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#1
11-12-2003, 11:05 PM
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RB26DETT vs. RB25DET
Hello all,
I have a quick question for you all, what are the compression ratio's of the RB26DETT, and the RB25DET? I know the heads are diffrent, but are the internals diffrent? Crank, rods, bearings water/oil pump etc? I am looking to swap a blow stocker 240sx motor, and I am trying to decide which engine to go for, the slight diffrence in cost is no concern. Does anyone have a source that will sell RB26DETT motors with the RWD tranny? Also, and finally, If I decide to go with the RB25DET, I would like to do the turbo upgrade at the same time. Is there a good place to get a tubular manifold? What Turbo should I use? (I was thinking a T66, T78 )My goal is about 500 RWHP on pump gas with ethonal 50/50 injection. Can that engine handle that much power on stock internals? Best fuel solution? Any dyno's out there of RB series powered 240's? 
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#2
11-13-2003, 07:30 AM
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Re: RB26DETT vs. RB25DET
Rb26dett Vs. Rb25det
Rb26: Fully Counter-weighted Crank, High Volume Oil Pump, Stronger Forged Internals, High Volume Water Pump, Solid Lifter Cams. Rb25: Forged Internals, Hydro Lifter Cams (low Rev Limit) The Rb25 Could Push A T88 To 30psi. But The Internals Could Handle About 600-800hp Stock. The Rb26 Has Held 800hp+ Stock And Can Push The Same Size Turbo.
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#4
11-13-2003, 10:14 AM
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Re: RB26DETT vs. RB25DET
Rb25: 9.5 To 1
Rb26: Its Either 8.5 To 1 Or 9 To 1 (can't Remember)
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#5
11-13-2003, 10:26 AM
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Re: RB26DETT vs. RB25DET
It Is 8.5 To 1.
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#6
11-13-2003, 10:27 AM
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Re: RB26DETT vs. RB25DET
WWW.MEGGALA.COM - THIS GUY HAS ALOT OF INFO ON THE RBS.
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#7
11-13-2003, 03:14 PM
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Re: Re: RB26DETT vs. RB25DET
Quote:
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#8
11-13-2003, 03:32 PM
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Re: RB26DETT vs. RB25DET
Hey Why Hide The Knowledge? Hope It Helps You Out. And If You Want Personal Opinion.... Get The Rb25 And Build The Internals Up And You Will Still Be Cheaper Than The Rb26 But Stronger.
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#9
11-13-2003, 08:49 PM
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Re: Re: RB26DETT vs. RB25DET
Quote:
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#10
11-14-2003, 07:07 AM
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Re: RB26DETT vs. RB25DET
No I Never Twin Charged The Car, BUT I Saw The Power Of The Rb Motors And Harnessed That. I'm Going To HOPEFULLY Be Building An Rb33 Here Soon If Everything In My Life Falls Back Into Place.
The Reason I Have That Attitude Is Because I Remember When I Was New To The Forums And I Knew Alot But Everyone Was Like "look At Your Post Count, Haha!" And All I Wanted To Do Was Learn More, I Was Then Subjected To The Infamous Term "search!". I Told Myself I Would Help People That I Can Because Thats What These Communities Are For. Without Mutual Help, Knowledge, And Respect These Forums Would Go No Where Fast. Anyway, Yeah I've Been On Here Before But Left To Nico Because They Have Alot More Topics Geared Towards My End Of The 240sx Spectrum, I Returned To Spread The Knowledge Of The Rb Swaps And Try And Help Inform The Misinformed.
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#11
11-14-2003, 07:27 AM
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The only thing I ask of you musicsurfman is to quit using caps at the beginning of every word....it makes you look like you're a 12 year old noob...sorry, but it does...caps missplaced always look bad...all caps, bad caps...no caps would be better than what you do...
Annoying to read and it must take quit a bit of time since you can't type at 60wpm with all that shift usage...
__________________
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#12
11-14-2003, 07:44 AM
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Re: RB26DETT vs. RB25DET
I Can't, At Work My Caps Is Locked And I Can't Change It. This Forum Converts All Caps To What You See. If I Could I Would, And I'm Sorry. If You Check Nico, Az240sx, Skylinesdownunder I Do The Same There And I Have A Signature Apologizing For It Also. When I Get Time I'll Do The Same Here. Once Again I'm Sorry For Any Strains Or Discomfort Caused By My Posts, I Am Expecting A New Keybaord Though Because I Had A Job Change.
Once Again Sorry, Christian
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#13
11-14-2003, 08:29 AM
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No problem...I assumed you were doing it on purpose...didn't realize that with all the recent forum changes that it also changed that annoyance. Anyhow, I hope you get the new keyboard soon :P
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#14
11-14-2003, 08:35 AM
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Re: RB26DETT vs. RB25DET
Lol I've Been Waiting For A Month And A Half So Far. Here Let Me Put It In Perspective For You..... I Just Got The Phone I Ordered 4 Months Ago, Yesterday.
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#15
12-15-2003, 09:00 AM
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Re: RB26DETT vs. RB25DET
You guys seem to have a good knowledge of the GTRs... Do you know reputable people to rebuild my R.33s engine to spec? The reason I ask is I want to bring mine back to the US, but the engine is a little worn, and I don't know if it would pass the emissions test after rebuilt...
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