GQSaf: Rebuild the TD or LS1

[Craydiver]

An overheat has resulted in no2 cyl major pickup, having removed the head today.
Prior to this, i was still looking at spending 3-4 k chasing extra kw as the after market turbo fitted last yr has improved, but it still a long way from some decent accel/power.
I'd estimated 4k, ie 12-13mm pump, injectors, bigger turbo, intercooler, 3inch exhaust,inlet manifold mod and upping the boost, even then i guess you would be still only putting out 160kw.
Now im looking at an engine rebuild , i wonder if an LS1 is a more cost effective way to go considering it 250kw plus out of the box.

Would be keen to hear from those who have put an LS1 in the saf, what were the unexpected issues? Are you happy with the performance.
Can you run ok on std diff ratios (on 35's)
Conversely keen to hear from those with reasonably modded TD's, are you happy with the power.

[Crash bandicoot]

I'd be looking at day to day running costs into the future with the money calulation. Ive had a big horsepower petrol engine in a 4wd before but have gone back to the diesel simply for reliabilty and simplicity sake when off road.

even then on a slightly smaller scale ive squeezed falcon and commodore harrasing power from my current qd32, the decision for me being the fair few off road trips involving deep water and mud which my previous RB30det didn't like one bit.

Anything is possible, currently a mate is fitting a 4.5 litre v8 into a landcrusier but has had to forfeit road handling and day to day drivability with a suspension lift and a body lift just so the power steering pump and sump can clear the steering and front diff.

[derk]

1st consideration is if your petrol or coal burner person
2nd consideration is how much road use it does ie primary or secondary vehicle

after answering those 2 questions you'll know what you want to do mate

[Craydiver]

Secondary : used for clubs trips, odd winch challenge and hunting. Ie parked up all week and is weekend toy.
I have no pref over diesel vs pet.
Diesel is cheaper for the 4hr each way hunting trips but ultimately not too much of an issue $ wise for me.
It's really about whether a modified tsd does perform compared to the pet.

[kiwibronco]

Craydiver I'll be watching the responses mate. Am in the same boat re a crook TD42 and been considering shifting to petrol v8. After a bit of head scratching I'm leaning toward the TD42 rework with good gear, "probably" with a good second hand engine but I gotta find one.

[3VILC]

I love the sound of a V8, but theres something about the sound of a TD42 with a big turbo.. Wonder if you could shoehorn a CAT C7 in there

[mudlva]

Weekend warrior LS1

DD LS1

Both option will chew fuel if you drive em heavy. Just LS1 will drink it harder

[bombaybasher]

Detroit diesel ? Best of both worlds, v8 supercharged and or turboed , sound awesome , can't beat the sound of old motor scrapers screaming around subdivisions , that's my dream conversion if my td42 dies

[Suza]

Detroit diesel ? Best of both worlds, v8 supercharged and or turboed , sound awesome , can't beat the sound of old motor scrapers screaming around subdivisions , that's my dream conversion if my td42 dies

x2

[slidenyo]

lm7 or lq9 give you a cast block and take a turbo better. surely you could also look into an fd6 from a Nissan truck
and of course a cummins of some description

[Ashohman]

Seems people are really off topic here. 2 choices td42 or ls1.... easy options.

[Trundle]

TD allllllllllllllllllllllllllll day

[darinz]

Take what you think the ls1 conversion will cost. Now add a bit and then double it!
Now compare to working td42.

td42 will give plenty of power and reliability for a lot less than any v8 conversion.

When I put the turboed vh45de into mine, I did most of the work yet still cost about $14,000! Motor cost $2k. Spent over $1k on plumbing after motor turbo and exhuast were already done.


Ls1 would be cheaper but I'd say closer to $10 than $5.

[Trundle]

No matter which way you go no change will be had from 10k , only cobwebs in the wallet ,
Turbo 17-1800 for a good one , pump 1850 for one of our , 600 for injectors , reface rockers and rocker shaft , 44mm external gate around 500 , inlet manifold $1000 , exhaust manifold , Then tune , new clutch to put up with the power and no doubt cooling system up grades lol !!!

[slidenyo]

makes a rebuilt stock motor sound attractive?! ^
then build up a td on the floor and swap it later

[4WDbits]

Its easy to get a cost on LS1 conversion, have a look at Marks Adapters to price up the bits, allow a couple grand to install and set it up (unless doing it yourself). Then there is running costs of a petrol, LS1 can be quite frugal if driven carefully, but who is going to do that?

You can also sink a lot of $ into diesel performance and at the end of the day you still have fuel + RUC. Check out some of the diesel mods being done on here and feece book, big changes and still less power than a stock LS1.

If you compare big mods diesel to big mod petrol you get more out of the petrol, but pay more at the pump.

[Craydiver]

Thanks for the replies on v8 pet, and yes I've calc about 10k min for a ls1.
Really keen to hear from those with a reasonably modded td , are you happy with the performance?
Just pulled 2 td's out today, the poked 1 and the complete spare I had in a 93lwb parts vehicle.
I'm willing to spend some $ it's really deciding are the $ modding a td worth it.

[coxsy]

well mines fine for a modded TD there was more to be spent on it than I am willing to do,bigger pump pungder 11 or 12mm increase injector pressure , the biggie is the crank can break under high hp,higher turbo pressure helps too,and intercooling ,but would need a good job to cover those things

[timmay556]

All I know is when doing the co$t calculations you need to factor in the awesome-ness that is a V8, the co$t allowance for this can only be decided by you