Built Rb25/30 Power Figure ?

[GTSBoy]

Why the non-desire to run 25 psi? You're only going to be doing it to compensate for lack of mechanically obtained cylinder pressure, aiming to get to the same cylinder pressures that you wanted originally.

Just do it.

And contemplate ensmallening the cams. Doing so would be perfectly cromulent.

[BMYHOE]

^^^ +1 just run more boost mate it should come to life with 25psi..

with the set up you have id be running 30-35psi

[KiwiRS4T]

Posted 24 May 2012 - 11:05 PM "thanks bud ill have to book it in for another tune but i really dont feel like runing more than 25psi of boost i know the engine is built and all but i do want to keep the car for a bit longer and reliability is my no1"

Boost level is not a factor in engine life. Fear of high boost probably derives from the inability of the stock RB25DET turbo to run safely at much more than 11 - 12 psi and then it was the disintegration of the turbo ( and subsequent risk to the engine) that was the danger not the amount of boost per se. Max power is a factor in engine life and a bigger factor is a good tune.

[bokee]

ive made 396rwkw on a GT35 with .82 t3 rear housing.

396rwkw using e85???

what boost if i may know

[scotty nm35]

I saw this today and couldn't believe the power the SR was putting out with a GT35...

http://www.nissansilvia.com/forums/index.php?showtopic=519247

[bokee]

ill speak to my tuner and see to bump up to 25 psi, other thing i am considering is running E85 like BMYHOE

but will my fuel set up be enough for the E85?????

the only think that sort of draws me back from e85 is the octane level does change from season to season, the blend falls down to about 70% -30% in colder seasons

thoughts????

[bokee]

I saw this today and couldn't believe the power the SR was putting out with a GT35...

http://www.nissansil...howtopic=519247

you just made me more depressed lol

[scotty nm35]

ill speak to my tuner and see to bump up to 25 psi, other thing i am considering is running E85 like BMYHOE

but will my fuel set up be enough for the E85?????

the only think that sort of draws me back from e85 is the octane level does change from season to season, the blend falls down to about 70% -30% in colder seasons

thoughts????

Caltex hasn't changed much from 70% since it was introduced. I would run Caltex in winter for the easy cold starts and swap maps to United in summer if you want the e85.

[TiTAN]

I saw this today and couldn't believe the power the SR was putting out with a GT35...

http://www.nissansil...howtopic=519247

i find that power figure out of a standard GT35 hard to believe. i have only ever seen a couple make more than 420-430.

[scotty nm35]

I agree but who knows, JEM might be gurus at extracting teh powerz. It looks like a nice setup though...

[KiwiRS4T]

i find that power figure out of a standard GT35 hard to believe. i have only ever seen a couple make more than 420-430.

Is that the video for that car? 490kw = 14.98 quarter?

[FineLine]

ill speak to my tuner and see to bump up to 25 psi, other thing i am considering is running E85 like BMYHOE

but will my fuel set up be enough for the E85?????

the only think that sort of draws me back from e85 is the octane level does change from season to season, the blend falls down to about 70% -30% in colder seasons

thoughts????

Tune in winter when the pulp content is higher, Not that it makes any differece unless your tuner is taking your setup to the ragged edge,

My setup was done in winter then rechecked a couple of times in summer , no issues what soever.

Once you have used e85 you will never go back. The car runs so much better and engine temps are noticeably cooler. Good stuff!

[BMYHOE]

im running 24psi but spike back to 19 by redline..

im using clatex e flex fuel as above it hasnt changed its ethonal rating since i started using it - NOV2011

you may need to add anther 044 fuel pump possible dash 8 fuel supply line..

not sure on the 850cc injectors in using 1000cc's

[bokee]

im running 24psi but spike back to 19 by redline..

im using clatex e flex fuel as above it hasnt changed its ethonal rating since i started using it - NOV2011

you may need to add anther 044 fuel pump possible dash 8 fuel supply line..

not sure on the 850cc injectors in using 1000cc's

yeah i spoke to my tuner today he said at the same boost level (19psi) using e85 we should see somewhere within 350-360rwkw mark using the same fuel set up that i have now but bumping up the fuel pressure a bit. He highly recommended it.

if i do decide e85 and 25psi boost then my future intensions are

1000cc injectors like you said

earl braided fuel line

and another 044

thanks all on your inputs

[bokee]

well guys today was the sad day for me i found out y i only ended up mking 320rwkw,

ill start at the beginning

My friend had the car i have now, he has had the engine built by SMD workshops in sydney and had it tuned there too only a run in tune though.

i decided to buy the car of him and get it tuned there too, by the same guy using ems stinger ecu.

becuase i was buying the car i had to ask him what was done to the engine what pistons rods other things he used. fuel system etc

he said he had a 50mm greddy , external gate, greddy 850cc injectors, the whole ignition loom was changed blah blah blah, but little did he know that i have a bit of knowledge about cars unlike my unfortunate friend.

when i went through the whole car i figured it was starting funny, noise was a bit different which put a question mark in my head, i realised its got nismo 555cc injectors, cheap $110 ebay external gate, ignition loom is original as its a ser 2 loom. and all the other bulshit he said was not right,

i then ended up putting an external fuel set up surge tank 044 etc. nismo reg, with a real 850cc injectors, turbosmart 45mm pro gate etc etc

he couldnt get it tuned it was overboosting then it was just runing gate spring pressure boost and all other dramas including timing which he said it was ok but when i checked it the base timing it was 30 degrees in advance, and i said just leave it cos the car was going on a truck to adelaide the next day.

i ended up putting haltech plug in platinum series ecus and had it tuned everything finally fixed, new plugs etc etc everything done properly and ended up making only what i made.

now to cut the story short i realised my oil catch can was filling up with oil it overfilled and spilled everywhere on my driveway and along the LH headlight

i knew something was wrong so i did a compression test 1 cylinder was good 2nd, 3rd, 4th,it all went fine until i checked the cylinder pressure on 5th cylinder where i found only 60psi of cylinder pressure hmmm

an engine that has done less then 5000km has gone ka boom

suprisingly the car doesnt blow white smoke at all

well who is to blame tuner, builder, myself???? but ill not point a finger at anyone cos shit does happen although i wouldnt trust the guy from SMD workshop in sydney thats all he made me realise that he talks a lot of bull crap, anyway

the car still drives awesome with pleanty of power lol but i just know what i have to do,

head off to figure out what went wrong

other thing i found rear exhaust muffler the inside diameter is only 2.5inch

[DVS JEZ]

Fark knows what pistons are in it if the inj and gare where cheap. Its possibly a stock bottom end.

My guess is ring land failures

[bokee]

yeah well they are supoused to be Je pistons, have shotpeened rods, all acl bearings, cometic multilayer head gasket, arp bolts, etc etc but honesly i dont believe a thing he said, my friend did inspect the engine before he put it in and it all looked that its been properly built, but d question is, did he put that engine in it or a standard rb30 cos he did have few rb30 blocks there will find out the hard when i pull engine apart

[DVS JEZ]

If its stock and he gave u reciepts its fraud

[bokee]

If its stock and he gave u reciepts its fraud

yeah it was preety much like that lol am not really pissed off its just it came at the wrong time i was always wanting to build an rb30 that can withstand a real punishment. maybe this is my time, SPOOL has got a preety good stuff that he sells. but finding a trusted builder in adel is a bit hard u hear stories of other people and it just makes u wonder

thats y i do as much as i can, i am a car sparky but have a broad mechanical knowledge

[Mitcho_7]

yeah it was preety much like that lol am not really pissed off its just it came at the wrong time i was always wanting to build an rb30 that can withstand a real punishment. maybe this is my time, SPOOL has got a preety good stuff that he sells. but finding a trusted builder in adel is a bit hard u hear stories of other people and it just makes u wonder

thats y i do as much as i can, i am a car sparky but have a broad mechanical knowledge

Don't roll over that easy, it's the principle of the matter. If it's been done to you and the guy gets away with it, what's to say he won't do the same thing to someone else again later?

I say confront the bloke about it, but don't start accusing him straight up. See what he says when you question him about what you have found.

Edited June 2, 2012 by Mitcho_7