Do you spray your gaskets before putting them on?

[Pushit2.0]

Yes that is so the oil galley to the front BS could be drilled, you can put the plugs back in or drill them out for a bigger AN plug.

~John

[1ViciousGSX]

Access points to allow Mitsu to drill into the inner oil gallery for the balance shafts.

[Onefast99gsx]

Since this pertains to gaskets, I'll just use this thread...

What do you engine builder guys recommend for gasket sealer for the rear main thing (pic attached)?

Do you normally use grey or black RTV?

I have a big chauk type tube of black engine RTV that I picked up to do the oil pan for when I put it on. Just wondering if it makes a difference on the rear main bracket thing.

Thanks.

[Pushit2.0]

The rear main seal housing should have a gasket, and a little copper spray would not hurt. I use Black RTV for all oil needs and grey for coolent.

~John

[JET]

Yeah, shouldn't need any silicone in there, just the gasket. I am a big fan of Ultra Black for most everything.

[Onefast99gsx]

dam.. I ordered the full engine gasket kit from Brookdale Mitsubishi. I looked through everything last night and didn't come across a gasket for the rear main housing thing. I did some more reading up last night and I guess I'm wondering if the 6 bolts are the only ones that use a regular paper gasket for the rear main housing and the 7 bolts used RTV. Went to extremepsi also and they only show a gasket for that for 90-94.

Can you or anyone clearly confirm that the 7 bolts do indeed use a paper gasket? Come to think of it, I don't remember scraping paper gasket material off it but that was several months ago. I don't remember.

Thanks guys!

[Goat Blower]

Just put a real light coat of black RTV on there and call it done.

[Onefast99gsx]

Thanks Steve. Will do.

[Pushit2.0]

Mitsu service manual says for oil pan and rear main seal housing on 96+ 4g63 use Mitsu part#MD970389 or equal, so black RTV will be good. I should have looked it up in the first place.

~John

[Onefast99gsx]

Thanks John. You guys sure have been helpful during this rebuild. Once I get everything sealed up with the oil pan, I'll be on common ground. I just want to be extremely careful on the bottom end since I've never did a DSM bottom end before.