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joe89

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Posts posted by joe89

  1. Hi there.

    Which will be better for street forged RB26? Botch turbo's are for 750[crank]hp - my power goal is 650-700hp on 93octane. GTX3076R will have 0.83 T3 twinscroll  and GTX3576R probably 0.61 T3 twinscroll. I hear GTX3576R spool better than -5. I need the fastest possible spool for that power level. Even i prefer 650hp over much lagged 700.

    It's true GTX gen 2 spool faster than gen 1?

    BTW how realistic is G25-660 with 650hp @ RB26?

     

     

  2. 21 hours ago, sneakey pete said:

    spool 79mm here.

    Did have issues with oil squirter clearances though unsure if it was specific to the 79mm or just a general issue, ordered kit through the engine builder so wasn't too involved but also was their responsibility to fix so that was a win.

     

    Apart from that its pretty damn good, though presumably will wear out faster than a 77.7 etc.

    Much better spool and response against stock 2.6?

  3. On 1/10/2019 at 2:16 AM, r32-25t said:

    Don’t bother with any kit that doesn’t have a full counter weighted crank. I’d personally use the nitto 2.8 kit

    Spool have billet full counter weighted crank ?

    On 1/10/2019 at 9:47 AM, Taha said:

    That power both would work  im making 750whp with stock crank id go spool 2.9 

    I think i also go with Spool :) 

  4. 1 hour ago, infomotive said:

    Have experience with the 62mm version fitted into a crappy ill-machined chinese .63 undivided housing.

    RB25DET neo stock engine was approx 400kww on 98 around 27psi.

    Forged bottom end and light porting became more det limited as comp crept up a tad and was approx 380kww on 98 then 470kww

    on E78 approx 32 psi. Awesome turbo. With decent housing would be even better. If you want more chuck the KTS upgrad wheel on.

    Have dyno sheets if wanted.

    Great information, what about spool ?

    U can post some dyno's :) 

  5. I get it :)

    I have 8375 .92 T4 divided in my forged Rb26 and HKS 264 cams on fuel pump ,and it's a bit laggy i running 21psi it's street fast car but it push hard after 4300. 

    My power goal with ~2.6l capacity is 420rwkw on fuel pump 98 till 8200 rpms, 8374 with hotside .92 is the best way for fast daily car with 420rwkw? The little problem is that hotside is huge and i have little space :( 

    One page ago i read 7670 is for max 375rwkw, with 1.05 hot side also? But also it's information the compressor is for 640hp so maybe with 1.05 it can make that close 400rwkw in 2.6l?

     

  6. 53 minutes ago, GT-R David said:

    It's not the gauge. It's an actual problem on the RB26.

    You will find information in here.

    What u mean? I trying to find some information but the most is problem with stock old oem pump or crank. I have crank in mint condition and new pump.

     

    Numbers are from external gauge, on internal it shows in half way 2-4b on 100% TPS till rev limit.

    It look like:

    full throttle: at 6000 3b, 6200 3.2b, 6500 - 2.6b, 6800 - 2.9b, 8000 - 2.2b and 8200 2.5b

    half or low throttle 4000 - 5.8b, 6000 6.2b

    hot idle 1000 - 1.7-1.9b

    cold engine 1000 7-8b

     

  7. Problem with oil pressure RB26.

    Hi,

    I have problem with oil pressure, engine is forged, dont take oil, no leaks and i have Nitto oil pump.

    When i start engine it have 7-8b on 1000rpm, when oil is hot i have 1.7-1.9b at 1000rpm, normal driving (3000-6000) 5-6b and when i go WOT [from 4000 to 8200] it drop to 2.2-2.8b and when i press light acceleration pedal it again hold  5-6b ... wtf?

    I have fresh Motul 300v 15w50 with K&N Oil filter.

  8. - What is the deck height? - stock

    - How thick is your head gasket? - 1.3mm

    - Are your pistons valve relieved? - yes

    - Have you decked the head? - no

     

    My rods are Bridgeway H-Beam and pistons CP.

    Yes i have baby cams :D They are step 1 :)

    Soo +6 should be fine, and  exhaust side -4/-5 too?

    In 2JZ my friend have intake +7 and exhaust -5 and have amazing spool and good top end. I wanna try to set my cams on the dyno and watch what's happening :) So i won't exceed +6 on the intake and what's with exhaust? Same, but in minus right?

     

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