by Heywood-Yablowme » Mon Jan 18, 2010 8:04 pm
I am in the process putting on my Harrop supercharger and was looking over the throttle body. Hmm..here is a fitting that looks like it was sawed off...
Wonder where it goes....yup,right into the motor.
This open hole is allowing unmetered,unfiltered air into the motor all the time.Yes,all the time. This port is used to supply a vacume source to a car with an EVAP system,which our cars do not have.
Uncut throttle body evap tube..
However,when brammo chopped it off,they must not have realized that it is OPEN, directly to the intake,on the engine side of the throttle body,all the time.Not a good idea.
To seal it,you can use a #12 sheet metal screw (1/2" long) and a dab of rtv sealer,or if you don't want to disassemble the throttle body off the car,you could reach around the throttle body and dab a bit of rtv on the hole,working some in to the hole.There is no pressure here,only vacume,so it should hold fine.Don't run the car for 24hrs to let the rtv cure and it has to be room temperature or it won't cure properly(That's what the R-T in RTV stands for; room temperature vulcanizing)
I am using the screw method and a dab of rtv.
This open port will affect idle quality and anytime the throttle is closed,like deceleration,It is allowing in unfiltered,unmetered air,causing a lean condition.
Thanks again,brammo
All three of my cars have this brammo hack job.Chassis #39,103 and 121.
I am in the process putting on my Harrop supercharger and was looking over the throttle body. Hmm..here is a fitting that looks like it was sawed off...
[img]http://www.mazda-speed.com/albums/album88/throttle_body_003.jpg[/img]
Wonder where it goes....yup,right into the motor. >:(
[img]http://www.mazda-speed.com/albums/album88/throttle_body_005.jpg[/img]
This open hole is allowing unmetered,unfiltered air into the motor all the time.Yes,all the time. This port is used to supply a vacume source to a car with an EVAP system,which our cars do not have.
Uncut throttle body evap tube..
[img]http://www.mazda-speed.com/albums/album88/throttle_body_ecotec.jpg[/img]
However,when brammo chopped it off,they must not have realized that it is OPEN, directly to the intake,on the engine side of the throttle body,all the time.Not a good idea.
To seal it,you can use a #12 sheet metal screw (1/2" long) and a dab of rtv sealer,or if you don't want to disassemble the throttle body off the car,you could reach around the throttle body and dab a bit of rtv on the hole,working some in to the hole.There is no pressure here,only vacume,so it should hold fine.Don't run the car for 24hrs to let the rtv cure and it has to be room temperature or it won't cure properly(That's what the R-T in RTV stands for; room temperature vulcanizing)
I am using the screw method and a dab of rtv.
This open port will affect idle quality and anytime the throttle is closed,like deceleration,It is allowing in unfiltered,unmetered air,causing a lean condition. :H:
Thanks again,brammo :P
All three of my cars have this brammo hack job.Chassis #39,103 and 121.