Rb20 Engine

[wheels_24]

HI guys need help it looks like i have done the rings in my car at the moment i am running 16psi with all the bolt on gear what should i do? Should i just buy a new second hand engine for about $800 and change them over or rebuild the one i have which is going to be about $2500+ all depends what i put in it any help would be great or advise what i should do but i don't want this to happen 6 months down the track because i am running to much boost or power. Should i just take the hit and spend the money?

[TTT]

sell it as parts.

build RB30det

then your 210rwkw and 729NM will be what you get before boost comes in..

well maybe not that much but you get the idea

[Turbine]

Yeh well the rb30 engine will have an extended torque curve that nice on the street. Just check if it's legal to put that in the car.

I'd probably just repair whats failed, spend as little as you need so you can get back on the road as soon as you can.

[Angry]

i like your idea of buying a 2nd motor and pulling the shagged one out .. cheapest way to stay on the road.... if your inclinedto stay rb20 .. spendmoney on pistons .... and head work ....should be nice then

that was u that was smsing me wasnt it? bout the rb24? not going that route anymore?

[pnblight]

HI guys need help it looks like i have done the rings in my car at the moment i am running 16psi with all the bolt on gear what should i do? Should i just buy a new second hand engine for about $800 and change them over or rebuild the one i have which is going to be about $2500+ all depends what i put in it any help would be great or advise what i should do but i don't want this to happen 6 months down the track because i am running to much boost or power. Should i just take the hit and spend the money?

<{POST_SNAPBACK}>

Well depends a lot on your finances and your plans for the car i personally think just buying another 2 hand engine isn't the best idea you have no idea on its condition and you could be back to square one 6 months down the road. I would if the budget could cope buy gtr crank and rods(~$550 to $500) and a set of tomei 2.4litre pistons(~$1600 not sure on $) for the rb20(rb24) which then can produce more torque than a rb25 in std form because of the longer stoke. It's a bit more money but it would be strong, torquee, and new .Plus the added capacity with spool the turbo quicker and add more botoom end punch. And it would be something different to the norm. I would think a combo like this could produce 400rwhp(300rwkw) with out over extending it self (with the right surporting bolt ons).

pete

[Maxx]

but the RB20 head is more restrict than Rb25 head and lack of VVT,

the stock rb25 "should" able to provide better spool up time and maybe more mid range.

and it only cost 1/2 of the rb24

[Flaps]

Get an RB25 or 26 or 30

[dangerous_daveo]

Other than the options already listed....

Go mental on the head, cams, etc, as much as you can either afford or is posible to do with the head, get the HEAD o-ringed also. Then just keep on buying short bottom ends. Or if you buy a compleat motor, sell the head and the turbo off that. I think you will find tho, it could be your tune, the power your getting isnt THAT much, I think with a lot of head work you could get a fair wack more, and a good tune will get more and make it safer. The swap engine will also be a LOT faster than getting a new one built up.

But yeah, unlimited budget, build a fullhouse RB30DET/T.

[pnblight]

but the RB20 head is more restrict than Rb25 head and lack of VVT,

the stock rb25 "should" able to provide better spool up time and maybe more mid range.

and it only cost 1/2 of the rb24

<{POST_SNAPBACK}>

Maxx are you comparing apples with apples because I cant see how on earth you can build a rb25 with gtr and tomei forged piston for half the price of a rb20 and if your not then the rb20 with strengthen rods and forged pistons could take twice the beating the std second hand rb25(you are never sure how good a second rb25 is going to be) and the 100cc exact capacity wont out balance you'll gain you will get with the long stoke configuration.

pete

ps was just giving the guy alternatives to the norm

[wheels_24]

Yer guys the bugdet is a little tight but i still don't want to take short cuts and be stuck later on with the same problem. the problem is i don't get a warrenty with the 2nd hand motor as i am running that boost they said they won't warrent andthing over standard boost boooooo! so i am going to get the engine pulled apart and find out what the problem is and i am hoping that the cylinder haven't over sized and i can just replace the rings and be done with it and not the full rebild fingers crossed

[Roy]

Get a wrecker engine with warranty. At the power we have if looked after they will last a long while and put up with a what soem would consider abuse...i consider it enjoyment. Just drive it around for a few thousand kms puttign afew fresh sumps of oil adn coolant thru it adn see how it goes. If its got a problem it will show when you dump the oil at 500kms and take it for a spin...just talk it through with the wrecker and be honest about what it is you will doing with the engine in the first instance

I still have a perfectly good spare bottom end, that one day if i could be bothered i may try to rebuild with some new ebarings to go with a reco head with cams. Cheap experiment to see what power they are good for given a clean sheet.

I dont think the RB20 represents good hp per dollar once you start cracking open the motor. Throw the good gear on it, but when you consider the cost of pistons, rods and cams etc, then the RB30 and RB25 head can can be bought for about the same money you can sell the RB20

Before going any further, i would consider why the engine died in the first place. I have formed the opinion that 210rwkws is nowhere near the limit of what a completely std RB20 can handle...so something must have given up the ghost...best identify that and make sure its fixed before you spend money on another engine/rebuild

Edited August 19, 2005 by Roy