Opinions please

[belsie]

I am running a stock intake & plenum w/ RJC plate, my question is since I am full E-85 could I live w/out the plate as I'm thinking it must restrict overall air flow as it does what it is designed to do???? Would a modified plenum or aftermarket be a better way to go? Just throwing this out for feedback..............Happy New Year

 

[Turbo6inKY]

At a certain point, the plate becomes a restriction.

The only way to tell is drive it down the track, pull the plate, drive it down the track again. If the MPH goes up, it's in the way. If not, put it back in.

 

[~JM~]

Richard Clark performed several flow tests with RJC plates. You might want to look it up. Seem to recall that they were not a restriction, but I don't recall what flow levels were used in the test.

 

[1986 Buick GX1]

This is RJC's FAQ link.

http://rjcracing.com/product/power-plates70mm-tbplenums/power-plate-faqs/


Dyno and track testing.

http://rjcracing.com/product/power-plates70mm-tbplenums/dyno-tests/

 

[earlbrown]

If you're really worried about small holes causing a restriction, look inside the intercooler core!!!!


Those little bitty flues HAVE to be a MAJOR cork!!!!!


(that was sarcasm, BTW )

 

[earlbrown]

Now I want to measure the flow area of a PP as compared to a bored out throttlebody.....

 

[1986 Buick GX1]

This is RJC's FAQ link.

http://rjcracing.com/product/power-plates70mm-tbplenums/power-plate-faqs/

Says it flows 3% less than 70mm tb and Precision plenum, well, the PP designed for that set up anyway.
Says still 120% more than stock set up.