Heatsoak-low boost

[Mike M]

I am trying to get my car sorted out before I get it dynoed (considering shipping it to MartyO as my local options seem a bit limited so far).

It is very hot here...105+ and I was wondering how must boost are people loosing in hot weather?

Also I noticed my IAT were high above OAT so which of the CAI kits seem to work the best? It would have to fit with the ProCharger kit.

[SC Cheesehead]

I am trying to get my car sorted out before I get it dynoed (considering shipping it to MartyO as my local options seem a bit limited so far).

It is very hot here...105+ and I was wondering how must boost are people loosing in hot weather?

Also I noticed my IAT were high above OAT so which of the CAI kits seem to work the best? It would have to fit with the ProCharger kit.

You won't lose any boost, but the ECM will retard your timing as IAT increases. How "high" is high? What's your IAT running relative to ambient?

A bigger intercooler will help reduce IAT, I'm running a Frozen Boost Type 100 on my car and typically will run in the 120's to 130's on real hot days (over 90* ambient).
http://www.frozenboost.com/product_info.php?cPath=217&products_id=1002&osCsid=d36b9692b2074a893b39cfb 6638aa58a

Another alternative is going with a Killer Chiller.
http://www.killerchiller.com/

[LANDY]

You won't lose any boost, but the ECM will retard your timing as IAT increases. How "high" is high? What's your IAT running relative to ambient?

A bigger intercooler will help reduce IAT, I'm running a Frozen Boost Type 100 on my car and typically will run in the 120's to 130's on real hot days (over 90* ambient).
http://www.frozenboost.com/product_info.php?cPath=217&products_id=1002&osCsid=d36b9692b2074a893b39cfb 6638aa58a

Another alternative is going with a Killer Chiller.
http://www.killerchiller.com/ He has a procharger air to air.
To OP how much higher than outside temp is your IAT?
What makes you think you are loosing boost?

[Blackmobile]

I actually thought I had a heat problem with the TS until I saw your readings. 120's to 130's is what I also see down here in So. Fla.


You won't lose any boost, but the ECM will retard your timing as IAT increases. How "high" is high? What's your IAT running relative to ambient?

A bigger intercooler will help reduce IAT, I'm running a Frozen Boost Type 100 on my car and typically will run in the 120's to 130's on real hot days (over 90* ambient).
http://www.frozenboost.com/product_info.php?cPath=217&products_id=1002&osCsid=d36b9692b2074a893b39cfb 6638aa58a

Another alternative is going with a Killer Chiller.
http://www.killerchiller.com/

[SC Cheesehead]

He has a procharger air to air.
To OP how much higher than outside temp is your IAT?
What makes you think you are loosing boost?

Gotcha, should have checked his sig... Air to air should be pretty efficient, IIRC; agree with your question, Landy, hard to determine "hot" without knowing what he's running.


I actually thought I had a heat problem with the TS until I saw your readings. 120's to 130's is what I also see down here in So. Fla.

Yeah, around 90* seems to be the tipping point for the high sustained IATs; I generally run 25-30 degrees higher than ambient.

Biggest problem is when I'm in traffic or after being shut down for a while, heat sink in the blower head just won't drop if the ambient temp is high, no matter how much air I flow through the H.E.

[Mike M]

Just took it for a 20 minute ride with about 5 min idling.

Ambient air 105
IAT 152 but will go down to about 132 when moving but will spike back up fast when idling.

I floored it a about 2 sec yesterday and boost only went to about 6psi.

I understand HOT....and I am not going to worry too much as none my cars really feels fast in this heat but was just checking for opinions.

I was thinking a CAI kit may help a bit but wasn't sure if one is better then another.

[SC Cheesehead]

Just took it for a 20 minute ride with about 5 min idling.

Ambient air 105
IAT 152 but will go down to about 132 when moving but will spike back up fast when idling.

I floored it a about 2 sec yesterday and boost only went to about 6psi.

I understand HOT....and I am not going to worry too much as none my cars really feels fast in this heat but was just checking for opinions.

I was thinking a CAI kit may help a bit but wasn't sure if one is better then another.


Sounds like you've got a leak somewhere. What's it pulling for vacuum at idle?

CAI won't do much for cooling incoming air, and even if it would, it's not going to impact temps inside the blower as it's the blower compression that's increasing air temperature. What you want to do is pull the heat out of the air going into the engine (improving efficiency of the intercooler).

[Mike M]

Sounds like you've got a leak somewhere. What's it pulling for vacuum at idle?

CAI won't do much for cooling incoming air, and even if it would, it's not going to impact temps inside the blower as it's the blower compression that's increasing air temperature. What you want to do is pull the heat out of the air going into the engine (improving efficiency of the intercooler).

Thought the IAT sensor was in the MAF? If so it's before the blower.

[SC Cheesehead]

Thought the IAT sensor was in the MAF? If so it's before the blower.


Not certain how the ProCharger is set up, my Eaton is set up with an IAT sensor downstream, so it's picking up air temps inside the intake. I may be all off on my suggestion, based on that, sorry for misleading.

[justbob]

To the best of my knowledge, most S/C tunes pull serious timing once you hit 150 IAT. It would feel slower than stock and have almost a bad gas feel. Sounds like yours is just starting to lose it's efficiency and tipping the scale of pulled timing. Doesn't all Prochargers come with a CAI? Best bet is to find a way to completely seal off the air filter from the engine bay. Your not losing any boost through the BOV are you?

Sent from my Ally using Tapatalk 2

[LANDY]

You should have the IAT sensor between blower and intake. 6ps is ridiculous low for your pulley setup. Check your bypass valve, also all your couplers.
the IAT seems to be about normal for traffic conditions.
mine in traffic stays between 120-150* on a 100* day

[Mike M]

Funny you guys are thinking BOV, found this thread today. Funny thing is my cars does the exact same thing when starting sometimes where it will start but stall.

http://www.mercurymarauder.net/forums/showthread.php?t=71636&highlight=iat&page=2

Any feedback on this brand BOV???

[justbob]

LOL BOV BBP... You knew what I meants. I remember Dominicks being bad for awile, just don't remember the issues he was having other than boost loss.

Sent from my Ally using Tapatalk 2

[Mike M]

To the best of my knowledge, most S/C tunes pull serious timing once you hit 150 IAT. It would feel slower than stock and have almost a bad gas feel. Sounds like yours is just starting to lose it's efficiency and tipping the scale of pulled timing. Doesn't all Prochargers come with a CAI? Best bet is to find a way to completely seal off the air filter from the engine bay. Your not losing any boost through the BOV are you?

Sent from my Ally using Tapatalk 2

No cold air intake, just a K&N type cone air filter, it is not isolated.

[napolitano]

I am trying to get my car sorted out before I get it dynoed (considering shipping it to MartyO as my local options seem a bit limited so far).

It is very hot here...105+ and I was wondering how must boost are people loosing in hot weather?

Also I noticed my IAT were high above OAT so which of the CAI kits seem to work the best? It would have to fit with the ProCharger kit.

Mike, did you get my email? How big is your cooler?

[sailsmen]

The highest off boost IAT I have seen is 125* and it usually never goes above 115*.

I have a sealed box for the air filter that feeds from behind the head light.

With the Meth it is 20* above OAT at the end of the 1/4.

[Local Boy]

The new BOV from Procharger is much better than the old original one (larger diaphram)...

My old one went bad too...caused the A/F to be erratic, and loss of Boost...

Good Luck

BTW: I run a small 300 cfm (I think) fan behind the drivers side head light (sits directly in front of the air filter), to help with this HOT Hawaiian days! Works for me...!

Aloha

[Mike M]

The new BOV from Procharger is much better than the old original one (larger diaphram)...

My old one went bad too...caused the A/F to be erratic, and loss of Boost...

Good Luck

BTW: I run a small 300 cfm (I think) fan behind the drivers side head light (sits directly in front of the air filter), to help with this HOT Hawaiian days! Works for me...!

Aloha
I am having the Pro charger unit delivered tomorrow. If you get a chance, take a pic of your fan setup.
Thanks

[Mike M]

The highest off boost IAT I have seen is 125* and it usually never goes above 115*.

I have a sealed box for the air filter that feeds from behind the head light.

With the Meth it is 20* above OAT at the end of the 1/4.

My meth is sprayed after my IAT.

I may try a CAI

[sailsmen]

My meth is sprayed after my IAT.

I may try a CAI

I moved my IAT sensor;
http://www.mercurymarauder.net/forums/showthread.php?t=73919

[magindat]

I put my blow off valve BEFORE the intercooler and IAT's dropped to near ambient. No heat soak - ever.

[LANDY]

So you guys are saying that in traffic on a 90* plus weather you don't see the IAT temps above 120's. Wow. I must be doing something wrong.
I have had two vortechs, and driven a hand full of centrifugal setups on a marauder in the summer and I will tell ya'll all have acted the same. So what are ya'll doing that I'm not?

[Seneca]

So you guys are saying that in traffic on a 90* plus weather you don't see the IAT temps above 120's. Wow. I must be doing something wrong.
I have had two vortechs, and driven a hand full of centrifugal setups on a marauder in the summer and I will tell ya'll all have acted the same. So what are ya'll doing that I'm not? Mines the same as yours Landy, 140+ last year in the summer stop and go traffic. I thought it was high but then again aout side temp was over 100 and humid.?

[Mike M]

I think my IAT temps are more in the normal range after some thought. 150 for under hood is reasonable with 105+ ambient and in traffic. It does go down quite a bit when I get air flow. I could probably do a bit better with trying to isolate the air filter. I am tackling that project as well. After it goes through my air filter and MAF it then gets hit with methanol/water so in realty it is much cooler before entering engine.

[sailsmen]

I put my blow off valve BEFORE the intercooler and IAT's dropped to near ambient. No heat soak - ever.

That is where Vortech recs it be mounted. I also have a blow thru and vent to atnosphere. IAT 8*-20* above ambient.

"Where is the best place to mount a race or mondo air bypass valve?

Depending on the application, the bypass valve should be mounted on the discharge tube of the supercharger. On other applications, it may be more convenient to mount the bypass valve on the intake plenum. Often times because of space limitations it is more convenient to remote mount the bypass valve at a location where space allows. On custom applications, the location being chosen should allow for the space limitations and aesthetics of the particular systems installation."

[Local Boy]

I'll work on taking some pics of my fan set up...It may help you as well...

I don't remember ever going over 132* on 100* days

Aloha