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[JordanRochelle]

Unsure if this is the right forum to post under..

I'm looking for opinions on whether I would be better to go 20de +T or put a 25 cam into it? 

My friends said 25 cam, I personally want a turbo but can't do both due to high compression? 

This probably makes no sense. (Sorry) just very confused. 

[GTSBoy]

LS3.

[Ben C34]

What is 25 cam? Put it in what?

 

 

Anyway, Ls3

[KiwiRS4T]

Changing the cam will do stuff all. 

Turbo will make it go faster but all advice will be get an RB25 engine (or an LS)

[JordanRochelle]

8 hours ago, Ben C34 said:

What is 25 cam? Put it in what?

 

 

Anyway, Ls3

Sorry, 25 cam shaft? 

[Ben C34]

17 minutes ago, JordanRochelle said:

Sorry, 25 cam shaft? 

changing the cam to any possible other cam in an RB20 is a total waste of time and effort. Turboing an RB20 is also a waste of time as the result will be disapointing.

[GTSBoy]

1 hour ago, JordanRochelle said:

Sorry, 25 cam shaft?

Is that better than an RB20 camshaft?

[niZmO_Man]

You buy RB25DET front cut and then transfer over all the good bits. Don't bother modifying your N/A RB20

[admS15]

LTA is all the rage these days.

[JordanRochelle]

On 15/06/2020 at 7:12 PM, Ben C34 said:

changing the cam to any possible other cam in an RB20 is a total waste of time and effort. Turboing an RB20 is also a waste of time as the result will be disapointing.

Why disappointing? I've seen plenty of 20de+t that go hard... I'm not chasing power or huge numbers. Just something fun

[GTSBoy]

30 minutes ago, JordanRochelle said:

20de+t that go hard

They only go hard above 5000rpm. Everywhere else they suck.

[DaymoR32]

2 hours ago, GTSBoy said:

They only go hard above 5000rpm. Everywhere else they suck.

This ^^^^^

Having previously owned an RB20DET with a few mods and now having a RB25DET NEO

the difference lower down in the rev range is massivley noticeable

[tridentt150v]

Honestly...sell that rolling wreck for whatever you can get for it.  

Buy a going RB25.... if you have to.  Otherwise just about any other car will do till you get off your P's.

Reason, adding a cam is a waste of $$$, changing the motor to an RB25 makes more sense, but is a costly and ultimately futile build.  

Plus by the time you cut out the rust, redo the window seals, fix up the front end, upgrade the brakes, suspension, and other stuff, you are up for big $$$.  Buying an RB25 with all this stuff done and then setting out to improve it even more will cost much less and also  - in the end - be a better car.  Plus side of a 25 is what you take off can be resold.

The only possible reason for continuing with that RB20 is you are starting with a 'blank canvas', but its 12 months to 3 years of hard yakka getting it done.

[JordanRochelle]

On 17/06/2020 at 12:48 PM, tridentt150v said:

Honestly...sell that rolling wreck for whatever you can get for it.  

Buy a going RB25.... if you have to.  Otherwise just about any other car will do till you get off your P's.

Reason, adding a cam is a waste of $$$, changing the motor to an RB25 makes more sense, but is a costly and ultimately futile build.  

Plus by the time you cut out the rust, redo the window seals, fix up the front end, upgrade the brakes, suspension, and other stuff, you are up for big $$$.  Buying an RB25 with all this stuff done and then setting out to improve it even more will cost much less and also  - in the end - be a better car.  Plus side of a 25 is what you take off can be resold.

The only possible reason for continuing with that RB20 is you are starting with a 'blank canvas', but its 12 months to 3 years of hard yakka getting it done.

I'm in NZ so don't have the issues on Ps etc.. 

I have all the parts of this body, the body is straight no rust anywhere.. I just want to keep my 20de cause I have it torn down ready for rebuild. I can get a full rebuild kit cheap asf cause my partner works in parts. Could also get a det block too but I'm just not sure. 

I don't want to put the 25 cam shaft into it, I'd rather get a det block or a +T but the boys reckon a 25 cam would be better ??‍♀️

[Ben C34]

16 minutes ago, JordanRochelle said:

but the boys reckon a 25 cam would be better

so they think an RB25 Cam (assume you are talking inlet only, there are 2? ) in an RB20DE is better than either an RB20DE+T and an RB25DET?

thats potentially the most retarded thing I have read on here in a while. Even with the best camshafts in the world (2 of them) in an RB20DE it is still a heap of shit. even rebuilt.

[GTSBoy]

44 minutes ago, JordanRochelle said:

but the boys reckon a 25 cam would be better

And just to hit this one again....the difference between the 20 cams and the 25 cams is so small that the time, money and effort spent on the swap would be better spent buying 6" railway spikes to hammer into your own skull.

[KiwiRS4T]

2 hours ago, JordanRochelle said:

but the boys reckon a 25 cam would be better ??‍♀️

The boys at the local kindergarten?  Can they tell you how it is different (and I can tell you that as GTSBoy says its SFA) and what difference it will make?

[elohim_imanu]

Good on you for resurrecting another Skyline.

Looks like a big project. If you are in for the long haul, and if I were you, I would look at getting the 20det bock, pistons turbo and build it from the bottom to top. I am not too sure that is all the differences. But do your homework and calculate what it is going to cost, then double it. A good 20det screams nicely. 

Good luck.