Snowy's R35 Targa Testing And Development

[Snowman]

Great in theory - however there is the simple little rules stating for WTAC you can't strip the cars like mad for Club Sprint Class.

Interior

• Interior must remain as it came from the factory with the following exceptions

• Front seats may be replaced with cams approved seats.

• Rear seats may be removed.

• Carpet may be removed.

• Stereo may be removed.

• Air conditioning may be removed.

• Local modification to interior for fitment of a roll cage is allowed.

And what I can tell you is that the AC and the Stereo (if I can get it working!) are not going anywhere!

What I will need clarification on with these rules is the steering wheel as I currently run an aftermarket one and that may not be eligible with-in these rules.

Again - this is kind of the point of this thread I guess. To talk about how we go about building a versatile car with-in some specific rules and yet still make it as fast as we can.

[Snowman]

Quick update.

Fixed the broken boost solenoid, fitted an Akrapovic exhaust system and thanks to Aaron @ Import Monster got a great new set of shoes (Volk G12's)

Got a chance to get back to Phillip Island and did some tyre testing on the weekend.

Have now compared Bridgestones, Dunlops and the R888's and the R888's are by far the best of the 3 available 20" options right now - for sprint work at least.

Managed to improve my PI time to 1.46.75 - which is even better than my used A050's time. Car is still only running 15psi.

Have an intercooler, intercooler pipe kit and MAF sensor coming from AMS and will upgrade the intake pipes to 2012 OEM and see if we can't increase the boost some more.

[Ant97GTR]

Can vouch for the look of the rims as I was at the PI day as well....looks awesome!

[g35me]

Quick update.

Have an intercooler, intercooler pipe kit and MAF sensor coming from AMS and will upgrade the intake pipes to 2012 OEM and see if we can't increase the boost some more.

2012 US OEM?

[Snowman]

Yeah sorry - caught up in reading too many US forum posts on the matter.

ADM 2011 turbo intake pipes / US 2012.

FWIW they were around $600 for a pair from Nissan Oz. Much cheaper than the HKS ones!

I've also ordered a HKS DCT Cooler. Keen to see how good that works.

[Willo]

What were the times on the OEM Bridgestones vs OEM Dunlops (if you have a comparison on a similar setup) and any other comments on the differences in feel?

[Snowman]

I guess for those that don't read the US stuff - this is the difference between the 08-10 pipes and the 11+ pipes. The black line on the old pipes is the turbo flange diameter.

You really have to wonder if this was deliberate by Nissan as an easy power gain

[Snowman]

What were the times on the OEM Bridgestones vs OEM Dunlops (if you have a comparison on a similar setup) and any other comments on the differences in feel?

I was about 1.5s faster on the Dunlops over the Bridgestones.

The Dunlops have much more lateral grip. But at Winton I found they were surprisingly poor in the wet.

The amazing thing I found with the comparison of the Toyo and Dunlops was it wasn't so much the lateral grip that was different - the Dunlops are very good there - it was the longitudinal grip. So braking and power down in 2nd gear. That is where the Toyo's are MUCH better.

[N1GTR]

Reminds me of;

[Willo]

I was about 1.5s faster on the Dunlops over the Bridgestones.

The Dunlops have much more lateral grip. But at Winton I found they were surprisingly poor in the wet.

The amazing thing I found with the comparison of the Toyo and Dunlops was it wasn't so much the lateral grip that was different - the Dunlops are very good there - it was the longitudinal grip. So braking and power down in 2nd gear. That is where the Toyo's are MUCH better.

I assume you are talking about the RE70R and not the RE70R R2? The UTQG rating is the same for both but I would assume they would have to have made some improvement.

What was the difference in longitudinal grip between the Bridgestone vs Dunlop? I am mainly thinking forward to WTAC next year where UTQG 140 is the cutoff for the street class. When I get round to organising semis I'll be using 18s so there will be plenty of options there.

[g35me]

I guess for those that don't read the US stuff - this is the difference between the 08-10 pipes and the 11+ pipes. The black line on the old pipes is the turbo flange diameter.

You really have to wonder if this was deliberate by Nissan as an easy power gain

I got mine from Fontana Nissan for $370us. Bugger Nissan Australia, they are a rip off. I am going to fit them Thursday. Wish me luck. When you said 2012 I thought "Oh crap are the new ones even bigger"

[domino_z]

+1 on the inlet pipes

ive been quite vocal on here and nagtroc on how nissan has deliberately choked the turbo with the pipe diameter to ensure future marketing new model ops

i ordered the inlets together with my intake and couldn't understand back then why the yanks were creaming themselves over 3" maf intake tubes when it necks down to under 2" at the inlet anyway - seems they've now caught on

B the aftermarket inlets from HKS and Top Secret are a few mm larger than the 2011 oem

Edited November 14, 2011 by domino_z

[R31Nismoid]

Be good to see once you get more boost into it, and workout the issues at the moment.

Very interested

+1 on the inlet pipes

ive been quite vocal on here and nagtroc on how nissan has deliberately choked the turbo with the pipe diameter to ensure future marketing new model ops

Almost every manufacturer does that, how else do you think they get 10 years out of a motor and "magically" keep wringing power/torque out of it to add something new each year/revision etc

Wouldn't be surprised if Nissan already have an end figure/set-up ready. Just a matter of swapping parts, adjusting tunes until new motor time.

[Snowman]

I assume you are talking about the RE70R and not the RE70R R2? The UTQG rating is the same for both but I would assume they would have to have made some improvement.

What was the difference in longitudinal grip between the Bridgestone vs Dunlop? I am mainly thinking forward to WTAC next year where UTQG 140 is the cutoff for the street class. When I get round to organising semis I'll be using 18s so there will be plenty of options there.

Yes I was using the original RE070R - not the new ones. And admittedly I was comparing older used Bridgestones to new Dunlops - so there might be something in that. I still think the Dunlops are going to be the better of the 2 tyres - but given Marek won Clubsprint on the Hankooks this year and you obviously have a set of 18's they might be worth considering as well? I will personally run Superlap on the Dunlops though.

As a side topic - I really noticed the car was wallowing in the rear on the longerer high G corners. Have other guys found that as well? I'm only running stock suspension currently but am thinking of grabbing a set of sway bars to see if it helps settle that down.

[domino_z]

Almost every manufacturer does that, how else do you think they get 10 years out of a motor and "magically" keep wringing power/torque out of it to add something new each year/revision etc

Wouldn't be surprised if Nissan already have an end figure/set-up ready. Just a matter of swapping parts, adjusting tunes until new motor time.

agreed

it's comical reading the new model year threads over on nagtroc where the american consumer loses their mind over the perpetual model release program and leans on that cheap credit to keep upgrading year by year

in fact the marketing departments over there are so clever they exclusively for the americans name a model year +1, just so they are buying the future model before everyone else

[Snowman]

Well they are a special lot. Remember when one American beats another American that makes him the World Champion. Even their national baseball competition is known as the World Series

[R31Nismoid]

lol @ world champion - so so true.

Silly goobers.

[domino_z]

lmao

even the north koreans believe their world champs

http://www.youtube.com/watch?v=zE86lLz7Iss

[NickR33]

sooo any truth to the rumour Chris pulled boost out of the 35 so he could beat you round Winton?

[Snowman]

Yeah he pulled boost out after the first session! LOL

He mentioned something about "safety margins" but yeah I presume it was referring to me getting near his times and him making sure that didn't happen.

But I'll have his measure by Easter I reckon.