My engine has a NA block and has since been rebuilt with a MHG and had all the turbo goodies added, and my feed port was damaged about a year and a half ago when building the motor but has not leaked yet and heres the story.
Ok before i say anything i want everyone to understand this was a mistake that was made by my father who helps me alot on projects since im so busy with school. i failed to inform him of the thread pitch on the oil pressure sender port and it was a misunderstanding. the car has been fine for over a year and a half but with all im changeing on the car this winter I would love to fix the damage.
now what happened is my father was working on the tee fitting i had to put in the factory oil pressure sender port since this was a NA block to feed the turbo and the factory oil pressure gauge. he thought the threads were dirty so like all the other threads on the block he cleaned them with a tap. and as you can predict it was a 1/8 npt tap he used. now we were able to thread in a npt fitting and make it seal with teflon paste but obviously this is a ticking time bomb with major complications if it were to ever start leaking. now i can take the oil pressure at the remote filter mount to save some space in that area of the block, and would like to ditch the tee fitting and its possible leak. when i pull the motor to freshen it up do you think its reasonable to take the front covers off, take the oil rifle plug out of the front and drill and retap this hole to a 1/4 npt and then use the necessary fittings to get it back to the -4 that my turbo feed is. it would require greasing all the taps and the drill bit to catch as much debris as possible and then using vacuums and magnets to get the rest out since im not taking the block apart.
it seems like a risky procedure but this car gets raced 15-20 times a year at autocross and tracks and i cant afford for this to fail mid season. i was lucky it lasted all last season.
sorry for the long read if you want cliffs is it safe to drill and retap the oil pressure sender port with the motor out but the block not completly apart. are there any holes under this whole that the shavings can fall inbefore i can vacuum them out
Ok before i say anything i want everyone to understand this was a mistake that was made by my father who helps me alot on projects since im so busy with school. i failed to inform him of the thread pitch on the oil pressure sender port and it was a misunderstanding. the car has been fine for over a year and a half but with all im changeing on the car this winter I would love to fix the damage.
now what happened is my father was working on the tee fitting i had to put in the factory oil pressure sender port since this was a NA block to feed the turbo and the factory oil pressure gauge. he thought the threads were dirty so like all the other threads on the block he cleaned them with a tap. and as you can predict it was a 1/8 npt tap he used. now we were able to thread in a npt fitting and make it seal with teflon paste but obviously this is a ticking time bomb with major complications if it were to ever start leaking. now i can take the oil pressure at the remote filter mount to save some space in that area of the block, and would like to ditch the tee fitting and its possible leak. when i pull the motor to freshen it up do you think its reasonable to take the front covers off, take the oil rifle plug out of the front and drill and retap this hole to a 1/4 npt and then use the necessary fittings to get it back to the -4 that my turbo feed is. it would require greasing all the taps and the drill bit to catch as much debris as possible and then using vacuums and magnets to get the rest out since im not taking the block apart.
it seems like a risky procedure but this car gets raced 15-20 times a year at autocross and tracks and i cant afford for this to fail mid season. i was lucky it lasted all last season.
sorry for the long read if you want cliffs is it safe to drill and retap the oil pressure sender port with the motor out but the block not completly apart. are there any holes under this whole that the shavings can fall inbefore i can vacuum them out