Intake mod - yay or nay
06-30-21, 08:47 AM
#26
In terms of street-able, I closed off the ducts three holes and it works. The car runs happily and fine around 40-50c. Although stoplight heat soak can happen if my A.C. is on. I just stay out off of the throttle and it'll cool back down in a minute with 30mph+
My battery has never gone over 50c when intentionally trying to heat soak the system although I imagine it won't do it any favors in terms of lifespan. I also have a gap on the intake of the radiator for cool air to enter the apexi intakes and a little sheet of metal to block off the intercooler from the intakes somewhat. Although I wouldn't dare track it in that form and I'd be nervous to autocross it for fear of heat soaking the crap out of the thing and it may heat soak just sitting there.
Granted though I have ducted dual factory oil coolers and sealed the rad with high temp A.C. foam. Between that and the koyo rad car maintains low-mid 80c on coolant. Pushed hard she won't go above 90c although the intercooler has like a solid minute before it'll soak on 11psi. I have a FMIC waiting to go on after a few more support mods. The ducting I plan on doing ought to keep my car in check for a few hot laps and a cooldown lap or two.
My battery has never gone over 50c when intentionally trying to heat soak the system although I imagine it won't do it any favors in terms of lifespan. I also have a gap on the intake of the radiator for cool air to enter the apexi intakes and a little sheet of metal to block off the intercooler from the intakes somewhat. Although I wouldn't dare track it in that form and I'd be nervous to autocross it for fear of heat soaking the crap out of the thing and it may heat soak just sitting there.
Granted though I have ducted dual factory oil coolers and sealed the rad with high temp A.C. foam. Between that and the koyo rad car maintains low-mid 80c on coolant. Pushed hard she won't go above 90c although the intercooler has like a solid minute before it'll soak on 11psi. I have a FMIC waiting to go on after a few more support mods. The ducting I plan on doing ought to keep my car in check for a few hot laps and a cooldown lap or two.
06-30-21, 09:36 AM
#27
Rotary Enthusiast
In terms of street-able, I closed off the ducts three holes and it works. The car runs happily and fine around 40-50c. Although stoplight heat soak can happen if my A.C. is on. I just stay out off of the throttle and it'll cool back down in a minute with 30mph+
My battery has never gone over 50c when intentionally trying to heat soak the system although I imagine it won't do it any favors in terms of lifespan. I also have a gap on the intake of the radiator for cool air to enter the apexi intakes and a little sheet of metal to block off the intercooler from the intakes somewhat. Although I wouldn't dare track it in that form and I'd be nervous to autocross it for fear of heat soaking the crap out of the thing and it may heat soak just sitting there.
Granted though I have ducted dual factory oil coolers and sealed the rad with high temp A.C. foam. Between that and the koyo rad car maintains low-mid 80c on coolant. Pushed hard she won't go above 90c although the intercooler has like a solid minute before it'll soak on 11psi. I have a FMIC waiting to go on after a few more support mods. The ducting I plan on doing ought to keep my car in check for a few hot laps and a cooldown lap or two.
My battery has never gone over 50c when intentionally trying to heat soak the system although I imagine it won't do it any favors in terms of lifespan. I also have a gap on the intake of the radiator for cool air to enter the apexi intakes and a little sheet of metal to block off the intercooler from the intakes somewhat. Although I wouldn't dare track it in that form and I'd be nervous to autocross it for fear of heat soaking the crap out of the thing and it may heat soak just sitting there.
Granted though I have ducted dual factory oil coolers and sealed the rad with high temp A.C. foam. Between that and the koyo rad car maintains low-mid 80c on coolant. Pushed hard she won't go above 90c although the intercooler has like a solid minute before it'll soak on 11psi. I have a FMIC waiting to go on after a few more support mods. The ducting I plan on doing ought to keep my car in check for a few hot laps and a cooldown lap or two.
Just curious what's your ambient temp with those figures?
06-30-21, 05:20 PM
#28
65-75f Ambient east coast humidity too.
I just got finished with a drive in this 94 degree heat according to my friends integrated car thermometer.
Could not fall below 55c peaks of 65c which scared me straight out of boost the change was near instant. Heat soaking at 73c when I met some traffic I turned off my A.C. and it stopped there. Engine was happy at 89c but was probably the reason my inter cooler was soaking when the A.C. turns on the fan it just PUMPS hot air everywhere.
Although before a.c. taping the **** out of the duct I'd see 60c on a 75f degree day I think all the air was just going out the massive hole I left when I added on the apexi
I got the idea from an old thread I read about a dude adding an extension and riveting a cover and cutting up the stock duct and covering that too. Same idea just waaaay lazier.
It seems the magic number is 30-40 above ambient for a DUCTED stock intercooler with 0 heatsoak. I wouldn't dare try not having a duct for it. Seems like a perfect recipe for BOOM.
I just got finished with a drive in this 94 degree heat according to my friends integrated car thermometer.
Could not fall below 55c peaks of 65c which scared me straight out of boost the change was near instant. Heat soaking at 73c when I met some traffic I turned off my A.C. and it stopped there. Engine was happy at 89c but was probably the reason my inter cooler was soaking when the A.C. turns on the fan it just PUMPS hot air everywhere.
Although before a.c. taping the **** out of the duct I'd see 60c on a 75f degree day I think all the air was just going out the massive hole I left when I added on the apexi
I got the idea from an old thread I read about a dude adding an extension and riveting a cover and cutting up the stock duct and covering that too. Same idea just waaaay lazier.
It seems the magic number is 30-40 above ambient for a DUCTED stock intercooler with 0 heatsoak. I wouldn't dare try not having a duct for it. Seems like a perfect recipe for BOOM.
06-30-21, 06:04 PM
#29
Rotary Enthusiast
That's I like water injection!!!!
08-08-21, 09:42 AM
#30
I thought I should add to this as I'm putting in my big fat greddy m-spec knockoff intercooler and other relevant goodies.(ecu,o2,water ai)
80 degree's in northern Virginia running fine just cruising around.
Went to a little 1/8th mile test and tune and found by the time I shifted into third my power basically flatlined compared to a highway 5th to 3rd shift.
Buddy in a stockish fox mustang basically matched exactly the same. launch, shifts and at the end he even started to nudge past me. Instant heat soak from the launch.
This is considering a catback, HKS downpipe and open intake. Even the ducting couldn't stop the heat train being ran on the stock intercooler. I imagine one without ducting one is undrivable.
went from 110F to 170F as measured from before I went to after I came back. 170 might be good for water temps but definitely not intake temps.
TLDR:
you might as well be stock with stock intercooler.
80 degree's in northern Virginia running fine just cruising around.
Went to a little 1/8th mile test and tune and found by the time I shifted into third my power basically flatlined compared to a highway 5th to 3rd shift.
Buddy in a stockish fox mustang basically matched exactly the same. launch, shifts and at the end he even started to nudge past me. Instant heat soak from the launch.
This is considering a catback, HKS downpipe and open intake. Even the ducting couldn't stop the heat train being ran on the stock intercooler. I imagine one without ducting one is undrivable.
went from 110F to 170F as measured from before I went to after I came back. 170 might be good for water temps but definitely not intake temps.
TLDR:
you might as well be stock with stock intercooler.
Thread
Thread Starter
Forum
Replies
Last Post
rx7machine
3rd Generation Specific (1993-2002)
3
12-24-02 04:51 PM