Jump to content
SAU Community

Recommended Posts

24 minutes ago, SimonR32 said:

Direct back to back change... Same boost, 30psi

6870 made even more power with extra boost while the 9180 was all out

Yeah not too surprised that the EFR9180 was out, I would 100% expect the 6870 to outflow it - and by a bit of a margin.   The boost threshold however is a definite surprise.   Interesting how some results can vary!   Hard to know what to make of it.

On 4/25/2019 at 2:27 PM, SimonR32 said:

The precision is the ones that comes on way earlier and makes more power...

I'd like to see the transient response make up for that deficit 

Which rear housing was on the efr?

  • 3 weeks later...

Hey all, 

Bit of an update from late last year. 

Precision 6062, built s1 rb25det, e85 etc

Got it tuned last year and it made 431kw @26psi apparently the turbo was maxed out. Dyno dynamics roller dyno. 

I decided to change the wastegate springs from 14psi to 21psi, fixed a boost leak i found underneath the intake manifold ( idle control- cold start valve area ), hpi evolve radiator and decided to run a viscious fan again.  Might have been a few other minor changes. 

We stopped at 29psi as we were a little worried about the arp 2000 headstuds not handling much more. Turbo seemed to be still going and I think we could have gotten a bit more out of it if the headstuds weren't a limiting factor. 

This is on a mainline hub dyno so it is 710hp at the hubs. Still quite happy with the result and I'm sure the 6062 could keep pumping. I attached a video of the run, hopefully it works. 

We used Real Dyno hub dyno and Brad Sheriff from Boost Automotive Tasmania tuned the car. 

20190515_163330.jpg

  • Like 2
  • 2 months later...
38 minutes ago, reaper said:

Nope haven't seen anything. I'm trying a 7275 this week and will compare to my old 6870.

What was the 6870 like? I know I could search this post but who the hell knows how far back I may need to go to find a post....

I have a 6766 with a 1.0 rear and I don't know if the lack of driving but its started blowing blue smoke the other day. highly unlikely to be the  engine so it might be time to up the turbo a little

4 hours ago, feedmyfast said:

Hi Guys,

sorry it has been so long. here are the results from my 6466 @40psi. The car is a different animal now, had to get some drag radials to put down the power.

Loca Dyno - 873.jpg

What's the rest of your engine setup?
I also have a 6466 to go on mine.

24 minutes ago, iTzTMG said:

What's the rest of your engine setup?
I also have a 6466 to go on mine.

S1 RB25, Kelford 270 cams, supertech valve train (stock sized), CP pistons (stock bore and compression), Manley rods, balanced crank/ block. Otaku manifold, ID2000s

  • Like 2
6 hours ago, feedmyfast said:

Hi Guys,

sorry it has been so long. here are the results from my 6466 @40psi. The car is a different animal now, had to get some drag radials to put down the power.

Loca Dyno - 873.jpg

Have you raced it? what mph did it run if you have?

Edited by ido09s
6 hours ago, feedmyfast said:

Hi Guys,

sorry it has been so long. here are the results from my 6466 @40psi. The car is a different animal now, had to get some drag radials to put down the power.

 

Ha! That is ridiculous, nice work!  That's gotta be one of the more stout RB25 setups out there, being SAU people will probably make dyno comments but realistically - an RB25 with 270deg cams and 40psi pumped through it on E85 is going to make some serious power :)

What is the spool like?  There is no rpm scale on the dyno plot (NFI why people print plots like that), so a bit hard to tell.   Be very interesting to see how it goes at the strip, hope you have a decent trans! :D

 

4 hours ago, Lithium said:

Ha! That is ridiculous, nice work!  That's gotta be one of the more stout RB25 setups out there, being SAU people will probably make dyno comments but realistically - an RB25 with 270deg cams and 40psi pumped through it on E85 is going to make some serious power :)

What is the spool like?  There is no rpm scale on the dyno plot (NFI why people print plots like that), so a bit hard to tell.   Be very interesting to see how it goes at the strip, hope you have a decent trans! :D

 

Also very curious to know what the spool is like! Looks like it would be an absolute weapon, good job!

9 hours ago, feedmyfast said:

S1 RB25, Kelford 270 cams, supertech valve train (stock sized), CP pistons (stock bore and compression), Manley rods, balanced crank/ block. Otaku manifold, ID2000s

What turbine housing size - also single/split pulse + gate setup?

Perhaps drop something into the RB25 dyno results page

Strong result.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Forgot to include this but this is the mid section of my steering rack that looks like it has a thread/can be turned with that notch mentioned in the post:
    • Hey everyone, Wanted to pick some brains about this issue I'm having with rebuilding my 33 rack (PN is 49001-19U05). All of the tutorials/videos I've seen online are either R34 or S Chassis racks which seem to be pretty straightforward to disassemble but this process doesnt carry over to my rack. Few of the key differences that I've noted The pinion shaft on the other racks bolt on with 3 torx bolts: Whereas my rack bolts on with 2 allen head bolts: These changes are pretty inconsequential but the main difference is how you pull the actual rack out of the housing. The other skyline/s chassis racks can be taken out by tapping the rack out of the body with a socket and it just slides right out. I'm unable to do that with my rack because there's a hard stop at the end that doesn't let the seal/shaft be tapped out. Can also see a difference in the other end of the rack where mine has a notch that looks like you're able to use a big wrench to unthread 2 halves of the rack whereas the other racks are just kinda set in with a punch. My rack: Other racks: TLDR; Wanted to know if anyone has rebuilt this specific model of steering rack for the R33 and if there were any steps to getting it done easier or if I should just give this to a professional to get done. Sorry if this post is a bit messy, first one I've done.
    • I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
×
×
  • Create New...