Exhaust leak: 85z

[slippy4]

I have all the exhauset doughnuts in, right off of the jug, and the thing still leaks. i just got it running today, about 5 min ago after its been apart for 2 years. i dont get it, it leaked before i ripped it apart, and leaks now, all new gaskets..... thats one of the main reasons i took it apart becouse it made everything so dirty and oily. what could be wrong that makes it leak? there is only one spring that holds it on, right? Thanks

[MTS]

i have heard the exasuts on tri-zs can be a buggerm try some high temp silicon on it, always seems to work

[Derrick Adams]

Ultra copper silicone sealer. It will work great for quite awhile. Get it at any auto parts store. Make sure to clean everything real well first.

[slippy4]

alright, ill try some, thanks alot

[Wickedfinger]

Whats it leaking?. Fumes are one thing, but if its leaking oily soot - you have a rich engine condition and not a leaky exhaust donut.

[tri-shee]

On my 85 z i have a drag pipe on it and i used yamabond high temp exhaust silicone from the yamaha dealer , make sure you let it sit over night to dry before starting .

[CHAINSAW]

yea, you will have to cake it with silicon, and I suggest letting it sit for a good weekend to setup nice. Zs exhausts can be a pain in the butt. I wish they would have designed them like the 250Rs. Be sure to put the silicon on both the OD of the cylinder, and the ID of the pipe. That way when you put the pipe on, both sides will meet, and form a nice wall inside. Dont be afraid to use a whole tube, because all excess that drips down will get blown out after some riding.

[TimSr]

If you have a TriZ and the exhaust is NOT leaking, there is something wrong with it!!!

I use the orange hiTemp silicon too.

[Darius1502]

There is a metal ring that goes inside the pipe where it meets the jug. That helped mine alot.

[slippy4]

well, it leaks both fumes and oil (i know its rich because its not tuned yet) ill have to get some silicon and let it sit. Why didnt they design this better? thanks

[CHAINSAW]

why didnt they leave the powervalve in, why didnt they design the rear shock better, why didnt they do a lot of things.. lol

[Tri-Z Pilot]

If you have a TriZ and the exhaust is NOT leaking, there is something wrong with it!!!

I use the orange hiTemp silicon too.
Yeah both of my Z's are that way, the metal gaskets dont work for me, I have some copper silicone, it worked good for my stang, so should work as good on the Z.

[JLurch58]

My R did the same thing. I just put a butt load of high temp (red) on it about every 3 or 4 races, works great and remember a leaking exhast robs alot of power.

[Tri-Z Pilot]

My R did the same thing. I just put a butt load of high temp (red) on it about every 3 or 4 races, works great and remember a leaking exhast robs alot of power.
Really? When I start mine up with the choke, there is a lot of smoke that comes from the,head area, maybe that's why I have a lag on the bottom.

[JLurch58]

Really? When I start mine up with the choke, there is a lot of smoke that comes from the,head area, maybe that's why I have a lag on the bottom.

Thats what Dana (my engine builder) told me. He said that is the bigest mistake guys make. They put tons of $$$$ in their engines and don't bother to worry about all the back presure they lose with a leaking exhast flange. Like I said I reseal mine every 3 or 4 races or about once a month. try it you'll see what I mean.

[slippy4]

will this work? its just hi-temp slilicon...

[JLurch58]

yup....you will be amazed with the increase in HP.

[slippy4]

alright, thanks alot