blown 944

It's all bolt on over here Pat. Kinda like my "Porschevrobishi" engine I'm building now. :-)

333pg333

333pg333

So after a very long 2 weeks which involved 3 long trips to the dyno late into the night. Heat issues, wastegate issues, rogue sync signal issues...we finally got an ok first tune. Picked it up yesterday morning from the dyno and went straight to the track which was chock full of cars practicing for the NSW Motor Race Champs Rnd1. They chucked us in with Improved Prods. So the builder goes out in the car 1st as I felt he would be more objective than me. Stoked to see it finally getting back on the track first time since 2010...not so stoked to see him pull into the pits after one lap and saying there's some ign cuttout going on. So we go back to our shed and plug in the laptop. Damn...the rogue sync error is back. It's appearing all the way from idle up through the range. At 540 btdc. So they check the gap on both cam and crank sensor. Disconnect the knockbox. Swap ECU's...still there. Damn!! They keep playing around with filters hoping to disappear it. Not having a lot of luck. When 2 guys who have worked on literally 1000's of motors look at you and say "Hmm, never seen this before" it's a bit disconcerting. Checked out the stock cam wheel to see if there's anything that could be creating a reason for this extra signal trigger. Can't see anything at all. Could a blind bolt or dowel behind it have become magnetised over years of having a distributor in front of it?

So they've done what they can and he says, you may as well go out and see what happens. So in I jumped and hastily made my way down to pit lane. Sitting there I was feeling pretty excited...but also fully expecting to be back in next lap after the ign cut persisted. So off we go. All sorts of cars in this group. Commodore V8s, RX7s, Nissan Silvias, Civics, Old Holden HQs, Toyota Sprinters...So I go down into T2 car seems fine. Out of 2 into 3..still fine..down the hill. Seems kinda nice. Feels much lighter and directional. Lots of weight has come out of it and stiffness gone in. Around 4 and 5. Yep, I'm liking my 'new' car already. Hmm, what happened to T6? Somebody took it. Around 7 and up Corporate Hill. Car feels responsive and quite toey. Down the hill and into the hairpin. Plenty of turn in. Great! Up the hill give it a squirt. No sign of ign cut. Yay! Into 10-11-12...line up a Silvia and plant it. Whooshka...past him pretty easily. Nice. Down the main straight. Motor is revving nicely. Quite a bit of chop though...front to rear. Tippy toeing around T1 and into 2 again. Toss some salad while searching for the right gear and proceed around the track for another 1.5 laps before Red flag out. Everyone back into the pits. Damn again. Some one had put themselves off right at the top of T2 and onto the Grass. Seemed safe and easy to move him...but it took forever. By the time they finally waved us back out we did one more outlap and they flagged the session. Arghhh!!

So all in all, the car felt great. Would have loved to do more laps but it was late in the day and I let Paul (the builder/racer) out in the next session. He concurred with me that the suspension was way out of kilter. The back end wanted to step out too easily and the porpoising was bad. He still managed a 1:43.8 which on old tyres was pretty good all things considered. Here's the most recent dyno chart. We will replace the wastegate and go back to the dyno. He will screw more boost and ign into it. Not sure if they've actually cured the sync error or just fooled it. That's what filtering is for but I'd rather know what's causing it too.

Here's the only film we got. This is basically with a stock internal motor (except for bigger cam). This is Paul driving, not me.

74goldtarga

Congratulations on getting it running and getting in some laps at the track - you are going to have some fun now I think. That 327 on "the heartbreaker" I think you called it, would probably be a lot more on some other dynos so certainly a good start. What does your car weigh now?

333pg333

Thanks.
Actually this dyno is the same brand of dyno but it was done at another shop. Because the 1st shop didn't do it in Shootout mode or stipulate ramp details, we can't compare...but in general I believe these dynos read lower than some others. Am hopeful that with new w/gate and sync error cured (fingers crossed) that we can put a little more boost into it and get a bit more out of it. The suspension needs to be setup half decently too. Add the wider new slicks, traction control and the wing and I think there is another couple of seconds to come out of the car.

ehall

Glad to see it back on track!

FrenchToast

Nice! You must be very proud and excited!

Nice video! The camera distortion - is that because you are traveling close to light speed? Or have you "gone to plaid"? (from the movie Spaceballs). John Candy is great!

Those trailer ramps look like the car walks a tightrope getting on and off.

To all: be safe, have a good evening!

Cheers

333pg333

Thanks guys.

Ha, that is really weird. YouTube said I had a shaky video and did I want it to be fixed. I clicked yes and now it does look like we're passing through a Space/Time continuum. I'll have to try and 'unfix' it.

NB: Ok you can undo the 'fixing' it seems. I sort of got fixated watching how all the car was distorting with that image. Might upload a copy and have both versions.

Paulyy

wow, wheres the competition hahah? Did i see a White EF Ford Falcon? LOL

333pg333

There were all sorts of cars out there Paulyy. Jag XJ6, Triumph Dolomite even a really nicely prepared Ford Escort with a mid mounted Chev V8. Crazy.

Cyberpunky

Great to see your car in action after all the hard yards getting it to this point Patrick. Going to be a hell of a weapon when you get it dialled in mate

333pg333

Thanks mate. Now I can't stop thinking about that dialing in process. Bring on the next day!

Thom

Great stuff Patrick.
After this long and painful journey I imagine how good you must feel now that you are able to drive your car again.

What I can say from the video is that the car looks much swifter than on older videos. It looks like you will easily improve your lap times.

Enjoy!

JohnKoaWood

Well then, that definitely SOUNDS the business!

Very nice.. not bad when you get to finally start sorting out the suspension...

disasterman

Sounds excellent. Without digging through the entire thread what is your shock and spring setup?