Re: Abbott Intercooler Installed - But I have questions(LONG) - Saab Performance Bulletin Board - Saabnet.com
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Re: Abbott Intercooler Installed - But I have questions(LONG)
Posted by watto (more from watto) on Thu, 23 Nov 2000 00:07:25
In Reply to: Abbott Intercooler Installed - But I have questions(LONG), Jeff Cunningham, Mon, 20 Nov 2000 15:28:30
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Resist the temptation to use larger Diameter tubes than necessary, as little drag is created in smooth tubes with gentle bends. Larger tubes will only add to the volume of the IC system and that is not a good thing to do.
RULE: A large tube is not necessarily better than a small tube.
The rule of thumb is airflow velocity should not exceed Mach .4, or approx. 450ft/sec, since drag and folw loss increases significantly after this.
I suggest a simple calculation to see where your IC is compared the above rule.
Velocity = airflow/area
airflow = S(mph)x A(IC size in sf)
e.g1 mi/hr x sf x 5280ft/mi x 1/60hr/min = cfm
Assume airflow = 600cfm and tube dia. = 2.5in
velocity = 600cfm/4.90sf x 1min/60sec/1sf/144si = 293ft/sec
Mach = 293ft/sec/1100ft/sec = 0.27 less than Mach .4, this tube would provide adequate flow without unreasonable drag.
Good luck!!!!!!!!!
Posts in this Thread:
- Abbott Intercooler Installed - But I have questions(LONG), Jeff Cunningham, Mon, 20 Nov 2000 15:28:30
- Re: Abbott Intercooler Installed - BEWARE A COPYCAT), Michael , Mon, 27 Nov 2000 13:51:09
- Robert Davis - any thoughts? (n/m), TimD, Thu, 23 Nov 2000 17:55:31
- I'm with GM, but Abbott Bros. must have reasons, TimD, Thu, 23 Nov 2000 17:53:03
- Re: Abbott Intercooler Installed - But I have questions(LONG), watto, Thu, 23 Nov 2000 00:07:25 <-- Viewing This Message
- Re: Abbott Intercooler Installed, Jon , Tue, 21 Nov 2000 19:37:35
- Re: Abbott Intercooler Installed, Jon , Tue, 21 Nov 2000 19:35:45
- Re: Abbott Intercooler Installed - But I have questions(LONG), Kevin K , Tue, 21 Nov 2000 17:44:31
- Components question, Shaun , Tue, 21 Nov 2000 07:44:18
- Cool, Jerm, Mon, 20 Nov 2000 20:56:18
- Re: Abbott Intercooler Installed - But I have questions(LONG), BobJ, Mon, 20 Nov 2000 18:43:26
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