[the_orb]

Hi all,
today my sierra was named the slowest car at my school and we named it the fume buggy

I didn't buy it because sierras were fast, i bought it because they r so insane off-road.

So now i have decided that some work is needed on the engine. it burns oil, blackens spark plugs, and my fuel economy sucks(250-300k's per tank). But there are so many suggestions and different combinations of fixes. What can anybody recommend to give me better fuel economy and good acceleration.

I don't want a super fast car, i just want the speed limits to be limits, not goals, lol

[steve]

the_orb wrote:

I don't want a super fast car, i just want the speed limits to be limits, not goals, lol

bwahaha

250 - 300 sounds normal to me

[Bruce]

Yep about right at 250ish per tank. No hang on Casper gets over 600 per tank. Hang on, it's got a 75 lt tank.

[oscar]

thief

[royce]

use good oil

warm it up

make sure its tuned properly

what size tires do you have and how many litres are you putting back in when you fill it?

[the_orb]

using good oil

always warm it up 4 bout 10min

hmmmmm, hasnt had a tune in a while but runs otherwise smooth, how often should it be tuned

205/70/r15(i only have road tyres atm)

I fill her up (40L)

250ish eh? we used get 2 Sydney in my m8's lwb sierra and the tank still registered above empty, the only mod he had was a pod filter.

not that it (as far as i know) matters, the clutch is on the way out

[the_orb]

steve wrote:

the_orb wrote:

I don't want a super fast car, i just want the speed limits to be limits, not goals, lol

bwahaha

heheheheh yeah this afternoon i got overtaken uphill by a cement truck

[royce]

sounds like its running pretty rich, I would make sure the choke isnt stuck on and the airfilter is clean

tune can be 20-40 000km depending really

do a compression test too to see how it is
does it ping much? if not that coulod be a good sign, 1.3's seem to ping like crazy at the lightest hint of burning oil

[the_orb]

Choke plate could be the problem because the previous owner took it out during a rebuild and lost it so the one in there is home made, im still on the look out for a replacement but everybody only wants to sell the whole carburetter.

And what it a "ping"(forgive my ignorance)

As for the air filter, its all fine and pod filter will go in soon

[BLZUK]

run BP ultimate, it cures any pinging, gives more power and smoother response and i get about 350k to a tank (although my engine was rebuilt a year ago)
Mine ran crappy and had a bad flat spot but after running that its been good, it runs so crap on any other fuel

[the_orb]

thanks BLZUK, if only a day earlier because i filled up today, sigh, ahhhh well.

any suggestions to stop the plumes of smoke flowing from my exhaust?

[BLZUK]

pinging is the noise u hear under hard acceleration that sounds like pinging lol.
what colour smoke is it?
you'll need to run the ultimate for a few tanks b4 its really effective but is worth it.
I wouldnt get a pod, i've just got a k&n filter in mine and is good.
Is it running standard exhaust?

[Bruce]

oscar wrote:

thief

heheheh you were just to slow that day mate and he only lived about 10 mins from my place.

[oscar]

yep, i should've taken that day off. So cheap too

[the_orb]

its a blue/white smoke but it u put your hand near the exhaust it gets covered in specks of oil(unburned by the looks of it)

stock exhaust but soon to get a big muffler(mine is split thanks 2 a trip over rocky ground)

I haven't heard "pinging" but the stereo in never off nor is it ever low volume.

"stop smoke" worked for about 100ks then it made things worse, wont be trying that again

[projectzook]

gday. I just put a ercon 1600 vit motor in mine because i was suffering from very similar probs that your are. I was getting very low ks and using a lot of oil. if i left mine idling when itwould idle there would be a huge black spt of muck on the ground. I have only had the 1600 in for 2 days as yet so i dont really now how the k per tank have change. I used to get 400 form a tank then it when sour down to 200 to 250 if i were lucky.

But i have done a few mods to my sierra which probably contributed to the decline. lol!!!!!!!!!!!!!!!!

once i have gone through 2 tanks i will write agian and say how much it has changed.

[the_orb]

thanks for that!

did you replace just the block or everything (head, block ect)

bcoz i saw on suzisport that they hav a 1.6 short motor thats very tempting...

And finally did you do it all or did you have it done

[steve]

while we're here, orb and projectzook, willing to quote costs of stuff?

[projectzook]

to much mate.

[steve]

yeah i know the shit costs too much and i accept that. i wont be laughing at you. I realise if ya want shit done, sometimes you have to pay for it.

i'll flick you a PM

[tate_alec]

Did you find a solution to the smokey engine and excessive use of oil?

Mine seems to be doing the same.

[the_orb]

tate_alec wrote:

Did you find a solution to the smokey engine and excessive use of oil?

Mine seems to be doing the same.

iv just done a wheel bearing (badly) and the diff oil has wrecked the brake pads, $600 later on a student's budget, I guess ill put up with it for a while...

[Nik]

Mine too was smokey and used oil. I put in a carby 1600. $500 for radiator, motor, p/s, aircon + transfer! I didnt use the adapter plate so pretty much $500 + oil.
Goes heaps better but fuel injection would be my choice if I had the $$
Nik

[tate_alec]

Hi Nik,

Where'd you get the 1600 engine and runing gear from?

How hard was it to put in without the adaptor plate?

What was the engine type. g16?

Cheers

[Nik]

Found it on another forum, not that hard without the adapter.
I drilled out top gearbox holes to take vit bolts then unscrew bottom studs on sierra gearbox and bolt it to the engine. Run a drill from the gearbox side through the engine bellhousing. It will come out on a curved section so get an old inner sleeve out of a leave spring or similar and cut to make a misalignment washer then using the old top gearbox bolts go through back into the gearbox done!
For the driver side engine mount I redrilled the holes at both sides for the rubber mount and elongated the chassis side mounting holes and it bolted up.
Hope that helps a bit.
Nik