manifold gaskets

brumbee · Post by **brumbee** » Sun Jun 15, 2008 10:10 pm

been getting backfiring from my ea81 brumby, tried replacing the manifold gaskets but they gave me the wrong size. so reassembled but now its ticking, so have to get new gaskets in.
are there any secrets or tips on getting a good clean seal?
also one of my threads is almost stripped inside the engine, is there any other option than tapping?

options, tips.
ps. small budget

steptoe · Post by **steptoe** » Sun Jun 15, 2008 11:07 pm

you mean to say INLET manifold gaskets don't you ? Use a gasket scraper to remove all old gasket and if it is inlet use the loctite aviation gasket goo form-a-gasket brown liquid sealer

the thread inside engine...do you mean spark plug thread? there is such a tool called a thread chaser that can be run through to clean up the thread to avoid a rethread

Matatak · Post by **Matatak** » Sun Jun 15, 2008 11:20 pm

Lol i was thinking EXhaust actually steptoe.

you can just use a goo called Maniseal on ur exhaust gaskets and it will seal them properly, dont need to much of it.

stripped thread is also pretty common. but if it stripis completely then ud have to either Helicoil or retap larger.

AndrewT · Post by **AndrewT** » Mon Jun 16, 2008 12:54 am

Not sure about the EA81 but on the EA82 you have the option of cutting the flange off, rotating it 180degrees and re-welding it. Then you can tap in two completely fresh threads into the engine head in opposite positions to the flogged out ones.

littlewhiteute · Post by **littlewhiteute** » Mon Jun 16, 2008 6:33 am

AndrewT wrote:Not sure about the EA81 but on the EA82 you have the option of cutting the flange off, rotating it 180degrees and re-welding it. Then you can tap in two completely fresh threads into the engine head in opposite positions to the flogged out ones.

Yes, you can do that on a EA81 as well, but you rotate 90 degrees.

AndrewT · Post by **AndrewT** » Mon Jun 16, 2008 1:40 pm

haha yes, my mistake there :P

Matatak · Post by **Matatak** » Mon Jun 16, 2008 6:45 pm

cant do it on Dual port EA81's though

(like my old EA)

steptoe · Post by **steptoe** » Tue Jun 17, 2008 10:26 pm

UNLESS someone has already used this clever fix and left no choice....

silicone is also good for exhaust but use sensor safe in case of efi /O2 sensors