Author Topic: sr20 in a u12  (Read 4105 times)

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Offline gach2

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sr20 in a u12
« on: Feb 19, 2010, 07:02PM »
just wondering exactly what would i need to get a sr20de/t
in a u12 nissan pintara trx
well as most conversions im gonna need
engine,ecu and wiring loom, headers and manifold and rest of engine bolt ons
and if sr20det turbo intercooler etc
my main concern is what custom part are going to be needed
to bolt the engine what mounts do i need? (custom or can they be purchased of the shelf)
and is there any custom fabrication im going to need? (to fit sr20)
also with the gearbox ive heard ka24 gearboxs can be used, but need a bellhousing, are these custom or off the shelf and also for people previously done this conversion how much do these bellhousing costs
i know ive missed lot of key things
so feel free to correct me etc
and thanks in advance for replies

Offline SleepaTi

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Re: sr20 in a u12
« Reply #1 on: Feb 19, 2010, 09:05PM »
cheaper to do a ka24de conversion, no pissing around with gearboxes & "fabrications"
buy a u13 2.4L & throw it in, wiring is a breeze & it bolts straight up to your original g'box
NO! it's NOT a fucking SR20!!

Offline gach2

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Re: sr20 in a u12
« Reply #2 on: Feb 19, 2010, 10:17PM »
yeah but getting power out of a ka24de isnt gonna be cheap
hence sr20det looks more appealing to me as it was a turbo motor
built by nissan to have boost

i just put sr20de as an extra example
as im guessing the bolting of the motor would be the same both

Offline SleepaTi

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Re: sr20 in a u12
« Reply #3 on: Feb 20, 2010, 12:24AM »
a 24det can make heaps of power :P
mine ramped up 182fwkw on only 6psi with basic mods & a shitty ebay .made in china. fanimold
spend the same money on a ka that you would with an sr & you'll have a much more reliable engine..
even just a low k 2.4 with a fresh headgasket will be just fine as they are already heavily forged internally
also the massive torque the ka makes over the sr is insane, the ka starts making it from 1500 (well mine does anyway)

but yeah i'm anti-sr so do what you like :P
NO! it's NOT a fucking SR20!!

Offline Dyken

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Re: sr20 in a u12
« Reply #4 on: Feb 20, 2010, 10:52AM »
Hey mate,

I have both an SR20DET and a KA24DE in my garage I'm looking to sell.

If you are interested let me know


Cheers

Offline KA24ET

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Re: sr20 in a u12
« Reply #5 on: Feb 21, 2010, 11:38AM »
I too weighed this option up heavily.

here is a basic rundown of cost comparison i worked out
(best mate is a mechanic too, with a 230KW SR20det hence the comparison)

Using the standard KA24e

Injectors = $100
Fuel pump= $140
Turbo= $1300 for a garret $140 ebay junk.
Manifold = $120 DIY
Cooler= $100
Turbo lines/coolant lines = $100
AFM= rb25det $150 ish with a plug
Ecu= Nistune  $ 300 or Aftermarket $2k ish fitted
Dump pipe= $50 DIY
Dyno tune = $750ish
BOV= $100ish
Cam = $220

Left a few bits and pieces out... if ur interested ask me, i can bore u senseless with the ins and outs of turboing ur KA and the little custom things people forget.
Easy 180kwatw relaible with good tune

Sr20 Option
Nobody uses U13 junk.
U need a W10 or W11 front cut or similar from an Avenir
W10 with box and loom(auto) is $1400
Fitting is a nightmare, best left to a shop....
Ur manual box wont fit. You can change the gear sets but its more money than buyin a Nismo LSD easily obtained for around $900
So prob near 4k before u touch it.
The standard T25 setup will get 150kwatw with a simple cooler and fuel upgrade but then the turbo is done.
Decent garret GT2871. 1300 new. looking at 180KWatw. Some cams, round 272 duration lookin at 220-230 kwatw
But u need 550 cc injectors a walbro or equivalant, and a good tune, Nistune is fine. No need for aftermarket
So on a cost only basis, Go KA.
On a Possible performance outcome... SR

My Ka makeS more Torque and better traction than the SR, even tho he has more power than me(NOT FOR LONG)
my 0.2c





Offline SSS

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Re: sr20 in a u12
« Reply #6 on: Feb 22, 2010, 07:17AM »
Injectors = $100
RX7 550's or GC8 WRX 440's?

Quote
Fuel pump= $140
Bosch or Walbro? I've been running a Walbro 255 for the last couple of years, they seem fine.

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Turbo= $1300 for a garret $140 ebay junk.
What did you run?

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Manifold = $120 DIY
Out of reach for most, mostly due to lack of welding gear.

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Cooler= $100

Second hand i'm assuming?

Quote
Turbo lines/coolant lines = $100
Again, depends on what you use, low ball you should be able to get lines done for under this, or to be real baller and run everything AN, figure $200ish.

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AFM= rb25det $150 ish with a plug
Agreed, you can get away with the std MAF on a low boost (<6psi) setup with a retune.

Quote
Ecu= Nistune  $ 300 or Aftermarket $2k ish fitted
Wouldn't bother with an aftermarket ecu unless you need the extra outputs, nistune/ nemesys (with a NVSram board - $70) / Moates Ostrich in a std ecu is more than enough, and can be converted to MAP too.

Quote
Dump pipe= $50 DIY
Again, most need to pay someone else to fabricate. Figure $100-200 as an estimate to get someone to fabricate a dump pipe.

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Dyno tune = $750ish
Buy a wideband for that money and tune it on the road!!!!

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BOV= $100ish

Second hand?

Quote
Cam = $220
Get yours done through Wades?

Quote
Left a few bits and pieces out... if ur interested ask me, i can bore u senseless with the ins and outs of turboing ur KA and the little custom things people forget.
Easy 180kwatw relaible with good tune
Dealing with crankcase ventilation seems to be #1 issue, #2 being blowing out ring lands with too much timing and detonating the engine!

A built KA will shit all over a built SR. And if the sohc head ends up becoming a restriction and you don't want to spend $$$ on it, changes to a DE head.

Offline KA24ET

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Re: sr20 in a u12
« Reply #7 on: Feb 22, 2010, 11:35AM »
460cc rx7 injectors
Walbro pump
GT2871r is my choice with the smaller option... In hindsight, wrong choice, needed the .86
Ebay cooler runs 18psi no sweat
Re routing the bottom hose to miss the dump pipe, braided turbo lines
moving the solid mounted heater hoses and using them for turbo..

Been down the ecu line already, horses for courses.
Easy for us to sit here and say one is better than other. Both will do the job
To what extent is tuner dependent
On a budget nistune would suffice
Cam is Camtech

Agreed i can fabricate alot of stuff,

Yep 2nd hand BOV

Not a fan of street tuning, little unsafe for me!
Better result with a dyno

I agree Crankase was an issue, but resolved
Detonation is from poor tuning...Bad fuel or excess boost, or a combo



Offline Jono

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Re: sr20 in a u12
« Reply #8 on: Feb 23, 2010, 10:31PM »
Check out Kranzy's and Pedro666's build threads for some more info on SR -> U12 conversions.

Kranzy's: http://www.antrx.com/smf/index.php/topic,13726.msg222401.html#msg222401

Pedro666's: http://www.antrx.com/smf/index.php/topic,16260.0.html
#1 Post Wh0re
pringles was here!

Offline pedro666

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Re: sr20 in a u12
« Reply #9 on: Feb 24, 2010, 07:28AM »
im sure he didnt mean on the ´śtreet´ , rather test´n´tune runs. cheaper & more fun than sitting in a room tuning.;)
the words "race car" spelled backward still spell "race car"? 




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Offline chr1S

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Re: sr20 in a u12
« Reply #10 on: Feb 24, 2010, 07:25PM »
I disagree heavily with the SR has better performance.

Look at your general physics rules and you will see that the KA has a much greater potential. The only issue that springs to mind is the SR MIGHT be more efficient making power obtainable easier. But its not a matter of "rebuilding" there is alot more to that.

Sr's are over rated pieces of shit.
Don't let the opinions of the average man sway you. Dream, and he thinks you're crazy. Succeed, and he thinks you're lucky. Acquire wealth, and he thinks you're greedy. Pay no attention. He simply doesn't understand.

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to be fair, it wouldn't be ANTRX if we stayed on topic.

and if someone wasn't cranky at Chr1s for something he said...

Offline pedro666

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Re: sr20 in a u12
« Reply #11 on: Feb 24, 2010, 09:17PM »
if they made a vvl KA ,i would have gone for that...
the words "race car" spelled backward still spell "race car"? 




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