LPG covnersion on 100 Series RV/4.5 ltr
Submitted: Thursday, Nov 17, 2005 at 19:16
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Son of the MALS
I have a 1998 RV 100 series/ 4.5 ltr Petrol which as most will realise, doesn't mind sucking the fuel down. The conversion to LPG is a much cheaper alternative to replacing the vehicle to achieve something that rates as fuel economy. I have spoken with Toyota and a few other mechanics and they all say that it is no problem as long as servicing is kept up and a flashlube kit is fitted.
We are planning to fit the twin
tank system with the new direct gas injection as the vehicle does mainly town work with maybe five or six long trips per year. I don't mind the fuel cost for the long trips but around town it is a shocker!
As this engine has been around for a bit now I was wondering if any other cruiser owners have had this done and what problems, if any, have arisen? Also can anybody give me rough fuel consumption figures for LPG? Nobody can give me a straight answer!
Reply By: Patroleum - Thursday, Nov 17, 2005 at 20:26
Thursday, Nov 17, 2005 at 20:26
Son of Mals,
I'll give you the straightest answer i can. I have a 94 80 series with the same engine as yours. A month ago i had LPG fitted, not direct gas injection, the old type where gas is drawn intoi the inlet. Total Cost was $2500 including Flashlube kit.
Fuel Consumption is 23 l/100k round town and 20 l/100km highway. Petrol consumption was 19 l/100km round town, 16.5 l/100km highway. I have had
tank fitted in cargo area and retained both petrol tanks giving me 230 L fuel in total.
Regards
Greg
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139837
Follow Up By: Son of the MALS - Friday, Nov 18, 2005 at 00:07
Friday, Nov 18, 2005 at 00:07
Greg,
Thanks for the speedy reply. I have never been on this site before and am very impressed. The direct injection is "supposed" to almost level out the fuel consumption figures between Petrol and LPG, but even at the rates you are getting there is a definate benifit especially as I will probably keep the cruiser for at least another 7 years. Don't know where you are from, but here in Kalgoorlie ULP is sitting at around $1.40 with LPG at 0.64
How is the comparison in power when the going gets tough (soft sand etc) and when you are overtaking?
Also is your 80 Series manual or Auto? Ours is manual.
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Reply By: Member - DOZER- Friday, Nov 18, 2005 at 16:58
Friday, Nov 18, 2005 at 16:58
Mals' son
Rule of thumb is 10% more consumption of LPG. The system you are wanting to install is the best....a friend just got his 4 litre prado back from the Gas injection installer, and no difference on the highway in power, maybe a bit more he says....it is imparitive with your motor to get the tappets checked every 40000kms at the very most, as the lpg accelerates wear on the valve seats.The flashlube system will help alot...so make sure they fit one.
The dual tanks under the sides are a great idea, meaning no loss of fuel
tank or moving of spare, but you will be filling them alot more than you fill fuel now....and range on gas will be 350 kms max (70 litres), compared to 100 usable
tank under the back and 500 kms range with a wheel carrier, (or putting it on the roofrack or in the car behind the passenger
seat)
The idea of running gas is to use it primarily, so the loss of the 45 litre sub is no concern, consideruing you still have 95 up front.
With the rear install, also factor in a pair of lifted springs top take the extra weight on the back, or all 4 springs with the belly tanks.
Andrew
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Reply By: Patroleum - Friday, Nov 18, 2005 at 21:44
Friday, Nov 18, 2005 at 21:44
son of mals,
ours is manual, power would be probably 10%less, but after a week or so driving you wouldn't know, overtaking is great, hav'nt done a soft sand run yet,expect to be fine. We are wanting to keep ours for 5 more years so thought it worthwhile, wish i did it sooner. We're on the
gold coast, ulp is 1.05 - 1.18 lpg is .49-.58cpl.
Make sure you get the flashlube kit fitted, buy the lubricant in bulk, 5ltr if you can get it to keep cost down.
What does the injected conversion cost, as opposed to the conventional setup?
Good luck with your decision.
Regards
Greg
AnswerID:
140000
Follow Up By: Son of the MALS - Monday, Nov 21, 2005 at 17:37
Monday, Nov 21, 2005 at 17:37
Thanks for the feedback people.
I have done a bit more research and have decided to go with the conversion to twin tanks with direct injection. The cost of this in
Perth is approx $3600 minus the $500 govt rebate. It seems a little rich compared to the rear
tank conversion but means that I do not have to fit the spare wheel to the Rear bumper (adding $700-900) to overall costs and won't have to put up with swinging out the spare every time I get into the tailgate.
I am hoping the poly airbags already fitted to the rear springs will help absorb the weight but will have to see how that goes.
To all you Eastern states lads next time you cross the Nullabour swing left at Balladonia and head for the sea.(
Point Culver). You might just find us there where the cliffs of the Bight meet the spectacular beaches of W.A.
Some of the hardest, most beautiful and remote coastline in Aus and the fishing is out of this world.
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Reply By: Steve - Friday, Nov 18, 2005 at 22:42
Friday, Nov 18, 2005 at 22:42
Mine's a 98 100 series. Did the job in April. 10% less power or fuel efficiency is about right. I paid $2300 and replaced the subtank and spare wheel with a 90L lpg
tank. I've repaid about 50% of the cost so far with average mileage. If most of your driving is around lpg-available areas, don't think twice (as Bob Dylan said) get the job done.
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