Gauging interest in custom sidemount intercoolers w/9.75" x 11.75" x 4.5" Bell Cores

[Chris@Rvengeperformance]

possibly interested if I could still get near $1000 for my ets setup. Would be a while before I could commit unless someone wanted to buy my fmic right away. closing on a house and paying for motor from ray soon.

[HLxDrummer]

As badass as that sounds, therein would be my question...

There are more than a few of us out here that do not now, nor will ever, need 1900cfm of intercooler that can support 1200 horsepower. Is making a similar setup with about half(?) of that capacity not worth the time, or is the expense for same just too close to what you are proposing so that its not worth the effort?

[wingnut]

my bad...ignore this post

[JasonY]

The sidemount will be less efficient at sucking up heat as a comparable FMIC. So the very high cfm to hp rating of the FMIC is not as relevent to the sidemounts. The sidemounts can be more efficient if you can get air in them and cleanly out of them at sustained speed use but likely still not as good as a FMIC for drag racing since the IC then is just a big heat sink, bigger = better.

SMIC is the way to go imo, cleaner look, cleaner fit, fmic's now are tacky and cop magnets. SMIC ftw.

Jason

[Jimvr4]

Interested but according to Oohnoo the stock IC piping is 1.575 ID, not 2 inch. Also will they mount exactly like stock and fit with the stock oil cooler?

[CoopKill]

If you have DNP pipes, or 2" aftermarket pipes you are golden. If you have oem sized pipes you only need a reducing coupler at the location.

[J. Fast]

As badass as that sounds, therein would be my question...

There are more than a few of us out here that do not now, nor will ever, need 1900cfm of intercooler that can support 1200 horsepower. Is making a similar setup with about half(?) of that capacity not worth the time, or is the expense for same just too close to what you are proposing so that its not worth the effort?

CFM is a measurement of flow capacity and restriction. We really only want to be reliant on demanding 75% of the full capacity. That way it maintains its flow characteristics and btu rating and you don't heat soak it.

The sidemount will be less efficient at sucking up heat as a comparable FMIC. So the very high cfm to hp rating of the FMIC is not as relevent to the sidemounts. The sidemounts can be more efficient if you can get air in them and cleanly out of them at sustained speed use but likely still not as good as a FMIC for drag racing since the IC then is just a big heat sink, bigger = better.

SMIC is the way to go imo, cleaner look, cleaner fit, fmic's now are tacky and cop magnets. SMIC ftw.

Jason

Actually, I was surprised in discovering how very little core temp is impacted by exposed surface area. You could cut a hole the size of a baseball in your front bumper and at 100mph the airflow vs. drag benefit is actually much better than a 12" x 36" cut-out for an FMIC. The air temp drop across the core from inlet to outlet pretty much stays the same too. At speed you really want small holes and the airflow will arrive just the same as if the holes were 3 times larger. Look at NASCAR and how small their radiator and bumper cut-outs are and how long they have to dip out of the draft and catch clean air to cool down. It takes about 5 seconds at speed to cool down their heat sinks 50 degrees thru bumper openings measuring 12 square inches.

Interested but according to Oohnoo the stock IC piping is 1.575 ID, not 2 inch. Also will they mount exactly like stock and fit with the stock oil cooler?

There will be a provision for a bracket to sandwich the stock oil cooler for the drivers side and passenger side. That leaves room for twin oil coolers.

More then likely the bracket upgrade will be forced and will ease installation and hopefully minimize BFH, excessive cutting and re-decorating.

The intercooler step increase can be rectified with a simple silicon coupler. Sourcing those is individual responsibility. I think a 2-1.5" 4-ply reducer is around $15

[Snook]

wishing i had cash ATM.

[JasonY]

Thats mostly my point J. but for drag racing the short burst of hot air the FMIC is more well suited since there is little time for much heat transfer.

Jason

[Ange]

The cores may be 900 cfm but that doesn't matter when you put 2" pipes on there.

The velocities are in miles per hour and mach, and the flow rates are in cfm. Measurements for the piping are in inches.
0.4 mach = 304 MPH

2" piping
1.57 x 2 = 3.14 sq in
300 cfm = 156 mph = 0.20 mach
400 cfm = 208 mph = 0.27 mach
500 cfm = 261 mph = 0.34 mach
585 cfm max = 304 mph = 0.40 mach


2.25" piping
3.9740625 sq in = 1.98703125 x 2
300 cfm = 123 mph = 0.16 mach
400 cfm = 164 mph = 0.21 mach
500 cfm = 205 mph = 0.26 mach
600 cfm = 247 mph = 0.32 mach
700 cfm = 288 mph = 0.37 mach
740 cfm max = 304 mph = 0.40 mach


2.5" piping
4.90625 sq in = 2.453125 x 2
300 cfm = 100 mph = 0.13 mach
400 cfm = 133 mph = 0.17 mach
500 cfm = 166 mph = 0.21 mach
600 cfm = 200 mph = 0.26 mach
700 cfm = 233 mph = 0.30 mach
800 cfm = 266 mph = 0.34 mach
900 cfm = 300 mph = 0.39 mach
913 cfm max = 304 mph = 0.40 mach


2.75" piping
5.9365625 sq in = 2.96828125 x 2
300 cfm = 82 mph = 0.10 mach
400 cfm = 110 mph = 0.14 mach
500 cfm = 137 mph = 0.17 mach
600 cfm = 165 mph = 0.21 mach
700 cfm = 192 mph = 0.25 mach
800 cfm = 220 mph = 0.28 mach
900 cfm = 248 mph = 0.32 mach
1000 cfm = 275 mph = 0.36 mach
1100 cfm max = 303 mph = 0.40 mach


3.0" piping
7.065 sq in = 3.5325 x 2
300 cfm = 69 mph = 0.09 mach
400 cfm = 92 mph = 0.12 mach
500 cfm = 115 mph = 0.15 mach
600 cfm = 138 mph = 0.18 mach
700 cfm = 162 mph = 0.21 mach
800 cfm = 185 mph = 0.24 mach
900 cfm = 208 mph = 0.27 mach
1000 cfm = 231 mph = 0.30 mach
1100 cfm = 254 cfm = 0.33 mach
1200 cfm = 277 mph = 0.36 mach
1300 cfm max= 301 mph = 0.39 mach

*.4 Mach is the point at which air becomes turbulent and losses in efficiency start to occur exponentially. The key is to stay under that speed. You want to use the smallest piping possible that still flows enough to meet your needs. Larger than necessary piping increases lag time with no measurable gain

Based on that you may aswell use thinner cores. Say 3,5". Which means better adapted cfm for most turbos (less lag) means better outside airflow and cooling through the core.