I've got a set of 12A Irons that I will be sending to PR soon to get lapped and streetported, and I'm cleaning them up. Is the oil filler neck a press fit? Should it be too much trouble to remove the water pump housing studs (since they probably have been in their since the motor was manufactured)? The metal tube that sticks out of the rear housing for coolant - is it a press fit?

 

I know that the coolant T that comes out of the rear housing is a pressed fit...

 

yes...the oil filler neck is just pressed in...we've pulled and replaced one b4...it was IoTuS'...somebody tried to make a t2 style one...looked like ****...we went back to stock for him...

 

the water pump studs aren't too bad to break loose, just use two nuts on there, one to hold still while the other one breaks the stud loose. Or you can do it the right way and get a stud remover.