BW 9179 Rolling Road Plots?

Has anyone had a 9179 turbo'd car on the rollers with stock cams in a manual car?

I'm trying to figure out how it compares to some of the Precision stuff but the only SRR printout I've seen from SRR with stock cams is Glenn's but that's an auto.

Cheers

Dan

I guess not

Luxluc? not sure what cams he has.

Hes got 264 iirc mate

Yep, HKS manifold, HKS 264's at 1.5bar.

This is what I have so far....

Ryan's is the oddball really as his cylinder head has had some work so not really a fair comparison.

I've stuck your 67DBB 1.5bar run in there for comparison...I'm trying to decide if I want to try a different turbo but my setup is hard to compare to as it spools different to any normal kits and it's hard to make comparisons....your one here is the same tubby as mine but obviously on the tubular manifold.

Very similar, if the 67 had cams they would be much the same i suspect, not worth the change imo, if you want more power id go bigger, billet 7175 looks a superb turbo.

Go big or go home .... Gt47-80

Luxluc? not sure what cams he has.

I'm on HKS manifold and HKS 264 cams .. thanks James

Go big or go home .... Gt47-80

During winter, I'll go for a GReddy intake plenum .. and for a remap to 1.8-1.9 bar next spring. Would like to see how close I can get my 91-79 to your setup (power-wise)

I have E85 in mind, but not sure how much more this will bring at 2 bar over 1.8 bar on VPower !!??

If you can get E85 easy then run it, get some 2000id injectors and go for big boost, id love to run E85 myself, id do a 2.5bar map and go for 1000bhp.

Maybe stupid question, but does E85 bring more power at the identical boost vs pump gas?

Maybe stupid question, but does E85 bring more power at the identical boost vs pump gas?

If its mapped for it you will, you can put a lot more timing in with E85/race fuel.

Thanks for the info Jamie.

I have only one issue, which is that I need to get my 850cc back in once a year for MOT emission tests, as Ryan thought 1200-1500cc won't idle nice on VPower ( I would like to have 2 maps ; one for E85 and most of the time, and a VPower map for MOT)

Thanks for the info Jamie.

 

I have only one issue, which is that I need to get my 850cc back in once a year for MOT emission tests, as Ryan thought 1200-1500cc won't idle nice on VPower ( I would like to have 2 maps ; one for E85 and most of the time, and a VPower map for MOT)

High imp injectors such as ID2000 will idle like stock.

During winter, I'll go for a GReddy intake plenum .. and for a remap to 1.8-1.9 bar next spring. Would like to see how close I can get my 91-79 to your setup (power-wise)

 

I have E85 in mind, but not sure how much more this will bring at 2 bar over 1.8 bar on VPower !!??

Yeah E85 will help u loads. Thats why the yanks get such good figures.

You Should get well into the 700's mate.

To be honest if i change my set up again i would go huge:

GT47-80, built engine, solaris and of course a manual set up

Dan, I also run 264s...

built engine, solaris and of course a manual set up

Yeah .. built engine is on the top of my list too.

Paul (Whiffin) will get my car during my next deployment to Aghanistan(ISAF)

Hey Luc, I'll look after it for you...

Hey Luc, I'll look after it for you...

If you promise me that the engine build is done when I'm back, no problem mate ;)

Very similar, if the 67 had cams they would be much the same i suspect, not worth the change imo, if you want more power id go bigger, billet 7175 looks a superb turbo.

The 7175 is probably a bit big for me but I'd need to see some comparative plots to a cast 67DBB to decide for sure. My potential shortlist so far is:

9179 0.88 undivided

6765 0.96 undivided (to avoid the apparent surge issues with the 0.81 and stock cams - no doubt this would be even more apparent on mine as it spools extremely fast anyway)

But to be honest I'm only doing it out of curiousity, the car is great as it is especially after the recent remap but I can't help trying new things

Dan, I also run 264s...

Thanks Glenn, am I right to think your one is an auto?

Dan, yep. Now sourcing a built autobox to handle a bit more torque...

Has anyone had a 9179 turbo'd car on the rollers with stock cams in a manual car?

 

I'm trying to figure out how it compares to some of the Precision stuff but the only SRR printout I've seen from SRR with stock cams is Glenn's but that's an auto.

 

Cheers

Dan

Have a read through my turbo kit thread, I tested the turbo on one of my manifolds on a stock engine.

http://www.mkivsupra.net/vbb/showthread.php?t=181671&page=15

Thanks Paul - that is exactly what I was after. I remember seeing those plots at the time but for some reason I ignored the 9179 and only took notice of the 8875.

This is how it compares to my non billet 67DBB when it was breathing through the pea shooter exhaust...

...the 9179 actually just eeks ahead around 4750rpm but it looks like I'd want a bigger turbine housing on it to keep up with the Precision turbo above 5500rpm - I suppose that's not a major problem but I wouldn't want to drop too much off the bottom end. Once I've rerun mine next month at SRR with the new exhaust I think I'd like to try the same 0.88 undivided 9179 that Ryan has and see how that compares.