Just got back from a track day at Summit Points Raceway, WV where we were testing out our setup that we will be running at the season finale of the Redline Time Attack at Auto Club Speedway in Fontana, CA. It's been a rough road getting to this point, but hopefully within the next week or so, we should have the car finished for the long road trip to CA.

This past weekend some of the Ptuning crew were doing some testing with the Porche Club of America HPDE day at our local road race track at Summit Points raceway. With our luck, it rained part of the day on Saturday, but that did not prevent us from getting on the track to test out the new engine and tranny setup. We spent all of last week dynoing the car with the new GT35R turbo setup and twin wastegate on our ptuning turbo manifold. We also tested out the new tranny upgrade that we hope will hold together for the RTA event in two weeks.

This weekend didn't come and go without it's own set of problems. On Saturday, with the new found power, the car was hitting 160mph down the front straight--which is ridiculously fast for this track. At that speed, the brackets holding the front splitters to the frame of the car sheared off at the mounting points due to the amount of downforce being generated. A trip back to the shop Saturday night and a new mounting bracket was made along with a new splitter. Due to time constraints and lack of material, we were unable to create the mounting bracket that we would like to run for the Sunday session.

Sunday session was going great with the boost by gear working flawlessly (9psi - 26psi) with the car running ridiculous speeds around the track and bam, the mounting bracket for the splitter let go once again and a decision was made to remove the splitter all together for the remainder of the day. Our Ross Miller had to relearn his braking points and throttle control since the splitter made a huge difference in generating downforce to the front wheels. Without the splitter, there wasn't much of a margin for error around the turns. The remainder of the session on Sunday was going well until the car came into pitlane with a broken driver side axles (these were upgraded DDS axles that we've been running all season, so i guess it was just a matter of time before it couldn't handle any more abuse. On the upside, the tranny mod seemed to have held up all weekend.

Let's hope that we can get all these issues resolve before making the looooooong drive to Fontana, CA.

Here's the current Ptuning TA tC setup:

Short Block:
------------
Ptuning Spec-A sleeved '07 shortblock
Manley turbo tuff A-beam rods
CP 88.5mm 9:1 pistons
ACL race bearings
Ptuning head studs
Ptuning main studs
Balancer shaft eliminated
Factory MLS head gaskets
ATI Crank Damper
Lightened Factory Crank

Cyliner Head:
-------------
PTuning Spec-A cylinder head
Ptuning/Supertech ss intake valves +1mm
Ptuning/Supertech inconel exhaust valves +1mm
Ptuning/Supertech bronze/managese vavle guides
Supertech dual valve springs and Ti retainers
Supertech valve stem seals
Ptuning DLC-coated Cam followers
Ptuning spec-SS camshafts

Turbo system:
-------------
Ptuning TA turbo system
Ptuning turbo manifold
Dual tial wastegates
Garrett GT35R .82 A/R turbine housing with 4" compressor inlet
3" I/C piping with Blow-thru MAF
4" CAI intake
Custom racing intercooler
Custom racing radiator
Ptuning 3" v-band downpipe/s-pipe
Ptuning 3" v-band exhaust system

ECU/Fueling:
------------------------
Haltech Standalone ECU
Haltech Wideband O2 Controller
EBC Solenoid
Ptuning 900cc Injectors
Ptuning Spec-RS fuel system w/swirl pot

Dyno (Ptuning Dyno Dynamics):
-----------------------------
552.2 whp/502.7 tq @ 26psi (93 octane with WMI)

Tranny:
-------
Exedy Twin-plate clutch
e350 tranny
shim/sleeve kit
Cryo/REm coated gears
Custom forced-oiling tranny mod with oil cooler
DDS axles with Ptuning billet hubs (114.3x5)

MrC

Some pics:

 

WOW...

custom subframe support!?

Looks insane! what broke on the axle?

 

Nice power numbers especially on your dyno, looks great man... im shore that you and the rest of the guys a ptunning will figure something out and be ready for the event in CA.

 

ill be seen you guys there ill be helping out one of my friends that in the race for the time attack

 

the subframe crossmember was necessary to tuck the downpipe up as high as possible underneath the tranny not oil pan, in order to clear the large splitter.

We think the tripod on the inner cv joint broke. But haven't had a chance to pull the axle yet.

MrC

 

Yes, it's ridiculous power for a non-drag car. That's over 600+ whp on any other dyno. We're trying to push the limit of 93octane pump gas. If time and funding permits, after the race season is over, we will continue the dyno tuning with the current setup and see at what point, we'll have to resort to race fuel.

Hopefully, we'll see you there, stop by and introduce yourself that weekend.

MrC

 

what are you doing with the old splitter??? Is it still useable?

 

The old splitter was destroyed when it came off at 160mph on the straights.

MrC

 

Story of my LIFE!

 

HA! I caught you....sneaky ___!


LOL....anyhow. SICK tranny work. I will have to pick your brain some on that oil cooling for the manual tranny. I like. And glad the R.E.M treatment seems to be doing a good job. I will have to pick your brain on the pricing for that as well.


Hope for some West Coast domination.

 

Thanks anyways Mr.C haha I can't wait to work on the TA TC again! def watching this thread!

 

Interesting.

 

Wow, awesome work PTuning. Also, have you thought about running E85?? Not as up there as race fuel, but some good stuff nonetheless and cheaper too!

 

Mr. C, what exactly am I looking at here? Is this some kind of recirculating manual tranny oil cooler with a pump?

 

Not yet, but then again, e85 is not available at most race tracks and running around town in the middle of no where looking for e85 might be a problem when you need it to finish a race. For now pump gas is available everywhere and water meth can be carried in a few gallon bottle for a race weekend.

For the west coast, we'll probably mix 91 octane with 100octane unleaded available at the track since 93 octane is not readily available on the West Coast.

MrC

 

It's basically an external oil pump feeding a oil distribution block that strategically sprays oil to various gears on the tranny that are not normally bathe in oil, via oil jets. The oil is recirculated via the pump through the external oil coolers. Obviously, we can't eliminate gear failure but if we can prolong the life of the gears at least for the duration of the weekend or event then that's all we can expect out of the stock tranny. The tranny has already gone through a whole weekend without issues, but we'll have to cross our fingers and hope it will last one more weekend of racing since we do not have the time to build another one for the RTA finale.

If money was not an issue, we'd buy an aftermarket tranny and call it a day, but since that's not an option for us, we're forced to work with what we have.

MrC

 

how much would a set up like that for our trannys cost ?

 

for all your e85 needs and locations
e85fuel.com mix 105 with water meth forget 100 lol

 

Guys, the car was a BLAST this weekend. I was able to get some good testing in and man the car just flat out FLYS! I can spin the tires in 4th gear at well over 100mph!! its nuts! Passing cars is super easy and the car just keeps accelerating! The setup is still wonderful and i cannot wait to dominate on the west coast!!!!!!

We did have 2 splitters fail on us this weekend, at over 150mph... those were both code brown moments, as the car vibrates! EEK! But that means they are both working providing enough downforce! With the splitter off, the car didnt stop nearly as fast, and was not as responsive at all. Its amazing what it did!

The last session of the weekend we had some part of the axle fail. This caused major vibrations under acceleration. I took the car in and was sad that i never really got a good timed lap we'll just have to make up for it in fontana!

Wish us luck at fontana!!

 

i can imagine you spinning forth lol after seeing what happened at nashville in low boost...im surprised the car is the only thing rattleing ha