and clean for a 20 yo motor and box

Post by **Eddy** » Sun Oct 05, 2008 9:16 pm

I would keep it ridgy.

There's nothing wrong with the stroker.

Get a good set of reeds, tune the carb (will probably need new jets) and fit a 1 3/4" exhaust system, with a good expansion chamber. Maybe even replace the carb with triple mikunis.
Run a good synthetic 2 stk oil will fix the smokey problem. I used AMSOIL, and had NO smoke, once warm.

The Hardtop and soft top had different ratios, softy was higher (lower geared) from memory.

205R16 are same diameter as the standard 600s.

650 or 700 16s will fit ok, as will 215/75R16 or 225/75R16.

'course if you do decide to toss the stroker, ya can send it to me if ya like ... 'can give it a good home

Post by **3 cyl** » Mon Oct 06, 2008 4:54 pm

The motor that fits best in a LJ is a 2 stroke,they have an extremely high gearbox/crankshaft (notice the cooling fan is on the crankshaft) and any motor bigger than a 1 litre will just make it nose heavy top heavy and just a little scary down steep dropoffs. This won't worry Joeblow's hotrod because he'll be able to lower all that with the V6 and 2wd. I once bought a Stockman LJ80(parts car) with Datsun A15 GX twin SU motor and it was easy to endo badly geared and unstable.If you still want to go 4stroke I could swap you an 800cc LJ80 motor,gearbox ,transfer and diff centres for the 2 stroke ones. But then it won't fit under the bonnet (but I also have one of those).If you get the 2stroke running properly and warm you'll find it isn't that smoky anyhow.

Post by **ricky1970** » Mon Oct 06, 2008 5:30 pm

So, when considering a engine swap, light weight is a major concern? The stroker looks like a VERY light lump.

If i keep the 2-stroke, would be interested in info on the chamber/exhaust mods. It has a very bodgy exhaust atm. Must admit a 2-stroke at full noise is a great sound. Mite stick a head gasket on it and give it a tune, see how it goes for a while.

Anybody know what the point gap (or prefer dwell) for the 2-stroke motor?

Thanks
Rick

Post by **3 cyl** » Mon Oct 06, 2008 5:43 pm

Gasket sets are available from Repco ACL brand p/n GD720 plugs are NGK B7HS (don't use anything else) points gap:.35 - .45mm, dwell 36 deg. Don't bother trying to get power out of it as it still won't be fast,just faster to the next rebuild. 8 to 10 deg BTDC for timing.

Post by **nicbeer** » Mon Oct 06, 2008 5:46 pm

turbo on a stroker

. . . . mm

bike turbo thou

Post by **ricky1970** » Mon Oct 06, 2008 5:51 pm

3 cyl wrote:Gasket sets are available from Repco ACL brand p/n GD720 plugs are NGK B7HS (don't use anything else) points gap:.35 - .45mm, dwell 36 deg. Don't bother trying to get power out of it as it still won't be fast,just faster to the next rebuild. 8 to 10 deg BTDC for timing.

Has Bosch W10DC atm

Get a few parts during the week and have a play with it next weekend.

Thanks for the info

Rick

Post by **St Jimmy** » Mon Oct 06, 2008 6:07 pm

use a good 2st oil and it won't smoke

Post by **3 cyl** » Mon Oct 06, 2008 6:14 pm

I run Castrol activ2t which is only mineral and not that dear and once it warms up it smokes less than most Magna's and Lasers.

Post by **zookieboi** » Mon Oct 06, 2008 10:25 pm

joeblow wrote:this is what is going in mine very soon( mind you it will be a 2wd rod ), now that the new monster shed is up and i can finally put some time into it. tiz an h20 vit v6. will keep updating pics as it progresses. oh and yes, it will be legal.

eww hot rod zook.. no better than a ricer zook

Post by **joeblow** » Mon Oct 06, 2008 10:51 pm

...that hurt commin from a newbie....

you fitted that skyline turbo yet ricerboi?
oh, and don't forget this cracker from the daihatsu forum that you asked,
Scat
anybody got some good info on these little badboys?
Im into sierras now but these look nice. i heard they came out in v8's??

Post by **lay80n** » Tue Oct 07, 2008 7:12 am

joeblow wrote: ...that hurt commin from a newbie....

you fitted that skyline turbo yet ricerboi?
oh, and don't forget this cracker from the daihatsu forum that you asked,
Scat
anybody got some good info on these little badboys?
Im into sierras now but these look nice. i heard they came out in v8's??

Bwahahahahaha.

Keep it 2 stroke, its never going to go fast, but strokers sound cool.

Layto....

Post by **zookieboi** » Tue Oct 07, 2008 9:06 am

lol looks like youve taken an interest in me and my posts, go find some more. and yeah i am a newbie im still a teenager. what you gunna do about it?

Post by **nicbeer** » Tue Oct 07, 2008 10:43 am

zookieboi wrote:lol looks like youve taken an interest in me and my posts, go find some more. and yeah i am a newbie im still a teenager. what you gunna do about it?

keep it on topic.

and Joe could give u a bus ride back to skool

Post by **joeblow** » Tue Oct 07, 2008 11:47 am

ALL ABOARD!

seriously, if the 2 stroke engine is still going and you don't use it pm me as myself or someone i know may be interested in it. would make a nice addition to the shed.

Post by **ricky1970** » Sun Oct 12, 2008 3:03 pm

Went and had a look at an LJ80 (or most of a lj80) today. It has a 3K + 4-speed and a few bits i could use/need. It was regoed with the 3k years ago. No radiator, fuel tank, LH guard, windscreen but fair bit of rust......$50.00

Questions-

Are the 4 and 5 speeds a direct replacement for each other, or are there differances?

Are the LJ50/80 body mounts the same (put 50 body on 80 chassis), or better to change the spring mounts on the 80 housing to suit the 50 chassis?

Can the 3K be mounted far enough rearward so a decent radiator can be fitted without cutting the front grill/radiator suport up?

Post by **3 cyl** » Sun Oct 12, 2008 6:12 pm

Don't know about 4 & 5 spds( I assume you mean corolla ones). A lj50 body fits on a LJ 80 chassis because I just put a 80 tub on a 50 chassis today. Only issue was the rear tow point seemed a little offset and 1 rear body bolt was 2-3 mm out ,probably only individual vehicles.If you move the 80 spring perches in it will give you good travel on the 50 chassis.I did that and used longer shocks and fiddled wide track springs and it ramps 150mm further than it's wheelbase,had to get longer brake hoses but. If you try to move the motor / box back check how short the primary driveshaft already is first and also you'll probably have to move the steering box ie; use a sierra one. Have you tried to fit a bonnet on it? Does this mean you're selling me the 2 stroke? If you're thinking of chopping the bonnet don't I can swap you for a LJ80 one.

Post by **ricky1970** » Sun Oct 12, 2008 6:43 pm

The 3K is still in the parts car (LJ80) and bonnet shuts ok. The worrying bit was the transfer was obviously move back and the front radiator suport/grill abd bonnet was cut to fit a radiator

.

It was sitting on its chassis rails (no wheels or front diff housing fitted) so couldn't get a good look under it.

The LJ bonnet is a bit iffy on one front corner but wont cut it up. Not totally against the stroker yet, with a halfway decent exhaust and some carby work (it appears to be drawing fuel into the main at idle). Gave it a run up the hills and the little b@$^%&d climbs

certainly a lot better than my Rodeo or Courier padock basher

Post by **dano80** » Sun Oct 12, 2008 9:50 pm

Hey Guys, I used to own an LJ80. What an awesome little rig.

All I did to mine was, weld the rear diff bung on some hankook muds and chuck the doors away, great fun.......until it rolled ass over tit!

There used to be a website lj10.com, used to have all sorts of info for conversions etc. regarding the disc brake and engine conversions.

Hope its still around and hope it helps.

Cheers, Dano.

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