Where are you folks getting extra muffler gaskets for the TT Pro 40? Sure wish they were made of brass or a material that holds up after several removals...

I don,t use one.Just bolt it on as is. Has not leaked for 10 years.

I don't use a gasket either! Never have. Metal to metal works fine.
Ugo

Jim you can also use this product. I have used it before and it works good, just go very sparingly and if you remove the muffler later you will need to scrape it off with a razor blade (no big deal).

Well...these are certainly readily available, cheap, and easy enough to make so they could be replaced at every muffler removal. Still, I'd love to have METAL GASKETS ala Nelson and Jett.

Question for you guys that don't use gaskets: Do you lap each mating surface on a dead flat board with 400/600 grit paper attached?

A group of guys I fly with, have been using the KS Aluminum Muffler gaskets available from Horizon.


http://www.horizonhobby.com/Search/D...Id=EPMA&Page=4

I had been using the Hi Temp silicone for many years with great results, but it is nice to be able to swap engines at the field, and not have to clean and wait for the silicone to dry.

Randy

No Jim I don,t use sand paper or anything to make it flat. Just bolt it on like i said. No leaks no runs no errors. [8D]

Bingo! Thanks Mike Tallman and Randy...

http://www.horizonhobby.com/Products...?ProdID=KSJ823

Budman - your stuff must fit better than mine does.

Lady luck does shine on me sometimes.

Use a very thin film of JB Weld for the ultimate seal. Just metal to metal with high rpm sometimes leaks exhaust residue so does Silicon after a while.

Never in my life have I ever used a gasket for a muffler in 30 years. OS, Supertiger, ASP, ThunderTiger all metal to metal. If you need a gasket theres something wrong. Maybe an overheated engine at one time that warped the muffler, but I kinda doubt it. Have you tried another muffler? Also I have never had one come loose or fall off, never! Just bolt it on with Loctite on the screws. Thats it nice and simple.

Good Luck

Experience with British cars and Harleys taught us that if it ain't leakin... it ain't runnin!

Jim,

Even if the seal isn't perfect between the exhaust stack and the muffler, the amount of pressure you'd lose isn't enough to matter. About the only benefit of the gasket is that it prevents the accumulation of unattractive black residue on the outside of the muffler.

The brass gasket that we use on the high-rpm Nelson and Jett engines is for another purpose, namely, to prevent heat and vibration from causing tiny spot welds ("galling," pardon the expression!) between the two aluminum faces. Other than that, I wouldn't bother. The TTs and STs both work fine without any sort of gasket.

OK, now I'm up to .04 ... when I hit .25, I'll tape a quarter to the wingtip!

Duane Gall
RCPRO

He's not kidding Jim. Here is a picture of his former Shotgun wing....after 38 times!

For any engine, if a gasket is required or if you just want one here is a very inexpensive method. If you drink coffee, go out into the kitchen and grab one of the filters . Cut out the shape required and get a tube of "Form a Gasket " from you auto supply store. Spread a VERY thin layer of the Form a Gasket on, let it tack up and put the muffler on. It has worked for me. Just a thought. Joe

This will bring closure to my question as to the source of aluminum or brass gaskets for the TT Pro 40 muffler. They fit PERFECTLY! Once again, here is a source:
http://www.horizonhobby.com/Products...?ProdID=KSJ823

FWIW - those gaskets made from a playing card work fine, but only for one use...they become so brittle from the heat they self destruct when you remove the muffler.

Thanks again to Mike Tallman and Randy!

Yes you have found the source for muffler gaskets but look at the cost $7 + shipping. Ten dollars is a little expensive. You can make your own for free if you have an exacto and an empty coke can.

I just use PERMATEX FORM A GASKET. I use it also on the two muffler halves and have not had a muffler (or back half) fall off since. If it did come off it was from high speed VS the ground!!