ksu-chewie

iTrader: (14)

I would like to use studs instead of bolts for my oil outlets to make gasket installation easier. Does anyone know the size to use? I am looking at page C-93 on the FSM but I don't see a part # to lookup to reference a stud and/or bolt size.

Thanks

tt7hvn

iTrader: (5)

are you talking about the oil pan? or are you talking about the turbo drain return lines that go to the block?

either way, those are normal m6x1.0 threads, I think. if you pull the studs out, you'll want to tap them anyways to clean them out before you install a bolt. experiment with different size taps, but I'm pretty sure it's m6x1.0.

ksu-chewie

iTrader: (14)

I'm referring to the two oil outlets on the block that return oil from the turbos. I don't have studs to pull so I don't have a reference to use.

tt7hvn

iTrader: (5)

are your studs bad or something? if they aren't why are you doing this?

it's not going to make gasket installation any easier. besides, once you install the gasket, you shouldn't have to replace it for a very long time.

ksu-chewie

iTrader: (14)

I don't have studs, that's the problem. I've been using bolts.
It should make installing the gasket a lot easier since the gaskets will just sit in place on the studs while I install the turbos, instead of having to pinch the gasket into place between the block and pipe once the turbos are in place.

tt7hvn

iTrader: (5)

ah, then just find some m6x1.0 bolts that are at least 12mm long.

ksu-chewie

iTrader: (14)

I guess by stud size I meant to ask overall length and length of each side of the spacer.

ksu-chewie

iTrader: (14)

Why would I use bolts if I'm already using bolts and want to get away from them? I don't think you're following me.

tt7hvn

iTrader: (5)

oh that right, you want studs, lol.

i'll have to measure my studs for you later. since my engine is out it'll be easy and i'll get back with you.

tt7hvn

iTrader: (5)

these might be a little too long but like I said, i'll measure for you later:

https://www.belmetric.com/s6x31-metr...n10&cPath=9_70

tt7hvn

iTrader: (5)

ok, so I measured my studs on my block and they stick out 15mm. So you want the stud to thread into the block at least 5-6mm. So, something at least 20mm long. With a 5mm middle shank length (no threads) and 10mm worth of threads exposed outside the block.

ksu-chewie

iTrader: (14)

Thanks, I ordered both of these from McMaster-Carr to try:
M6—Pitch: 1 mm
23.5 10.5 6.25 98867A250
27.5 14.5 6.25 98867A255