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Old 09-25-2018, 05:51 PM   #126
Sgt.Gator
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At The Ridge race I had a problem: The vac line from the intake manifold to the BOV popped of the intake manifold. It's an aftermarket silicone hose that is much slicker than an oem rubber hose. It's done this before but apparently the addition of a zip tie wasn't enough.

So with no BOV opening the IC silicone hose connector at the throttle body popped off. One lap into the race and no boost!

I pulled into the hot pit and my crew found the BOV hose off and re-installed it. They didn't see the IC connector had slipped of the bottom of the throttle body. Back on the track...still no boost.

Back into the hot pit and they looked all over engine but didn't spot the problem. I went back out and ran 99% of the race with natural aspiration. This is only possible with a speed density tune. A hybrid or MAF tune and you're engine comes to a quick stop and won't start. The same thing happened to me in the Silver Eagle, in the same race, in the same raining conditions a few years ago. Only it had a hybrid tune and so that was that.

The "good" part was it was pouring down rain, which helps equalize the low powered cars with the high powered ones. However if I'd been running with full boost I probably would have taken second or possibly won the race. I ended up 4th in our class.

If you've never raced wheel to wheel in the rain the opening lap Turn 1 is a moment you'll never forget. Midpack, you know there are 10 cars in front of you less than 1 car length apart, and 10 more behind you the same. As you hit 80 mph on the front straight they all disappear and you pray everyone in front of you is hitting the brake zone/turn in at the right place because the best you can do is follow taillights. Here's the opening lap last Saturday at the The Ridge ICSCC One hour Enduro. And the odd thing is I love racing in the rain. I wish 50% of our races were in a downpour!:


The BOV vac line now has a fuel injection clamp on it!

Last race of the season is the weekend at Portland International Raceway, the Cascade 2-4-8 Hour Enduro race. I'm pitting with the Retro Racing Team. The Blue Sake bomber is entered in the 2 Hour and the 4 Hour Enduros. Retro drivers will drive for part of the two and four hour races. Then I'll crew on their 8 hour entry.

If you'd like to come out and help we can probably use some spare crew hands. PM if you'd like to be on the pit crew for the Blue Sake Bomber and Retro's new Honda K powered Miata.
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Old 09-26-2018, 12:20 PM   #127
Patrick Olsen
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Saw your video posted on the Track Subarus FB group - pretty crazy at the start!

So what was the resolution on the blown head gasket from a couple/few months back?
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Old 09-27-2018, 01:26 PM   #128
Sgt.Gator
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Quote:
Originally Posted by Patrick Olsen View Post
Saw your video posted on the Track Subarus FB group - pretty crazy at the start!

So what was the resolution on the blown head gasket from a couple/few months back?
It wasn't blown! We did the CO2 sniffer test, nothing. We did compression and leakdown tests, nothing. I think the bubbling in the coolant overflow tank must have been a hotspot with air that was finally working it's way out. We flushed the coolant and this time used my UView 550000 Airlift tool to fill it. No coolant issues anymore.

I've been thru so many engines in the last 4 years that any sign of something not being right I freak out. I missed two races which has cost me the Enduro Championship for 2018. Mathematically I could still win the championship this Saturday at PIR but the current leader would have to no show or drop out right away for me to win. He's in the orange Viper right in front of me in the rain video above. If you aren't busy Saturday come to Portland International and watch the only LeMans style start in the NW. The start is at 10:45, there is no admission charge.

On the subject of diff coolers...my Legacy GT race car that was built by Phoenix Performance for the GrandAm series had AN lines - cooler/pump - plumbed into the stock diff cover. I've not added a cooler to the STI because I've never seen the oem diff temp warning light come on, but I've thought many times about adding an aftermarket diff cover with greater capacity and ready with extra ports for cooler lines. After watching this series of videos testing aftermarket diff covers I think I'll stick with the oem cover and just plumb into it.

If you're thinking of buying an aftermarket diff cover you should watch the entire series of test videos.

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Old 09-27-2018, 04:05 PM   #129
Homemade WRX
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Yeah, I watched the series. I like Gale Banks and his simple engineering methodology to testing and validating.
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Old 10-04-2018, 09:26 PM   #130
Sgt.Gator
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The season finale for the NWMECS Enduro Championship. CRR and Retro Racing came together to take 1st Pace in the 4 Hour Enduro and 2nd Place in the 2 Hour Enduro. It was great racing at Portland International Raceway. Big thanks to our Sponsor, Subaru of Bend. Your continuing support and shop work has made it possible to be competitive in endurance racing with our STI. And thanks also to our tuner, Surgeline.

We would have taken first or second in the 8 hour if a suspension bolt hadn't fallen out.

Looking at the Vbox video/data is the best driver improvement tool ever. Jeff and Chris, both multiple ICSCC Championship winners with thousands of laps at PIR, were 3 seconds a lap faster than me. What makes it so great is taking all the variables out when trying to learn why. Same car, same tires, same weather, same track. Within 5 minutes of looking at our video/data comparisons I know exactly what I need to do to be faster. I'll bet if I went back out on the track today I would cut 2 of those 3 seconds out within 5 laps.

Chris was in the car on the last lap of the 4 hour Enduro when things went badly. He'd just gone into the chicane when he lost all power and the car spun out. A turn worker came over and told him the right rear wheel was cocked out at a 30 degree angle.

Towed in on a trailer. We quickly determined the upper suspension bolt tying the coilover to the hub had fallen out. We found a bolt and put it back together with an eyeball camber setting.

But still no go forward. Further checking found the left rear CV axle had sheared off inside the outer CV boot. We called every auto parts store and dealer in the Portland metro area, no one had an STI CV axle. So we welded the broken one back together. That lasted 6-7 laps, which was 5-6 more than we expected. It was too bad, we were doing great in the 8 hour up to that point.

I'm not complaining, I'll take a First and Second anytime!

The good news: The engine ran great. There no issues with oil pressure, oil temp, coolant temp, or tranny temp. And PIR is a 75% of the time WOT track.

My only regret is not buying about 30 of these Continental Race Slicks while I had the chance on the close out sale. I got 8 of them and they work great.

It's been a great season. I have a couple of more track days left at ORP to do some testing on the FF 818R and the Palatov before the cars go into hibernation.






The missing Bolt!

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