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19 minutes ago, Full-Race Geoff said:

Built b series drag race Honda, full race top mount kit.  only turbo changed- no other changes.  

Green line = 9180 1.05 a/r
Red & blue = 8474 1.45 a/r

efr-8474-9180.JPG

This is from the blue DC2, right?  I was told that this is running an EFR9280 now, and that this comparison is comparing the EFR9180 with the EFR9280.... in fact, if there are no crossed wires then there is a pic of this car on the Full-Race FB page saying it has an EFR9280 now

Edited by Lithium
  • 2 weeks later...
  • 2 weeks later...

I am also looking for a T4 1.05 External gate twin scroll housing for EFR7670 if anybody knows of one for sale.

Part number is 12701019047

I am unsure if all B2 turbos use the same 'D type' rear housing that i am looking for or if it is specific to only 7670

Thanks

8 hours ago, iruvyouskyrine said:

 

Part number is 12701019047

I am unsure if all B2 turbos use the same 'D type' rear housing that i am looking for or if it is specific to only 7670

Thanks

It would be turbo specific to fit the right sized turbine wheel.

2 hours ago, Nosure said:

Any idea is that direct swap from 8474 1.45a/r to 9280 1.05 a/r without any exhaust work?

Between the 1.05 and 1.45 housings is 7 mm. The dump has to move back 7 mm, it doesn’t matter if it’s a 80 mm wheel or 74 mm wheel.

4 hours ago, Piggaz said:

Between the 1.05 and 1.45 housings is 7 mm. The dump has to move back 7 mm, it doesn’t matter if it’s a 80 mm wheel or 74 mm wheel.

Ok. . Thanks. So 74mm 1.45 to 80mm 1.45 they should be direct swap. 

This is a great thread,

After reading a huge chunk, I have a question for all those high hp setups running 8373 and up.

What exhaust are you all running on these Skylines?

Reason I ask is because I ran into flow issues on my little track built EVO X running 8374 (IWG) with a 3.5" straight through race exhaust, we removed it and ran with downpipe only and made 30whp gain at only 1.6bar boost. I can only imagine how much more power you can make with a side plant (exhaust cutout operated with a valve). I'm installing one now...

I was looking to upgrade my 8374 to a 9180 but now thinking after reading this I'll go to a 8474, my setup is sleeved block 2.2ltr (4 cyl obviously) with direct port meth injection, sequential 6 speed, head work, oversized valves and makes over 600awhp on a mainline dyno (I flew the boys from Powertune over to tune it). peak power is 8500rpm and I get 2 bar of boost by 3,900rpm in 4th gear. Car weighs 1280kg after stripping it (with roll cage) and being built for Sepang F1 circuit.

49689049106_c7969e3bc2_c.jpg

49689361507_4db776250e_z.jpg

49689352177_62f38b9c54_z.jpg

 

Edited by Robo
  • Like 3

'little' evo.

You can plumb an exhaust in if you actually plumb it further back (and not lose power), but realistically when you've gone to the degree most people have in these kind of builds it's venting to atmosphere and everyone prefers it that way.

On 4/6/2020 at 4:40 AM, Robo said:

I ran into flow issues on my little track built EVO X running 8374 (IWG) with a 3.5" straight through race exhaust, we removed it and ran with downpipe only and made 30whp gain at only 1.6bar boost. I can only imagine how much more power you can make with a side plant (exhaust cutout operated with a valve). I'm installing one now...

I was looking to upgrade my 8374 to a 9180 but now thinking after reading this I'll go to a 8474, my setup is sleeved block 2.2ltr (4 cyl obviously) with direct port meth injection, sequential 6 speed, head work, oversized valves and makes over 600awhp on a mainline dyno (I flew the boys from Powertune over to tune it). peak power is 8500rpm and I get 2 bar of boost by 3,900rpm in 4th gear. Car weighs 1280kg after stripping it (with roll cage) and being built for Sepang F1 circuit.

 

49689352177_62f38b9c54_z.jpg

 

 

Hi Robo,  thanks for using our EvoX turbo kit.  2 bar at 3900rpm is excellent for the 8374.  What exactly are you looking to acheive and do you have any reason why you would not want to go external WG?

In the case of a RHD evoX, there is less room than LHD.  As you know, the steering shaft area is your space constraint from using a large diameter downpipe.  Dumptubes for an external WG can be tough to package - but doable.. depending on what your exact goals may be will ultimately dictate the piping configuration.  you are welcome to email me directly to [email protected] and ill do my best to help 

 

 

Edited by Full-Race Geoff

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