We are thinkin of fitting a turbo to the old cruiser 1hz donk,has anyone on the forum done this to a high km motor [450,000 km] ,I,ve been advised by the local turbo bloke that he has done this upgrade to much higher km trucks with no longevity issues,is he bull----ing me or what.
I don't tow anything heavier than a camper trailer but could do with a little bit of push up hills.
I.ve owned the truck for 20 years and religiously changed the oil every 5000 km and filter every 10,000 km
I don't know all the details so just take this post for what it is worth. A friend had a cruiser of about your vintage that he decided to turbo for a bit more power as you are describing. shortly after the turbo was fitted the motor blew up leaving him with a $9,000 bill to have it rebuilt. he was not a lead foot or heavy towing. Landy
__________________
In life it is important to know when to stop arguing with people
and simply let them be wrong.
I put the turbo on at 320k, and have done 80k towing a KK and a Vista Crossover (both about 1.7t). Get the turbo set on a lower boost and put in a boost gauge and EGT gauge. Have not had a problem.
Your motor needs to be in good condition to start with, but if it has been properly maintained there should not be a problem.
Yes I fitted a TD07 to a Fuso 7.5 diesel . It's runing 8lb boost with just a little extra advance in IP timing . Left the fuel as it was as it was only for lower rpm to keep power on hills . I hardly need to change down more than 3rd gear while before it was down to second at much higher rpm .. It hardly smokes like it was NA . Imo one of the best things you can do . As said keep control of boost and exhaust temps especially in tuning stage. No intercooler is required on
Moderate boost . Your fuel consumption will improve!
I had a turbo fitted to my 4.2 maverick a few years back with 280,000 Ks up
The owner of where I had it done said - His words - "I have no issues doing the Nissan 4.2 motors up to 500,000 Ks but I won't do Toyota 1HZ motors of any Ks unless the bottom end has been upgraded to take the added horsepower"
He has heard from other sources that 1HZ motors been turbo charged bending conrods, he did go on to say that many will turn up the boost and that's where all the problems begin so that's why he wont do them.
It's the piston ring lands . Bad tune will kill any engine . Work mate had one on 8lb it run fine . Tmk he still has it . Converted at 360,000 last I heard it had over 400.000 on it . Some fit turbo with NO waste gate or boost control from larger diesel or petrol engine .
Thank you good people for your replies, its given us a bit to mull over.
The bloke I was talkin to suggested low boost[8 to 10 lb] and no more than 30% increase in power, and that keeps the egt's below 450 deg with a 2.5" exhaust.
He also does a health check on the engine before he even considers fittin a turbo, then he runs her on the dino for a before and after shot of power increase.
Still thinkin seriously about it,gunna have to save some bikkies now.
It has a complete thread about this matter, ie. turbo on the 1HZ motor, and whether to do it.
I have that motor, in a 2006 Poverty pack. Had it done at 67000 km, when I got the vehicle as an ex RAAF unit. Now on 116000 kms, having done 25000 km of towing our 2750 kg van. Have the turbo set conservatively and it gives the extra power I want without too much stress.
__________________
Regards Ian
Chaos, mayhem, confusion. Good my job here is done
We had our Nov 96 build 1HZ motor fitted with an after market Turbo by AllTrac in Adelaide. Conservative pressure setting of 7PSI boost at around 225,000K. Tow a 19' Bush Tracker and we achieved 10% better fuel economy and around a "Gear and a Half" better towing up hills. Now on 370,000K and caravan on 110,000k and the tug is going just like new.
Cheers - Ian
__________________
Cheers - Ian
I slowly realise as I get older that I am definitely NOT the fastest rat in the race.
Also the older I get the more I realise I do not know.
I used to have a 105 with aftermarket turbo fitted. Because these motors were not built as tough as the turbo motors, you need to be a bit conservative. Limit your boost to 8 psi to be safe. You will still definitely feel the difference though.
At the very least, I would also install a good pyrometer EGT gauge so you can keep an eye on exhaust gas temperatures, especially under load. A boost gauge is also very useful. High EGT is what will kill it and without boost compensation on the injector pump, it's quite tricky to get the fuel delivery just right. And even then, it will be a bit of a juggle between power and safe EGT's, especially when towing. It took me about three weeks of 'tweaking' the fuel screw (1/8 turn at a time) before I was satisfied and even then, under heavy uphill towing loads, I found EGT's heading north necessitating backing off and/or choosing a lower gear.
This might all sound a bit negative, but it's not meant to be. It's definitely worth it. I'm just trying to highlight the importance of monitoring the boost and your EGT under load to ensure your motor will last the distance.
__________________
Cheers, Gerry Lexus LX470 2012 Traveller Sensation Pinnacle 21' Member VKS737 - mobile 3535
As GeryP has posted, I too believe gauges are your best friend when towing.
I have EGT - Boost and TM2 Digital water temp gauges and when towing glance often at them and drive to the safer side of limits.
EG: Along the flat EGT hovers 250F to 350F - Boost fluctuates 3 to 5 and temp steady on 163F @ 85Kh
Hit a hill and EGT (my) max to 500F - Boost up to 9LB (highest setting) - temp up to 180F to 185F and under load is what raises it all.
By simply lifting the foot a fraction and even going down a cog you can stay within safe limits and watch the gauges fall to where you are happy.
Of course the temperature and conditions on the day has input into any driving condition.
I drive a 92 Ford Maverick 6cyl TD42 with an after market Turboglide GT28 and tow an 18' van 2450Kg total loaded and I never ceased to be amazed by the 4cyl 2.5 to 3.0 litre tugs towing bigger vans (assume heavier) that fly past us on hills.
windows up (assume A/C is on) I can only imagine what is happening under their bonnets.
Most that I have asked in conversation about how their temps tell me the gauge never gets past half. There is a truth behind why they don't go past half but it's a saga to tell.
Anyway Gaz n Shell if you go down the turbo track good luck and if you can invest in some quality monitoring gauges and keep the boost conservative.
Thanks Gerry and Vince,I reckon that fittin egt and boost gauges is a good idea, I was tossin that idea around,just gotta find a spot to put em .I've got amp, volt,g.box temp and oil pressure gauges fitted now and it gives ya peace of mind knowin the condition of the runnin gear,comes from bein and old fitter I suppose,just force of habit.
The people at Turbo Glide seem very competent and are very keen to share their knowledge so I think that's where I'll go
