Hey Fellas.
Just thought i would post up my diary on my GQ Engine conversion from a TB42 to a TD42t Intercooled.
TB42e to TD42 conversion – My Experience
I have 95 GQ Patrol RX TB42e on dual fuel, I love this ole bus but hate the motor, the LPG is temperamental, gutless and now the government duty on LPG has been increased its not even that cheap with LPG prices close to $1/Litre outside of Melbourne, if you can even get it. Because of the LPG the car cannot be set up right on petrol, in order to compensate the ignition timing for the LPG, everything is a compromise & I hate it, having to climb relatively mild hills in second or third gear, while being overtaken by everyone, losing speed as I climb and burning LPG like it’s on fire, oh and only being able to carry 70lts of petrol in the belly tank is a nightmare, every time I go 4wding, I need to know there’s a servo with LPG on route. I had been toying with the idea of ripping out the LPG and running straight petrol on dual tanks, but at the same time I’m thinking I would love to go all out and convert it to a Diesel for range and reliability……………
After chatting with a few people that have already done this conversion, I concluded that it could be an absolute money pit, but if you discipline yourself, do some research and look out for bargains over a longer period of time, you can do it all about 8k depending on the condition of motor you get, so I kind of started looking out for a TD42 and eventually found one for a price that I could not turn down.
From here the conversion idea was born, albeit a very slow process due to lack of funds due to building a new house, but a man’s got to have a project I guess, so anyway, here is a diary with some photos of my experiences and thoughts while doing a GQ TB42E to TD42NA -to TD42t conversion.
Day 1: Picked up my motor! 26th October 2014
I found a bargain 99, GU TD42 black top motor on eBay for only $1000, it was almost complete with only the power steering pump, water pump and exhaust manifold missing, So I checked the engine number in the local police station to make sure it wasn’t a stolen motor and after it came back all clear I decided to go for it. The downside, and there’s always a downside, was that the motor was located in Woodonga, and I live on the Mornington peninsula, so I hired a ute from thrifty and drove 31/2 hours from my joint to go pick it up then 4 hrs home all in one day on my own, and I was a little tired when I got back. Anyway I got the motor home and put it on an engine stand and begun to assess and figure out what I wanted out of this motor and what the rebuild project involved and what order I should start to do things.
I knew that I didn’t want massive KW’s but would want to turbo the motor, so I kind of decided that I would settle around 15psi of boost, pretty standard HT18 turbo specs thus not putting too much strain on the motor or my wallet. I also had been advised that the standard 11mm GU diesel injection pump, wound up a little, with no boost compensation should cope ok, it would be as far as it would go, but would be ok up to about 15psi, we’ll just wait n see I guess.
As Purchased.jpg