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Difference Between Rb20det In (gts-t) Vs (gts4-t)

RipNGrip

By RipNGrip,
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RipNGrip

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HEy guys, i am wondering what the differences are between the rb20det in a gts-t and a gts4-t in a r32?

sump? front diff? Are they interchangable if u change the sump?

I have a gts4-t and i am looking for a newer fresher rb20det but gts4-t are quite hard to find, well newer engines!

MADGT4 Mentor

MADGT4

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If your looking for spare GTS4 motors im sure a while back when i got some stuff from Jap Spares he said he had like 4 of them sitting around. RB20 GTS4 motors.

But from what i can tell is that the sump must be changed and thats basically it.

I too have been toying with the idea of a newer fresher motor but until mine bites the dust then im happy with it.

gts4diehard Rising Star

gts4diehard

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from memory the engine block is different on a gts4 to a gtst , the gts4 has the big bolt holes for bolting the sump/front diff to the engine, it has the smaller holes for just bolting a normal sump to it also. Making a gts4 motor into a GTSt motor would work but I don't think you can go from a gtst to a gts4 because it won't have the bolt holes for the front diff...

I maybe wrong but I would definitely go and look at a GTST block and see if it has the holes for bolting the front diff to before I bought one.

RipNGrip Collaborator

RipNGrip

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Heller44: Totally right.......... rb26 well it would fit easy so would a 4wd stagea (i think) and i would love the extra response and power from both those engines! The 26 has soo much modding potential but realistically i cant afford to run a 26 when i go back to uni. I am working now but full-time uni = no money = no rb26dett = :P

gts4diehard: I called a jap wrecker the yesterday (any jap - bris) and he said the same thing u did. That the block is slightly different and that u could swap the engine models but only one way... So gts4-t to gtst but not gtst to gts4-t

The only reason i am freaking out is because my car started heistating/stalling/misfiring can't find the problem so i am sending it to a mechanic but i think it might be a slight leak in the HEADGASKET so i thought a newer fresher rb would be a cheaper/more reasonable idea.

Cubes Grand Master

Cubes

Posted
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Another option to give you something to think about......

If you want the bottom end fresh why not send it off for a light refresh. Just hone, rings + bearings. Shouldn't cost any more than 1.1-1.3k + labour to remove install the motor which is what you would be up for if you were to drop a s/h motor in anyway. :)

$280 or so for a Nissan VRS full top end kit, have new valve stems fitted for $100-150ish (shouldn't cost any more if the people doing the work have worked on the dohc heads before + have all the tools required) and possibly a valve grind.

You should get away with a fresh rb20det for 1.8k or so.

Shop around, speak to a few cylinder head shops and a few engine reco places that do bulk work as they are the ones who are usually cheap. :banana:

I know Jap Import Spares <looks at sig> had a GTS4 RB20DET recently; drop them a line see what they want from it and if they can ship it over to you and how much for. Make a mention your from SAU and Tim may look after you. :banana:

RipNGrip Collaborator

RipNGrip

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Thanks Cubes, Yeh dropping the car to the mechanic soon after lossing a diagnositic battle with my rb20det! Soo hopfully they can tell me whats the go with my car.... and i should be able to pull together 2-3 grand for a refresh of the bottom half and top hopefully! I wait for the diagnosis from the mechanic then figure it out.... i would like to have a rb20 that is reliable and fairly powerful. Some weekend drives and short run work and back. i would like to push btn 180 to 200 kws if i can afford it! :blink:

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