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Looks like a fun project!
[QLD] RB25 244 Brisbane - $6k
Look out, all that work and it makes similar power to a b230ft with an aftermarket computer.
I was wondering about that. 168 seemed low for a turbo, especially on 12psi. Is that just how rb25s are?Vee_Que;129295 wroteLook out, all that work and it makes similar power to a b230ft with an aftermarket computer.
The theory is they have the ability for massive power, once you change everything on them.
It's been for sale for at least a year.
Geminis though
Your theory is wrong.Vee_Que;129298 wroteThe theory is they have the ability for massive power, once you change everything on them.
I am here to defend the 25's sterling reputation.
Power is down, could be for a few reasons. (Most likely the tune is too conservative)
But, with a completely standard 25 and only boost around 10psi will make 190-210rwkw.
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Then why is this one so down? Going to a non conservative tune is great for dyno days, but not track days.
They are overrated. An sr20 with a good tune makes similar power as well. As does the b230 with a better turbo than stock and similar engine management, and it's not an overpriced fanboi Nissan motor.
They are overrated. An sr20 with a good tune makes similar power as well. As does the b230 with a better turbo than stock and similar engine management, and it's not an overpriced fanboi Nissan motor.
Incorrect again. A conservative tune isn’t good for anything. I mentioned the tune above being the most possible reason for the lack of power, the reasoning behind this can be many issues with the software or hardware being used.Vee_Que;129353 wroteThen why is this one so down? Going to a non conservative tune is great for dyno days, but not track days.
They are overrated. An sr20 with a good tune makes similar power as well. As does the b230 with a better turbo than stock and similar engine management, and it's not an overpriced fanboi Nissan motor.
Again incorrect on the sr20. You won’t be making the same power mod for mod against a 25.
Atleast this guy seems honest. The last guy cooked the motor
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Just re read the FS Thread @Vee_Que .
The china coilpacks would be one of the main problems, hence the hesitation issue, and adds to my previous statement of a hardware and tuning issue.
More than likely they've added more dwell which would only make the problem worse once the engine is hot, and will eventually melt those packs. But while cold, would help with the hesitation issue. Plugs are almost irrelevant at this point, as you start to change the gap you find it will work against the packs. Probably why the problem was never fixed.
What power does a b230t make with only added boost?
VQ - "My own 740t with a big rod b230ft ported 90+ 16t and 3" exhaust with an auto makes 140rwkws and runs 16psi"
So with an engine rebuild, ported head, bigger turbo, and exhaust and misc mods you can make 140kw at 16psi?
Cool.
The china coilpacks would be one of the main problems, hence the hesitation issue, and adds to my previous statement of a hardware and tuning issue.
More than likely they've added more dwell which would only make the problem worse once the engine is hot, and will eventually melt those packs. But while cold, would help with the hesitation issue. Plugs are almost irrelevant at this point, as you start to change the gap you find it will work against the packs. Probably why the problem was never fixed.
What power does a b230t make with only added boost?
VQ - "My own 740t with a big rod b230ft ported 90+ 16t and 3" exhaust with an auto makes 140rwkws and runs 16psi"
So with an engine rebuild, ported head, bigger turbo, and exhaust and misc mods you can make 140kw at 16psi?
Cool.
Rb25 sounds much better than a B230 or SR20. Thats a fact.
Nope, engine is untouched internally, no porting on the head, just on the stock exhaust manifold plus autos lose power. And it makes more power now with a good auto and actually having spent time making it happier running. It's not running an aftermarket ecu. Which was my main point.
So basically, taken out of context and incorrect.
Once again, over rated, Rbs in general, overpriced with fanbois who jump on forums of which they don't own cars of to defend shitty engines.
If this was a 2jz or 1j, it would go well.
So basically, taken out of context and incorrect.
Once again, over rated, Rbs in general, overpriced with fanbois who jump on forums of which they don't own cars of to defend shitty engines.
If this was a 2jz or 1j, it would go well.
It’s an engine. Not a dick.
Don’t take it so hard.
Don’t take it so hard.
I saw this car IRL at the last WTAC. It looks pretty decent and for ~4.5k it would be a bundle of fun. Also the owner, Seth, seems like a decent bloke who like a few of us here has a few too many projects on the go and is just looking to downsize. There is no need for all this bashing of the car to make it sound like its a total POS. An RB25 240 would go harder and be more reliable that 80% of the cars here.
Dont hate on things because they are popular. An RB is much smoother and easier to live with over a B230. It also has a very healthy aftermarket. B230s and redblocks are cool in their own right but an RB is just that much better.
Dont hate on things because they are popular. An RB is much smoother and easier to live with over a B230. It also has a very healthy aftermarket. B230s and redblocks are cool in their own right but an RB is just that much better.
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Plenty of parts available for a b230, it's just they aren't as common because they weren't all imported in a flurry fifteen years ago.
There's multiple factors on why Rbs are not as good as a 1j/2j, most of which revolve around the fact now there is a huge premium for a motor even over a 1/2j, which I've seen plenty of complete 1jgte motors for $1000, I never see good rb20/25s for under 2k, usually with no assesories. They have oiling issues, the internals are not as durable as the Toyota, they are not as good a rod ratio. And most people who did use them, blow them up and go to a 2j or ls motor for competition use. The only good box to use is the vg30 box with a custom adaptor at huge expense as well. The Toyotas have multiple options that don't cost as much. Of course you can use an rb25 box, but they are also worth drug money.
Unless of course it's on a GT-R. Which is all well and good, but every one ends up with a forged built bottom end to make 500hp at the engine. Which a 2j does with stock internals.
B230s are not perfect, but they don't have a skyline/gtr tax, and they are the standard motor for the cars in question. Which is the original point, the guy who built it, spent a lot of money to buy the overpriced motor, then broke it, (how? They all seem to break) and sold it with a broken motor. This guy chucks another motor in and it still only makes what a
B230 with a t3/4 and an aftermarket computer would make. With no other changes.
Unsure about the reliable bit Ryan, once again, this car is on its second converted motor.
Ah Tom, you're the one who came in here. And then tried to discredit me, so your response is pathetic and overused by people like you.
There's multiple factors on why Rbs are not as good as a 1j/2j, most of which revolve around the fact now there is a huge premium for a motor even over a 1/2j, which I've seen plenty of complete 1jgte motors for $1000, I never see good rb20/25s for under 2k, usually with no assesories. They have oiling issues, the internals are not as durable as the Toyota, they are not as good a rod ratio. And most people who did use them, blow them up and go to a 2j or ls motor for competition use. The only good box to use is the vg30 box with a custom adaptor at huge expense as well. The Toyotas have multiple options that don't cost as much. Of course you can use an rb25 box, but they are also worth drug money.
Unless of course it's on a GT-R. Which is all well and good, but every one ends up with a forged built bottom end to make 500hp at the engine. Which a 2j does with stock internals.
B230s are not perfect, but they don't have a skyline/gtr tax, and they are the standard motor for the cars in question. Which is the original point, the guy who built it, spent a lot of money to buy the overpriced motor, then broke it, (how? They all seem to break) and sold it with a broken motor. This guy chucks another motor in and it still only makes what a
B230 with a t3/4 and an aftermarket computer would make. With no other changes.
Unsure about the reliable bit Ryan, once again, this car is on its second converted motor.
Ah Tom, you're the one who came in here. And then tried to discredit me, so your response is pathetic and overused by people like you.
I’m only here for a laugh because you’re so opinionated. Even on people personal builds, if it doesn’t suit your taste or you’ve never heard of someone doing it, you get upset.
Std 25 will do 400hp everyday. If you want 600+ on std bottom end you use the 30de. Again power is relative to how you drive it. Don’t even get me started on how wrong you are on the gearboxes...
What other unrelated engine would you like to compare a 25yr old rb to?
Std 25 will do 400hp everyday. If you want 600+ on std bottom end you use the 30de. Again power is relative to how you drive it. Don’t even get me started on how wrong you are on the gearboxes...
What other unrelated engine would you like to compare a 25yr old rb to?
Just because it did a rod bearing that doesnt make the motor unreliable. Maybe it had an oil starvation issue from going around corners too hard at too high RPM. Maybe it was run low on oil because of whatever. Or maybe because its a mechanical object it just decided to break. We all know the 2J is a competent engine. Thats well known. It doesnt mean the RB is a total piece of shit.Vee_Que;129431 wrotePlenty of parts available for a b230, it's just they aren't as common because they weren't all imported in a flurry fifteen years ago.
There's multiple factors on why Rbs are not as good as a 1j/2j, most of which revolve around the fact now there is a huge premium for a motor even over a 1/2j, which I've seen plenty of complete 1jgte motors for $1000, I never see good rb20/25s for under 2k, usually with no assesories. They have oiling issues, the internals are not as durable as the Toyota, they are not as good a rod ratio. And most people who did use them, blow them up and go to a 2j or ls motor for competition use. The only good box to use is the vg30 box with a custom adaptor at huge expense as well. The Toyotas have multiple options that don't cost as much. Of course you can use an rb25 box, but they are also worth drug money.
Unless of course it's on a GT-R. Which is all well and good, but every one ends up with a forged built bottom end to make 500hp at the engine. Which a 2j does with stock internals.
B230s are not perfect, but they don't have a skyline/gtr tax, and they are the standard motor for the cars in question. Which is the original point, the guy who built it, spent a lot of money to buy the overpriced motor, then broke it, (how? They all seem to break) and sold it with a broken motor. This guy chucks another motor in and it still only makes what a
B230 with a t3/4 and an aftermarket computer would make. With no other changes.
Unsure about the reliable bit Ryan, once again, this car is on its second converted motor.
Ah Tom, you're the one who came in here. And then tried to discredit me, so your response is pathetic and overused by people like you.
Hell I have a B6284 sitting on my garage floor that has far less potential over a LS or 2J that will be going into my 240. Sometimes people build things because they like them. From a performance standpoint me putting a B6284 into my 240 is a stupid move because it will probably only really make 300hp. An LS will do that all day everyday without the need for a turbo or any real special fab. But I want the B6284 in the same way this guy wanted the RB. Its not the end of the world for people to build things they like.
@Vee_Que go and do something more constructive with your time, pretty sure Tom has 100% more running RBs in his life than you do.
OK. Prove it, because I have looked multiple times and any time people have a more then stock hp Rb, they have forged internals. Every single one. Especially rb30s, none are a untouched bottom end that lasts more than three passes. So links or you're flat out bullshiting.Trex;129435 wroteI’m only here for a laugh because you’re so opinionated. Even on people personal builds, if it doesn’t suit your taste or you’ve never heard of someone doing it, you get upset.
Std 25 will do 400hp everyday. If you want 600+ on std bottom end you use the 30de. Again power is relative to how you drive it. Don’t even get me started on how wrong you are on the gearboxes...
What other unrelated engine would you like to compare a 25yr old rb to?
How is a 1j unrelated? Or a b230? Both from the era.
Go on about the gearboxes, once again, links to cheap rb25 boxes as well.