My other 1303 GL

[Steve C]

Hi Wally

I've only driven it low boost so far, I've now gone back to street tyres, Nitto Invos 225/40 x 18 and 265/35 x 18 and its rolling on in 1st and 2nd, it didn't do this on the Toyo R888rs.

The tuner was non committal on what was robbing power, I will talk to the engine builder soon to see what he suggests. I'm going to see if there is pressure drop across the intercooler.

I think I have enough power for the time being.

Steve

[DORIGTT]

Steve,

I've got a few questions for you...

Would you run the same sized Toyos?

How are your tire temps / optimal grip with the 225 / 265 combination?

Those sizes strictly for looks/fit the wheels you picked or traction for that power?

Thanks my friend.

[Steve C]

I went that size in Toyos to get heat into them, my son with a 1904cc Type 1 motor had trouble getting them up to temp on his car and he is a much better driver than me, all the drifting practice I guess.

I've now fitted the 225 Toyos and some new 235 Toyos to some Hollow Spoke wheels, I haven't driven on the rears yet.

I would suggest for track going to as small a tyre as you can to get heat into them, if you find them wearing too quickly you could go up a size, my son works for Toyo / Nitto so I get family prices

I've run 215/40s on the front and 255/35 on the rear that looked right, Toyo ? Nitto only make a 225/40 but I found that the front tyre always looked taller that the rear which to me looks wrong, that's why I went 265/35 this time, so I suppose it is looks

I went back to street tyres as I found the R888rs a little bumpy on the street, BTW all sizes are 18s

[Steve C]

With all the Covid closures the local drag strip has decided to resurface the strip so I still haven't had the final tech inspection on my cage

I've entered a roll racing event at the Sydney Motorsport Park this coming Friday but the weather predictions aren't too good for that night.

I've fitted up my Mickey Thompson ET Streets for the event on some 18x9 Simmons OM wheels, they a 2454/40x18. Took it it for a kebab run the other night, they are hooking up nicely even though they have been sitting next to my garage unused for about 5 years

[Bogara_ZO]

Originally Posted by Steve C

With all the Covid closures the local drag strip has decided to resurface the strip so I still haven't had the final tech inspection on my cage

I've entered a roll racing event at the Sydney Motorsport Park this coming Friday but the weather predictions aren't too good for that night.

I've fitted up my Mickey Thompson ET Streets for the event on some 18x9 Simmons OM wheels, they a 2454/40x18. Took it it for a kebab run the other night, they are hooking up nicely even though they have been sitting next to my garage unused for about 5 years

Looks good, Steve 👍

[Steve C]

Thanks. Roll racing was postponed due to wet weather until 21st August

[Steve C]

finally got to go Roll Racing

https://youtu.be/oGQKTZghi0E

[Steve C]

Hi

I've been talking to my local Subaru tuner and AWD Subarus with similar specification motors to mine are making 360 - 380 kW at all four wheels.

I've been thinking that there must be a restriction somewhere in my setup, I'm running a Varex muffler and a water to air intercooler.

My ECU has an exhaust pressure map sensor so the other night my son and I did some extensiveness testing.

So 290kpa inlet, 350kpa exhaust On 25psi (eboost), so 1:1.2 which is quite acceptable.

We also checked pressure drop across the intercooler which was about 3 psi.

So now that I'm confident that my setup is not causing issues I'm going back for a touchup tune with some more timing and boost as suggested by the Subaru tuner.

Steve

[Wally]

🤞🤞

[Steve C]

Fitted up my track wheels with Toyo R888R on them to see how they would look. They are genuine hollow spoke 7.5x18 50 ET and 18x8 52ET

[H2OSB]

Gorgeous Steve. What side mirrors are those?

[Steve C]

Thanks.

They are local XY Ford Falcon mirrors that I modified to fit, they look cool but are a bit small. A link to a local website that sells them https://www.fordmuscleparts.com.au/s...keyword=mirror

I cut the bolt on base off and and had it welded up and I used the the stubs from VW mirrors so that I didn't need to drill any extra holes.

The people standing with my car, are me and Dinos son Valentino, then Dino who is a member on here and another friend of mine Barry.

I organise a VW cruise on the 1st Friday of the month (Der Erste Freitag) at Harry's Cafe De Wheels

[Steve C]

Weighed my wheel collection the other day
6 inch Cookie cutters with 205/50 x 15 Mickey Thompson ET street et = 15.7 kg.
6 inch Cookie cutters with 185/55 x 15 street radials 13.8 kg
Hollow spoke twist 8 inch with 235 40 x 18 Toyo R8888R = 20.5 kg
Hollow spoke twist 7.5 inch with 225 40 x18 Toyo R8888R = 19.7 kg
Boxster 5 spoke 8 inch with 225 40 x 18 Nitto Invos = 21.2 kg
Boxster5 spoke 10 inch with and 265 35x18 Nitto Invos = 22.4 kg
3 piece Simons OM 18x9 with 245 40x18 Mickey Thompson ET Streets 22.8 kg

[Steve C]

Hi

Another day another dyno run

This was on a hub dyno, same tune that made 319 rwkWon rollers made 350 rwkW on the hub, difference being no wheelspin. The dyno operator confirmed cars that don't wheelspin make just about identical power on both his Mainline dynos

The dyno guy didn't have 5x130 hub flanges so I bought these 130 to 114.3 adaptors from eBay

[Wally]

Nice results again!
At what boost pressures are those lines? Green line is 14,7psi or so?

He's missing out a lot of work not being able to dyno 5x130 haha!