Engine Heat-Soaking issue
#1
Safety Car
Thread Starter
Engine Heat-Soaking issue
Anyone have suggests on how to better cool my motor without doing crazy custom work? I've noticed a huge amount of power/torque loss after the cars been running for even 15 minutes. Engine's hot/heat-soaked...
Do we have anything out there for n/a motors?
...Gaskets?
Do we have anything out there for n/a motors?
...Gaskets?
#2
Team Owner
CAI, gaskets, and blocking off coolant to the TB.
What I would try first is a few gallons of 100 unleaded to see if the issue still exists. Regardless, the mods listed above would help but it may be detonation and not just heat soak.
What I would try first is a few gallons of 100 unleaded to see if the issue still exists. Regardless, the mods listed above would help but it may be detonation and not just heat soak.
#3
Uses turn signals in my
What is your reasoning behind the few gallons of 100 octane unleaded? Just curious.
#4
Safety Car
Thread Starter
#5
Safety Car
Thread Starter
i'm thinking about getting some gaskets...not quite sure as of yet
maybe i'm just running the car too hard? iono...despite, its been an issue i've had for quite some time...i thought a mod would fix it
maybe i'm just running the car too hard? iono...despite, its been an issue i've had for quite some time...i thought a mod would fix it
#6
Team Owner
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#8
Team Owner
If you don't want to run 100 unleaded, pick up a couple gallons of xylene or tolulene at your local hardware store or paint store and mix it with at least a half tank of gas. That will put you somewhere near 96 octane.
What to expect is nothing. The car should get just a little slower as it warms up but should retain most of it's power. If the problem still exists, you can be confident that it's only power you're losing and you're not hurting the engine.
Octane boosters cost nearly as much as a gallon of tolulene and tolulene is the main ingredient. The boosters only boost in points as in 91 octane to 91.7 octane.
What to expect is nothing. The car should get just a little slower as it warms up but should retain most of it's power. If the problem still exists, you can be confident that it's only power you're losing and you're not hurting the engine.
Octane boosters cost nearly as much as a gallon of tolulene and tolulene is the main ingredient. The boosters only boost in points as in 91 octane to 91.7 octane.
#10
Safety Car
Thread Starter
#11
Suzuka Master
Insulate your CAI, mine stays very cool
#14
Safety Car
Thread Starter
i did indeed have a transmission failure...but could that really be a problem? -_-
#15
05' AT SSM
If you have a CEL get it checked out first thing.
Cooling, why not be the first to do a cowl hood, best way to dissipate heat.
So your butt dyno tells you your losing HP after 15 minutes of driving? If its really an issue get some proper diagnostics haha
Cooling, why not be the first to do a cowl hood, best way to dissipate heat.
So your butt dyno tells you your losing HP after 15 minutes of driving? If its really an issue get some proper diagnostics haha
#16
Three Wheelin'
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maybe alot of wear and tear
#17
Green Machine
iTrader: (3)
I'm kind of having the same problem as the OP. When the temp outside when up to 80's, my car felt sluggish after a few minutes of driving. Once the temp cools down at night, the pep comes back as good as ever. I've got all the mods mention to help cool things down. I do have over 90k, so that maybe an issue. Does that mean I need to do the 105k service sooner?
That's interesting, what do I need to look for?
That's interesting, what do I need to look for?
#19
94 DC4 RS LSV/Turbo
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gold foil on the intake... and modify the fan switch to come on sooner... they sell a fan switch believe all honda's use the same
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
#20
Team Owner
gold foil on the intake... and modify the fan switch to come on sooner... they sell a fan switch believe all honda's use the same
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
#23
Safety Car
Thread Starter
good point...she has 80,100 but she's still pushing hard! tonight...the fun lasted past 15 minutes. it's on and off...and i promise you it isn't just in my head! it's noticeable...but then again, it was a lot cooler out tonight...
#24
Safety Car
Thread Starter
all great responses...i think i'll be doing the gold foiling (where exactly do you get that) but my main concern is whether or not the car SHOULD be having the above symptoms. obviously, when it gets hotter out and more humid, less air blah blah blah, yeah...but after 15 minutes of driving, i really don't feel like the engine should getting be so heat-soaked.
excelerate, i'll hit you up for some gaskets for sure.
excelerate, i'll hit you up for some gaskets for sure.
#25
In addition to what's been said, get a lower temp. thermostat. It will open up the coolant passage at a lower temp and thus start cooling down your car sooner. It will take your car longer to warm up. It kinda sucks since you can't take off the exhaust manifolds on the 3G TL IIRC, supposedly header coating lowers the temp a lot.
#26
Green Machine
iTrader: (3)
all great responses...i think i'll be doing the gold foiling (where exactly do you get that) but my main concern is whether or not the car SHOULD be having the above symptoms. obviously, when it gets hotter out and more humid, less air blah blah blah, yeah...but after 15 minutes of driving, i really don't feel like the engine should getting be so heat-soaked.
excelerate, i'll hit you up for some gaskets for sure.
excelerate, i'll hit you up for some gaskets for sure.
http://www.cdoc.com/detail.asp?id=34...rotective+Film
http://www.pegasusautoracing.com/pro...p?Product=1838
So that is out of the way; now where can we get the fan switch and the thermostat?
#27
Suzuka Master
iTrader: (4)
gold foil on the intake... and modify the fan switch to come on sooner... they sell a fan switch believe all honda's use the same
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
also there are company's which make coolant fluids which keep the temperatures lower... I am anal about only running the blue stuff.... but hey if the stuff keeps the car cooler thats what you want, go for it... see royal purple
In addition to what's been said, get a lower temp. thermostat. It will open up the coolant passage at a lower temp and thus start cooling down your car sooner. It will take your car longer to warm up. It kinda sucks since you can't take off the exhaust manifolds on the 3G TL IIRC, supposedly header coating lowers the temp a lot.
#28
Pro
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Couldnt you take the iat sensor on the block and relocate it to the air intake and buy another sensor to plug the hole? you could then switch it back and forth. I had a jeep with a 318 and did this with positive results plus it would be reading the actual temp of the air before it went into the engine.
Wouldnt that advance the timing slightly and get more power?
Wouldnt that advance the timing slightly and get more power?
#29
practicing nihilist
Couldnt you take the iat sensor on the block and relocate it to the air intake and buy another sensor to plug the hole? you could then switch it back and forth. I had a jeep with a 318 and did this with positive results plus it would be reading the actual temp of the air before it went into the engine.
Wouldnt that advance the timing slightly and get more power?
Wouldnt that advance the timing slightly and get more power?
However, I don't recall if it was warm weather tested. I think you can search "CAI+IAT" for the old thread.
#30
is the gold foil the best option for wrapping the intake with? I have seen other people using something more like a thin cloth type material and its wrapped on the intake like people used to wrap leather on a steering wheel... what is that material called?
thanks.
thanks.
#32
Team Owner
Just about any type of wrap will be within a few % of one another for a CAI. I would buy based on price. The air if flowing through there so fast, it really doesn't matter much.
#34
I Hate Cars is right...insulating the CAI pipe hardly matters. I recall reading on the AEM site (I think) that they used aluminum over materials having superior insluation properties because the velocity of the intake flow was too fast & the amount of air contacting the pipe wall so small that neither contributed to appreciable heating of the intake flow.
Also, I read a study once where the calcs of the amount of power gained by a cooler flow through the TB when doing a TB coolant bypass is practically nothing. The greatest significance of a bypass would be to keep the actual intake manifold cooler from reduced conduction coming from the TB.
However, insulators at both the TB & between the intake manifold & block keep the inake plenum cooler; the velocity of flow is less & the surface area of contact is greater there. One manufacturer of gaskets claims a 6.8 hp gain for a Gen 2 TL. Actually, these ratings are a bit misleading. Phenolic spacers don't add hp, they retard the loss of it by reducing the rate at which the intake heats up. Eventually all intake assemblies will heat up from conductive, convective, and radiating heat coming off the surrounding engine compartment components...from the block itself & the transmission for example.
Also, I read a study once where the calcs of the amount of power gained by a cooler flow through the TB when doing a TB coolant bypass is practically nothing. The greatest significance of a bypass would be to keep the actual intake manifold cooler from reduced conduction coming from the TB.
However, insulators at both the TB & between the intake manifold & block keep the inake plenum cooler; the velocity of flow is less & the surface area of contact is greater there. One manufacturer of gaskets claims a 6.8 hp gain for a Gen 2 TL. Actually, these ratings are a bit misleading. Phenolic spacers don't add hp, they retard the loss of it by reducing the rate at which the intake heats up. Eventually all intake assemblies will heat up from conductive, convective, and radiating heat coming off the surrounding engine compartment components...from the block itself & the transmission for example.
Last edited by Snookynibbles; 05-12-2009 at 10:56 PM.
#35
Safety Car
Thread Starter
^ yeah i hate cars is right...
after looking into the foil material, it just wasn't worth while...
the gaskets look promising though
on the contrary, i don't understand why my car seems to be the most effected by heat. it's normal, yes, but i doubt to the extent that i'm experiencing...
i thought o2 sensors had no affect on performance? (from previous post)...i still have that cel
after looking into the foil material, it just wasn't worth while...
the gaskets look promising though
on the contrary, i don't understand why my car seems to be the most effected by heat. it's normal, yes, but i doubt to the extent that i'm experiencing...
i thought o2 sensors had no affect on performance? (from previous post)...i still have that cel
#38
Team Owner
^ yeah i hate cars is right...
after looking into the foil material, it just wasn't worth while...
the gaskets look promising though
on the contrary, i don't understand why my car seems to be the most effected by heat. it's normal, yes, but i doubt to the extent that i'm experiencing...
i thought o2 sensors had no affect on performance? (from previous post)...i still have that cel
after looking into the foil material, it just wasn't worth while...
the gaskets look promising though
on the contrary, i don't understand why my car seems to be the most effected by heat. it's normal, yes, but i doubt to the extent that i'm experiencing...
i thought o2 sensors had no affect on performance? (from previous post)...i still have that cel
#39
Safety Car
Thread Starter