Mod path started

[lautray]

Spent a few hours in January with Dale at CHE using their dyno. Learnt to use HPTuners (a little). Thanks to Dale for helping us out, & Duncan, aka Maroubra speedshop, for talking me into giving home-tuning a go.

Here was the result of the Cam only.

Cam specs: 224/228 112lsa ~56x lift?

http://www.trackchat.com.au/media/data/500/medium/Cam_only_dyno_charts_0001_2.JPG

Couldn't translate this into a worthwhile time at wsid as the car had mechanical issues (my excuse anyway ;)), but managed 2 12.4's missing gears.

Previously, bolt-on dyno was 260rwkw with Dick's rtls1 tune on a Dynolog dyno, so not exactly apples with apples. Ran pb of 11.91 @ 113 Bolt-on, but sotp is much, much stronger now.

Russo heads to go on this week.

[NickS]

** Eagerly awaits further updates ** ... nice number so far K, keep us posted.

:thumbs:

[cosmo vyss]

I was wondering when i was going to see a post about this. I popped in said hi to the team whilst this was going on. A good day was had a heap of interesting stuff learnt. :beer: Big thanks to Dale and CO for letting me be there and the beverage afterwards was very nice. :beer:

Anyway great numbers to start with Eric.... I am waiting eagerly to see how much of an improvement heads actually make.

Keep the info comming.

JB

[Febs]

283.3rwkw home-tuned. Good going mate! :D

[scat2k3]

Impressive Erik. 280 plus RWKW and Melbourne to Sydney on 1 tank of fuel.

I'm looking forward to seeing what this thing will run at WSID, especially in the cooler months.

Cheers,

Scott

[lautray]

Before some start querying the "low" nm curve, I think you'll find it is the difference between a Dyno Dynamics dyno & a Mainline Dynolog dyno. This is a previous dyno sheet (bolt-on; filter in/out test) on a Mainline dyno done by Todd:

http://www.trackchat.com.au/media/data/500/medium/dyno_sheet_iii_17_nov_2005.JPG.

The top curves are the torque. The figures are much higher than the DD dyno. Don't think my car has lost 200Nm somehow :lol: :lol:.

[SSUte01]

Are we to assume by the new avatar that someone has been to a Dyno following a certain headjob.

Impressive results as always, well done to those involved:bravo:

[lautray]

Are we to assume by the new avatar that someone has been to a Dyno following a certain headjob.

Impressive results as always, well done to those involved:bravo:

Funny how my avatar changes without my input ;) .

Dale put the car on the dyno today & it made 305rwkw. The afr's were a fair way out, up to 1 afr point rich ie between 11.4 & 12.0 (long story) & there was definitely a few more kw to be had. Apparently not too shabby for tri-y's though. The 4>1's & 3" cats will be going on shortly.

I'll post up dyno sheet soon.

[NickS]

:bravo: ... WOO HOO !!!

Nice numbers Bus Racer, can't wait to see what she pulls when you're finished. Well done.

On that other matter we discussed this morning ... did anything eventuate ???

[lautray]

On that other matter we discussed this morning ... did anything eventuate ???
Sort of, but may need your help... will pm/msn with more detail :).

[RedVYIISS]

great results Erik.

I see two very quick cars at the Wakefield day. Interested in what fuel consumption you can get out of it once the tune's sorted. The heads should improve things a little so awesome power and awesome fuel econ.... you'll soon have the greenies selling their Prius's and lining up for one of them thar >300 rwKw C'dore thingy's!!!!

[NickS]

Sort of, but may need your help... will pm/msn with more detail :).

Anytime ... :yep:

[lautray]

The Russo brothers fitted some Di Filippo 1 3/4 4>1 headers & 3" cats (thanks Dale ;)) yesterday. Went out to CHE with Dunc today to gauge how well they flow. Was an "interesting" result. "Interesting" because it showed just how well the old Wildcat 1 5/8 tri-y's flowed. Final result was 310.6rwkw, or 415rwhp in the old scale. The head/cam with the tri-y's dyno'd in at 305.7, but with quite a rich tune. So, optimised, it would have pulled closer to 310rwkw. Nothing ventured, nothing gained imo. But, am told that the catback is a restriction, so will look at a dual 3" soon. Apparently the 4>1 will allow better flow for later mods.

Thanks to Dale & the CHE boys for their time & friendly advice :).

Here is the chart:

Red line line is cam-only: 296.5rwkw
Blue line is head & cam: 305.7rwkw
Green line is head & cam with DF 4>1: 310.6rwkw

http://www.trackchat.com.au/media/data/500/medium/hc_df_dyno_comparo_ii.JPG

[cosmo vyss]

Eric,

Thats a good result and no doubt with a new cat back those di fillipo's will flow better. Still 5rwkw gain is a gain. Looks like your mod path is comming together nicely.

JB

[Quadcams]

A gain is a gain Erik, some good ripping through the gears should see you well into the 11's mate.

Definate good gain in torque with the heads though.

[lautray]

Today I spent a couple of hours out at Castle Hill Exhaust to quantify the the CHE dual 3". After tweaking the tune (;)), we found that the car made max power without having max timing (substantially less in this case). Here's the result:

The red line is head & cam with the old dual 2.5" & the blue line is the new CHE custom dual 3". Is good for 7rwkw, or 10hp, & some Nm in the mid-range too :D.


http://www.trackchat.com.au/media/data/500/Dual_3_inch_0001i.jpg


http://www.trackchat.com.au/media/data/500/Dual_3_inch_0002i.jpg

Hoping for some improved mph at wsid tomorrow.

Next & lastly (I think) will be the ported ls2 manifold & Holley 90mm.

[10sec_rx7]

After tweaking the tune (;)), we found that the car made max power without having max timing (substantially less in this case).


let the road tuners put that in the pipe and smoke it! when Eirk is saying it made more power less timing it was over 10rwkw with a lot less timing than the car has ever run before..