A31 SR20 vs RB20 comparison

[d_zul]

Hi all.. I'm a new member and need some information on the differences between these two engines in a Cefiro A31..Please feel free to share your knowledge..

The main areas are..

The Engine, gearbox, Differential, prop shaft, rear suspension, rear knuckles, drive shafts transplant ..is it straight forward without mountings modifications from the half cut for RB20??

For SR20 transplant. which prop shaft is usually used?? If using SR20 prop shaft, can it be mated to a RB20 differential without cutting and welding the prop shaft??..

Money wise..
Which engine, gearbox part is cheaper to maintain...SR or RB..??

 

[sb3]

Hi all.. I'm a new member and need some information on the differences between these two engines in a Cefiro A31..Please feel free to share your knowledge..

The main areas are..

The Engine, gearbox, Differential, prop shaft, rear suspension, rear knuckles, drive shafts transplant ..is it straight forward without mountings modifications from the half cut for RB20??

For SR20 transplant. which prop shaft is usually used?? If using SR20 prop shaft, can it be mated to a RB20 differential without cutting and welding the prop shaft??..

Money wise..
Which engine, gearbox part is cheaper to maintain...SR or RB..??

Welcome to Cefiro club,


First of all RB20s are direct swap to your A31 . It is whole lot easier than swapping sr20s as if not mistaken you would need mod slightly the cross member ang the g/box mounting . For SR20 alot of wiring works needs be done. Measurements of the prop shaft between both engines are different therefor, you would need to mods the propshaft as well .

The main advantages of th SR20 are listed below:-

- Lighter engine weight

- Less pistons = less maintainance cost.

- You'll feel less understeer during touge tourings and cornering experiences as the engine sit nearer to the firewall, hence better weight distribution.

- Better traffic lights launches.


just my 2 cents

SB3.

 

[d_zul]

Thanks for the Info SB3...much appreciated...

That means that there are minor modifications on some of the mountings for the engine and gearbox..

Do you know how much a recondition turbo for the RB or SR would cost on average??

 

[weikee]

RB and SR turbine recondition should be similar. Engine wise, SR20 is more expensive than RB20. SR engine have got more "parent" buying. Even the Toyota, old mitsu Lancer, BMW are adopting SR. Especially the SR from S13 and S14. The RB25 will be slightly more expensive than the SR20 but give you more power and torque for the weight of A31.

Both engine are work horse, SR have less maintenance worry. RB need to change timing belt every 60 to 80kkm

 

[sb3]

Thanks for the Info SB3...much appreciated...

That means that there are minor modifications on some of the mountings for the engine and gearbox..

Do you know how much a recondition turbo for the RB or SR would cost on average??

The turbo compressor only or the whole half cut thingy?

 

[DrifterKao]

ney its actually the best conversion for A31!

And its never a hard thing to transplant with a Good workshop. As i myself using it.

Thing i enjoy after having Sr20det from s14 is cornering...its never been better after i had this. I enjoy drifting and touge so much now days. My fren which having RB20det is like having all the problems like maintainance and understeering problem.

And Believe or not. I can even over took them in Strait. Unless they are using RB25det.

But after i using GTSS turbo....Hohoho i can over take them anytime...

with a easy Ecu , fuel pump , injections , and turbo. tat it...u get easy 300wbhp at least! with stock internals. And its still very durable!

If u need help in finding people to do the transplant just Drop me a PM.

 

[d_zul]

The turbo compressor only or the whole half cut thingy?

I was referring for only the Turbo.. How much does to repair/replace if the Turbo kaput...

anyone knows any good Turbo Shop that sell recond turbo??

---------- Post added at 05:35 PM ---------- 6 hour anti-bump limit - Previous post was at 05:30 PM ----------

My fren which having RB20det is like having all the problems like maintainance and understeering problem.

Is this because the RB20 engine is not as reliable as the SR20 engine?

I heard some people say that the maintenance for RB20 is cheaper than SR20 because the parts are cheaper.. is this true??

What are the common problems for RB20 & SR20 Engines?? Anyone have any experience??

 

[DrifterKao]

if u wan performance wise...just sr20det...no regret.SR20DET is good in all mean.
After market part is cheap!

RB20 only cheap if u wan to remain stock. Part for aftermarket RB20 isnt cheap...its as exp as all RB does

 

[sb3]

I was referring for only the Turbo.. How much does to repair/replace if the Turbo kaput...

anyone knows any good Turbo Shop that sell recond turbo?? If ur RB20 turbo kaput , just get the RB25 ball bearing turbo , You'll get instant boost and ur rev meter will keep hitting the rev limter! If you don't do a bypass!No need to repair your ori turbolah , not cheap you know..

---------- Post added at 05:35 PM ---------- 6 hour anti-bump limit - Previous post was at 05:30 PM ----------



Is this because the RB20 engine is not as reliable as the SR20 engine?

I heard some people say that the maintenance for RB20 is cheaper than SR20 because the parts are cheaper.. is this true??

What are the common problems for RB20 & SR20 Engines?? Anyone have any experience??

If ur RB20 turbo kaput , just get the RB25 ball bearing turbo , You'll get instant boost and ur rev meter will keep hitting the rev limter! If you don't do a bypass!No need to repair your ori turbolah , not cheap you know..

---------- Post added at 11:13 PM ---------- 6 hour anti-bump limit - Previous post was at 11:09 PM ----------

SR20DET not that cheap anymore after the drift fever came to our shores.. RB20det is less in demand , hence cheaper but also can drift but the front end is heavier than the SR20det, hence more tendency to understeer ! But pratice makes perfect!

 

[DrifterKao]

If u compare After market parts. SR20det Is much cheaper la.

RB20DET is cheap only engine itself or OEM parts.

RB25det turbo is weakest of all. Boost above 1.1bar will Kills the Ceramic Fin real Fast.

But if u insist stay stock ...then RB20DET is suit for u

 

[d_zul]

How much whp and torque do the standard SR20 and RB20 engine produce?
What would be the basic modification for SR20 and RB20 to get more hp?

I heard that the rear sub assembly (suspension+diff+knuckle+arms) from an R32 is a direct conversion to the A31 is this true..If so how do you tell the difference between a Standard rear sub assembly and a R32 sub assembly??

 

[Hall]

Sony Mix LiveRB20....confusion... - Hardtuned.net[/url]... -
chek out this like
i hope you will find your answer

 

[DrifterKao]

no diff...just maybe stronger enforcement. the Diff is still R200.

STD? hahaha dont see std. see only wat u can do next.