rb20 turbo upgrade

[Sully]

Hey guys im new on this site and just bought my first Skyline. The car is a 1991 gts with a rb20det motor. i have been having problems with a exhaust manifold leak and just changed the gaskets for it about a month ago. i now have another leak somewheres on the manifold so im going to go with a set of after market headers and i also want to upgrade the stock turbo as well. does anyone have any advice on what a good set of headers and a good turbo would be?
thanks.

[Skym]

6Boost exhaust manifold -

http://www.6boost.com/

Or Sinco Customs exhaust manifold -

http://www.sincocustoms.co.nz/products/Nissan%20RB20-25-30%20Top%20Mount/16

Both of them shouldn't crack. Turbo size, don't know your hp goal. 300hp?, 400hp?, 500hp?

With Garrett turbo's probably would be a GT2871R (ballbearing) turbo -

http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-022&Category_Code=GRT

That's with T3 exhaust housing, swinggate assembly, etc.

Stock mid mount exhaust manifold turbo options :-

Hybrid stock turbo is another option (if find and use another stock exhaust manifold) -

http://www.cherryturbos.com/Hybrids.html

Or could fit a Kinugawa TD06 Turbo (from Japan), which if is anything like Trust TD06 20G turbo, it should be good for over 400hp at engine (non ballbearing) -

http://www.ebay.com/itm/Kinugawa-Turbocharger-NISSAN-RB20DET-RB25DET-2-4-Cover-T3-V-Band-TD06H-60-1-8-/110863424270?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D1281670240769519209%26pid%3D100015%26prg%3D1006%26rk%3D1%26

Trust TD06 20G turbo kit (top mounted exhaust manifold) on stock RB20DET with fuel mods, ECU, Z32 AFM + plug, FMIC, etc -

http://www.youtube.com/watch?v=LV-bcbzwrpg

Then there's supporting mods like Nistune for stock ECU, 550cc DeatschWerks injectors, DeatschWerks fuelpump, DeatschWerks Fuelpump hardwire kit, Z32 AFM, Z32 AFM plug (Tomei sell the plug), electronic boost controller, 1.2mm 80.5mm Tomei metal headgasket (or similar), Nissan repair gasket kit, etc, upgraded clutch, NGK PFR6A or PFR7A sparkplugs (let tuner choose sparkplug heatrange) with 0.8mm gap, engine oilcooler, etc.

[92GTSTproject]

and if you cant afford all that gasket match your stock mani buy an rb 25 turbo and an electronic boost controller...wont make crazy power but its a definite upgrade

[subline]

If you seek power i recomend that you looking for holset hx35super #12. But it's need "custom" manifold with external wastegate.
Then i also recomend that you will swap injectors too (exm:Gtr 444cc cheap. I have in my rb20 siemens-deka's 630cc) and fuelbump (exm:wallbro 255lh) that will do about +350whp. Oh yeah you also need upgrade your ecu and maf sensor (z32maf) rb20maf will working in 320whp too, but i still recomend that you upgrade your maf :P

Sorry for bad english

[Skym]

Sorry for bad english

Hey, don't worry about it. With some people English is a second language around here (I think some speak French as well). I and probably many others can understand what fuel bump (fuel pump) means when mention wallbro (Walbro) next to it.

Not many I know use Siemens-Deka's injectors, any benefits over Deatchwerks (Bosch injectors)???

[subline]

I don't know any facts about Deatchwerks.. but tha't iknow they also customized stock injectors.. bosch is also good.. there are no benefits or it's depents how big injectors are
So there is no bad choices. rb26 injectors in hcr is good choice too, but they are used injector. I preffer new injectors.
oh lol fuel bump what a failure

Hey, don't worry about it. With some people English is a second language around here (I think some speak French as well). I and probably many others can understand what fuel bump (fuel pump) means when mention wallbro (Walbro) next to it.

Not many I know use Siemens-Deka's injectors, any benefits over Deatchwerks (Bosch injectors)???

[Voodoo_ChildR32]

I ran an RB20 with a walbro pump, fuel regulator, GTR injectors, and an RB25 turbo on my first GTS. Was a good reliable setup, running 12psi, pulled strong.


Sent from my iPhone using Tapatalk

[subline]

yeah it's verry easy get power for cheap.. but stock turbos max boost is 12psi you can use more but it will break turbo

[Skym]

I don't know any facts about Deatchwerks.. but tha't iknow they also customized stock injectors.. bosch is also good.. there are no benefits or it's depents how big injectors are
So there is no bad choices. rb26 injectors in hcr is good choice too, but they are used injector. I preffer new injectors.

I thought spray pattern might be better for smoother idle, etc (similar to ID injectors which are popular with engines running on ethanol fuel).

oh lol fuel bump what a failure

I thought you were joking / having fun when wrote fuel bump. Good excuse is must have been around ladies talking about baby bumps.

Also I spelt Deatschwerks (forgot the "s") wrong.

but stock turbos max boost is 12psi you can use more but it will break turbo

Depends on how out of balance turbo is (requires specialist measuring equipment, as there is some movement due to clearancing for oil thickness). Turbo could fail at 12psi, 14psi, etc. Higher psi = higher turbo rpm and turbo gets more off balance if it's out of balance.

That's usually what causes exhaust wheel failure, as exhaust wheel hits exhaust housing and shatters. Some pieces / ceramic dust go back into engine if backing off throttle (I think gets inbetween piston rings, bores and scores the bores) when exhaust wheel fails or ends up in middle of exhaust under full throttle. High exhaust temps is said to be the other, which breaks down glue holding on ceramic exhaust wheel to shaft, but haven't seen that type of failure.

Usually cheaper turbo's are not balanced properly, use cheaper materials, parts not machined correctly (machines not calibrated properly before machining parts), sometimes the design of bearings, etc and is why they fail earlier. Sometimes it's as simple as not prelubing turbo before engine startup.

[subline]

That's is also true. But still ceramic exhaust wheel is the weakest links when you raise boost in stock turbos
I'v been used Dsr430 (maker some new zeland company ) turbo it's fully bolt on turbo. But now it's broken and i will swap engines rb20 to rb25 + holset hx40 super :P

[Skym]

That's true when using launch control (steel exhaust wheel is better).

My cars turbo failed on compressor side with oil seal, compressor wheel touching housing (common failure with stock turbo). Suspect it was high oiltemp related (RB20DET doesn't have an engine oilcooler or stock heat exchanger as found on RB25, RB26, other import engines).

I think DSR turbo's are Chinese made but sold through DSR.

Next mod could be Nissan RB30 bottomend + RB25DET head. Get more torque, hp throughout powerband compared to RB26.

RB30 bottomend (from R31 Skyline, VL? Commodore, etc) -

http://www.ripsltd.com/products.html

[subline]

I know there is no oilcooler in hcr32.. Btw is there in canada a lot of r31 and commandores?
I know something about rb30. Bottom it's from n/a with one cam and it will be mixed with top of rb25 or rb26 it's familiary for me too.
No Dsr is not chines made. It's made in nz but it's based some old 3/4 garett's
One more thing, is there any topic where diffrent user's can post pic's of theyr cars?

That's true when using launch control (steel exhaust wheel is better).

My cars turbo failed on compressor side with oil seal, compressor wheel touching housing (common failure with stock turbo). Suspect it was high oiltemp related (RB20DET doesn't have an engine oilcooler or stock heat exchanger as found on RB25, RB26, other import engines).

I think DSR turbo's are Chinese made but sold through DSR.

Next mod could be Nissan RB30 bottomend + RB25DET head. Get more torque, hp throughout powerband compared to RB26.

RB30 bottomend (from R31 Skyline, VL? Commodore, etc) -

http://www.ripsltd.com/products.html