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v8 or turbo

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

maybe i said it wrong
sorry
but truck are deisel and fully boosted at 3-4000 rpm petrol 6000rpm ish give or take

and i know that turbos are awsome if set up right, even if there not!! i love them trust me, i have three turbo'd cars, a sierra, a nissan serena mid mount sr20det, and a td4.2d gu so i am well aware of turbos

but 75% of people that turbo petrol engines are chasing HP that comes with revs but causes lag in turn will cause you to ride the clutch under load extra fuel to go with it blah blah etc.

my suzuki towed better with the 1ltr in it then with a ca18det, i went from what 50hp - 200hp, but the rev range change was the killer the ca18 dosent produce a torque untill 3500-4000 rpm and then the turbo kicks in at 4500rpm making it a pain to drive under load.
getting up steap hills is an art in it self either mass wheel spin or wheel stands, so i am changing it to a top mount going with a bigger turbo t28 ball bearing as i run 17 pounds, BUT i am putting a sc14 super charger under it!!
that will run around 10 pound from idle so when the super charger starts cavitating the turbo will be spooling up to push a further 17 pound in then the best of both worlds!!

i see yours is a auto that to makes a huge difference allows you to run a decent stall, my 7 seater tubo'd van is auto and very drivable still doing mid 13's.

but as i want ny tow gq to be able to tow a 6.5 mtr car trailer rated @4000 kg with another gq on it i wont mass amounts of torque ie a 454 BBC i am concidering turboing it as well at a later date with 2 maybe t3'04 to give it a bit more!! but not silly, it to is an 4sp auto like yours to make driving it a pleasure.
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

offroader-rama wrote:
Tomo_89 wrote:
offroader-rama wrote:top mount with t3 fange brande new around $500 to suit td42 or tb42
where from?
pics?
my mate brought one about 2 weeks ago, i think it was from baudesert exhaust QLD, i will double check that and get back to you all.
it is cast iron looks factory but making it top mount awsome i thought, wouldnt flow like custom stainless ones but at half the price and realistly your not doing much more than 6000rpm if your lucky so who cares.

my 2c

UPDATE
i asked my mate and the top mount come from "mike vine turbo's" in capalaba QLD and was $580
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
Posts: 158
Joined: Sun Apr 26, 2009 2:52 pm
Location: Nowra

Post by drifter** * »

? 3000-4000 rpm in a diesel before boost? big diesel engines come on boost at about 800 rpm, my patrol starts at about 1500 and full boost at 2000 rpm and makes heaps more to torque at 2500rpm than an ls1 (more than double) perfect for towing! ca18's are a laggy p.o.s. the cam profile is old tech, the super-turbo combination is the only way to get rid of lag in them! have you driven an s15 with a bit of boost? heaps of torque down low. ever watched WRC? 500+nm at 3000rpm. the right turbo set up can give you massive torque everywhere in the rev range!
98 GU Ti 4.5 Auto Turbo LiLPG
O2 Auto Sports
1/25 Norfolk Ave
South Nowra NSW
o2autosports@bigpond.com
0244230977 0414873727
Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

before boost!!!! read it again

and well done you did your home work good for you your the maybe 25% that do.
most just go big and then complain about lag especialy with a manual, a auto hides this as i am sure you would know. except on take off but a decent stall will fix this as i am sure you know also.

this isnt a who knows more competion rather a forum of opinions .
but a question what is your real fuel ltrs per hundred and do you have a dyno print out to share i would like to see it.
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
Posts: 350
Joined: Sun Mar 02, 2008 10:12 pm
Location: Mackay Qld

Post by Tomo_89 »

offroader-rama wrote:
Tomo_89 wrote:
offroader-rama wrote:top mount with t3 fange brande new around $500 to suit td42 or tb42
where from?
pics?
my mate brought one about 2 weeks ago, i think it was from baudesert exhaust QLD, i will double check that and get back to you all.
it is cast iron looks factory but making it top mount awsome i thought, wouldnt flow like custom stainless ones but at half the price and realistly your not doing much more than 6000rpm if your lucky so who cares.

my 2c
any info on that would be great
01 td42 GU patrol ute, with extra bits and pieces.
[quote="Bluefreak"][quote="ofr57"]flex is over rated :finger:[/quote]

You drive an IFS too, huh...???

:D[/quote]
Posts: 158
Joined: Sun Apr 26, 2009 2:52 pm
Location: Nowra

Post by drifter** * »

offroader-rama wrote:before boost!!!! read it again

and well done you did your home work good for you your the maybe 25% that do.
most just go big and then complain about lag especialy with a manual, a auto hides this as i am sure you would know. except on take off but a decent stall will fix this as i am sure you know also.

this isnt a who knows more competion rather a forum of opinions .
but a question what is your real fuel ltrs per hundred and do you have a dyno print out to share i would like to see it.
i don't get what your trying to say, "before boost"

anyway, not many people in australia have put turbo's on petrol patrols or cruisers and most of the ones i have seen have been gt35's or smaller, most don't complain about lag or "lack of torque" and most seem to run manual's, i don't know where your getting your info from but it doesn't seem consistant with what i've seen. your entitled to your opinion, i agree, like if you prefer v8 to turbo 6's, that's fine. i just don't like incorrect statements like turbos don't have enough torque for towing. its just not true.

p.s. i get 25l/100 around town and towing. i don't have a dyno graph but i did do a 15.05 down the 1/4 if that helps.

p.p.s. this isn't an attack, please don't take offence :lol:
98 GU Ti 4.5 Auto Turbo LiLPG
O2 Auto Sports
1/25 Norfolk Ave
South Nowra NSW
o2autosports@bigpond.com
0244230977 0414873727
Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

i am building my truck to have 500+ pounds of torque at 3500 rpm on lpg through an auto show me a turbo tb42 that can do that.

you got me wrong i LOVE turbos and they improve your car in every form but at the end of the day you have to work out what you want and i have turbo'd cars and think that supercharges and turbos should be mandatory on all cars including v8's they love them to (gee there is a whole lot of love coming through here)

when i planned my build, i said what do i want from it, . i wanted something that pulled like a frieght train with no effort.
i drive with a heavy foot and drive were the power is, i wanted something that would find power at a very low rpm, so as i didnt abuse it.
there is nothing like the feeling when a turbo spools up and the power comes in, my van runs 20 psi, i know!!! and i drive it right were the power starts feeding its feels smoother that way, but means i am always speeding.

have you driven a big v8 i dont mean a gen 3 ss commodore i mean a big old cadilac or chev etc with a big block, you just touch the peddle and you are moving with out coming of idle your doing 60 -70 ks then pop into the next gear and bang your doing 100 with no effort now thats what i am talking about.
thats what i want with a 3 ton being towed behind me.
yes your well built turbo six will do it and do it well but not the same and not as long. but thats why there is a $10,000 price difference between builds.



please note
The $10,000 quoted, is figure i pulled out of thin air and personal costs should be consulted with your finaicial adviser.
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

Tomo_89 wrote:
offroader-rama wrote:
Tomo_89 wrote:
offroader-rama wrote:top mount with t3 fange brande new around $500 to suit td42 or tb42
where from?
pics?
my mate brought one about 2 weeks ago, i think it was from baudesert exhaust QLD, i will double check that and get back to you all.
it is cast iron looks factory but making it top mount awsome i thought, wouldnt flow like custom stainless ones but at half the price and realistly your not doing much more than 6000rpm if your lucky so who cares.

my 2c
any info on that would be great

UPDATE
i asked my mate and the top mount come from "mike vine turbo's" in capalaba QLD and was $580
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
Posts: 574
Joined: Wed Aug 17, 2005 11:49 am
Location: NZ

Post by nzdarin »

chpd80 wrote:"Turbo AND V8""

Now your talking :armsup:
That was going to be my suggestion as that is what I did!
Doesn't really fit the budget I would imagine, as i would hate to pay someone to do all the work I did on mine!!!!!!!! :shock:
93 Nissan Pathfinder / Terrano Turboed VH45, GQ Trans and T-case, coil overs, hydraulic winch and fair bit of other stuff. (Currently a pile of parts in the workshop)
Posts: 388
Joined: Wed May 14, 2008 6:01 pm
Location: the sticks gippsland

Post by waandy »

Jake GQ.. wrote:i think i will have to go turbo. on the weekend the car got hot traveling at 100 so i pulled over and basically it was pushing water out of the radiator overflow bottel instiead of recirculating it so i waited for it to cool and drove it the short distance home and took it to the mechanic on monday. he said it was cavation and it would cost $4000 for some replacement head kit including a sealed water pump. one of my mates said it was a load of shit so wee driled 6 1/8 holes in the thermerstat it made it concideberly better but it still dosent recirculate properly any ideas would be good. there is no water in the oil
hey mate sounds like you have done a head gasket or head, rip the head off, get it pressure tested and see what the go is, if its cracked and if you have a fair few kms might be worth buying a lower km tb42, (my mate got one for around $1000) id go with the lpg turbo to, depending on how you set it up you can have tourqe or top end, v8 conversions are not as cheap as some say then add engineers cert ontop of that, plus you may need brake upgrade etc for the added weight, or go a td42 as i am ;)
85 hi top drover, 31s, 2 inch exended shackles 2 inch bl.
88 tb42 swb mav,35 claws, 4 inch lift
Posts: 345
Joined: Mon Aug 04, 2008 8:48 am

Post by chpd80 »

offroader-rama wrote:
i am building my truck to have 500+ pounds of torque at 3500 rpm on lpg through an auto show me a turbo tb42 that can do that.
If you mean 500 foot pound of torque, that converts to 677 Newton meters which is very easy to achieve, My tb42 Turbo makes over 1100 Nm of torque which is 811 foot pound.

of course I may have misunderstood your statement completely, it has been a big day at work.

Please explain..... I'm Confused :?
Posts: 821
Joined: Mon Aug 14, 2006 8:37 pm
Location: redland bay

Post by offroader-rama »

chpd80 wrote:offroader-rama wrote:
i am building my truck to have 500+ pounds of torque at 3500 rpm on lpg through an auto show me a turbo tb42 that can do that.
If you mean 500 foot pound of torque, that converts to 677 Newton meters which is very easy to achieve, My tb42 Turbo makes over 1100 Nm of torque which is 811 foot pound.

of course I may have misunderstood your statement completely, it has been a big day at work.

Please explain..... I'm Confused :?

your getting 811 wow, at what rev range do you have a dyno sheet because thats awsome what size turbo and what boost fuel etc i would love to know more as i am sure others here would.
GU Twin cab TD42T compound turbos
lwb sierra ca18det, 37" "CANT HOLD ON"
lwb sierra g16a, daily driver
https://www.suspensionstuff.com.au/shop/
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