[sideways]

tanshi wrote:

the 1.3 carby is enough. but the best?

LJ50, obviously.

[KEENSY85]

what abou 4agez ??

[Fatzook]

KEENSY85 wrote:

what abou 4agez ??

Great motor. Getting long in the tooth, and getting VERY hard to find a sypathetic engineer

[datso]

bare engine g13a is 51kg
bare engine 4age is 94kg

thats 43kg difference on the front end which is way to much
Even the 20v 4age has no torque at all in midrange while
the M15a is a good compromise making good torque.

[KEENSY85]

datso wrote:

bare engine g13a is 51kg
bare engine, 4age is 94kg

thats 43kg difference on the front end which is way to much
Even the 20v 4age has no torque at all in midrange while
the M15a is a good compromise making good torque.

I don't think the extra kg is a prob but that's me, but defently a factor to consider when picking a motor for a conversion

[zukmeista]

Yes it is, when sierras are front heavy to start with!

[datso]

m15a is getting my pick likely for suzuki donk for a sierra but a J series although a better engine are quite rare to source.

[douglasgiersch]

Toyota 4k.









Waits for hate mail

[datso]

no hate just 35-40kg heavier better use the 7k instead 1781cc 80.3mm bore x 87.5mm stroke

but we really need some TAperformance alloy buick ohv v6 engines at a decent price

[TZAR]

sideways wrote:

tanshi wrote:

the 1.3 carby is enough. but the best?

LJ50, obviously.

[KEENSY85]

my mates got a g13bb out of a jimny at the wreckers it would be lowish kks but probly want ur left arm for it and maybe a kidney ,there was a import sr20 turbo engine with a sylvia box,pitty the sr20 is to heavy i probaly would have grabed it

[TZAR]

How about a V4 200hp two stroke turbocharged diesel aircraft engine.

http://www.deltahawkengines.com/specif00.shtml



Would cost abot 578 times more than what your sierra is worth though, but you only asked for the best engine

[Fatzook]

TZAR wrote:

How about a V4 200hp two stroke turbocharged diesel aircraft engine.

If I'm nopt mistaken, there is a supercharger sitting in the valley as well

[Gwagensteve]

I'm going to assume that's for cylinder filling due to the 2 stroke, like the GM V series diesels.

That's a cool motor, but it would be a terrible wheeled vehicle motor. It's a purpose built aviation motor and as such designed to work at a constant speed/constant load, and only spins to 2700rpm.

There was a thread on pirate years ago where some guy was building a rock crawling buggy with a 280hp mercury race outboard motor in it. It was a two stroke flat 6 from memory, spun to over 10K and was incredibly light weight. They were building a 2:1 stepdown box to run it into a powerglide, because autos don't work to well at 10K. It wasn't ever finished IIRC.

I'll say that the best engine for a sierra has little to do with the engine and everything to do with the gearbox. Get the right gearbox in the car and it's not hard to find a small, EFI 4 cylinder petrol that makes enough power and torque, however, starting with a motor with limited gearbox options will lead to a compromised car.

An example: The 4AG series. They are a great motor, no doubt, but they are limited to a strong (and rare) or weak (and plentiful) 5 speed, both of which have "car" gear ratios, a hydraulic clutch and are too long, or a small, weak 3 speed auto.

ALL the vitara gearboxes are superior to the gearboxes available for the 4AG motors, and IMHO that makes a vitara motor a better option than a 4AG motor. Other than dicey clutch cables, you can hate on vitara gearboxes all day and they're fine.

I was chatting to a guy at a 4X4 event years ago who put a mazda diesel in a sierra. He reckoned it was awesome and "would idle up a wall" etc etc.. He was using the gearbox from a van because it was short(er) than the other versions apparently, and it was all good, except the shift pattern was reversed, so reverse was where 1st should be and reverse was where 1st should be - another example of a bad gearbox scuttling what (might have been) a good engine choice.

Another point to consider is that the best engine for a car is the one that makes the least power to do the job you need. There's no point having 350Nm if every time you use over 200Nm of torque you blow something in the driveline up. It's nice having a stronger driveline than motor - it's a secure feeling. A monster motor leads to a monster driveline... and then the advantage of driving a suzuki - low weight and manoeuvrability - is lost.

Steve.

[Fatzook]

Gwagensteve wrote:

A monster motor leads to a monster driveline... and then the advantage of driving a suzuki - low weight and manoeuvrability - is lost.

Steve.

This is a very good point. And I learnt this lesson the hard way.

[KEENSY85]

Gwagensteve wrote:

I'm going to assume that's for cylinder filling due to the 2 stroke, like the GM V series diesels.

That's a cool motor, but it would be a terrible wheeled vehicle motor. It's a purpose built aviation motor and as such designed to work at a constant speed/constant load, and only spins to 2700rpm.

There was a thread on pirate years ago where some guy was building a rock crawling buggy with a 280hp mercury race outboard motor in it. It was a two stroke flat 6 from memory, spun to over 10K and was incredibly light weight. They were building a 2:1 stepdown box to run it into a powerglide, because autos don't work to well at 10K. It wasn't ever finished IIRC.

I'll say that the best engine for a sierra has little to do with the engine and everything to do with the gearbox. Get the right gearbox in the car and it's not hard to find a small, EFI 4 cylinder petrol that makes enough power and torque, however, starting with a motor with limited gearbox options will lead to a compromised car.

An example: The 4AG series. They are a great motor, no doubt, but they are limited to a strong (and rare) or weak (and plentiful) 5 speed, both of which have "car" gear ratios, a hydraulic clutch and are too long, or a small, weak 3 speed auto.

ALL the vitara gearboxes are superior to the gearboxes available for the 4AG motors, and IMHO that makes a vitara motor a better option than a 4AG motor. Other than dicey clutch cables, you can hate on vitara gearboxes all day and they're fine.

I was chatting to a guy at a 4X4 event years ago who put a mazda diesel in a sierra. He reckoned it was awesome and "would idle up a wall" etc etc.. He was using the gearbox from a van because it was short(er) than the other versions apparently, and it was all good, except the shift pattern was reversed, so reverse was where 1st should be and reverse was where 1st should be - another example of a bad gearbox scuttling what (might have been) a good engine choice.

Another point to consider is that the best engine for a car is the one that makes the least power to do the job you need. There's no point having 350Nm if every time you use over 200Nm of torque you blow something in the driveline up. It's nice having a stronger driveline than motor - it's a secure feeling. A monster motor leads to a monster driveline... and then the advantage of driving a suzuki - low weight and manoeuvrability - is lost.

Steve.

It's probably better to rebuild a Neer stock 1.3 with tcase gears, it should do job and be cheap. I'm going to cop it for saying that but pfft

[Gwagensteve]

KEENSY85 wrote:

It's probably better to rebuild a Neer stock 1.3 with tcase gears, it should do job and be cheap. I'm going to cop it for saying that but pfft

Not really. a Stock 1.3 is OK for a car that still weighs as much as a stock sierra, but most of our cars are much heavier than that, and that's quite apart from the huge increase in drivability and reliability EFI offers. However, if you substitute "near stock 1.3" for "stock Jimny G13BB" you're about right on the money. A bolt in G13BB makes for a really nice, clean conversion. It lacks a little torque for pushing heavy tyres on the highway, but properly geared, there's ample power for anything a lightish sierra is good for.

I wouldn't spend any money on a G13A/B (carby) or a G16A carby. They're just not worth it in my opinion, not when G16B's are available and easy to fit.

Steve.

[shakes]

zukmeista wrote:

Yes it is, when sierras are front heavy to start with!

When was the last time you wheeled a 20v 4ag sierra?

My money would go into a 12a rotary.

[zukmeista]

shakes wrote:

zukmeista wrote:

Yes it is, when sierras are front heavy to start with!

When was the last time you wheeled a 20v 4ag sierra?

My money would go into a 12a rotary.

Just my experiences, I find climbing hills no problem, but going down a hill, if a wheel lifts off the ground it starts to fall over.

[canberramav]

zukmeista wrote:

shakes wrote:

zukmeista wrote:

Yes it is, when sierras are front heavy to start with!

When was the last time you wheeled a 20v 4ag sierra?

My money would go into a 12a rotary.

Just my experiences, I find climbing hills no problem, but going down a hill, if a wheel lifts off the ground it starts to fall over.

This is a symptom of a short wheelbase not a motor 40kg heavier than stock.
Best motor for sierra is g16b or injected 1.3

[KEENSY85]

U stick a winch and a bar on the front and I recon u would get 40kg plus, my next engine hopefully be an import 4agze, or low k g13bb, but I have the light car and very healthy g13ba atm

[zukmeista]

canberramav wrote:

zukmeista wrote:

shakes wrote:

zukmeista wrote:

Yes it is, when sierras are front heavy to start with!

When was the last time you wheeled a 20v 4ag sierra?

My money would go into a 12a rotary.

Just my experiences, I find climbing hills no problem, but going down a hill, if a wheel lifts off the ground it starts to fall over.

This is a symptom of a short wheelbase not a motor 40kg heavier than stock.
Best motor for sierra is g16b or injected 1.3

If it was just the wheelbase it would do it going uphill, but it doesn't.

[sideways]

The G16b is a cracking motor.

[zukmeista]

sideways wrote:

The G16b is a cracking motor.

Wonder what the next popular sierra engine swap will be, there's only so many G16B's around and they are getting fewer and fewer by the crack.

[neofitou]

StevieG suggested the mazda B motor.. 1.8 alloy, already bolted to an aw4 in kias..
Personally I will use a j20 in my next build

[Daz7]

Fatzook wrote:

Gwagensteve wrote:

A monster motor leads to a monster driveline... and then the advantage of driving a suzuki - low weight and manoeuvrability - is lost.

Steve.

This is a very good point. And I learnt this lesson the hard way.

Totally agree, and something that is lost on the vast bulk of people that have Suzuki's.

Gwagensteve wrote:

Not really. a Stock 1.3 is OK for a car that still weighs as much as a stock sierra, but most of our cars are much heavier than that, and that's quite apart from the huge increase in drivability and reliability EFI offers. However, if you substitute "near stock 1.3" for "stock Jimny G13BB" you're about right on the money. A bolt in G13BB makes for a really nice, clean conversion. It lacks a little torque for pushing heavy tyres on the highway, but properly geared, there's ample power for anything a lightish sierra is good for.

I wouldn't spend any money on a G13A/B (carby) or a G16A carby. They're just not worth it in my opinion, not when G16B's are available and easy to fit.

Steve.

My vehicle is now on the road and currently doing day to day duties (cause I can), with the standard G13A.

With Ute gearing and running the 30.8" diameter lightweight wheel/tyre combo its got more than enough torque and power and will happily cruise on 100km/h without a load in it.

However, I now hate not having EFI, its more the cold starts that get you as once it warms up everything is good. After being used to vehicles that you turn the key and drive off, having to wait around for it to warm up before you get full drivability is atrocious.

[atari4x4]

neofitou wrote:

Personally I will use a j20 in my next build

with the way the G16b's seem to be cracking i'd be building to suit a J20a, 94kW @ 6000rpm Torque 174Nm would make a sierra motor along nicely.

[alien]

Surely taking the m15 VVT out of a swift is a better option than going to a j20??? Of course, you need to figure out the immobiliser, but other than that the m15 is a great little motor!

[Fatzook]

alien wrote:

Surely taking the m15 VVT out of a swift is a better option than going to a j20??? Of course, you need to figure out the immobiliser, but other than that the m15 is a great little motor!

Nothing wrong with the J20. Its just as simple to fit as a baleno engine. But with 30Nm more torque @1000rpm lower, the J20 is the better choice over the M15.

[mnemonix]

atari4x4 wrote:

with the way the G16b's seem to be cracking i'd be building to suit a J20a, 94kW @ 6000rpm Torque 174Nm would make a sierra motor along nicely.

You're flogging the g16 cracking issue lately aren't you? Every time the engine is mentioned I just sit back and wait for your 2c.
Yes, a lot have cracked. They've still been THE engine of choice for vitara's and sierras for the past 15 odd years and have proven themselves worthy.


I've flogged the shit out of my current g16. It's been boosted at 16psi, overheated, Flogged mercilessly at a 7500rpm redline through sand and mud, abused with inadequate filtration.
It's currently getting rebuilt - despite being in OK health, because I want to run more boost and more power.

It got a clean bill of health and no signs of cracks. They're not the pure lemon that you seem to be making out lately. How many g16's do/have you owned?