1HD-T / LS1 or ??? (1 Viewer)

[Lumberjackbas]

I have a BJ42 which I am preparing for offroad challenges/competitions.
Till now it has volvo portal axles and coilsprings. I put on the 3B engine a turbo and intercooler...

But I am planning to install a more powerfull engine.
But I am not sure what would be the best choice:
- 1HD-T
- LS1 V8
- ???

Can someone give me some advice !?
Does the 1HD-t fit well in a BJ42? Is a 1HD-T heavier than a 3B engine?

Thanks in advance!

Best regards,
Bas

 

[Tapage]

it is heavier for sure ..

and yes it can be done ..

Which of both will depends on your target .. which kind of competition we are talking .?

 

[wongtsenhin]

Why not go for 15BT?
Powerful and lighter in weight!

 

[Lumberjackbas]

@Tapage
- yes I have saw your movie on youtube a lot of times
- why did you not install a intercooler? Not enough space?
- you mean heavier comparing with the 3B engine or with the LS1 engine?
- targets: more power and torque, reliable and simple technique


Competitions:
- Croatia Trophy > http://croatia-trophy.org/offroad/
- Breslau > http://www.rally-breslau.com/
- Superkarpata > http://www.superkarpata.com/



@ wongtsenhin
- yes a 15b-ft would also be nice....but I live in the Netherlands...and that engine is in Western Europe very hard to find...on the other hand a 15b-ft has less power and torgue as a 1hd-t

 

[Tapage]

that's not my 1HD-T posted in that pic that from my buddy Joe ( Belgium guy living in the states right now ), Mine have a top mounted intercooler .. you can check my Marilu thread in my sign ..

Knowing the kind of competition .. 1HD-T for sure ..

 

[crushers]

LS1 for racing ...

 

[Douglas S]

LS1 for racing ...

Yep, you'll want the power.

 

[crushers]

cheaper to fix too ...

 

[wongtsenhin]

- yes a 15b-ft would also be nice....but I live in the Netherlands...and that engine is in Western Europe very hard to find...on the other hand a 15b-ft has less power and torgue as a 1hd-t

15BT has more power than a 1HDT with proper mod to the turbo and IP. But you need to the way to go.

 

[Lumberjackbas]

@Tapage
Ok! Thanks for your help!

@Crushers
You mean that the LS1 engine is more for race cars? Not usefull for offroad vehicles?
Which engine is cheaper to fix?

@Douglas S
You mean I should go for the LS1?

@wongtsenhin
Ok, thanks for the info! I did not know that!

 

[crushers]

LS1 is for your application, in my mind.
i know it hurts to hear this but the LS1 is cheap to fix, tons of power out of the box, cheaper to buy new.

the HDT is a beautiful engine (not my favorite but that is besides the point) great torque but expensive to fix, low red line (4200 rpm). if you are getting into competition then you want quick response so the gasser is for you.

me, i would go with the HZ with turbo but that is cause i just like those underdogs ...

 

[TheBigBoy]

HZ with a turbo is the worst engine for competition. Runs super hot under those condition. I've had a LS1 and currently have a 1HDT. I'd go the ls, more power out of the box, no water issues, for that application it would be my choice.

 

[crushers]

as i said LS1
since te HZ and the HDT share the same cooling system design in the head, care to expand on your theory ...

 

[Douglas S]

since te HZ and the HDT share the same cooling system design in the head, care to expand on your theory ...

I imagine IDI transfers a lot more heat to the cooling system. I think I read that somewhere, not sure.

 

[TheBigBoy]

Yep, indirect injection. Pretty sure pistons are different. When you look into it, there is alot. People have alot of trouble just keeping their HZ's cool running low boost at highway speeds. Let alone Offroad comps.

 

[Dougal]

Yep, indirect injection. Pretty sure pistons are different. When you look into it, there is alot. People have alot of trouble just keeping their HZ's cool running low boost at highway speeds. Let alone Offroad comps.

Careful, Crushers hates hearing anything bad about the 1HZ.

 

[TheBigBoy]

Well, it was never designed to take a turbo, otherwise it would be a 1HDT.

 

[crushers]

assumptions so far.
those that are having issues with mild boost and over heating, what is the history behind the engine? brand new? old? cooling system was well maintained? mild boost but over fueled?
if NA, are they running a pyro to show what is happening inside?
are they running stock trucks running empty with over heating issues ?
are they running lifted, loaded trucks pushing working them hard?
i have yet to see the articles showing the 1HZ dying by the hundreds from over heating but would love to do some reading about the issue.

 

[TheBigBoy]

There are hundreds of them in aus. I've turbo'd a HZ before with a few friends. The overheating is WELL known. Most are everyday trucks (80, 105, 75) etc, egt's are usually set at 19/1 at max fuel. Because they have no compensator and only a fuel screw max fuel is set higher in the rpm range/max boost. Because of this, they run very rich until the boost catches up. To tune the afr's down at lower rpm means you lose alot of power up top at full boost. So your choices are down low/up top. There is no happy medium or any way to match correct air/fuel through without a compensator. - enter the HDT.

 

[crushers]

so ... don't cheap out and add a boost compensator. not the engines fault as you just pointed out.
i want to see facts where it is the cooling systems fault, not the install.

if there are hundreds of overheating 1HZ in Oz then were are the hundreds of articles about the issue. the early HDT had the BEB issues and that issue was well documented.

i have also turbo'd (and propane injected) 1HZ running 35s and a heavy foot, in the past with no over heating issues through the Rockies. understood, Oz is a lot hotter to begin with so that might be a factor.

the question once again, proof the the 1HZ has overheating issues and not hearsay with the history of the engine documented.