Have you changed your own Turbos?

[Spency1983]

how was the difference between the -5s -10s what boost and hp you got?

big difference between stock and -5s?

am planning to upgrade soon looking for around 800hp but torn between big single or twins any advice would be great

[Monster GT-R]

The -10's were good but the response wasn't what I wanted. The alcohol injection I have now with some water mixed in (30% by mass) would have helped but really the displacement of the RB26 isn't quite enough for my liking. Now dash 10's on a RIP`S RB 30 would be more like it for me. I have had Dino Queens and I can`t say they are that enjoyable to drive. I used to race motorcycles when I was young and that bike was all top end and it was very similar to the Dino Queens, everything is at the end and everything before it was anxiety waiting for the boost. That makes for a ride that is more work than pleasure to drive. Dash 5`s can still get 600 or more to the wheels. Add a good 2 or 3 stage Methanol injection system and mix it to 20-35% by mass with water and even more fun can be had sooner in the rev`s.
The difference between stock and dash 5`s is big after 2700 rpm. I noticed that stock turbos on my car would start boost around 2200 -2300, dash 5`s around 2600-2700 rpm. Others may differ but that is what I remember. I can get the dash 5`s to come on as early when I set the methanol injection system to start spraying around 1500-1600 rpm. The turbo`s spool up sooner and as the sprayer on my car is 3 staged the car keeps pulling like an elephant right to redline (8500). If I didn`t put this stopping point in I`m sure the engine would never stop pulling until it let go. I love this engine. I`ve never seen an engine where the HP doesn't drop off, except this one.
I can`t say that I have driven a GT-R with a big single but from the Dino sheets I have seen, I would take twins over a big single for a car that you're going to drive regularly. If your building a track car where the rev`s are going to be closely managed the whole time the engine is running then go single cause in my opinion, it`s all work to drive it daily. I frequently blow away all the very expensive cars like Lamborghini's, the best Porsche`s and more, right off the line and right to the finish they are looking at the back of my car. All that one guy(Lambo driver) could say in total amazement was "Are those baby seats I see in the back?". It`s not the max HP that makes a great car but how you choose to set it up. Smaller twins like the dash 5`s can be Absolutely Deadly and as fast as you can handle if you do it right. You have to think outside the box and have alot of determination and want to send quality time with your car.

[STEALTH_R32GTR]

ill be doing this soon! add a few TOMEI parts into the mix

[Spency1983]

Originally Posted by Monster GT-R

The -10's were good but the response wasn't what I wanted. The alcohol injection I have now with some water mixed in (30% by mass) would have helped but really the displacement of the RB26 isn't quite enough for my liking. Now dash 10's on a RIP`S RB 30 would be more like it for me. I have had Dino Queens and I can`t say they are that enjoyable to drive. I used to race motorcycles when I was young and that bike was all top end and it was very similar to the Dino Queens, everything is at the end and everything before it was anxiety waiting for the boost. That makes for a ride that is more work than pleasure to drive. Dash 5`s can still get 600 or more to the wheels. Add a good 2 or 3 stage Methanol injection system and mix it to 20-35% by mass with water and even more fun can be had sooner in the rev`s.
The difference between stock and dash 5`s is big after 2700 rpm. I noticed that stock turbos on my car would start boost around 2200 -2300, dash 5`s around 2600-2700 rpm. Others may differ but that is what I remember. I can get the dash 5`s to come on as early when I set the methanol injection system to start spraying around 1500-1600 rpm. The turbo`s spool up sooner and as the sprayer on my car is 3 staged the car keeps pulling like an elephant right to redline (8500). If I didn`t put this stopping point in I`m sure the engine would never stop pulling until it let go. I love this engine. I`ve never seen an engine where the HP doesn't drop off, except this one.
I can`t say that I have driven a GT-R with a big single but from the Dino sheets I have seen, I would take twins over a big single for a car that you're going to drive regularly. If your building a track car where the rev`s are going to be closely managed the whole time the engine is running then go single cause in my opinion, it`s all work to drive it daily. I frequently blow away all the very expensive cars like Lamborghini's, the best Porsche`s and more, right off the line and right to the finish they are looking at the back of my car. All that one guy(Lambo driver) could say in total amazement was "Are those baby seats I see in the back?". It`s not the max HP that makes a great car but how you choose to set it up. Smaller twins like the dash 5`s can be Absolutely Deadly and as fast as you can handle if you do it right. You have to think outside the box and have alot of determination and want to send quality time with your car.

would you recomend any of these over the -5s?
Nissan Turbos and Upgrades,*Owen Developments Online Shop

[Monster GT-R]

PM me

good reading first

smallest to largest
707160-7
707160-9
707160-5
707160-10 need a stroker or Rb30DETT to a pleasurable drive

http://www.turbobygarrett.com/turbob...ochargers.html

[Aussie Godzilla]

Just rea this thread as i will be doing my turbos in a couple of weeks!!

Although after reading this i am un-sure weather or not to have a go at it...

Is it worth me taking the turbos off with the manifolds on them or undoing them off the manifolds whilst they are in the engine bay?

Should i buy some braided oil and wtaer lines or just use stock again?

And were is a good/cheap place for all new gaskets?

[Piggaz]

Originally Posted by Spency1983

how was the difference between the -5s -10s what boost and hp you got?

big difference between stock and -5s?

am planning to upgrade soon looking for around 800hp but torn between big single or twins any advice would be great

Going off a mates car. Same engine (RB 30), same tuner, same everything, only difference was turbo's.
Between GT RS's (which are pretty much -10's) and -5's, the -5's came onto 1.0 bar at 3250 RPM. RS's were 4600 RPM. Unfortunately the engine turned a bearing that run.
When he was driving it he did say there was no noticable drop in top end power.

The above graph is the same sort of comparison. Same engine, car and dyno. Changes were from RS's to -5's. That car has gone onto make 620 RWHP (462 RWKW)

I will have a direct comparison between the rubbish RS's and -5's. They are sitting in the garage and will go on in the next few weeks.

[Monster GT-R]

Originally Posted by Aussie Godzilla

Just rea this thread as i will be doing my turbos in a couple of weeks!!

Although after reading this i am un-sure weather or not to have a go at it...

Is it worth me taking the turbos off with the manifolds on them or undoing them off the manifolds whilst they are in the engine bay?

Should i buy some braided oil and wtaer lines or just use stock again?

And were is a good/cheap place for all new gaskets?

If you can afford the time and take lots of time and your mechanically inclined you can do it yourself. With that being said , it is not easy to do them and you have to have lots of quarter inch drives sockets and extensions and other tools and extensions to do the job. I changed my dash 10's several times , 2 and a half times to be percise, the first time I did it and then once more when I put dash 5's on. The first time around I damaged my oil supply line on the back turbo cause I didn't know the fitting below the bolt was shaped like a bolt head and I pressed to hard on the rachet when un doing the bolt and turned up the corners of the fitting and it leaked oil and I had to tear them out again ( that was part of the 2.5 times) . In the begining if I had someone who was good to work on it, I would have paid in GOLD to have it done for me. Now I've done it so many times I'd do it myself and save the money. LOL There is a sequence in taking them out and you can search that out on the forum. In My opinion, get the braided oil and water lines. I'm tearing my engine out now and I'll be putting them on this time around. What was really hard to put back was the drain oil lines 3 hours for 2 F*****n lines and a couple of bolts.

[Clive S-P]

I have taken my old stock turbo's out. I have swapped the oil and water lines over to one of the new ones (2860-5's), but the oil return flange on the bottom is smaller on the -5's.

Where can I get a different flange to bolt on?

[RonniNielsen]

Originally Posted by Clive S-P

I have taken my old stock turbo's out. I have swapped the oil and water lines over to one of the new ones (2860-5's), but the oil return flange on the bottom is smaller on the -5's.

Where can I get a different flange to bolt on?

You can just grind the holes to fit.

Ron

[Clive S-P]

Love a bit of grinding!
Thanks.

[Monster GT-R]

Yah ! I filed mine too and used them. Make sure you use a soft gasket material so it has lots of crush. that helps seal it up tight

[boterham]

Originally Posted by Aussie Godzilla

Just rea this thread as i will be doing my turbos in a couple of weeks!!

Although after reading this i am un-sure weather or not to have a go at it...

Is it worth me taking the turbos off with the manifolds on them or undoing them off the manifolds whilst they are in the engine bay?

Should i buy some braided oil and wtaer lines or just use stock again?

And were is a good/cheap place for all new gaskets?

I used the turbo install kit from kudos motorsports it contains everything you need and more.

I also had to cut off to waterlines i replaced them with new ones didn't use braided lines because the specs where dodgy,they were from kinugawa

[PetesGTT]

I installed a TOMEI ARMS M8260 TURBO KIT... Unable to post pics yet,not enough posts

[TheD]

With the engine in, by far the hardest part, if you have never carried this out before is figuring out what bits need to come out and in what order. It's awkward getting to a few of the manifold nuts and lining up the ally turbo pipes hen refitting can be a little tricky but patience wins out.
I would say for most, engine removal is impractical. I've done both now, engine in and engine out. Obviously engine out is infinitely easier.