thermostat housing stud or bolt length?

[garths311]

So I'm doing the z thermostat housing mod on my r16 and um wondering what size hardware I will need to mount the waterneck

[datzenmike]

Never heard of it, so why not explain and post a few pictures of what you're trying to do? Is this something that Roadster owners do?

[garths311]

Well on a 1600 roadster it has thermostat housing the commonly gets frozen on the block and is very difficult to remove . And my case is cracked so I'm going to put a z water neck and an inline filler so I don't have to change my radiator . I plan on cutting off the old part and I need to figure out the stud length . I was hoping someone else here had done this so I could take the guess work out

[ggzilla]

Get studs that are 1" longer than the housing.

[datzenmike]

Do you mean the thermostat cover, or water outlet??? The 240/260/280z used two bolt but the 280zx used three bolt and so did the '81 Maxima gas engine. The # is 11060-P6500. The '79 S10, A10, 620 and '81 Maxima diesel also used a three bolt but different number.... maybe a different angle on the outlet? #11060-Y7010

 

[garths311]

[datzenmike]

Hmmm .... my picture of the R16 thermostat water outlet shows three bolt. Well if yours is two bolt, then almost any L series 4 or 6 cylinder cover will do.

[ggzilla]

But how long are the bolts???

[garths311]

Hmmm .... my picture of the R16 thermostat water outlet shows three bolt. Well if yours is two bolt, then almost any L series 4 or 6 cylinder cover will do.

it does but you don't have to use all three

[garths311]

maybe not that long

[ggzilla]

I would use bolts 10mm longer than the housing.

[datzenmike]

it does but you don't have to use all three

 

Not following how two bolts across from each other will line up with a three bolt holes in a triangle.

 

Are you drilling and tapping new holes? What about the two 3 bolt water outlets I mentioned?

 

....so I'm going to put a z water neck and an inline filler so I don't have to change my radiator

 

In line filter???

[garths311]

An inline filler neck for the radiator hose since the 1600 doesn't have one on the radiator itself . And I guess the bolt holes line up . I am going to try to extract the old studs out ( fingers crossed)

[datzenmike]

Filer, sorry.

 

Are you sure it's two bolt? Seems odd. Here's a thermostat housing on an old L head. You can see the bolt pattern for 3 bolts.

 

[garths311]

On the r16 the bolt holes are not an equalateral triangle I suppose

[garths311]

the bolt on the right closest to you doesn't go all the way thru

 

[datzenmike]

Makes sense now.

[garths311]

I'm glad I clear that up for you