My engine just came out of the oven.

Discuss the RB20, RB25 and RB26 series engines.
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240Z_Master
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DETurbine wrote:$70 into the welding and flange and about $60 to ceramic coating and anyone can do it. Cheap alternative of a clean external wastegated manifold.
Did you do this yourself? if anything I might just send mine out to you and have you take care of it.


Wykid 240
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great set-up man, keep us posted on the progress.

driftjunke - Is that a Holset on your car in the pic of your sig?

-Jeramy

Dramier
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Maybe it's just the picture angle, but is your exhaust manifold actually flipped over upside down?


DETurbine
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I did not do the fabrication on my manifold myself...I took it to a local shop out here that could weld cast iron and just had them do it. Was very cheap to do compared to an aftermarket manifold ($100 or so) and will work just as good.

The manifold is on there correctly, might just be the angle.

For my project so far, I kinda put it on a small hold, since winter is pretty much here there is really no reason to rush anything. Me and my friend are working on the transmission (replacing some syncro springs) and then am spending some more money on upgrades: custom intake manifold and a few other parts that should help me out quite a bit. I will update it once I get some decent progress.

jdms13rhd
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How much did you bore it out and did the shop use a deck plate on your block while on the line hone? Did you have to do any work to your cyl chambers or have plans to do so?

Very nice build man. Sounds like you will have a ton of fun once finished! Nice clean idea on that ex mani. Looks good. It sorta looks like your hood will come close to your wastegate but there is lots of room there also, prob will fit fine just the angle of the pic again. Cheers!

DETurbine
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I had them bore it 1/2mm over and they did use a deck plate. They have done an RB26 before so they were able to use that deck plate, I have heard that you can also use the L24, L26, and L28 deck plate mattering on your bore option.

Thanks for the comments....the wastegate will be perfectly fine, must just be the angle of the picture. It is actually lower then what the stock intake piping is that routes over the valve covers.

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JDMEnthused
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damn bro.. nice one. nice Wangan by the way :-p


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Nameless EJ6
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Nice buildup.. that's gonna make some good power.

I was just thinking about your rod choice. I am building my RB26 up, and I don't intend to keep the stock forged rods. I don't trust them, strengthened or not, I just don't feel inclined to take the risk.

Where exactly have you found information regarding stock rods being capable of 800+ hp? I don't see too many buildups on high powered RB26's utilizing stock rods that have been strengthened. I've only seen mild setups around 500hp with oem rods.

jdms13rhd
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My friends in AUSI run shot pien rods to 800hp everyday all day long. RB rods are fine with a bit of work. Even for 500hp you dont even need to do any work really! You will just be waisting your money unless your going extreamly crazy.

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Nameless EJ6
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Yea, I've heard people say this. That's a lot of power to trust OEM rods with. But ... not my buildup.

DETurbine
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Nameless EJ6 wrote:Nice buildup.. that's gonna make some good power.

I was just thinking about your rod choice. I am building my RB26 up, and I don't intend to keep the stock forged rods. I don't trust them, strengthened or not, I just don't feel inclined to take the risk.

Where exactly have you found information regarding stock rods being capable of 800+ hp? I don't see too many buildups on high powered RB26's utilizing stock rods that have been strengthened. I've only seen mild setups around 500hp with oem rods.
carlos rb26 powered tube frame nissan sentra ran a best of 7.787@176mph on gas

stock block stock connecting rods stock pistons stoct head gasket stock cylinder head stock cams stock cam gears stock timing belt stock crank stock intake manifold(slightly modified)

car has 945hp and 1117 ft lbs/tq.

there are plenty of people pushing the stock rods past the 800hp mark, so I feel pretty safe about it. Got the rods for $100, so to me it is a great upgrade.

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Nameless EJ6
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ah ok. I remember that.

How long do you think it'll last at that kind of output? I don't see how you can use that example to justify it though. From what I've gathered from reading other people's misfortunes on stock RB26's, there's a significant amount of people who would never use stock rods at that level. Somewhat of a concensus in the community among people who constantly build RB26's for high power ranges. This is just what I've felt after reading nonstop on the aussie forums..

I'm contemplating on keeping my stock rods. This is why I'm questioning your decision to keep them.. I might do it. Not perfectly set on a power figure yet, but it will be over 600.

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s13_rb25det
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just a question on the side... with strengthening the rods, do u mean nitrating them ? (not sure if this is the right term in english)

DETurbine
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Nameless EJ6 wrote:ah ok. I remember that.

How long do you think it'll last at that kind of output? I don't see how you can use that example to justify it though. From what I've gathered from reading other people's misfortunes on stock RB26's, there's a significant amount of people who would never use stock rods at that level. Somewhat of a concensus in the community among people who constantly build RB26's for high power ranges. This is just what I've felt after reading nonstop on the aussie forums..

I'm contemplating on keeping my stock rods. This is why I'm questioning your decision to keep them.. I might do it. Not perfectly set on a power figure yet, but it will be over 600.
I simply used that example to show how far they have been taken to. I have been researching theese motors for a while now and have talked with plenty of experianced skyline builders that have all told me that these rods are easily capable of handling 750-800HP with out taking that much strain. With 1000hp motor and still standing....I would imagine that a motor that is making any where from 50%-30% the power of the example I had stated can be a reliable item at that percentage. I myself am going to run these rods with the amount of power I plan on making.

RB25DET's are have been making 600-650hp on their stock rods, I have seen both of these rods hand and hand next to each other and have compared both....I will tell you now, the 26 rods are a lot thicker then the 25's and believe it when those builders/tuners have told me that they are capable of handing a reliable 750-800hp output.
Modified by DETurbine at 11:33 PM 11/25/2005

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Nameless EJ6
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Thanks. We'll see.. I may end up using them. Eagle has a pretty good deal on off the shelf rods for the 26 but I want to look into those more and see a few people using them. I'm one of those 'I'd rather be safe than sorry' type when it comes to building a motor. When I see that someone has had problems with their setup I try to read into it and find out exactly what the culprit was. Since I'm coming from a Honda background it's pretty hard to think of using OEM rods. =p

Thanks for your info.

s14 2510's
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I will have carrillo's in my 26 when it goes back together. I went with a new rod because I am hoping for 600whp and 10k redline. They are a beefy stock rod but for piece of mind I figured why not. I found brand new carrillo rods for $800. That beats the $1640 carrillo wanted for all 6 brand new from them when I caled.

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Nameless EJ6
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s14 2510’s wrote:I will have carrillo's in my 26 when it goes back together. I went with a new rod because I am hoping for 600whp and 10k redline. They are a beefy stock rod but for piece of mind I figured why not. I found brand new carrillo rods for $800. That beats the $1640 carrillo wanted for all 6 brand new from them when I caled.
mind sharing your source for those?

s14 2510's
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I found 4 brand new rods on ebay for 320 shipped and paid full price for the other two. I couldn't pass up that deal. I was going to go with them even if I had to pay full price. I just sold my stock rods with the arp bolts last week. I just dont want to pull my engine apart again once all the internal work is done. Do it right the first time not do it twice.

norikumiin
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wow... thats one clean RB

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Nameless EJ6
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s14 2510’s wrote:I found 4 brand new rods on ebay for 320 shipped and paid full price for the other two. I couldn't pass up that deal. I was going to go with them even if I had to pay full price. I just sold my stock rods with the arp bolts last week. I just dont want to pull my engine apart again once all the internal work is done. Do it right the first time not do it twice.
Hmmmm.. I'll keep my eye out.. maybe another deal like that will come up. thanks.

T4 RB25det
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DETurbine wrote:carlos rb26 powered tube frame nissan sentra ran a best of 7.787@176mph on gas

stock block stock connecting rods stock pistons stoct head gasket stock cylinder head stock cams stock cam gears stock timing belt stock crank stock intake manifold(slightly modified)

car has 945hp and 1117 ft lbs/tq.

there are plenty of people pushing the stock rods past the 800hp mark, so I feel pretty safe about it. Got the rods for $100, so to me it is a great upgrade.
this car?

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Evo_bill
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What is needed to "streghten" the rods?


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