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petri 08-27-2018 09:19 AM


To my eye, the white against the green really wakes it up and does something for it. Based on that body, its not really looking to be subdued.

I like how you've tied the white TAG graphic into the lines on the hood by using the same color palette.
This summer it took too much time to get car and driver (me) competitive again after these off years. We had some work with all suspension adjustments and alterations etc. My decision was to make driving experience first complete (which I did achieve during this last racing weekend) and now to really finish the details and outlook. I think also, that white will brighten the green and combine TH theme with some kind of graphic way. Design is not yet there, but coming.

Rear wing did turn out to be great this way, also shorter springs to front allowing more adjustment tolerance... Now green is already great to drive, I only have to adapt my driving back to oldtimer rhythm with plenty of turbo lag... :D

petri 08-30-2018 05:55 PM

Some shots from latest race... I am so happy that engine works now great with 0.6bar boost. My gears are totally wrong to Finland tracks as I have been using this car happily in Nürburgring Nordschleife and Spa Francorchamps... I am considering total rebuild of my 930 LSD transmission to change all gears to close ratio. In this track I pretty much drive with second gear and use 3 times 3rd gear...
If making following changes:
- much longer 1st gear it would be great for curves around 100-120km/h exit,
- shortening 2nd down to 150km/h (now 178km/h in 7500rpm) and
- shortening 3rd down to 208kim/h (now 238km/h in 7500rpm) and
- shortening 4th gear down to 300km /h (now 343km/h in 7500rpm) .

This way rpm difference between gears would be approximately around 1600_1580_1750, as now they are appr. 2650_2250_2350 or more.
My boost starts from 4000rpm, so I should be able to shift sometimes up around 6000rpm (usually 6500-6800rpm to shift) and not to drop under boost, and only occasionally push around 7500rpm before shift or brake... I would be seconds faster in Finland tracks in each lap.

Also going to change the 0.6 bar boost spring to 1.2bar spring because my engine setup easily allows it. so I could get my missed hp back.

smurfbus 08-31-2018 03:24 AM

My refurbished spare has shorter ratios and was too short for my usage so I bought a stock box.

Specs for the short ratio box in the pic (if it shows): It's available if needed.

1st @ 2.25:1 2nd @ 1.44:1 @3rd: 1.04:1 4th @ .79:1 LSD 4.22:1 (9.38)

pic here or not

petri 08-31-2018 05:59 AM


Specs for the short ratio box in the pic (if it shows): It's available if needed.

1st @ 2.25:1 2nd @ 1.44:1 @3rd: 1.04:1 4th @ .79:1 LSD 4.22:1 (9.38)
I saw your chart. Your second and third gear looks perfect match to me. If I would buy your transmission, I only should change first and fourth to longer... Drop me some private of possible pricing of your transmission and what else has been overhauled :D. You waked up my interest...

petri 09-14-2018 08:19 AM

Some nice shots of my season 2018 racing by RJWFILMS

petri 10-04-2018 12:32 PM

Couple vids someone took from last season:

Short tourist race taxi shot:

...and some Porsche Club Finland 2018 event shoot: beginning and from 1:20 of green RUF bastard...

petri 12-09-2018 03:43 AM

Started to prepare installation of my old grey -77 911 powerline after complete rebuild back to the car: engine nicely prepared with 3,6 RSR cams heavy valve springs and plenty of good stuff. I replaced original 964 filter air door system with MAF and cone filter setup... I am going to build ram air shileds around it as I am running now with 993 GT2 style rear lid with air scoops. I am also considering douple cone filter arrangement with Y tubing... But getting there... :D

petri 01-28-2019 12:56 PM

Some photoshop sketching for the becoming summer racing colors:

petri 04-19-2019 04:10 AM | partners in architecture is hosting the traditional “Petri's driving day” for our best friends 12th time.

If some of you is or visiting Scandinavia and Finland in May, you might join:

"We invite You to participate a pleasant driveful Friday with us in Ahvenisto Motor Circuit. You arrive with your car, your motor bike or you can bring your classic or race car or you just come to spend time with nice people, there is an excellent selection of motor sport oriented experiences available. Driving in the motor circuit is allowed, but not obligatory. As it has been our tradition, there is enough separated track time available for different groups from beginner street cars to different race cars.

Inform us of your arrival, we are expecting about 100 cars arriving during the day.

More information you can ask: tai 050 5267 707 / Petri. tai 040 754 0962 / Risto.

Welcome by

petri 04-19-2019 04:21 AM

Some adjustment still for the season for some Porsches... :D

petri 04-27-2019 08:35 PM

Grey got its 964 3.6L RSRish engine back in:

MAF package needs to be shortened to fit with rear lid hinge...
And exhaust must be reworked with racing exhaust manifolds... But getting there. :D

petri 05-02-2019 01:09 AM

Building prototype exhaust for dimensions... first straight mock up and then with its dimensioning real exhaust with some noise reduction...

petri 05-21-2019 07:01 AM

Our driving day was great again with a great deal of friends with their drives :D.

petri 07-10-2019 11:45 PM

911 Rsr exhaust in progress...

Garen 07-13-2019 11:44 AM


Originally Posted by petri (Post 10334195)
Some photoshop sketching for the becoming summer racing colors:

Cool graphics!

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