My other 1303 GL

[Steve C]

Hi

Just had my exhaust coated at Hi Octane coatings in Rydalmere, they did a great job. So hopefully more power for the Snowy Mountains 1000.

I also found that my infernal, sorry internal wastegate was open which now explains the funny noise the motor was making, not to mention that power had dropped off, sounded like squeaking cam belt bearing, I've been pulling parts off the car for weeks trying to track down the noise.

Also took the opportunity to fit a better up pipe. I also put an extra spring in my wastegate, its now running 19 psi gate pressure.

Another tune next week with LS2 truck coils, should make more power







Steve

[Wally]

The 15" tire combo is certainly a good idea with dragracing. You only mention ratio's, but the weight advantage might help even more ;-)

Didn;t know that the suby had log-style exhaust manifolds!? Even more power, especially up top, can be had with a decent 4 into 1 exhaust header.

Best of luck at the races!

[Steve C]

Hi

Thanks guys. The 15 inch wheels are very light compared to 18x8 Cayenne wheels and 245/40 Mickey Thompsons I was using.

These tyres really hook up well and I think they will still work good even though they are smaller width.

I'm not that much into drag racing, I mainly bought these for when but when I do the Snowy 1000 its on an airport runway so no burnouts or slicks are allowed.

I've match ported the exhaust headers to the heads, there are Subarus running 9s with stock headers. None of the off the shelf 4 into 1 headers work very well on a Beetle, they are way too low.

Steve

[ricola]

Any pics with the new wheels on Steve? I do quite fancy a smaller set with some semi-slicks but would have to get the fitment right... The Vredesteins I've got stuck really well at Spa though so not sure how much I'd gain.

[Steve C]

Hi Rich

I will put them on in 2 weeks, I'm going to a VW drag event then, road trip this weekend to Canberra and the tune next week. I'm really interested to see the improvement in acceleration with smaller wheels.

With my 944 rear arms the 6 inch wheels fill the rear quiet nicely, not sure how the front will look.

Steve

[Steve C]

Hi

Just got back from the tuner.

Gone from 229 kW to 277 kW.

I've fitted Tomei Pon cams, Adaptronic 1280 ecu with E85 flex tune (it can run normal 98 RON unleaded), LS2 truck coils, larger up pipe, so its now making 277 kW, cant wait to drive it in anger, VW only 1/8 drag meet coming up in October.

The MAP sensor died on the dyno last night, so a 2 hour train trip home, borrowed a MAP sensor from my sons drift car, drove the tow Prado up with a trailer on and the tune was finished this morning.

I've done three road trips on E85 so far no worries getting it.

Steve

[Fiatdude]

377HP is very nice -- Well done -- My Ghia goes in for it's E85 tune at Westech in Mira Loma Oct 5th -- I don't believe I'll be able to match your number though LOL

The magic air pressure number for those Drag Radial is 10 to 10.5 psi -- That is where they really started working on my old Fiat (and other people's cars)

[Steve C]

Thanks for the tip, do they feel OK at high speeds with that little pressure?

Loving E85, motor runs 10-15 C cooler, thermo fan have hardly come on

[Fiatdude]

Yep no issues -- -- I would drive them on the freeways here at 70-75 mph with them down that low just because I was too lazy to fill them back up after racing LOL -- -- Don't know how they would work on a twisty course that low...... but there was defiantly a line there at that pressure where above it they would just spin and below they would hook, and everybody I know that has ran them has said the same thing

[Steve C]

Thanks Im only using them on straight line stuff, the Snowy Moutains 1000 is one car per run 1000 metre drag race, last year with only 229 kW I got up to 226 kph, this year I should go a bit quicker.

[Wally]

Nice progress Steve!
Do you have a RPM calibrated dyno sheet as well? I am always interested at what hp combo's have at 4000 rpm ;-)

(what turbo did you use again?)

[Steve C]

Hi Wally

Its a GTX30/76R, I will see if I can get an RPM dyno sheet, these runs were done in 4th gear.

I think this is about as far as I can take this combo now, its a unopened low klm motor, we probably could have pushed it more but I really think I have enough power for a while, I want to do a few track days now and get used to the power.

If I wanted to go further I could stoke it, do some headwork and fit stronger valve springs.

Steve

[Wally]

GTX3076R! Thats the new billet ball bearing from Garret, nice!
Its interesting as I use an equally size turbo from Borg Warner, but the cheaper plain bearing cast version ;-)
Power is at the rear wheels or converted to flyweel hp?

Tnx!

[Steve C]

Thats at the wheels, the turbo is one made to bolt onto a stock Subaru manifold

[Wally]

Originally Posted by Steve C

Thats at the wheels, the turbo is one made to bolt onto a stock Subaru manifold

Ah, is it a 'DOM3' (Blouch) turbo then maybe?
I had the old one of those.

277 kW ATW = about 433 hp flywheel (15%) at 1,65 bar boost.
Sounds much better haha!