Do I use a sealant?

[cruznude]

Okay so I want to start my 620 with a 32/36 and its all put together.  I read somewhere about gas leaking out from the adapter and gaskets.  Should I have used a gasket sealant when putting this all together and before I start up?

[MicroMachinery]

No. The only thing I've ever used is lubricant to help the surfaces mate up and keep from sticking to each other in case I need to pull the carb back off for any reason; most people just put them on dry, however. I've done this also in the past with good results.

 

Should NOT use sealant of any kind. It would eventually deteriorate due to exposure to the fuel anyway.

[cruznude]

Thanx Micro, thats what I had figured but you never know. Just don't want the probs today.  Thank You

[datzenmike]

I don't know of anything on a Datsun that uses a sealer. It would be used to 'seal' and most cases that's just what the gasket does. If the mating surfaces were badly knocked about I guess you could use sealant to help the gaskets. I would rub the adapter plates back and forth on a sheet of sand paper to 'true them up'. Once you use sealer parts like timing chain cover, water pump, thermostat housing and cover will be extremely hard to separate. Pretty much cemented on.

[EricJB]

Put a drop of locktite on all the lower plate hardware. Wavy washers on top. Clean and dry. 

[Eagle_Adam]

timing chain cover, water pump, thermostat housing and cover 

 

thats all i use sealer on in my L motors 

[MikeRL411]

thats all i use sealer on in my L motors 

 Permatex Aviation Form-a-gasket number 2, non setting, non hardening.  Great seal, easy seperation when you have to.

[MicroMachinery]

thats all i use sealer on in my L motors

 

Me too. As well as those 2 wiper looking seals in the rear main bearing cap(as per FSM instruction).

 

Some folks, however, come from the mystical, magical land of "everything is NOS" with perfectly machined mating surfaces that you can eat spaghetti off of. They never have to use sealant. The rest of us barbarians that live in the real world sometimes have to resort to such crude measures to keep our cobbled together abominable creations from bleeding vital fluids. Whatever works ;)

[EricJB]

Gasgacinch is good stuff as well.