Most Power Ever On A Stock Rb Crank

[jimefam]

You mean these two, correct?

Yes thanks.

[N1GTR]

Ok, here's some clarification;

The top one is a GT crank (Not to be confused with N1), runs a 77.7mm stroke (eg 2.8L), as you can see its a serious bit of gear.

The bottom is a standard GTR crank, 73.7mm stroke, used in all GTR road cars that are 2.6L (so all normal GTR's, V Specs, V Spec2's, NUR and N1's). Eventhough that particular one is being sold as N1 (and a lot of shops do the same thing here, maybe it boosts sales?!) its just a stock GTR crank. Part number from FAST for an N1 engine lists it as 12200-05U03, part number for a stock standard RB26 in FAST also shows the exact same crank as 12200-05U03.

FYI the majority (if not all) N1 parts have "24U" in the code in place of "05U". Lastly, the GT crank is from Nismo not Nissan.

Good luck with the build.

[Dobz]

Fair yank of the crank!

A stock crank might be able to handle a fair bit of power but it's like rolling the dice when you push it above and beyond what it was intended to do, some might hold together some might fall apart.

[Branelly]

Jesus, hope theres some sort of build thread for this motor. Sounds like its going to be a monster.

[jimefam]

Ok, here's some clarification;

The top one is a GT crank (Not to be confused with N1), runs a 77.7mm stroke (eg 2.8L), as you can see its a serious bit of gear.

The bottom is a standard GTR crank, 73.7mm stroke, used in all GTR road cars that are 2.6L (so all normal GTR's, V Specs, V Spec2's, NUR and N1's). Eventhough that particular one is being sold as N1 (and a lot of shops do the same thing here, maybe it boosts sales?!) its just a stock GTR crank. Part number from FAST for an N1 engine lists it as 12200-05U03, part number for a stock standard RB26 in FAST also shows the exact same crank as 12200-05U03.

FYI the majority (if not all) N1 parts have "24U" in the code in place of "05U". Lastly, the GT crank is from Nismo not Nissan.

Good luck with the build.

Thanks for the clarification. I was aware that the GT crank was stroked but I had assumed that it was created for more than adding .2L and thought perhaps there was some weakness but from what I've heard back that's not the case so thanks. I did think the N1 was different from a regular GTR crank, very sneaky of them to market it that way.

Fair yank of the crank!

A stock crank might be able to handle a fair bit of power but it's like rolling the dice when you push it above and beyond what it was intended to do, some might hold together some might fall apart.

I would if there was a replacement 25 crank or if it was clear the stock one has no chance, it's not that I'm cheapening out or anything but i'd like to see what can be had out of an RB25 as I see alot of people here(where both have to be imported) ditch their RB25's and pay sometimes several thousands more for a 26 when IMO that money could have been better spent building the 25 and making it stronger than a stock 26.

Jesus, hope theres some sort of build thread for this motor. Sounds like its going to be a monster.

Yes there is http://www.gtr.co.uk/forum/155003-drag-rb25-s13.html

[jangles]

Serious parts list

Edited August 22, 2011 by jangles

[NYTSKY]

Nice build.

[Legionnaire]

Ok, here's some clarification;

The top one is a GT crank (Not to be confused with N1), runs a 77.7mm stroke (eg 2.8L), as you can see its a serious bit of gear.

The bottom is a standard GTR crank, 73.7mm stroke, used in all GTR road cars that are 2.6L (so all normal GTR's, V Specs, V Spec2's, NUR and N1's). Eventhough that particular one is being sold as N1 (and a lot of shops do the same thing here, maybe it boosts sales?!) its just a stock GTR crank. Part number from FAST for an N1 engine lists it as 12200-05U03, part number for a stock standard RB26 in FAST also shows the exact same crank as 12200-05U03.

FYI the majority (if not all) N1 parts have "24U" in the code in place of "05U". Lastly, the GT crank is from Nismo not Nissan.

Good luck with the build.

Does that GT crank have anything to do with Reimax crank, p/n 12200-RRR4A? Reimax one also has 77.7mm stroke

[jimefam]

Does that GT crank have anything to do with Reimax crank, p/n 12200-RRR4A? Reimax one also has 77.7mm stroke

Yeah I was wondering the same thing. Also is this the same crank that's in the Z-tune?

[Force Fed]

Z-Tune uses a GT500 block, aswell as the GT Crank, rods and pistons.

So yes, it is.

Also, isnt Godzilla's (Mark) R32 GTR running a standard crank?

[jimefam]

Z-Tune uses a GT500 block, aswell as the GT Crank, rods and pistons.

So yes, it is.

Also, isnt Godzilla's (Mark) R32 GTR running a standard crank?

Not sure as I don't know who that is. Googled Godzilla r32 GTR but as you can imagine that brought up alot of unrelated results.

[Force Fed]

Not sure as I don't know who that is. Googled Godzilla r32 GTR but as you can imagine that brought up alot of unrelated results.

Forgot to add in "motorsport"

• 1989 R32 GTR
• ~1200 engine hp
• Godzilla Motorsport spec R32 GTR block retaining 2.6L capacity
• Godzilla Motorsport spec standard crank
• ACL pistons
• Crower rods
• ACL Race Series bearings
• Godzilla Motorsport spec external oil pump
• ATI balancer
• Godzilla Motorsport spec ported and polished head
• Tomei cams
• Tomei cam gears
• Tomei valve springs
• Oversized valves
• Motec M800 ECU
• Magnafuel fuel pressure regulator
• 10L fuel cell
• ARE front mount intercooler
• Hypertune intake plenum with 100mm throttle body
• GCG custom turbo
• 4" exhaust exiting behind the front wheel
• Liberty clutchless 5 speed gearbox
• NPC twin plate clutch
• Koni Suspension
• Godzilla Motorsport custom drag spec rear wing
• Godzilla Motorsport spec headlight intake
• ANDRA spec rollcage
• Fixed back race seat
• Lexan windows front and rear (oem side glass)

http://www.godzillamotorsport.com/content.php?cid=1

[Sub Boy32]

Surely RIPS FED would be one of the most powerful....Rev's to 10,000rmp, and makes about 1200-1400hp? Standard RB30 crank

[Beer Baron]

Really? Just the one crank? Well I must be mistaken then but I was basing my info off of nissans own info. On this page they show two cranks:

http://www.nissanparts.cc/catalog/?section=958#3232

Oh and it was one car that made 1350hp and another that revved to 11,000 not both. Although I didn't ask what the one that made 1350hp revved to. Do all the engines he makes stay in your state? Otherwise I can't see where being geographically close to him would help you know all the engines he's made.

I'm sorry but 'nissan's own info' my hairy butt. that is an american re-seller website flogging nissan parts. not a nissan website offering information on parts. big difference. they are also selling N1 rods, maybe buy some to go with the N1 crank. I'm sorry but given their limited dealings with RBs in general I wouldn't trust them to tell me the difference between an RB25 crank and an RB26 crank. There are people here who would have personally owned more GTRs than all those in north america put together.

no you're right not all engines paul 'builds' stay in NSW but i still think most people would have heard of the 1350hp engine or this almost motorbike like 11,000rpm engine he built... honestly I'm more impressed that there's 2 now and I am genuinely interested to see them that's all. I love a big power RB as much as the next bloke. I'd love to see some vids of one running at 11,000rpm.

[Beer Baron]

oh and yes I would think godzilla and RIPS would have to be the 2 guys taking standard cranks the furthest in these parts. they have each done 1000hp+ but of course they are not just bought off the shelf and dropped in, they are prepared/balanced to suit.

[Marlin]

Is that froth from your mouth Baron?

In all seriousness though, you list a Trust brand oil cooler..... looking through your pics quickly, I have grave doubts that what you have there is in fact a Trust..... It looks to me more likely that someone has been making some Trust badges.

Mate, that oil cooler is about as China as I've seen.

[Marlin]

FWIW, i was kind of involved with one of the quicker GTR drag cars here several years ago when 9's were fast, and it used a std crank.

At one point we returned 3 brand new cranks to Nissan's parts department because we crack tested them all prior to installing them. Each one of those brand new factory cranks had a flaw or crack. Not a problem at 500hp, but certain to be a serious issue over 1,000.

[Force Fed]

that block looks like it's seen some weather..........

Question... Pretty sure i already know the answer

http://www.junauto.co.jp/products/crankshaft/index.html?en

Is that the stock stroke crank or the same as they use in the 2.7lt stroker?

[jimefam]

Is that froth from your mouth Baron?

In all seriousness though, you list a Trust brand oil cooler..... looking through your pics quickly, I have grave doubts that what you have there is in fact a Trust..... It looks to me more likely that someone has been making some Trust badges.

Mate, that oil cooler is about as China as I've seen.

LOL no the one pictured is not the Trust oil cooler thats an Earl's cooler that I had bought originally to use with the dry sump setup but then I needed a trans cooler as well so I decided to use the Earls for that and get the larger capacity Trust one for the engine. I've never seen another one but I bought it from a reputable company here, perhaps this one is a Trust one?Although the Trust ones are probably made in china too! Here's some pictures so that you may help verify its authenticity:

[Marlin]

Much more authentic lol

Although, I will say, for this level of build I would personally opt for a PWR radiator with built in engine oil cooler. It's much neater to plumb, weighs less, cools FAR more efficiently, warms the oil better, and is neater and easier to work around. Did I mention it's better?