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ZUKIWORLD Discussion Forum => Technical Discussion - Performance / Modify => Topic started by: kuwait on June 02, 2011, 12:38:17 PM

Title: Turbo Vs Swap
Post by: kuwait on June 02, 2011, 12:38:17 PM
i need more power on my kick i was planning on a 150~ v6 engine but i started to think about the turbo upgrade lately

which one will be better ? which will give more power ? pros and cons ?

and is there a way to raise the turbo boost more than 5 ?
Title: Re: Turbo Vs Swap
Post by: Jluck on June 02, 2011, 08:16:14 PM
do a search on here. there is almost daily talk about the subject. and a couple turbo gods lurking here too. go for it, your in good hands. ;)
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 02, 2011, 10:55:19 PM
You need forged pistons for over 5 PSI boost, as well as an intercooler
but 5 PSI will give you about 50% more power, so it's not a bad start

Wild
Title: Re: Turbo Vs Swap
Post by: kuwait on June 03, 2011, 12:39:51 AM
i did some search but it doesnt answer my question ... for more than 5 psi i only need forged pistons ?

and isnt the turbo easier to install than a engine swap ?
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 03, 2011, 12:46:11 AM
How high are you thinking you would like to boost the engine?
if you want 10 PSI yes forged pistons will do it, you will want
more fuel flow and a water/alcohol supplemental system too

You could add stainless steel exhaust valves, I should of asked
is this an 8V or 16V engine? I ask because adding a turbo to an
8V engine is a big can-o-worms, there is just not enough fuel that
you can squeeze out of a TBI to support over 3 PSI and that is
pushing it

Adding a turbo is easier than an engine swap, and it really depends
on your fabrication skills level

Wild
Title: Re: Turbo Vs Swap
Post by: kuwait on June 03, 2011, 01:30:51 PM
i have a 8v engine ....my kick is kinda wierd since it cant go more than 50mph ...even tho i changed/repaired the engine about 4 times...changed my auto trans then swaped it to manual... still wont go and i cant find the reason why
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 03, 2011, 08:14:13 PM
Have you checked/changed the Cat? it will cause this kind of problem, you
need to check wha the back pressure is, an exhaust shop can do this for you
in a short time and figure if it's your problem

Wild
Title: Re: Turbo Vs Swap
Post by: kuwait on June 05, 2011, 12:49:17 PM
i thought this might be it so i removed the cat completely ...it wasnt it..
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 05, 2011, 07:13:08 PM
I have also seen mice pack a muffler with dry dog food, is that clear too?

Otherwise, turbo will force feed your 8V but it's a royal pain on an 8V, I
have some new ideas to make it a better transition, but I don't know how
well they will work since it's not even prototyped yet

Wild
Title: Re: Turbo Vs Swap
Post by: BRD HNTR on June 06, 2011, 06:44:22 AM
i have a 8v engine ....my kick is kinda wierd since it cant go more than 50mph ...even tho i changed/repaired the engine about 4 times...changed my auto trans then swaped it to manual... still wont go and i cant find the reason why
Only getting 50 mph for a sick Tracker is pretty slow, first thought for me would be gears & tires.  What size tires and what gears in the diff's?
Both a engine swap & turboing a present engine can be a can of worms.  Putting a turbo on a motor that can't do over 50 mph would seem like a wild goose chase to me, especially when WILD says "adding a turbo to an 8V engine is a big can-o-worms". 
There are plenty of readily swapable motors in the HP range you listed without further modifications (turbo charging).  Both options require fabricating and modifying skills, and equipment.  Swapping in a newer motor also requires the ability to read electrical diagrams to match computer and wiring systems, or a complete swap of all wiring in your vehicle.  Trying to do both the first time is a BIG undertaking and could get expensive fast.
I would suggest you look at the 2.0 -2.3 Suzuki 4 cyl. motors, as the closest direct fit/size, and going up to 155 hp.
The suzuki v-6's are not that much harder of a swap, but it is a tight fit, and requires a hood modification or body lift because they are just a little taller. Later model motors have more complex computer systems, making it harder to match computer systems to your vehicle.  And a v6 swap will usually require transmission change also.
Title: Re: Turbo Vs Swap
Post by: kuwait on June 06, 2011, 02:38:42 PM
i have replaced the muffler too ... but never touched the headers tho ...

i think my gears are 5.12 and tires ran 215/75/15 + 31"  and am getting the same speed... maybe 215s was a bit more ...thats all according to a gps speedo so its accurate

and maybe 50mph is not that bad... but it is when it takes 15+ secs to get there
am not that good of a fabricator but a shop in our area done swapping before for some kicks and he always fits Nissan Cedric v6 carb..

so i might try it... since i replaced/repaired 4 kicks engines ...am kinda tired of those lame engines always breaking up and letting me down almost every time i take a long trip "300+ miles"

Title: Re: Turbo Vs Swap
Post by: Lunchbox5k on June 10, 2011, 08:23:52 AM
Hey everyone! Been gone for a long time, moved over to the swedespeed.com forum once I picked up my two turbo volvo's. Missed it here, love the talk of getting the cars dirty, its wonderful! What brings me back is the talk of turbo charging a sidekick. Well after reading posts and hearing that doing so on an 8V is next to impossible. Well I'm game, my target psi for my project was 4-7 max because I already knew how limited our fuel system was. But doing a turbo I think is going to be much nicer and cheaper than doing my original VW diesel swap. I am in need of a manifold and some options of what type of a compressor to use. I've heard a 3000 gt turbo would work very nice. How hard is it to swap over to a carb from FI? I'm sure I would part with my ECM to help fund the project. I really want to make a reliable turbo kick that can handle what we throw at it. Thanks guys and good to be back!
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 10, 2011, 08:38:14 AM
Carb from FI is not hard, it's the pressure box or all of the danger of sucking
an explosive mixture through the turbo and compressing it to 300*  :o

I have been thinking about replacing the TBI injector with 2 larger injectors
that would inject the fuel where the Y on the manifold begins, and let the TBI
computer run the show, I think it will cope with the change OK, but I don't know
for sure.

You will need 2x50-55 PPH high Z injectors to fuel 5 PSI, and you want a turbo
that closer matches the engine size for lag and boost properties, I would say a
turbo for no larger than a 2.0

Wild
Title: Re: Turbo Vs Swap
Post by: Lunchbox5k on June 10, 2011, 08:47:24 AM
Hmm two injectors you say. I like the thought. What about running two stock injectors, I have a spare intake setup from the rebuilt motor. Oh and where would one find a turbo manifold?
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 10, 2011, 09:00:50 AM
I toyed with the idea of twin TBIs, there is just too much to doing that
being the coolant runs through the intake, and what about the throttles
and the plumbing to get it all working .... Ugg

The stock TBI injector is not a stand alone, it needs the throttle body to
hold the fuel presure around it, being it's a "side feed" type.

Replacing the stock TBI with 2 added injectors solves this trouble, and if
wanted, you could use the stock TBI to inject water or alcohol or a mix
for detonation control under boost conditions

I added 4x17 PPH injectors from a Ford Escort, these with the stock TBI
all injecting was a powerful mix, near dead on for power but the 4 added
injectors were wide open, so even a pair of 55s might be not enough, but
I would start there, and move up to 58s or 60s as you tune the system 

Wild
Title: Re: Turbo Vs Swap
Post by: Lunchbox5k on June 10, 2011, 09:45:57 AM
So how do you have all of those added injectors wired in and plumbed and mounted that seems like one heck of a task!
Title: Re: Turbo Vs Swap
Post by: wildgoody on June 10, 2011, 10:55:43 AM
I used a MegaSquirt stand alone as a secondary EFI computer
Title: Re: Turbo Vs Swap
Post by: BRD HNTR on June 12, 2011, 09:53:23 PM
i have replaced the muffler too ... but never touched the headers tho ...

i think my gears are 5.12 and tires ran 215/75/15 + 31"  and am getting the same speed... maybe 215s was a bit more ...thats all according to a gps speedo so its accurate

and maybe 50mph is not that bad... but it is when it takes 15+ secs to get there
am not that good of a fabricator but a shop in our area done swapping before for some kicks and he always fits Nissan Cedric v6 carb..

so i might try it... since i replaced/repaired 4 kicks engines ...am kinda tired of those lame engines always breaking up and letting me down almost every time i take a long trip "300+ miles"



A carbed motor should eliminate most matching electronics issues.  Extra Hp is Great!!  It is hard to stay out of it, so mpg will suffer for a while.

215x75x15 tires are not +31".  31+" tires will bog an 8 valve down, making it hard to run in 5th gear or even reach 50 mph (I know some are doing it, but it is normally hard).  215X75x15 are just .5" larger than stock, and should not have too much effect on performance.
Title: Re: Turbo Vs Swap
Post by: entities on June 15, 2011, 11:28:12 AM
A carbed motor should eliminate most matching electronics issues.  Extra Hp is Great!!  It is hard to stay out of it, so mpg will suffer for a while.

215x75x15 tires are not +31".  31+" tires will bog an 8 valve down, making it hard to run in 5th gear or even reach 50 mph (I know some are doing it, but it is normally hard).  215X75x15 are just .5" larger than stock, and should not have too much effect on performance.

My 8V doesn't mind my 31s...  And I'm in CO elevation!  5th gear won't pull up hills, but it'll hold 70+ mph on the interstate...!  Just don't shift below 3750 rpm...

-Chad
Title: Re: Turbo Vs Swap
Post by: kuwait on June 16, 2011, 01:31:13 PM
i have replaced the muffler too ... but never touched the headers tho ...

i think my gears are 5.12 and tires ran 215/75/15 + 31"  and am getting the same speed... maybe 215s was a bit more ...thats all according to a gps speedo so its accurate

and maybe 50mph is not that bad... but it is when it takes 15+ secs to get there
am not that good of a fabricator but a shop in our area done swapping before for some kicks and he always fits Nissan Cedric v6 carb..

so i might try it... since i replaced/repaired 4 kicks engines ...am kinda tired of those lame engines always breaking up and letting me down almost every time i take a long trip "300+ miles"



A carbed motor should eliminate most matching electronics issues.  Extra Hp is Great!!  It is hard to stay out of it, so mpg will suffer for a while.

215x75x15 tires are not +31".  31+" tires will bog an 8 valve down, making it hard to run in 5th gear or even reach 50 mph (I know some are doing it, but it is normally hard).  215X75x15 are just .5" larger than stock, and should not have too much effect on performance.


maybe i was not clear but what i mean with "215/75/15 + 31" is that i had both sizes on my kick
Title: Re: Turbo Vs Swap
Post by: BRD HNTR on June 17, 2011, 06:35:02 AM
I do hope that you have a 2wd Kick.  With that difference in tire size 4wd will cause severe binding, and eventually something will break.  Not to mention that it will use a lot of power working against the tire size difference.
Title: Re: Turbo Vs Swap
Post by: kuwait on June 17, 2011, 02:30:27 PM
nah ..we dont have 2wd kicks in Kuwait... all 4wd`s