exhaust doughnut

[Datsun R Fun]

 I have a 79 620 i need get exhaust donut, only thing guys at parts store had to offer me was the flat gasket that has 2 exhaust holes and 3 bolts.

 

 

so i am wondering if some one could tell me the specs for that doughnut as to what size i would need or the doorman part number for compatible doughnut ? the original one was no where to be found.

[bananahamuck]

There is no doughnut the exhaust pipe bulges at the end and fits snuggly into manifold.. I don`t have a picture of it

[kelowg]

I like getting exhaust hot and retighten them to make sure it seals good.

[datzenmike]

The two hole is for L16/18 and the only one so this is why they offer it. The L20B pipe extends about 3/16" or so up into the exhaust manifold above the flange. With use they seal very well. I wouldn't try to use a gasket it will only blow out.

[Datsun R Fun]

so are all l20b likely to have this setup? i ask cause the pick n pull has a 75 pretty sure it had l20b stamped on it. and exhaust system in decent shape.

 

has anyone seen the truck at lakewood pick n pull in last few weeks ?

[HRH]

The only reason you would have a traditional donut is if someone modified the exhaust.  In which case, just get an exhaust donut from a Chevy six cylinder, it will probably be about right.  There are only about 3 sizes of traditional donuts if someone has put one on your truck.

[Datsun R Fun]

appears to be the normal thing but my buddy the lets get it done now type, fucked it up.

 

so now i need get new exhaust down tube. lol

 live learn, what i learned, don't let your buddy do things till ya truly know he knows what he doing lol.