Item number: 270158442310 www.ebay.com

i have a Ford M90 strapped directly to a custom intake plenum. The ford unit does not have a blower bypass vavle incorporated into it like the GM M90 does. Well i found out, this makes unnessisary heat when at crusing speeds. for instance, rolling down the highway, with just enough gas to keep the speed steady, my intake temps are slowly rising. I want to make a bypass valve to go around the blower when there is vacumm in the plenum. i was thinking maybe a BOV would do the job, but i wanted to ask some of you turbo guys if its possible to use it like this.

My intake is set up like this... Filter, TB, Blower, Plenum, Head. I want to make a small bypass tube going from just after the TB, to the Plenum, with the BOV inline acting as a on/off switch for air flow. this will allow air to be diverted around the blower when plenum KPA's are below 100. i believe by doing this, my blower will see less heat while crusing. is this correct? and would the ebay item posted above do the job correctly? thanks for your insite.



M90'd Built LGO-15 PSI
http://webstarts.com/quadper4mance

at one point i had thought about this as well. the problem i see is that the valve uses a vacuum signal at the top port that works with a pressure pushing against the valve as well, these two pressures combined allow the valve to open against spring pressure. with running it opposite you will have two equal vacuum signals on both sides so there is no force against the spring. add to this that you are presumably running less vacuum after the rotors than before (since you are building heat) so you now have an extra bit of pressure working against you. i am not sure if i would be able to figure out how to post a diagram, so message me if it isn't very clear what i mean.

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Now with northstar V8, IRS, 20's n 22's