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08-14-2013, 12:34 PM | #55 |
Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007
Location: Ottawa
Posts: 479
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here is my datalogging?
outside air temperature was freakishly cold outside for this time of year (15deg c / 59deg F) (during this trip the coolant temp never went above 63, but like I said it was freakishly cold for an Ottawa Summer day) Driving water temp ( 61 deg c / 142 deg F) (85km/h - 53mph) (flat land / zero wind) Intake air temp(while moving) ( 21 deg c / 69 deg F) Intake air temp (stopped in traffic) (26 deg c / 79 deg F) Driving pic (it was freakishly cold out) In Light traffic (stopped for 1 minute, every 2 or 3 minutes) |
08-14-2013, 12:51 PM | #56 |
I think my "cold" coolant light goes off at 135°F so you aren't running much warmer than that.
I always thought that a performance T-stat was hotter (not colder). I know back in my dodge truck days, guys would put a 195°F T-stat in place of the 180. I honestly don't think it does much. |
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08-14-2013, 01:08 PM | #57 |
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^ Maybe, but if he eliminates that as a cause by swapping back to stock, we can move on to the next possibility. Or, that IS the problem.
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08-14-2013, 01:16 PM | #58 |
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I would say that IS likely the problem. 142 F is still well within the pre-warmed-up temperature range.
It was 55F here this morning when I drove my kids less than 2 miles to the camp bus and by the end of mile 1 (mostly downhill) I was at 181F.
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08-14-2013, 01:39 PM | #59 |
Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007
Location: Ottawa
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Next step = remove the colder thermostat - take some driving impressions and datalog the info.
It won't be 8 months (or never) ala "something big is coming", but it will have to wait till Friday night or the weekend because I'm busy tonight and tomorrow night. Then, after the thermostat, if there isn't an improvement - the next thing will be to remove the Corolla TB (swap back to Stock tb on the Tooter) / then I guess the next thing after that will be the Factory Manifold etc...etc...... Only good thing about this process is that now I've done each part so recently that they stick in memory and therefore are pretty quick and easy to swap. |
08-14-2013, 02:30 PM | #60 |
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That's the prime directive for modern vehicle engines. Super quick warm up to operating temperature so as to meet government mandated emissions requirements. In warm California, my green light goes out before I get to the end of the driveway.
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08-14-2013, 04:39 PM | #61 |
Sorry, I meant that increasing the temp probably doesn't help power. I actually agree that his car may be in a limp mode state given that he is probably running open loop and thus on a predetermined fuel map (really rich).
I am curious to see if changing the T-stat back fixes it. |
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08-15-2013, 09:24 AM | #62 | |
Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007
Location: Ottawa
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Quote:
Looks like I'm taking the day off work tomorrow to stay home and try to get to the bottom of this Will |
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08-20-2013, 08:14 AM | #63 | |
Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007
Location: Ottawa
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Quote:
Sure enough the temps came way up (seems so weird to see temps in the 180 deg F range consistently) The car behaves a bit better (the idle isn't as erratic) but otherwise its no faster or slower (feels the exact same) Next step is to swap the TB and then the intake manifold. Stay tuned. Will |
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08-20-2013, 11:46 AM | #64 |
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normal temps, same behavior -- thermostat eliminated as the cause.
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08-20-2013, 11:53 AM | #65 | |
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Quote:
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08-20-2013, 03:00 PM | #66 | ||
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Quote:
Quote:
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08-20-2013, 03:54 PM | #67 |
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08-26-2013, 06:16 PM | #68 |
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is it done yet?
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08-27-2013, 12:32 PM | #69 |
Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007
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No I've been swamped with other stuff and I've only driven the car twice in the last week and a half (let alone have time to work on it) Right now its just sitting in the garage (where it is most of the time) waiting for some more investigation work. Like I did with the Thermostat several weeks back..................I've taken this Friday off so that hopefully I can swap the Throttle body and then the Intake manifold and see whats going on. I'm also thinking of maybe getting the exact header that Tooter has, and also installing my exhaust (have full exhaust just waiting to be installed). That way when I go and Dyno it, I should have a pretty good comparison against Tooter because I'd have almost the identical setup at that point (plus lighter wheels and a pulley's) I'll of course update when I swap the T-Body etc..... |
08-27-2013, 08:40 PM | #70 | |
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Drives: 2012 Yaris L 2dr 5sp Join Date: Apr 2012
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Quote:
And if you're already running a DC header, I wouldn't waste any money on a Weapon R as they're both so short I don't believe that there is that much difference in performance between them. It's tough tracking down the problem with so many changes all done at the same time. And if for any reason you're not totally satisfied with the manifold, please don't hesitate to return it clean and undamaged for an immediate full refund of your purchase price. I just raised my prices and will simply bead blast it again and resell it. Greg |
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08-27-2013, 10:11 PM | #71 | |
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Quote:
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08-27-2013, 10:12 PM | #72 |
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two different cars, two different dynos, two different days. Even with identical mods, they won't be comparable except in the most general way.
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
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