Department Of Boost
Alpha Geek
- Joined
- May 26, 2010
- Posts
- 8,809
- Reaction score
- 28
Wow. I'm done, and this mod is EPIC.
Over 14 GALLON PER MINUTE (GPM) FLOW RATE!
So...we know for a fact that this beast flows MORE than 14GPM. As I started pouring in the 4 gallons of water I had in the bucket I'm holding, the Stewart pump sucked faster than I could initially pour and it sucked in a gulp of air for a second, then gobbled up more water and just kept on going like a champ. In 15 seconds, this system ingested 3.5 gallons of water and a gulp of air. That is THROUGH THE ROUSH TVS INTERCOOLER that only has 3/4" inlets and outlets!
You can't test the flow rate like that. When pumping into a empty system you're not pumping against the restriction that would be there is the entire system was full of water alreday. You're pumping against nothing (air).
I had expected 9.3 GPM after talking with Jason at Department OF Boost (DOB), as he has done some experiments on flow rate. DOB's new heat exchanger with 1.25" inlets and outlets has been tested to flow 12.75 GPM. Needless to say I'm VERY please with over 14GPM.
Your Stewart/1" line/1" HE/stock IC should move 10.75gpm. If you take the 14gpm result you got above and subtract the "bonus flow" you got from not pumping against a restriction that sounds like what you have.
If you were to gauge up to a 1.25" system you would see 15.5gpm
All of this data is up on the site:
https://www.departmentofboost.com/tech/
I also ran a toggle switch to the fans on my Steeda Triple Pass...I tried cycling them OFF and ON while cruising...I could not notice a difference on IAT's...more on that topic in a future update, but a quick glimpse into that next study is that I have ordered some coolant temp sensors and I plan on measuring temperatures with actual probes in the coolant BEFORE and AFTER the the heat exchanger to see what impact the fans make (if any at all) when cruising. The big thing is that I want to make sure that fans do not harm my intercooler performance, and real data collection with a system installed on a car is the only way to make that determination. "To fan - or not to fan - that is the question".
Give the fan article on the site a read. Then go to the DOB FB Group and see the second half of testing (I need to find the time to consolidate them into one article)