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Sr20det,rb20det Or Rb25det In My 910?

MrJai
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MrJai Newbie

MrJai

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Posted

Greetings,

Hi guys..i'm Jai from Malaysia..

i've a few questions and opinions to ask you guys..

i have a 1984 Nissan Bluebird 910..(it's not a skyline..but it's classic.. :D )..just finished bodyworks and full chassis strengthening...this car will be used 100% for drifting purposes only..

now i'm deciding on what engine should i put in it...either SR20det, RB20det or RB25det...

at first i want to use SR20det..but here in my country spare parts and upgrade parts for sr20 are more expensive than RB parts...furthermore...i read a lot that sr20 motor is not as tough as rb motors...especially the valve train components...so..it's very unfortunate that if i want to built more power safely, i need to put a lot of money to upgrade it's reliabiltiy and durability i.e. stiffer valve springs, rocker arm stopper kit, sping retainers, trust oil pan and etc..

RB20det conversion in a 910 is very common here in my country coz it's the cheapest solution..a lot of RB users here are afraid to use sr20 bcoz of the above mentioned factors...as far as i know..there's very few people install RB25det in a 910 coz it's a bit more expensive than Rb20det..

i've tested a rb25det cefiro and i feel that the pulling torque and response is phenomenal!! i believe it's greater than sr20det..

if i install RB25det...will i totally mess up the balance of my 910 for drifting? if anybody know..what's the weight of Rb20det and Rb25det?

i feel that Rb20det's torque comes a bit later in the RPM range...if i use this engine..how can i increase the response and make the torque comes earlier? (like Rb25det and sr20det)

i have no budget constraint if it's a RB coz i know the motor is tougher, reliable & more robust than SR, so guys...what do you guys think? for drifting...should i go for Rb20det or RB25det straight away?

Really appreaciate your advices and recommendations..Thanks :D

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66 skyline gt Experienced

66 skyline gt

Posted
Posted (edited)

rb20........ great bang for buck....and in a light car... pull insanly hard.... ( i should know, ive done it in my lil gt)

140KW @ the treads and it only ways like 1000kg.....

:nyaanyaa:

Edited by 66 skyline gt
discopotato03 Grand Master

discopotato03

Posted
Posted

If you have them there I would consider a KA24DE , belt drive DOHC 16V engine and no rockers like SR20's have . They are a long stroke engine but being a four much shorter than an RB 6 . Bluebirds are a problem with long engines esp FJ20's where they have two staggered twin row timing chains AND a water pump on the timing cover in front of those . These cars fight you all the way with fitting adequate cooling and intercooling systems but it can be done - been there .

As per the 2.4 litres , they make more torque at pedestrian revs than FJ20's/RB20's so you can fit turbos that work well with the combination . In the US they play lots with turboed KA24DE's and there is lots of parts available for them . Here in Aus we get the KA24DE in a comercial vehicle and std it has 8.6CR pistons so has potential unopened . Search Jim Wolf Technology and the US sites who cover the S13 and S14 240SX cars , the S14 had the KA24DE in RWD form .

Cheers A .

GTR30 Community Regular

GTR30

Posted
Posted
he're in Malaysia we don't have KAs..hehe...i'm sure the torque of a KA is phenomenal considering the length of the stroke..

how about between these two..RB25 and SR20 for drifting...what do you recommend...?

go the SR20. Lighter than the RB, has a punchy power curve with a slightly larger turbo, and easier to fit your application

Beer Baron Grand Master

Beer Baron

Posted
Posted

yeah I would go either the RB25 or the SR20. the 20 is a great motor, and light and torquey, but if you have trouble with support and parts in your country then it's probably not a good choice. The 25 will be nice and torquey, and is not much (at all?) heavier than a RB20 so I would go the RB25 in your case.

rsx84 Veteran

rsx84

Posted
Posted

i'd go the SR, if you want it for drifting then thats the go and if the balance of the car is better with the SR then thats another plus.

from what i know drifting seems to be more revs and car balance more than low down torque, mate up a desent turbo and you'll be fine...

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