A long time coming, Rob's 4motion turbo build!

[WhO]

Thanks mate! If your ever in Adelaide let me know and i'll take you for a spin and run you through the details of the build in more depth

[WhO]

So it was on the dyno today. All ran pretty well fuel mixtures were nicely in check, bit rich with a few wavey bits in the curve but for the most part good. We were off to a slow start, at first the car would only run 10psi of boost. After much screwing around and one accidentally eaten vacuum hose we figured out the sticker on the manual boost controller which pointed to the wastegate was actually around the wrong way thus after swapping it around more boost could be had.

First run was at 10.5psi and the car made around 196fwkw. Boost was dialed up to 12psi and power jumped up to around 220fwkw However any further increases in boost made no power with the power curve flat lining so to speak at the same point each time.

Following this i was pretty sure that there was a flow restriction somewhere either intake or exhaust. Since i was pretty confident with the intake i was pretty sure that my 2.5" rear section from the cat back of the exhaust was causing the hangup. Unfortunately this was the case and no matter what boost the rear section of the exhaust ended up not letting the car make more than around 220fwkw

As i wanted to make sure this was the case i took the exhaust off and gave it a few more runs. It went well. Immediately wastegate boost pressure lifted to 12.5 psi and made 226.4 kw and with the boost wound up it made 264.8kw at 17psi Unfortunately as we couldn't put a lambada probe into the dump pipe we couldn't check fuel mixtures thus my mechanic wasn't keen to run it any higher just incase mixtures weren't ok.

Anyway so far so good. I'm getting my mechanic to make a new rear section of the exhaust for me next week as i simply cant be bothered to make any more exhaust work myself.

All in all i'm pretty happy, disappointed that i couldnt make more power with the exhaust but happy that it quite easily cracks the 200 mark at just over 10psi and should hopefully crack 300fwkw around 20psi.

Stay tuned for more! I'll attach dyno sheets shortly

Cheers,
Rob

[WhO]

Graphs of power vs boost

12.5 psi run - cant remember if exhaust was on or not here, i dont think it was


17 psi run - no exhaust

[WhO]

Just installed the Super pro stage 2 dogbone main bushing. So much better ,much much less engine flex and to be honest there's hardly any extra vibration, probably helped lots being a vr6 as they're smoother than the 4 cyl's.

[McDub]

First run was at 10.5psi and the car made around 196fwkw. Boost was dialed up to 12psi and power jumped up to 226.4fwkw However any further increases in boost made no power with the power curve flat lining so to speak at the same point each time around 226kw.

Following this i was pretty sure that there was a flow restriction somewhere either intake or exhaust. Since i was pretty confident with the intake i was pretty sure that my 2.5" rear section from the cat back of the exhaust was causing the hangup. Unfortunately this was the case and no matter what boost the rear section of the exhaust ended up not letting the car make more than 226kw

As i wanted to make sure this was the case i took the exhaust off and gave it a few more runs. It went well, made 264.8kw at 17psi Unfortunately as we couldn't put a lambada probe into the dump pipe we couldn't check fuel mixtures thus my mechanic wasn't keen to run it any higher just incase mixtures weren't ok.

damn that's a lot of power, insane
congrats

what motor has your bora got again? 2.8 vr6 is it?

[GoLfMan]

was it just a two wheel dyno (fwkw?) Great results dude, would be a beast to drive!!!

[WhO]

Yup its the 2.8 vr6. Its never enough power currently runing ~200kw at the wheels on the street and it feels too slow!! Need bigger exhaust so i can run more boost! Damnn the power curse, i've had too many quick cars to be happy with just 200kw! Call me greedy lol

[WhO]

was it just a two wheel dyno (fwkw?) Great results dude, would be a beast to drive!!!

Yeh it was a two wheel dyno. Wish i could've gotten on a 4wd dyno but my mechanic mate has a 2wd one so alas the fuse was pulled!

Plus last time i ran on a 4wd dyno the awd cracked the ****s! Even in the VW service manual it suggests to put the car into 2wd mode for use on rolling roads so i guess it's better this way. Not quite as accurate power wise tho...

[WhO]

[pansy]

Wow, big congrats to you mate. My envy levels have gone through the roof following this thread. Just makes me see that it isn't impossible to do this without a blank cheque. Again congrats and good luck with the quest for more POWER.

[RolfGolf]

Sounds awesome and stealth piping looks great too

[schoona]

Congrats mate, enjoy the fury!!!!

[glf455]

That sounds fierce! Good work as well, came together so well!

[WhO]

Dag nammit, just finished up wiring up and getting installed my indigo new south boost and oil pressure gauges on a column pod i got from ECS only to find that the boost gauge they've supplied me is not the right one! They gave me a spectrum multi colour one which doesnt match the factory gauges at all unlike the oil pressure one which is an indigo model and thus is perfect. Took another hour just then trying different resistor combinations (supplied) and colour settings to no avail, they just dont match the oil pressure gauge / factory gauges

Worst thing is i went to great effort to have all the wiring kept neat as possible and have buggered that all up when the looms had to be unwapped to be made to get at the wiring to play around with resistors and capacitors to stop the gauge blinking and try and get it the right colour.

Just e-mailed ECS to see how we can go about getting me the right gauge... after about 4 or so hours being a perfectionist making sure everything was installed to look factory i gotta say i'm dissappointed

[mk3pete]

wind that boost up matey these things can take 500 hp before you even have to touch the internals