TB42 Turbo Power

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NoPressure
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TB42 Turbo Power

Post by NoPressure »

I must say that I haven't had a look around on the forum regarding TB42 engines and the power they can produce.

They are mostly categorised in the reliable segment of comments, but I was surprised to come across the fact that in Australia there are a lot of TB42's that are doing Winch Truck Racing (that is an insane event).

I watched a YouTube video of a guy making his old TB42 winch truck into a touring vehicle. He put it on the Dyno.

Video here:

For those that aren't into watching these type of things I will post a screenshot of the dyno results.

My question- if one can pick up a TB42 so cheap, how much would one need to spend to create something like this? Would it be basically that you would have to replace everything on a GQ? Any ideas?

And what is water meth injection?
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Tinus lotz
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Re: TB42 Turbo Power

Post by Tinus lotz »

ok die tb42 in ons land het nie met feul injecton uitgekom nie so jy met dit eers doen . Thys ellis het Stefan se gq akka goldie feul injection opgesit en turbo gemaak ek dink mens kyk na n 50k buget maar sal seker maak .
alex se gu het ook n tb42t in maar is nog besig met hom .
hier by ons is .45 tot o5 bar max vir ons pomp petrol vir elke dag ry.
Thys doen baie 4.8 nou het seker 4 of 5 karre die jaar na hom gestuur vir turbos en hy is n masjien ...op die oomblik is dit 89000 drive in drive out alles in ....en dit word reg gedoen .alles asof die fabriek dit gedoen het .
al die safteys moet in plek wees maar hoor maar by iant andries gert van askam en gert van upinton manne is baie gelukkig met dit
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Peter Connan
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Re: TB42 Turbo Power

Post by Peter Connan »

There is nothing the TB42 can do that your TB45 can't. In fact, it is very similar in most respects. All you want from the TB42 is the con-rods.

Water meth is a great way to boost power for short periods as it lowers combustion temperatures. I think it's first major usage was by the Germans in their WW2 fighter aircraft. But on a touring car, I doubt it's of much use.

Another thing to keep in mind is keeping that much power cool. I don't think the GU's cooling system is going to cope unless that power is used for relatively short periods.
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Re: TB42 Turbo Power

Post by NoPressure »

Thanks guys for the replies

I was more blown away by the fact that a TB42 can produce 570nm at the wheels :eek: , than what I have the urge to do it to my TB45E. I think I would rather (if I "need" to have more power, probably buy a TB48 and turbo that). How much percentage power gain is that for a TB42?

Maybe it's just me, but I will now always glimpse under the bonnet to see if there is a carby, if I see a TB42 for sale....what I will do if there isn't I don't know :think:

It's great to hear there are people that are extracting the potential of the TB42. There are some very skilled people in RSA :clap:

Nissan seems to have made all the engines ever placed in a patrol very tunable (3.0 and the new 5.6 included).
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Re: TB42 Turbo Power

Post by IanT »

Hellboy is a turboed 4.2, he is a full import so came with fuel injection, Tinus think you are a bit out on the costs, its about R70-75K about R10K cheaper than a 4.8. Peter yes you are correct I run a second radiator to keep things cool. I am running a very low boost of 0.3 (my one has an auto box which without spitsronics does not like the power) it was turbo'ed before I bought it but tuned for sea level so sent it to Thys (pre tune it was putting out 70KW on the wheels after tune 130KW) yes if you turn up the boost it will go much higher that that. Only trouble I have had is I blow my head gasket but I think it worped as hellboy stood for too long
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Re: TB42 Turbo Power

Post by SJC »

TB42 Turbo | Everything you need to know:
‘96 GQ 4.2 SGL
‘01 GU 4.5 GRX
‘08 GU TD42 BAKKIE
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