turbocharging the 1PZ

[dan_7]

I'm considering turbocharging my PZJ 70.

Which are the best turbocharging kits available in Australia? I've a friend there who could buy one for me.

Secondly, what impact will it have on engine life?

[dumbdunce]

I don't know that anyone sells a kit for 1PZ. like a 1HZ, it is fairly simple to manufacture a manifold adaptor to fit a turbo, all you have to do is source a suitable turbo.

[thrashlux]

Is the exhaust flange the same as a 1hz if so any of the kits that run the std manifold would bolt up

through you may need to check for alternator clearance etc

but they should bolt to the eng

these guys do one any how

http://www.turbofast.com.au/1hzkit.html

but any kit will eventually wreck your engine

putting a turbo on a 1HZ is like smoking cigaretts it wont kill you straight away but it will get you in the end

and the damage is on the inside and you cannot see it

thrashlux

cheers thrashlux

[dogbreath_48]

Is the exhaust flange the same as a 1hz if so any of the kits that run the std manifold would bolt up

1PZ is 5 cylinder, so unlikely a 1HZ manifold would bolt up

I understand a lot of PZJ powered cruisers were sold in Europe/UAE etc (only a handful were sold in aus) - kits may be more easily available in these countries.

[bj on roids]

You can use your existing exhaust manifold, and adapt a 1hz turbo to it. (Or any turbo suitable for that size of motor, off anything, subaru, 3B, skyline, supra, the possibilities are endless.

I looked at doing this a while ago, and you could quite easily cut one inlet off the turbo manifold, and it bolts up. (I am fairly certain its a 1HZ block/head just minus one cylinder, so if you are handy at fabricating, its easy enough to do)

[engineer]

the $$ you spend on a kit you could go out buy yourself a wee stick welder and a pack of General pupose rods, so me scrap steel to learn to weld on then buy a lasercut flange (for the head) and some nice seamless 90deg pipe bends and a wee bita str8 is all you need, a hacksaw and the right turbo flange and make your own manifold. buy a 2nd hand turbo in good nick, take ur sump to an engineer to weld an oil return line in. plumb in a oil feed line and plumb up the oil return lol. then all u gotta do is worry about is extra fuel! easy and youll learn great fab skills and have a welder to dothe next project

Ryan

[Sixty's Guy]

Denco do a turbo kit for the 1PZ. Denco are a well known and popular brand here in Aus.

[thrashlux]

Is the exhaust flange the same as a 1hz if so any of the kits that run the std manifold would bolt up

1PZ is 5 cylinder, so unlikely a 1HZ manifold would bolt up

I understand a lot of PZJ powered cruisers were sold in Europe/UAE etc (only a handful were sold in aus) - kits may be more easily available in these countries.

There are turbos that bolt on to the std exhaust manifold instead of the exhaust pipe my guess is that this flange would be the same for the 5 or 6 cylinder
i was not talking about using a 1hz manifold but using a turbo that would bolt to the std toyota manifold

for interest where is the manifold split if any on the 1pz on the 1hz it is after no.4 cylinder

if it were after no4 you may even be able to use 1hz stuff

thrashlux

[v8zuki]

Is the exhaust flange the same as a 1hz if so any of the kits that run the std manifold would bolt up

through you may need to check for alternator clearance etc

but they should bolt to the eng

these guys do one any how

http://www.turbofast.com.au/1hzkit.html

but any kit will eventually wreck your engine

putting a turbo on a 1HZ is like smoking cigaretts it wont kill you straight away but it will get you in the end

and the damage is on the inside and you cannot see it

thrashlux

cheers thrashlux

your dreaming only way a turbo kills a motor is with poor tuning and a heavy foot with no regarge to exhaust temps

[thrashlux]

Is the exhaust flange the same as a 1hz if so any of the kits that run the std manifold would bolt up

through you may need to check for alternator clearance etc

but they should bolt to the eng

these guys do one any how

http://www.turbofast.com.au/1hzkit.html

but any kit will eventually wreck your engine

putting a turbo on a 1HZ is like smoking cigaretts it wont kill you straight away but it will get you in the end

and the damage is on the inside and you cannot see it

thrashlux

cheers thrashlux

your dreaming only way a turbo kills a motor is with poor tuning and a heavy foot with no regarge to exhaust temps

A 1hz is not a turbo motor and toyota never fitted a turbo to it

I have been there done that I had a safari turbo kit set up correctly with not too much fuel or boost ,boost compensator aneroid and a piro

never exceeded or even got close to max temps

the weak point in 1hz's is their pistons and precom chambers
they crack even on na 1hz's add a turbo and it speeds the process dramatically

normally you will not notice you have a problem because there is no power lost you may start having overheating when going up hills(cracked head allowing cylinder presure into the water jacket)due to precom chamers being cracked for a period and swelling and contracting at a differnt rate to the head

blow by due to cracked piston

my engine ran fine for a year with the cracked head and would only give trouble fully loaded going up hills the overflow bottle kept overflowing
otherwise no problems

if you want a turbo cruiser you are far better selling your running donk putting that money with the cash you were going to spend on the turbo kit then go out and buy a 1HD,1HDFT,1HDFTE.
It will last longer ,produce more power and use less fuel

but there are plenty of people who still believe that putting a turbo on a 1HZ will not kill it as long as it is set up ok
there were plenty of people in the 70's who said there was no conection between smoking and lung cancer

there are some of us who have learnt and others who just dont know yet
ARB learnt thats why they stopped selling 1HZkits

sorry to break the news

thrashlux

[dan_7]

I have in my posession a 1HD-FT that was taken off a Coaster bus and have been considering fitting that into the PZJ70. However, there are several problems: 1. the engine needs rebuilding (the head, turbo and cranks seem ok though), the cost of a proper rebuild is prohibitive. Though, I was told that if I fitted bore liners and used the old pistons it would be substantially cheaper. But I question the logevity and performance of such a solution.

2. I'll have to fit a H15x seres gearbox which is very hard to source in my country.

3. Last but not least, I don't have the know how to undertake such a job, myself and i'm sceptical of the mechanics in my country.

I"d appreciate any feedback and would like to know if I can improve the performance of the 1PZ without a turbo fittment or engine replacement.

Many thanks.

[thrashlux]

I know how it feels to be in a place where there is no competent expertise som one must rely on themself

The options you have are (in order of least power to most power)

1)set of extractors and a tune on the 1pz this would be a cheap reliable option but not masive gains in power

2)turbo the 1PZ, would increase power dramatically but would reduce the life of the engine by some amount (this would be dependant on how many kms on the eng to if it is worth while) otherwise you will be stuck with a rebuild for the 1pz but still a worth while option

3)rebuild the 1HDFT ,almost double the power of the 1PZ with factory reliability(if it is built right) with great fuel economy .
It would be best to replace the pistons would be money well spent
maybe you can find a good 1Hz block with a good bore and save money that way if the block is stuffed(not sure how common they are in your area)
1HDFT's are worth big dollars so it may be worth shipping it to an expert
for rebuild
the 1hdft would bolt into your old gearbox and depending on its health and how you drive it may last a long time your truck is a lot lighter than an 80series (how hard are the std boxes to get ?)
nothing is too complicated with the rebuild if you do attempt it get the genuine toyota manual and follow all the steps


cheers

jonathan

[Chucky]

Bang for buck go the turbo. Find someone who knows how to do the job right and it will give you bugger all problems.
As good regular maintaince and not ignoring the signs will let you know if any issues before they become problems.

I have a 1HZ in my 80 running a DTS turbo intercooler at 16psi. Been running this for over 8 years without any engine problems. In fact the only issue I have had with running gear is 2nd gear synchro. But when the turbo was first installed it was done right with the right engine mods to go with it. I also get my cooling system pressure tested every year and injectors done over every 75K.
And when things happen that are out of the ordinary take notice. Things like overflowing overflow bottles need to be looked at closely.