My new engine - tuning *update* 25psi ='s :D

[Steve]

Nah, bit different one or two (or even a few) going for a spin through the hills, dont see many cops - but every cruise I have been on, well they seem to notice alot of nice cars, and on public hols, I get scared:D

I had to push it hard, I was trying to keep up with a slammed, every sus mod, very lightened S14. Started loosing front end grip first, so I slowed a bit more for the corners - then the S14 started getting away - then comes a corner that I didnt see until it was too late:p:D If only you could get a skyline to handle like a sylvia, the ultimate car. Anyways, I still have a few things I can do to tighten things up a bit, enough excuses.

[EnricoPalazzo]

Let me give u a run. I reckon i could out run u on some of the rds im used to

[Steve]

Dont mind having a bit of a play, but not really into street racing, thats where problems start. Maybe next track day, if you dare:D

At the moment, I reckon a bog stock V6 commodore would get me off the mark, just cant get any traction through 1st or 2nd - 3rd is where the fun begins for me (gotta get some decent rubber dammit)

[Cubes]

Steve,

Do you have Adj. Swaybars?

[Steve]

Yes, why you ask?

[Cubes]

Tweak them a little to reduce understeer.

[ylwgtr2]

looks great....good work!

[Steve]

They are tweaked. I have also done front and rear strut braces - the turn in is great, just the tyres dont grip too well when you go fast enough:D I woudnt mind a bit more camber in the front, but that means adj camber arms. I would love to drop the car about another inch, but the front bar wont like it at all - protests now. and some nice R rated rubber.

[SLY33]

$160 is very cheap for an HKS actuator. I got quoted through GCG (they seemed to be the only ppl i could find that had one in stock) $380!!! bugger that!

[hippy]

matt... you're still doing powerslides?? man you are crazy ... reminds me of the time u took me for a ride in your car ... farkin freaked me out u bastard ... i thought u were going to loose it LOL but nope u had it all under control ... (well i just thought u were lucky at the time ) ... anyways be careful ... i'd cry if that car had even a scratch on it!!!

[EnricoPalazzo]

Steve: I dont mean racing, comon, wer more mature than that, i mean, next time we are up for a cruise, we should stick together, just like wat u wer doin with the s14

Sly33: Greenline in japan sellin them for about 9,800 yen, + about max 2500 shipping. I calculated that to about $150 using current exchange rate. I get my parts from them and so have many others.

http://www.greenline.jp/catalogue/bcpartli...=R33B&intake=FI

[whatsisname]

The tuning has been done

The old engine made a best of 257rwkw on .95bar, this figure was achieved with a less than 'safe' tune. I say less than safe as it cracked a ring land.

The new engine (with a nice 'safe' tune) made 268rwkw on 1.1bar & 273rwkw on 1.3bar. The peak gain between 1.1 & 1.3 doesn't sound like much but the torque & mid range gains are impressive (700n of tractive effort & ~20rwkw). The minimal peak gain is due to boost dropping by ~2psi up the top end. A 1.0bar actuator, or increased tension with the current actuator, would see a few more rwkw on the same boost levels. I wasn't exactly suprised that the actuator problem arose.

Judging by the increase in power & torque (across the rev range) that 2psi made, & the fact that inlet temps don't increase with the extra 2psi, I'd say my turbo still has more in it. I'm sure that with 1.5-1.7bar it would make quite a bit more power. I'm very happy with ~270rwkw on 1.1bar all day everyday

A huge thanks to Shaun (Boost Worx) for spending the best part of 2days on final tidy- up work & tuning, & charging me stuff all considering the number of hrs!

[Chris32]

Good stuff Matt, when are you heading out to the strip?

There is a easy 12 for the taking I reckon with that sort of power - see if you can knock of Grepin and Freebaggins time and set something for them to chase!

[Freebaggin]

Good stuff Matt, when are you heading out to the strip?

There is a easy 12 for the taking I reckon with that sort of power - see if you can knock of Grepin and Freebaggins time and set something for them to chase!

Turn it up!

Great stuff Matt, you'd be very happy with that! Very timely re 4,6 & Rotor shootout.

Your turbo is smaller than mine so that power at that boost is excellent, interesting to see what timing Shaun was able use safely.

When are we gettin some other scrubbers on the track!?!

Plenty of cars with good power that can get into the mid 12s now.

[whatsisname]

Thanks guys

Timing is 15' on 17-19psi.

The cars next run @ AIR will be during the 4,6 & Rotary Nat's Shaun gave me an offer I couldn't refuse

Late breaking news! As the car is still at the workshop (had a few minor things to do) Shaun is going to run more boost/timing to see how much it can make for drag strip duties Gotta' love the Microtech LT handsets ability to hold 4 different maps

[Chris32]

Good stuff Matt, will be good to see the car make its drag debut on the new motor at the Nats, will be awesome - you going to run the 540S or slicks?

[whatsisname]

I'll probably stick with 540's mate, HPI style

Another small piece of info that's worth mentioning.... the original plan was to use 8.0:1 CP pistons & o'ring, however this plan changed to using a Grex 1.6m gasket. Due to this change I thought that the final CR had ended up @ 8.4:1, however the final ratio is indeed 8.0.

We can now lean on the timing a tad more than we have

[Chris32]

cool, or see if you can get some Nitto's from somewhere? 540S are still great, as Greg showed, just need a good 2nd gear Burnout to get some heat into them - don't wear them out too much, as you know they have been replaced with the RE55S, which are stickier than 540S, so would be better for drags I reckon - just didn't last long enough for me to find out!

[whatsisname]

I'll see how I go on the everyday 540's. I'm not expecting too much, I haven't dragged the car for a looong time! Yeah I doubt I'd go for 55's after your experience with them, unless they've improved them?

Here's the dyno sheet from the recent tuning. The power dropping off at the top end of the curve is due to the 2psi boost drop I mentioned above. And for those that are real nit pickers, yes I know the 17psi run is only 265rwkw but the best on 17psi was 268.Xrwkw, so there

[EnricoPalazzo]

Awesome.