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JCviggen
 
Volvo T-5R returns to the Ring after engine rebuild

Early this year I broke my engine on the 'ring. More specifically a number of circumstances contributed to the conrod bearings on #2 and #3 to get oil starved and torn up. They then ruined the crank and allowed the pistons to hit the head. It was pretty messy.

Took a few months to get it back together but I got the head flowed, put in forged conrods and fitted a GT2871R T3 instead of the journal bearing T3/T4 I was running.

I got it dyno'd a few weeks ago on a load dyno with proper cooling. I had already been on a dynojet with no airflow worth mentioning (365whp) but the curves looked very nice I thought. A flat power curve was what I was going for

412 BHP, torque is in Nm, works out to around 400 lb-ft max.


Anyway back to the Ring, they had opened up the monday at short notice which meant all the brits had gone home already. This left the place nearly deserted, in beautiful autumn weather probably one of the nicest drives of the year.

Only downside was that the track was very cold (close to freezing) and rather dusty. My R888's did not have the grip I was used to and the car was very understeered (well, more than usual). Which led to me running wide in some corners I've never run wide in before

To make things worse on the last lap my crankcase ventilation tube that is attached to my intake pipe came off, though I only realised that later. Oily crap all over my engine bay. But on track it translated in occasional very lean conditions (leak was post MAF) and stumbling/backfiring. Simply lifting the throttle and getting back on usually cured the problem and made AFR settle back around 12:1. But it wasn't very elegant as you can see in the video.

I also had to keep 1 eye on the AFR gauge which isn't in the most visible spot so I found myself not exactly where I'd want to be on the track a few times

I logged GPS speeds with racechrono and a 5 Hz GPS receiver from Qstarz, to give you guys an idea of the speeds and hills on the track.

The BTG lap time was 8:04.7 sec which was better than expected I thought considering the things "wrong" during this lap.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.


I should add I reduced boost to 20psi (as low as it would go) lowering the power to approx. 360 bhp.

I guess it is capable of sub 8 minutes, but finding the track warmer with the same amount of traffic is going to be difficult.
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Old 10-21-2009, 04:37 AM JCviggen is offline  
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Grazehell
 
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that's a very good looking power band you have there!!!
Old 10-21-2009, 04:43 AM Grazehell is offline  
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yoda634
my title sucks i need a new one.
 
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I hate Volvos....but goddamn.

Did you build the engine yourself, or did you get it done somewhere? Is that the 20V 5 cyl? Isn't that thing FWD, too?

I swear, if/when I ever make it to Europe, my primary concern will be to convince you to give me a ride around the ring in that boxy beast of yours!
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Old 10-21-2009, 05:45 AM yoda634 is offline  
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[H]ard|On
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That's a beastly volvo. Good luck getting the AFRs right, sounds like a fun project.
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Old 10-21-2009, 06:02 AM [H]ard|On is offline  
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u467
 
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Originally Posted by JCviggen View Post
I should add I reduced boost to 20psi (as low as it would go) lowering the power to approx. 360 bhp.

son of a bitch.
Old 10-21-2009, 08:01 AM u467 is offline  
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Bluesultan
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the fact that you get to run your car on the Ring is pretty awesome...your car is not that bad either!
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Old 10-21-2009, 08:26 AM Bluesultan is offline  
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Fri'Chickenisha
 
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I like your carbon fiber dash.
Old 10-21-2009, 08:33 AM Fri'Chickenisha is offline  
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Stealthmode
needs moar stealhmode
 
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Quote:
Originally Posted by Bluesultan View Post
the fact that you get to run your car on the Ring is pretty awesome...your car is not that bad either!

...8 minutes on the ring..in a volvo. Damn Straight!
Old 10-21-2009, 01:11 PM Stealthmode is offline  
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Fiah
Sinds ik als transseksuele prostituee bezig ben, heb ik mezelf eindelijk leren accepteren. PM me voo
 
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Do you live near Haaksbergen? I ought to come by and have you fix my bike
Old 10-21-2009, 01:20 PM Fiah is offline  
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JCviggen
 
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Originally Posted by yoda634 View Post
I hate Volvos....but goddamn.

Did you build the engine yourself, or did you get it done somewhere? Is that the 20V 5 cyl? Isn't that thing FWD, too?

I swear, if/when I ever make it to Europe, my primary concern will be to convince you to give me a ride around the ring in that boxy beast of yours!

Built it with a friend of mine, mostly stock parts aside from the conrods. It's a 2.3L 5-cyl 20V turbo.

If you're around here some time and the weather allows, sure
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Old 10-21-2009, 01:20 PM JCviggen is offline  
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Dongboy
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favorite volvo evar
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Old 10-21-2009, 01:48 PM Dongboy is offline  
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JCviggen
 
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Do you live near Haaksbergen? I ought to come by and have you fix my bike

No it was 180 bloody miles for me

But a friend of mine lives there
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Old 10-21-2009, 02:04 PM JCviggen is offline  
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Fiah
Sinds ik als transseksuele prostituee bezig ben, heb ik mezelf eindelijk leren accepteren. PM me voo
 
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Quote:
Originally Posted by JCviggen View Post
No it was 180 bloody miles for me

But a friend of mine lives there

ah makes sense

I'm not used to seeing Dutch on this forum
Old 10-21-2009, 02:09 PM Fiah is offline  
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Typhoon43
 
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Congrats on getting her back together. So how is 20 pounds the least boost you can run? You seriously have a 20 pound wastegate spring? If so, you sir are my new hero.

Nice run!
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Old 10-21-2009, 02:20 PM Typhoon43 is offline  
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JCviggen
 
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Originally Posted by typhoon43 View Post
Congrats on getting her back together. So how is 20 pounds the least boost you can run? You seriously have a 20 pound wastegate spring? If so, you sir are my new hero.

Nice run!


I'm actually running the softest spring available in the forge actuator. 7 psi.
Trouble is that the wastegate hole on the 5-bolt exhaust housing is a tad on the small side and it boost creeps from 5K rpm onwards. Using an ATP UIWG.

Since it's not too far off my target boost and I really, really didn't feel like taking the turbo off again (and apart) I've decided to leave it like this for the time being.

"full power" mode is 25psi.
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Old 10-21-2009, 02:23 PM JCviggen is offline  
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