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Thread: Rob T's 818R Build Thread

  1. #121
    Senior Member Rob T's Avatar
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    Off to Buttonwillow Saturday. Running 13CW. Running with Speed Ventures. I am a little nervous. It was one year ago that the motor died at this event, started on the trailer. Weather is supposed to be perfect: 40 - 65, sunny with light winds. Report to follow. New shift cables and some changes to the dry sump return line plumbing: scavenge pump - cooler - spintric - tank. Running some Hoosiers with good "tread", but probably 25 heat cycles. Just interested in getting a feel for the new shifter cables and assessing temps (oil and water) with the dry sump changes.

  2. #122
    Sgt.Gator's Avatar
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    Hoping for the best!
    "Good Judgement comes from Experience. Experience comes from Bad Judgement"
    Owner: Colonel Red Racing
    eBAy Store: http://stores.ebay.com/colonelredracing
    818R ICSCC SPM
    2005 Subaru STI Race Car ICSCC ST and SPM
    Palatov DP4 - ICSCC Sports Racer

  3. #123
    Tazio Nuvolari wannabe Scargo's Avatar
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    Yes, best of luck. Re-read all of your thread.
    Wish you would get rid of cooler/heat exchanger (totally unnecessary on a race engine) and filter on the engine and do a "real filter" remotely before the rest of the system. At least for my wet-sump system, that's how I have had it plumbed for a while. I use larger racing oil filters. I can make a K&N HP 3001 fit (in my STi) but am switching to medium-sized 2005.
    Again, best of luck and have fun. jealous. Had to stop in mid November!

  4. #124
    Senior Member Rob T's Avatar
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    Good day at Buttonwillow. Ran four 20 minute sessions. Lots of traffic, but still big fun. My Hoosiers have a lot of heat cycles on them so are not as grippy (technical term) as they once were. First session at about 40F....got to almost 60 by the end of the day. Water temps about 170F. AWIC ambient +15F. Oil, 150F....seems like the changes to flow are OK, but won't know for sure until I see some 100's in the summer. The 320 RWHP tune is amazing. I'll post some stats, video, etc. I did not get a good shot at real clean laps from the traffic, but got some more seat time in December....I'll count my blessings. We had some crazy 35 - 50 mph wind gusts for one of the sessions. I was on the long sweeper to the right and the big gust came from the passenger side....felt the the car slid sideways a few feet. I little dicey. I kept it on the track, today though. Lots of others went "farming" in the California dust. More to come.

  5. #125
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    Congrats on the successful day!
    Wayne Presley www.verycoolparts.com
    Xterminator 705 RWHP supercharged 4.6 DOHC with twin turbos

  6. #126
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    Awesome to hear of a successful track day in an 818. Thanks for sharing. I experienced some strong winds on my bike at Chuckwalla last January. Huge dust clouds with near zero visibility would occasionally appear around a corner. Disconcerting...

    Is that oil temp even warm enough? Pretty awesome that it held that low on a turbo car, even as cold as it was outside. Good work.

  7. #127
    Sgt.Gator's Avatar
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    That's good news Rob!
    I agree with Zach, you may want to tape over the oil cooler intakes a bit, your oil should be around 185 or more when running hard.
    "Good Judgement comes from Experience. Experience comes from Bad Judgement"
    Owner: Colonel Red Racing
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  8. #128
    Senior Member Rob T's Avatar
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    Agree on the oil temp. I was probably driving 6/10 or 7/10. I can tape off one or both of the intakes that go to the rear-mounted cooler on the cool days. The test this time out was if I could get cool enough. The time before, the spintric was before the cooler and I think was bypassing most of the oil back to the tank. Now all the oil/air from the scavenge pumps go to the heat exchanger first. The Setrab rep told me the cooler would be fine with air/oil mixed. From there it goes to the spintric back to the tank. It will be interesting to see what happens when the air is 105....If I can succeed there, I will no longer need the oil coolers up front and their associated lines. That would be nice. For now, they are clean, empty and capped off awaiting warmer weather.

    I wonder how "linear" oil temp will be with ambient temperature? All else being equal will a 50F increase in ambient temperature translate into a 50F increase in oil temp? Time will tell.

  9. #129
    Senior Member Rob T's Avatar
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    OK...Here is some data. Remember, I am still a "novice", but I appreciate pointers. Here is the video.

    https://youtu.be/oo6EwzkjqWs

  10. #130
    Senior Member Rob T's Avatar
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    Here is a picture of the data analysis for the best lap in the video above. Rob T 818R 12-16-17 Buttonwillow 13 CW Best Lap.jpg

  11. #131
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    Good to hear the changes are working.
    818R Build date 10/31/15

  12. #132
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    Great news Rob, as Gator pointed out you really want your oil temp up around 200*

    Be careful with ragged out tires they can bite.

  13. #133
    Senior Member Frank818's Avatar
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    Finally a successful day! When you never let go it always end up paying!
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

  14. #134
    Senior Member Rob T's Avatar
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    Here is some data I pulled from the best lap shown in the video above.....these are max values

    Acceleration (g) 0.57
    Deceleration (g) 0.92
    Right Lateral acceleration (g) 1.36
    Left Lateral acceleration (g) 1.44
    Max speed (mph) 103
    Max HP (calculated) 265
    Max Torque (calculated) 244
    Average HP (calculated) 64
    Average Torque (73)

    I saw 5 seconds in excess of 1.00 lateral in one of the turns. Also a couple seconds of 1.09g.

  15. #135
    Senior Member Frank818's Avatar
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    Awesome! I love those lateral-Gs, keep em coming.
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

  16. #136
    Senior Member Rob T's Avatar
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    Rained out.... I planned to do a track day at Buttonwillow today. It is raining this morning and the roads are wet. I have a flat bed trailer....and there is a chance of rain all day. It's not worth a wet track and getting the car really dirty. Bummer. Good news is there is another open day on Friday. Weather in the low sixties with bright sun and light winds. Stay tuned.

  17. #137
    Senior Member Rob T's Avatar
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    Got Friday cleared with my boss.....the plan is to head to Buttonwillow Friday.

  18. #138
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    I'm jelly, it won't stop raining here until May!

  19. #139
    Senior Member Canadian818's Avatar
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    Quote Originally Posted by RetroRacing View Post
    I'm jelly, it won't stop raining here until May!
    I’d take rain over the -40 it is here...good luck Friday!
    Adam _____ Instagram @PopesProjects____ YouTube Channel
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    Arrived 01/02/2014
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  20. #140
    Senior Member Rob T's Avatar
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    Thanks, I grew up in Wisconsin. CA is better. I can visit the snow when I want. I owned two snowblowers in my life. I have to admit, that it is tough to beat that quiet walk in the woods after a good snow, though.....

  21. #141
    Senior Member Rob T's Avatar
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    Good day at the track. Video to follow along with some stats when I get it all downloaded this weekend. Got the oil to 190 with one of the scoop vent lines disconnected. It was about 60F today. AWIC at 85. Coolant about 165. Good day. My transmission was about 250F above the axles and about 220 near the back, read on the top using an IR gun. Any concerns? Fluid was clear and looked good. No smell. 5MT.

  22. #142
    Senior Member Canadian818's Avatar
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    I wonder if a transmission cooler would be a good idea. If the case was 250F, wouldn’t the oil be at least that hot if not hotter?
    Adam _____ Instagram @PopesProjects____ YouTube Channel
    818 SRX - #91
    Arrived 01/02/2014
    First Start 10/31/2016
    First Drive 05/22/2017
    Registered 10/25/2019 BRAP818

  23. #143
    Senior Member Bob_n_Cincy's Avatar
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    Quote Originally Posted by Canadian818 View Post
    I wonder if a transmission cooler would be a good idea. If the case was 250F, wouldn’t the oil be at least that hot if not hotter?
    The case and the oil will be within a few degrees of each other.
    Bob
    818S #22 Candy Blue Frame, Front Gas Tank, 2.5L Turbo, Rear radiator, Shortened Transmission, Wookiee Compatible, Console mounted MR2 Shifter, Custom ECU panel, AWIC soon
    My Son Michael's Turbo ICE Build X22 http://thefactoryfiveforum.com/showt...rts-818S-Build
    My Electric Supercar Build X21 (on hold until winter) http://thefactoryfiveforum.com/showt...e-Build-Thread

  24. #144
    Senior Member Rob T's Avatar
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    Here is some data from Friday's track day. Video to follow. This was my best set of laps. I've also developed a form for tracking tire temps, etc. Feedback is always welcome.Session 2 Buttonwillow 14CW 1-12-18.jpg

  25. #145
    Senior Member Rob T's Avatar
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    Here is some temperature data, etc. Excel data sheet - 1-12-18 Buttonwillow 14CW Session 2.jpg

    If someone can tell me how to upload excel files, I'll do that.

  26. #146
    Senior Member Rob T's Avatar
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    Here is the video of my best three laps. These are the ones on the graphs above.

    https://youtu.be/g5MtaMindA0

  27. #147
    Senior Member EODTech87's Avatar
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    You could always use google drive to upload the excel document. Those tire temperatures seem really low. What kind of tires are you running?
    -Jason

  28. #148
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    Quote Originally Posted by Rob T View Post
    Here is some data from Friday's track day. Video to follow. This was my best set of laps. I've also developed a form for tracking tire temps, etc. Feedback is always welcome.Session 2 Buttonwillow 14CW 1-12-18.jpg

    You traction circle shows lots of straight line braking and not much trail braking to the apex.
    Wayne Presley www.verycoolparts.com
    Xterminator 705 RWHP supercharged 4.6 DOHC with twin turbos

  29. #149
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    Man, does anybody else watch these videos just to see the cars go from 60 to 100? So SWEEEEEEEET

  30. #150
    Senior Member Rob T's Avatar
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    Hoosier A7

    245 40 17 Rear
    225 40 17 Front

    They have a lot of heat cycles and the track was cold. Still a lot of meat on them, so I was saving the new set until I get a little more comfortable with the car.

  31. #151
    Senior Member Rob T's Avatar
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    Wayne: Thanks. I am heading to school early in February to exorcise some of my bad technique. I will be driving a formula Ford, so hopefully learn how to carry momentum better. Last time I ran this configuration was in April of 2016, soon after I got the car. My best lap that day was 2:28. I was 2:01 Friday. If only I could make those kind of leaps every time......Still have a lot to learn and I am working on braking much later. I noticed with the other cars that the 818 can brake much later and still be safe. Big fun

  32. #152
    Senior Member Rob T's Avatar
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    Here are some more performance stats from the TRAQMATE:
    Max Braking: 1.19g
    Max Acceleration: 0.75g
    Max Right Loading: 1.49g
    Max Left loading: 1.95g
    Max Speed: 119.55mph
    Max HP: 285
    Max Torque: 299

    These were all the maxes from the three laps above.

  33. #153
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    Nice driving Rob. Good to see everything worked well too.
    Going to a driving school is a good ideal, professional coaching is the most effective performance mod.

    How were you measuring your tire temps?
    The transmission case temperature is high enough that I would consider installing a temp sensor to see what the fluid temperature really is.
    Thanks for posting the info.
    818R Build date 10/31/15

  34. #154
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    What a great day for some driving.

  35. #155
    Senior Member Rob T's Avatar
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    I was measuring tire temp with a needle pyrometer with about 3/8" exposed. I measured the inside, middle and edge of the tire.

  36. #156
    Senior Member Rob T's Avatar
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    Off to Buttonwillow today for an afternoon track session. I'll let you know how it goes. I spent two days at Lucas Oil Racing school two weeks ago. Great School. Learned a lot. Have some new things to try today that should improve my driving.

  37. #157
    Senior Member Canadian818's Avatar
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    Good luck!
    Adam _____ Instagram @PopesProjects____ YouTube Channel
    818 SRX - #91
    Arrived 01/02/2014
    First Start 10/31/2016
    First Drive 05/22/2017
    Registered 10/25/2019 BRAP818

  38. #158
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    Looking forward to hearing how your day has gone with your new found knowledge.

  39. #159
    Senior Member Rob T's Avatar
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    Hi: it was a mixed day at Buttonwillow. I do not love the 27CW configuration. About 1.8 miles, seems like you are always turning right. My GPS system did not recognize the track so I didn't get lap times. I had an intermittent problem with the temperature gauge that really distracted me. Under acceleration, the temperature would drop out. I didn't know if it was a real problem or not, but being on a fresh rebuild, did not want to risk it. Car ran well, otherwise and I was able to practice some of my learnings when I was freaking out about the errant temperature. After the third session, I was able to verify it was a bad ground on the sensor, but by then, it was time to pack it up. I had to connect the second duct to the oil cooler. Hit 250 oil temp on the first session. With the second line hooked up, back to 190. It was 70F and perfect. I think this will work well.

    My company is transferring me to Roswell, NM, so this was my last track day in CA. I have already spoken to some Subaru scene folks in NM and found a track in Albuquerque that sounds awesome. I also found a tuner to help me switch my SD tune from sea level to 5,000 ft elevation. I start in Roswell a week from Monday. Lots going on right now.

  40. #160
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    The hot air balloon festival in Albuquerque is amazing.
    Well you get to experience a new location and venues. Moving is kinda a pain.

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