RB20 turbo onto L20ET again

[machg]

Guys,

You know the hot air pipe that runs off the dump pipe up to the intake manifold just below the overboost valve on the L20ET? Will the engine still run OK if I blank off the intake side, as the RB dump pipe doesn't have a hole to let the hot air out?

Oh, by the way, this is a fairly straight foward conversion, but for a couple of niggly fit problems due to the proximity of the intake manifold on the L20ET engine, much thanks to David Griffiths Automotive, Moonah.

machg

[stagefumer11]

that small pipe is only for the egr valve which is for emissions, unplug the egr unit, and block off the piping, and you will be sweet

good to see it went well im about to go and do it myself as my fatroy turbo is rooted. how much better does she go ?

and what was the minior problem in installing it ?

[machg]

that small pipe is only for the egr valve which is for emissions, unplug the egr unit, and block off the piping, and you will be sweet  

good to see it went well im about to go and do it myself as my fatroy turbo is rooted. how much better does she go ?  

and what was the minior problem in installing it ?

The gentle radius 90 degree bend attachment on compressor output side of the turbo fouls the intake manifold. I was very lucky, saw this coming and managed to find a different attachment that bolted on to the output side of the turbo. (thanks again to David Griffiths Automotive) She's not running yet, I've got to get two broken studs fixed before I bolt it all back together.

machg

[machg]

G'day all,

Car is going, registered etc.

Performance wise, there doesn't seem to be much difference to the old turbo, maybe a little guicker getting onto boost, but as its running standard boost (hey, I guess the adapted wastgate actuator works!) goes the same as the old turbo, pretty much. Me thinks its time to wind up the boost a little. For on occasional fang on 95RON what would be a safe boost level? (still have the "overboost" failsafe fitted)

Thanks guys for all your help and advise,

machg

[V8skylineMAN]

i would say 3psi is a safe number to go over stock.........

[stagefumer11]

the design of the l20et head lets your run quite a high amount of boost, i was running 14psi with out a intercooler, and wasnt leaning out. and not pinging.

Id sit in 8-10psi, untill you intercool it, Also Rb20det injectors bolt right in and work fine, you need a bit of AFM adjustment tweeking tho. but is woth the extra fuel.

[machg]

:angel: Already have standard R33 GTST cooler front mounted. (Done initially for longevity rather than performance) :angel: Refresh my memory guys L20ET standard boost = ?psi. Standard boost + small cooler - 95RON unleaded + 50% more boost = :Bang: ? Cheers, machg

[BROCKZILA]

***from stagefumer11***

standard boost is 4psi with the over boost safety vavle running, with that blocked 6psi. I have a celica intercooler Frount mounted and have hit 20psi before, on a boost spike and didnt ping,

But i do have a HUGE fuel pump, ect

[machg]

Quick update: Found split in one of the hoses that attaches to the intake plenum. Fixed that, now she goes heaps better, I reckon the RB20DET turbo might be good for 5% more power than the standard turbo going by the seat of my pants.

machg

[stagefumer11]

Good to know, as im still in need of swaping mine over, but just got her back on the road after failing a wof inspection. dam brake hoses