hwen you say the 40r is more efficient do you mean that at 10k rpms? or are we talkin' the same power curves cept the 40 is better everywhere? i'm not familiar with twin scroll but it sounds like it makes the 40r like... amazing or something

 

Geoff,
I have a few questions about the vertical flow intercooler:

1. Is it compatible with the stock turbo or FP Green? Or only with your kits?
2. If I was willing to hack up my headlight, could the IC outlet be reconfigured to provide a more direct flow to the throttle body? Or is it just not worth it?
3. Is there any room to go any wider with the core? Or would there not be a noticeable benefit?

 

Wow! I had no idea. Thanks for those numbers, Geoff. So I guess it will be between F1-35R and GT4088R.......

 

the 40R is just a badass turbo. its a really simple design, but it works very well. Also it has a good variety of turbine housings to choose from. I am changing the turbo on my RB26 s14 from a 4202 to a 4088.

1) yes it is compatible with a stock turbo or any other turbo that sits in this general location

2) yes, and its worth it

3) that is a good question. this is actually a very large core, but ill find for you.

..... 40R...

 

just curious if 40R is too much for the road circuit?

 

Are these kits linear (as in, start with 30R then later swap turbo to a 40R)?

 

The 30r's have a t3 hotside so that won't fit the t4 bolt spacing on the 35/40 exhaust side. So if you went from a 30r to a 35 or 40r, you would also need a new manifold but Geoff told me that the downpipe and the rest stays the same. I do believe that you can go from a 35r to a 40r without changing anything except the turbo.

 

Well right on the full race website they say:
- Moderate Power Street/Road Race (GT3071R)
- Moderate Power Street/High Speed Circuit (GT3076R)

So a 35R might be cool for a High Speed track, but I'd think a 40 would be a turd.

 

that's what i was thinkin' too... am i buyin' in too much to the crazy twin scroll hype? i mean it sounds like sliced bread or something

 

depends what you are building! there are at least 2 very very fast Evos over here in the UK that are running 42Rs and they are NOT just drag cars! they spend alot of time at the tracks putting a hell of a lot of laps in.

but these are shop are running 2.3/2.4 stockers and built everything. they are stripped and caged, with all the other mods you could ever want for a road race evo (one even has air jacks!! )

from whats going on over here, if your sticking with a 2.0ltr (for rules or whatever) then the Gt30R series are the best bet. if you are pushing the engine out to 2.2/3/4 then your better off looking at the Gt35r. these are proven combos over here.

if you want more power though then the 40R looks to be a very good option. and with this manifold shouldn't be far behind the 35R in spool/lag. also its worth noting that the bigger turbos often run more power at less boost. thsi is much better for road cause work as 20min hard track work can turn a small overheating problem into a major one!

thanks Chris.

 

Well crap, I have things ready for an install the very end of august. I may have to call you today and work somthing out to see if I can get one by that time. A 40r kit that is if I am understanding your compairison with it to the 37r.

 

im saying the 40R is more efficient everywhere except for high boost and high rpm. Its efficiency is really noticed at lower rpms when the wastegates are still clsoed and the pulse conversion is at a maximum

it depends what the car setup is, who the driver is, and how good they are. If i could drive like i wish i could, and the car was setup the way it should be, i think a twinscroll 40R on a 2.3L would be a very difficult combination to beat.

the only difference in the kits is the manifold. if you run a GT30R its a t3 flange. The 35R and 40R are a t4 flange

that is correct

the 35R is a good option, but the 40R is certainly no turd

^^^ what he said

we could do a twinscroll 37R too, but i stand by my recommendation for the 40R kit

 

Geoff, would it be possible to get the 4088R kit without the Vertical Flow Intercooler, charge pipes, and TiAL 50mm BOV? Although I love the idea of it, omitting the intercooler and charge pipes and even the TiAL BOV from the kit would be cool for us guys on a tight budget with already upgraded intercoolers, charge pipes, and bovs. Im in no way bashing your kit- Im just poor and wouldnt mind saving a little bit on stuff that I might not absolutely need. BTW, thanks for being so quick to respond to all of our questions. I realize there are other important things you could be doing, so I appreciate you taking the time for us!

 

bump

 

thanks Geoff. shows that im finally learning something after all! lol

Chris.