looking for another oil cooler

phunk · 06-15-2011, 06:43 PM

Quote:

Originally Posted by spearfish25

Look at the Setrab or Mocal lines. They offer a multitude of sizes. I don't know how many rows your cooler equates to, but I use a 25 row Setrab and only get to 250F after a full 20min session in 95F weather. Some guys prefer to go a step larger and use the 34 row. You'll definitely need a block off plate to stick in front of the cooler if you cant get your temps past 160F during DD.

by only 250 you are loosing a decent amount of power, ecu is going conservative on the tune by then. defineately want to keep it lower than that if you want all your power

boosted180 · 06-16-2011, 01:42 PM

Quote:

Originally Posted by phunk

by only 250 you are loosing a decent amount of power, ecu is going conservative on the tune by then. defineately want to keep it lower than that if you want all your power

yes, i know. the car felt like it was just "bogging" when it gets that hot. it was very noticable on the front straight (and on turn 2 and 8 where i was close to full throttle). i'm definitely not one of the fastest guys out there, but still was expecting/ hoping to run 1:40-1:41. with some personal coaching and NO OVERHEATING PROBLEMS, i'm sure high 1:30's is within reach.

so you guys really think getting a setrab would help and that they're a lot better than the tru-cools? part of the problem with the tru-cool is that it's too "tall" and about 25% of it is covered by the bumper support, not being exposed to cool air. i need something longer (from side to side), but not as tall.

cossie1600 · 06-16-2011, 02:43 PM

Quote:

Originally Posted by phunk

by only 250 you are loosing a decent amount of power, ecu is going conservative on the tune by then. defineately want to keep it lower than that if you want all your power

ecu doesnt pull timing based on oil temp.....

phunk · 06-16-2011, 03:30 PM

Quote:

Originally Posted by cossie1600

ecu doesnt pull timing based on oil temp.....

Call uprev and ask them about it. They told me last year but I can't remember the details. It was either at 200 or 220 it starts going conservative. I can't recall if it was timing or valve lift or both or what... But the results were a drop of 10-15hp pretty early and worse as it got hotter.

The power reduction is absolutely noticeable. It's why i initially asked about it, because the car is noticeable slower somewhere just past 200. I have to call uprev tomorrow anyway, I'll ask for the details since it's left my mind.

ChrisSlicks · 06-17-2011, 12:46 PM

Quote:

Originally Posted by phunk

Call uprev and ask them about it. They told me last year but I can't remember the details. It was either at 200 or 220 it starts going conservative. I can't recall if it was timing or valve lift or both or what... But the results were a drop of 10-15hp pretty early and worse as it got hotter.

The power reduction is absolutely noticeable. It's why i initially asked about it, because the car is noticeable slower somewhere just past 200. I have to call uprev tomorrow anyway, I'll ask for the details since it's left my mind.

The oil temp is largely irrelevant, however it is an indicator of what the engine block and head temperatures are at, as well as intake temperatures which will have an effect on combustion. So yes, there is a correlation but it is not direct.

The interesting thing I discovered was that on track straight-line speed was roughly the same after 20 mins as it was in the beginning of the session, however climbing hills under load there was a noticeable loss of power especially in the lower RPM band. Would be interested to see why the low RPM is effected more.

cossie1600 · 06-17-2011, 03:16 PM

Quote:

Originally Posted by ChrisSlicks

The oil temp is largely irrelevant, however it is an indicator of what the engine block and head temperatures are at, as well as intake temperatures which will have an effect on combustion. So yes, there is a correlation but it is not direct.

The interesting thing I discovered was that on track straight-line speed was roughly the same after 20 mins as it was in the beginning of the session, however climbing hills under load there was a noticeable loss of power especially in the lower RPM band. Would be interested to see why the low RPM is effected more.

detontation? knock sensor backing timing due to heat?

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