Installing AFM correctly
#1
Intermediate
Thread Starter
Installing AFM correctly
Good evening to all. I hope all are well. I know I have posted a few times here but I will list my specs again. I have an 81 928 U.S. model with an auto trans. I have done a lot of work thus far to get this baby on the road but I am having difficulty getting the AFM jammed back into the throttle body. Is there an easy trick/solution to this. Should I try and get it to seat right first, then connect the airbox? Is it better to mount the airbox to the AFM and then put the whole assembly in? Just want to make sure I am doing this correctly. I think this was one of the problems with the motor running crappy. Thanks in advance. Steve
#2
Rennlist Member
Join Date: Apr 2002
Location: Vineland, Ontario, Canada
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It is easiest to attach the AFM to the air box and then install that as a unit. Plug the cable in before you do the final positioning. With the round end of the AFM touching the big o-ring inside the air guide to the throttle the 2 bolts that hold the air box down should hold it the AFM in place.
#3
Three Wheelin'
Good evening to all. I hope all are well. I know I have posted a few times here but I will list my specs again. I have an 81 928 U.S. model with an auto trans. I have done a lot of work thus far to get this baby on the road but I am having difficulty getting the AFM jammed back into the throttle body. Is there an easy trick/solution to this. Should I try and get it to seat right first, then connect the airbox? Is it better to mount the airbox to the AFM and then put the whole assembly in? Just want to make sure I am doing this correctly. I think this was one of the problems with the motor running crappy. Thanks in advance. Steve
#4
Rennlist Member
Hi,
The AFM should definitely slide into the O-ring of the TB, and go in about 3/4" deep. New O-rings here are softer, but also haven't been crushed into a fit. Either way a little (non-silicone if you have a cat) synthetic grease or even wd40 should help. Also be careful with alignment.
Good luck,
Dave
The AFM should definitely slide into the O-ring of the TB, and go in about 3/4" deep. New O-rings here are softer, but also haven't been crushed into a fit. Either way a little (non-silicone if you have a cat) synthetic grease or even wd40 should help. Also be careful with alignment.
Good luck,
Dave
Last edited by j.kenzie@sbcglobal.net; 05-21-2019 at 08:33 AM.
#5
Nordschleife Master
Don't laugh too hard, but water based 'personal lube' works really well for this. Won't hurt the o-rings, won't hurt anything if it gets run through the motor, lubes it up very well.