was going to get my own AIH plug and drill and tape it myself for the boost, except i dont know the size and thread type to get. anyone know?

 

do you want to know the thread size of the AIH or the thread size of the boost fitting?
boost fitting is a 1/8'' NPT.

 

both need the AIH thread sixe first
thanks
Keith

 

boy i should have look at that before i posted it
that would be i need both but the thread size for the AIH first
thanks
Keith

 

i read somewhere that you can use a cummins 12v oil drain plug. try a napa or parts store. or blackclouddiesel.com sells the plug already tapped for a boost gauge.

 

I will call napa i looked at the pre made ones but i was being a cheap sob.
BTW i like your sig JOHN 3:16
Keith

 

i got mine from BCD shipped to me for 27.00 bucks.
but, you could just pull the stock AIH out and take it too hardware store and put a nut on it too see what size and then just get the correct bolt. but dont forget you will need a phenolic or rubber type flat washer

 

was thinking of that Big toque but i live an hour away form a hardware store but i could do it when i am taking a different car to town
Thanks
Keith

 

The plug you need is metric, 22mm.
You can get one at most parts stores for about $8.

 

thanks clux
do you know how long? the pic's look like about 3/4 of an inch
thanks
Keith

 

You're going to need 1" or 1 1/2" length.

 

thanks Clux

 

clux is there a thread type or al the 22mm plugs the same?
Thanks Keith

 

By the time you go thru all that, is it really worth it? 27 is not that bad when the base plug is $8 plus some change.

 

the cheapest i found it for was 49 bucks
yep at 27 i would not wast my time
where did you find it at that price
thanks
Keith