rodolf911

With 2.6 pulley and ARH headers, my IAT2 is quickly hot with drop performance after 2 or 3 runs.


Someone has already mount this LPE intercoolers upgrade ?


http://www.lingenfelter.com/product/L320076109.html


And see a real drop of IAT2 ?


Thanks

jft69z

Modified stock intercoolers are more efficient than the Ling. ones according to testing done long time ago. Nobody who makes any power has used the Lingenfelter coolers to my knowledge.

rodolf911

Do you have pictures please of stock intercoolers modified ?


I just seen stock intercoolers destroyed with 2.6 pulley and too hot temp° (maybe harmonier changed too)

rodolf911

So what is the best solution to drop compressor air intake temperature with 2.6 pulley and stock harmonier ?


Maybe live in Alaska...

jft69z

Top picture is modified stock, next 2 of what happens when they fail. The failed bricks pictured were from a ZR1 with a 2.6 pulley.

https://www.corvetteforum.com/forums...post1593364666

BearZ06

Modifying the bricks is only to prevent them from coming apart. For better cooling swap your heat exchanger for the Edelbrock 15405. There's a lot of very good info here even though some of the pictures no longer load.

https://www.corvetteforum.com/forums...st-do-mod.html

rodolf911

Ok thanks


http://www.d3peparts.com/mobile/Prod...E-ZR1-BrickMod

rodolf911

Swap will bolt on without mods ?

It will drop IAT2 ? You have before/after values ?

Hockyz

Are you sure your system is well bled? My temps are fairly well controlled on a 2.6 and stock HX.

rodolf911

Can you tell us your max IAT2 please ? After 2 or 3 runs.


With 2.6 pulley, stock intercooler, stock heat exchanger, i think you will have up to 140°F like me...

Hockyz

I mean, obviously it depends on starting IAT2 and what you define as a run. I'd have to go back to logs to confirm, but from memory I gain like 10 degrees per 2/3/partial 4th pull and recovery that back fairly quickly. If I started a pull at 130 degrees, you'd be right. ;-)

rodolf911

A run is full throttle in gear 3 or 4 until 6599rpm


I will log my IAT2 and post values.

Fulton 1

Is anybody selling cores or new intercooler bricks? Trying to minimize downtime on having mine modified.

ralphsmithiii

For what its worth, I believe most shops can have them done in 1-2 days tops. Depending on where you're located, shipping may take up the majority of the time. But, if you can find a shop somewhat local then the downtime may be very short. I think I read that Dedicated turns them around in 1 day.

rodolf911

Not sure, but if you modify your stock intercoolers, you just protect them from damage at higher boost level, but you'll not drop your IAT2 value. You need bigger intercooler and heat exchanger to drop temperatures.

Hockyz

Yea, DMS turned mine around same day.

Fulton 1

Well, answered my own question on sourcing of the bricks. Looks like GM part number 12598644. For some reason I thought they weren't available separately.

VTC_ZR1

Even with a Fasterproms expansion tank, I was having a hard time keeping the system below 140* on a hard 2-4 pull with the same 2.6 upper and a set of LT's, the stock HX gets overwhelmed pretty quickly once you up the pressure levels. Once I went with the D3 system, much slower rate of temp climb and very rapid recovery.

WeaponsGradeTorque

you are going to need a completely new IC system. That should be step 1 of modding any ZR1 that has increased boost.

rodolf911

Ok thanks guys