Building An Rb26 For Response....

[gtr jet]

I can't wait to see how thing turns out. It's going to be a monster.

[cobrAA]

HI Charlie, going to have a look at Chavey's build, thanks

I see Piggaz is just ordering the OS88 box , cannot wait to hear how they go as a DD and Paul's car should be a good test and I believe he likes to drive hard as he keeps braking things, sorry Paul

I dropped my car into the workshop on Tuesday and now the wait starts

After listening to you blokes I ended up confirming some changes to the driveline and will see how the Box goes or when it goes before I change it.Better start putting the $$$$s away

Gone with the Coppermix C Spec Twin(over 700HP), Nismo slave cylinder, Quaife front diff , modifying the Trannie and already have a Nismo 2-way LSD /back.

The boys said to try the Unigroup 260 10.8 cams as they will give me more air, Better springs and retainers, cleaning the head up, oversized valves. Staying with the PT6262 B Turbo (over 700hP), maybe a larger back housing depending on the results.

Just waiting to see how the Walbro 460lph goes when the tune is being done and work off the results

RB30 Block has been modified. Plus all of the other part to go with the Nitto 3.2 Stroker Kit to make it a strong motor all round.

Going to have to make it stop now, Piggaz suggested I look at the Endless Brakes as they are strong and still work OK cold for a DD.

While they are doing the job I am having the Haltech Flex Fuel Sensor tuned in with the build , just in case, well you never know what you are going to want in the future, I was happy with the way it was, well for a few weeks ,haha

It will be around 400awkw, no big turbo/s or big cams, response and linear power from the start to the limiter, well

all this and no EFR ?

[Ben C34]

There are other turbos out there cobraa. And I'm sure it will be a sweet result.

[Nismo 3.2ish]

I guess only time will tell how it all works together, the worst option is to change the turbo, then flog it off to get a couple of $$$s back

I just hated the idea of changing it, just put it in and it is good for 700HP + and as the was made a huge difference how the car drives, so I want to see how it goes as I could not find a comparison, so I guess I will be the first with the TP6262 on a 3.2 stroker

[XKLABA]

What waste gate have you got Pete ?

[sneakey pete]

I'd be interested knowing how many people making big hp on a single use WG on the manifold vs WG on turbo housing. Particularly how it results to boost control/spool times/spool response etc.

[Ben C34]

I'd be interested knowing how many people making big hp on a single use WG on the manifold vs WG on turbo housing. Particularly how it results to boost control/spool times/spool response etc.

Would be interesting but I don't think it will ever happen. I can't see 2 people having an identical setup (except gate position) to compare, or someone swapping gate position just to compare.

[hypergear]

I'm uploading my result here. This is a newly developed SAT ATR45 turbocharger. The engine is fully stock, unopened. Using factory cams, and factory cam gears. This is a single turbo, externally gated on E85 fuel. It is pretty good to drive on road.

Power n Response against factory twins:

[Blackkers]

Uhh, is it normal for stock twins to make 275kw?

[Badgaz]

yeah i'd say so..... 271kw here on stock twins.

[Duncan]

no, it is pretty high. I think dynopack might be a hub dyno.

If I am reading the last graph correctly the standard turbo(purple?) is at 18psi which is high for a standard turbo.

my race car makes less than that with r32 n1s at standard boost (12psi).

[SimonR32]

no, it is pretty high. I think dynopack might be a hub dyno.

If I am reading the last graph correctly the standard turbo(purple?) is at 18psi which is high for a standard turbo.

my race car makes less than that with r32 n1s at standard boost (12psi).

Nah 360ish is normal for 15psi on stock R33 GTR turbos, pushing a bit more boost should see what Stao makes.

In saying that, we had a PTE 5858 on a RB25 NEO that was all over that SAT ATR45 on less boost

In saying that, Stao that turbo

[Hadouken]

Surely you mean 260. And anyone who decides to run more than a bar of boost on standard gtr turbos, does not care if a exhaust wheel flies off.

[mr skidz]

wheel cant go far the cat will catch it.

[Hadouken]

Or maybe mr piston

[mr skidz]

Or maybe mr piston

sump will catch the piston. #allbasescovered

[Anfanee]

i can confirm said exhaust wheel theory.

[XKLABA]

I make 261rwkw on 16psi and 293rwkw on 19psi on a chassis dyno from stockers and with a few 125mph passes would confirm that power

So 275rwkw from 18psi seems about right, though I do believe the Dynapack is a hub dyno so that might be low

Would like to see a graph using the same boost level though

[Piggaz]

I make 261rwkw on 16psi and 293rwkw on 19psi on a chassis dyno from stockers and with a few 125mph passes would confirm that power

So 275rwkw from 18psi seems about right, though I do believe the Dynapack is a hub dyno so that might be low

Would like to see a graph using the same boost level though

Was waiting for you to say something.

[SimonR32]

Surely you mean 260. And anyone who decides to run more than a bar of boost on standard gtr turbos, does not care if a exhaust wheel flies off.

360 horsepowers