Ive just had straight LPG put onto the Patrol (TB42)
I also did the following mods:
electronic ignition
shaved head 40thou
I was going to change the cam but it was too much frigging around.
My question is what should i expect to gain from getting the dizzy regraphed?
The mechanic says he will do it for me but it is a waste of time as i wont notice any difference. He also said that he would lower the advance down low for the gas and have it flatten out up higher.
The truck does go better since the conversion but it seems hesitant.
Why is this such a suggested modification if it supposedly has no real gains??
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Distributer Regraphing
Distributer Regraphing
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
Id love to fit a Turbo dude but im short on $$
I think my fuel usage is fairly high as well. I dont really drive it hard at all and i get about 390km to the 116lt of gas. Adjusting the tappets again when it goes in to have the dizzy regraphed should make a bit of difference.
I think my fuel usage is fairly high as well. I dont really drive it hard at all and i get about 390km to the 116lt of gas. Adjusting the tappets again when it goes in to have the dizzy regraphed should make a bit of difference.
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
with gas, you should run at least 15 degree's ignition timing on a standard dizzy you can go higher with higher compression.CanberraMav wrote:Id love to fit a Turbo dude but im short on $$
I think my fuel usage is fairly high as well. I dont really drive it hard at all and i get about 390km to the 116lt of gas. Adjusting the tappets again when it goes in to have the dizzy regraphed should make a bit of difference.
If you discon the vacume you can go higher still, but you loose somewhere and gain some wlsewhere.
i am saying this a fair bit these days but change your mechanic! hehehe
people spend so much money to get electronically adjustable advance curves, rgraphing your dizzy to better match your ignition for the type of fuel used is CHEAP power and performance.
did you get extractors?
what did you do for throttle body and mixer?
JEs
Jes
ATTACH BROKEN TOYOTA HERE--->
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yeah that looks ok. make sure your plugs are a range colder and are new. You can toy with different plug gaps aswell to see how it affests the power and economy.
things that will affect your economy are
1 lift
2 tyre size and frontal exposure
3 diff ratio's in relation to the tyre size, have you corrected it?
the higher you go, the more gas you will chew up.
jes
things that will affect your economy are
1 lift
2 tyre size and frontal exposure
3 diff ratio's in relation to the tyre size, have you corrected it?
the higher you go, the more gas you will chew up.
jes
ATTACH BROKEN TOYOTA HERE--->
DUCATI <-----Worlds best warning label
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Hey Jes
I realize the size and wind etc have an effect on the fuel economy.
It revs a bit more than it should as well with the 4.88 diffs and 35's.
Still i though it was a bit much gas to be using. Also given the gearing it should accelerate pretty sweetly but it doesnt seem to.
Ill see after next week what the improvements are when the dizzy is regraphed. They are putting the truck on a dyno so time will tell.
I realize the size and wind etc have an effect on the fuel economy.
It revs a bit more than it should as well with the 4.88 diffs and 35's.
Still i though it was a bit much gas to be using. Also given the gearing it should accelerate pretty sweetly but it doesnt seem to.
Ill see after next week what the improvements are when the dizzy is regraphed. They are putting the truck on a dyno so time will tell.
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
your truck's a manual, ( i checked pics and redeited)
If so, you are overgeared for 35's. you should have 4.6's in a manual for 35's.
It will rev its tits off but go no where with those ratio's, they seem to loose alot of the feeling of torque. Like fitting 4.3's to a manual with standard tyres, revs its tits off, chews heaps more gas, and looses some midrange/top torque to the ground.
coupled with the amount of lift you have, and that rubber, dont expect miracles
to give you an idea of the effect of lift, i installed a 7" lift 3l patrol petrol Gq without any other mods. I then took it on the freeway and i shyte you not it would not go faster than 95-100km/h!
what made it better was the baseplate mod though
Jes
If so, you are overgeared for 35's. you should have 4.6's in a manual for 35's.
It will rev its tits off but go no where with those ratio's, they seem to loose alot of the feeling of torque. Like fitting 4.3's to a manual with standard tyres, revs its tits off, chews heaps more gas, and looses some midrange/top torque to the ground.
coupled with the amount of lift you have, and that rubber, dont expect miracles
to give you an idea of the effect of lift, i installed a 7" lift 3l patrol petrol Gq without any other mods. I then took it on the freeway and i shyte you not it would not go faster than 95-100km/h!
what made it better was the baseplate mod though
Jes
ATTACH BROKEN TOYOTA HERE--->
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So upgrading to 37's effectivly may actually give me better fuel economy?
I new it reved high but i though it would have had more torque if it was geared like this.
Im getting it dynoed next week so ill see how it goes after that.
After the gas conversion it does not have the power down low off road any more either. Before it would just power on at idle and now it needs revs to keep going.
I new it reved high but i though it would have had more torque if it was geared like this.
Im getting it dynoed next week so ill see how it goes after that.
After the gas conversion it does not have the power down low off road any more either. Before it would just power on at idle and now it needs revs to keep going.
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
If it doesn't have the power down low its not tuned right.
I spent a little bit of cash on my old TB42 mav b4 she rolled to have it all work right. Crane Cam Fireball Point conversion was done, Extractors and 2.5" Zorst made quite a bit of difference to the overall top speed and take off.
For down low mine was fantastic, I had 3.9:1 Diff's in a manual and 35's on it, i never had problems with it stalling or loosing power off road, in fact when i put the boot to it on a hill climb she should instantly take off.
Was planing on Straight LPG and a turbo but since she is gone, its not longer an option, was gunna have the Dizzy done at the same time turbo was done so it could be setup together, was gunna use the EFI manifold and an Impco converter with a blow though setup.
Now i have a real mans 4x4, Diesel, NA. needs a turbo this one
I spent a little bit of cash on my old TB42 mav b4 she rolled to have it all work right. Crane Cam Fireball Point conversion was done, Extractors and 2.5" Zorst made quite a bit of difference to the overall top speed and take off.
For down low mine was fantastic, I had 3.9:1 Diff's in a manual and 35's on it, i never had problems with it stalling or loosing power off road, in fact when i put the boot to it on a hill climb she should instantly take off.
Was planing on Straight LPG and a turbo but since she is gone, its not longer an option, was gunna have the Dizzy done at the same time turbo was done so it could be setup together, was gunna use the EFI manifold and an Impco converter with a blow though setup.
Now i have a real mans 4x4, Diesel, NA. needs a turbo this one
AA's for Quitters
it should do. i am sure that you will get better economy with 37's and your gearing.CanberraMav wrote:So upgrading to 37's effectivly may actually give me better fuel economy?
I new it reved high but i though it would have had more torque if it was geared like this.
Im getting it dynoed next week so ill see how it goes after that.
After the gas conversion it does not have the power down low off road any more either. Before it would just power on at idle and now it needs revs to keep going.
to get power back, you need ignition advance
ATTACH BROKEN TOYOTA HERE--->
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While I agree with Jes, YOUR engine may respond slightly differently for various reasons. Done on a dyno is always best. There is no longer guess work, only fact. But yes, turn up at dyno with Jes' things done first, plugs in right range etc. Saves money on dyno time.
[quote="bazooked"]can i use a mate to position while i screw? :twisted:[/quote]
Will be interesting to c the results of the dizzy regrauf, I have a 350 chev in my MQ on duel fuel, when on petrol it runns nice, but on gas is not as good. With ignition advanced a bit it misses at low down rpm most noticable if say goin round a roundabout in 3rd it misses and the rev counter jumps everytime it misses, now advance the timing quite a bit and it then runs spot on low down with no misfire but then pings it head off higher up or if say cruisin at 100kays and u put ur foot down or hit an incline and she pings bad. So i think it needs recurving so it gives more advance at lower rpm then i can have the dizzy set to max advance at 30 degree's. I guess it depends on the state of tune with engine too, a standard engine is more able 2 cope but modified like mine with a cam and higher cr it dont cope. Lets c wat differance it makes 2 urs!
Ok took the truck in.
It is currently at 12 degrees at idle so there is room for improvement there.
Other than that they couldnt tune the truck because at idle it is 9% to rich and they are unable to back it off. I have to take it back to the place that did the install and get a restrictor plate put in....or so they tell me.
The guy that did the conversion said if he puts in the restrictor plate it will cause the truck to surge and it will lean out to much at higher rpm's so they are basically arguing against each other.
Anyone know much about this?????
It is currently at 12 degrees at idle so there is room for improvement there.
Other than that they couldnt tune the truck because at idle it is 9% to rich and they are unable to back it off. I have to take it back to the place that did the install and get a restrictor plate put in....or so they tell me.
The guy that did the conversion said if he puts in the restrictor plate it will cause the truck to surge and it will lean out to much at higher rpm's so they are basically arguing against each other.
Anyone know much about this?????
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
Have you got a balance tube from your air intake to your converter?
I had the same problems as you and this cured the problem.
People do the same balance tube when they put snorkels/turbos onto lpg setups as the pressure of the gas is referenced to atmosphere and any pressure signal in the intake will wreak havoc with mixtures.
I had the same problems as you and this cured the problem.
People do the same balance tube when they put snorkels/turbos onto lpg setups as the pressure of the gas is referenced to atmosphere and any pressure signal in the intake will wreak havoc with mixtures.
TB SLUG. Dints, Cracks, Scratches, Rust, Mud, Broken Bits and Rattles.
There really isnt any problem with the running of the truck its just not able to be tuned. I know what you are saying but these results came from a dyno tune that didnt have air ramming down the intake ie:highway driving so i dont think the balance pipe thing has much to do with it.
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
Mine was tested on dyno and checked before and after balance tube install.
you are dealing with a -ve pressure in your intake
very slight negative pressure in intake is used to put a very small negative pressure on diaphram of converter so that they are both exactly at the same pressure, only took 10mins to hook up and great results,
a mixture that sits in the middle of ajustment .
i havent got a snorkel either it finishes in under the guard near the electric ariel
you are dealing with a -ve pressure in your intake
very slight negative pressure in intake is used to put a very small negative pressure on diaphram of converter so that they are both exactly at the same pressure, only took 10mins to hook up and great results,
a mixture that sits in the middle of ajustment .
i havent got a snorkel either it finishes in under the guard near the electric ariel
TB SLUG. Dints, Cracks, Scratches, Rust, Mud, Broken Bits and Rattles.
I would be starting off at around 15 degrees and also instaling the balance tube as it does make a difference even wihout a snorkel.
When u say it can't be adjusted do you mean that the idle air mixture screw has been wound all the way out? MAybe they have the wrong diaphram in the mixer....mine was like that when i bought it but got it changed when they couldn't lean it out anymore on the dyno.
Jimmy
When u say it can't be adjusted do you mean that the idle air mixture screw has been wound all the way out? MAybe they have the wrong diaphram in the mixer....mine was like that when i bought it but got it changed when they couldn't lean it out anymore on the dyno.
Jimmy
GQII Patrol YAY!!
install the balance tube, it does make a difference even at idle.CanberraMav wrote:There really isnt any problem with the running of the truck its just not able to be tuned. I know what you are saying but these results came from a dyno tune that didnt have air ramming down the intake ie:highway driving so i dont think the balance pipe thing has much to do with it.
FORGET the restrictor, that is going backwards.
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So the balance tube will allow the car to be leaner at idle??
When the mixture is fully leaned out at idle it is showing 9% to rich. He said this is a significant amount. He cant tune it when it is like this apparently.
Can someone show me using the photos above where i should fit the balance pipe?
Does it need to be tapped into the metal?
Is the pipe just some fuel hose or something similar?
When the mixture is fully leaned out at idle it is showing 9% to rich. He said this is a significant amount. He cant tune it when it is like this apparently.
Can someone show me using the photos above where i should fit the balance pipe?
Does it need to be tapped into the metal?
Is the pipe just some fuel hose or something similar?
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
On the front of impco converters there is a small gause screen, just pop this off with a screwdriver and underneath there is a threaded hole
(1/4bsp?)
wind a barb fitting into here and run some tube (not too small)
to a point somewhere between your air filter and your gas carb, before the diaphram (there may be a fitting in the gas carb body for this)
Shaun.
(1/4bsp?)
wind a barb fitting into here and run some tube (not too small)
to a point somewhere between your air filter and your gas carb, before the diaphram (there may be a fitting in the gas carb body for this)
Shaun.
TB SLUG. Dints, Cracks, Scratches, Rust, Mud, Broken Bits and Rattles.
I just realized that all the stuff is LG Industries or something like that. Its not Impco but appears to be similar???
I cant find the guaze thing anywhere. Maybe im looking in the wrong place?
What is the small grub screw i have circled there for? Can i use this to fit the balance pipe? When you say the front do you mean the opposite side of what i have circled?
Sorry about all the Q's but tomorrow i have to take this to the mechanic and i want to know what is going on because they dont seem to know much.
I cant find the guaze thing anywhere. Maybe im looking in the wrong place?
What is the small grub screw i have circled there for? Can i use this to fit the balance pipe? When you say the front do you mean the opposite side of what i have circled?
Sorry about all the Q's but tomorrow i have to take this to the mechanic and i want to know what is going on because they dont seem to know much.
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
I just dug out a photo of an actual Impco converter and i see the gauze is down the bottom.
On my truck the converter cover is plastic instead of metal like the Impco and has a threaded hole with nothing in it where the gauze should be. It looks as if it is vented to atmosphere here.
Will this work in the same manner?
On my truck the converter cover is plastic instead of metal like the Impco and has a threaded hole with nothing in it where the gauze should be. It looks as if it is vented to atmosphere here.
Will this work in the same manner?
Mud_runner_GQ says:
I need 1.6 metre long shocks
I need 1.6 metre long shocks
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