SR20VET or DET for the S13?

Discussion of technical issues and ideas (engine, chassis)

Moderators: P3g4sus, Daniel, rat, Draco, Riekert

Which motor to swap in?

SR20VE(T)
2
15%
SR20DET
8
62%
Nah stay CA18! Old skool JDM rulez
3
23%
 
Total votes: 13

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Doctor G
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Post by Doctor G »

true about the RB range, but my wallet doest stretch that far. Getting it in is one thing, what happens when something breaks? $$$$ :shock:

I personally dig the CA18 range as well. We had 3 x CA18 N/a sentras in the family and they truely are little rockets when they are running well.

But having had experience with SR motors the market is just more open to them. It's sometimes nice to have a bit of choice when you're looking for parts.

So what would be a normal, average, good, excellent and awesome wkw figure for a SR20det then?

I'm aiming for around 250 - 350 wkw turbo only.
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Sokar
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Post by Sokar »

johansx wrote:How difficult is it to get rid of the front diff in the RB26dett sump?
The only way I've heard of is using a RB25 or an after market sump.

Either that or you can weld up the holes by yourself, YEEEEHAAAA!!!!
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johansx
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Post by johansx »

Sokar wrote:
johansx wrote:How difficult is it to get rid of the front diff in the RB26dett sump?
The only way I've heard of is using a RB25 or an after market sump.

Either that or you can weld up the holes by yourself, YEEEEHAAAA!!!!
A nice high capacity drifting sump.... :lol:
I am just too lazy to read the WSM pdf. :wink:
Sure the diff would have some mounting spots inside/under the block. Will ask Andre next time I go to Rustenburg.
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Gary57
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Post by Gary57 »

I'm aiming for around 250 - 350 wkw turbo only.
I think that is pushing it unless you are looking at spending some serious dosh. I think Riaan is pushing 240RwKw and that cost him something like R40k, but I might be mistaken :lol: .
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Sokar
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Post by Sokar »

Gary57 wrote:Riaan is pushing 240RwKw and that cost him something like R40k
Oh, I think it was quite a bit more than R40k.....
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The Calibrator
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Post by The Calibrator »

250wkw not to difficult while keeping a smooth torquey drive and reliability. MAx 1.5bar boost needed.

300wkw costs more and will have lag due to turbo size required and around 2bar boost

350wkw will have plenty lag due to turbo size required and 2 bar plus boost

You decide what you want there are NO freee lunches.
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Toby
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Post by Toby »

Does noone want to try a supercharger + turbo combo? Like VW did with the little 1.4 golf recently? Loads of power and no lag? Doesn't that sound nice? :D
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Post by The Calibrator »

Toby wrote:Does noone want to try a supercharger + turbo combo? Like VW did with the little 1.4 golf recently? Loads of power and no lag? Doesn't that sound nice? :D
Lotsa money and complex plumbing and complex belt arrangements. Use the right BB turbo and you will have boost from as low as 1500rpm.
Like Qwerties car
1500rpm= 0.2bar
3000rpm= 0.5bar
4000rpm 1.5bar if you want it.
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Doctor G
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Post by Doctor G »

Ok one more option has now entered my mind.

CA20DET. Anyone know which cars in SA came with the CA20 motors? I presume it must have been the old skylines?

Anyways, CA20 crank apparently bolts up to the CA18 block, or CA18 head bolts up to the CA20 block. Can't recall the details anymore.

Granted some custom forged (honda) pistons and mitshubishi rods are needed to make this work but can be another option to consider. Seeing that the CA18DET is in fact just a 4 cylinder version of the mightly RB series motors...


Also, anyone on this forum have a low port (8 runner) CA18DET in their cars?
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Sokar
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Post by Sokar »

AFAIK the CA20's crank is weaker, you dont wanna use it for a stroker
Doctor G wrote: Also, anyone on this forum have a low port (8 runner) CA18DET in their cars?
Draco has an 8 port but from what I've read you want the 4 port for more flow at high RPM's
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Post by Vlade »

Doctor G wrote: CA18 head bolts up to the CA20 block. Can't recall the details anymore.
I read an article where someone tried this, there biggest problem was there was no mounting holes in the block for the timing belt pulley's and also they couldn't find timing belt that fitted once they had it on, since the CA20 was only ever 8V.
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jap spec
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Post by jap spec »

To get an SR to run 350kw you gonna have to spend real money, which buy the sounds of things isnt an option... The sr is awesome, but if you plan on getting that kind of power and for a relatively good price, go with the RB.. I have an RB and at 0.6 bar its 245kw on the fly with 330nm... its a real fun motor with loads of potential, and thats in standard form... the sr makes half that power basically... I have an SR and am looking for that kind of power, but to run realiable the money is getting out of hand.... I recon an RB at a bar with a GT3037 or even a GT3540 will be mad... Thats the way im going.. so far ive spent 16k on motor and box with the RB, and its more fun than most of the cars ive driven... i recon that motor in a light body will be crazy fun.... and if you run it .4 bar, 207 on the fly....more than a CA or SR will have at probably .7...
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Doctor G
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Post by Doctor G »

The article stated that a CA20 crank is forged, unlike the CA18 unit? Is it 4cw or 8cw?

Bruno how much work was it to make the RB fit? Engine mountings etc? How much power can it handle before internals etc are needed?
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Phinx
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Post by Phinx »

How much power can it handle before internals etc are
More power then the drive shaft and Diff can take.

RB are rock solid, But damn expensive to run and maintain.

Also with regards to the CA20DET, Don't expect to much gain from the extra CC...


Look if you want serious power and reliability every day, The only real swap is RB25 / RB26. They can push the required number with a smile when just set-up correctly

maybe go 2JZ :lol:
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1993 Nissan 200 SX
148 Kw - 250 NM @ 0.55 bar. 1.8T ATW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1989 Toyota Corrola
63kw - 117nm 1.3- N/A
18.2 @118,4 Km - Rainbow Raceway
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Doctor G
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Post by Doctor G »

Phinx wrote:
maybe go 2JZ :lol:
Blasphemy!! :twisted:


After speaking to a few sources it seems the best option at this stage given my budget would be the normal HP SR20DET.

Once the '20V' VE heads become available I will give it some head work and swap it on.
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