I need help with Tri Mil Bobtail Header with Quiet Pack muffler!

[dennismcd707]

Hey guys, I feel pretty stupid, but also really frustrated. I can't seem to figure out the exhaust routing for my Tri Mil Bobtail Header with Quiet Pack muffler.

I placed the pipes where they look like they belong, and when I'm done, all of the pipes don't line up, and I don't know how the muffler ties in.

I'm hoping that somebody might have a clear photo that shows the set up, or maybe a diagram for each piece showing how it fits together.

I'm also curious, when I fit two pipes together, there are no clamps or anything. Won't the exhaust leak at these spots?

Thanks in advance for any helpful comments or tips. (or close up photos)

Here are a few shots of where I'm at. Help!

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1971 Super Beetle, 1776, dual Weber's, roller crank, big valve modified racing heads, close ratio trans, lowered suspension, 4 wheel disc brakes, car has over 368,000 actual miles. (RIP 1970 Beetle/Baja, 1986 GTI, 1999 Jetta, 2002 Jetta)

[stevemariott]

It looks like you need to swap the pipes going to the collector from the #1 and #3 cylinders, at least - they should go "up" to the collector, and your pic has them upside down / going "down" to the collector. That adjustment should get you headed in the right direction.

Pic from the gallery:

Use a little Permatex Ultra copper where the pipes fit together - be sure to let it dry for 24 hours before firing it up.
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1963 Manx copy
1968 Bus

[RailBoy]

True Tri-Mill's don't have a flange... RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[satterley_sr]

Dont bolt anything down until everything is assembled.
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DDC racing

[RailBoy]

Its in a Rail it looks like.. Try-Mill to bend to Extractor...

Ran one with my Street Rail and in the end had a 2110 that
could do 0-60 mph in under 4 seconds... RB
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[quote="smitty24"]"HELP, I ported my own heads and now have fire coming out my ass" .[/quote]

[evanfrucht]

Keep all mounting bolts screwed in but LOOSE as you get the slip in fittings lined up. Then once everything is installed and in place you tighten down the flanges fully.

Sometimes header get built and pass thru QC with slight flaws in the bends or more often the flanges are welded on slightly crooked... it really shouldn't be, but it does happen. Sometimes flange holes may need to be ovalled out slightly or even pipe bent a little... but I don't think it's that serious here.

Who made this thing? What brand?

My $250 AA header fit like a glove...
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1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder )

[dennismcd707]

[Dauz]

You can put the red permetex high temp rtv in the slip joints

[mikedjames]

Trim the heat riser pipe to get it to fit, it should pull out of the casting to allow adjusting it.

You may have to straighten the bend in the riser pipe at the casting end and re-bend it in order to cut enough off.

Dont try too hard, theres maybe a carburettor change coming in the near future when your progressive sucks.
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Ancient vehicles and vessels

1974 VW T2 : Devon Eurovette camper with 1641 DP T1 engine, Progressive carb, full flow oil cooler, EDIS crank timed ignition.
Engine 1: 40k miles (rocker shaft clip fell off), Engine 2: 30k miles (rebuild, dropped valve). Engine 3: a JK Preservation Parts "new" engine, aluminium case: 26k miles: new top end.
Gearbox rebuild 2021 by Bears.

1979 Westerly GK24 24 foot racer/cruiser yacht Forethought of Gosport.
1973 wooden Pacer sailing dinghy

[dennismcd707]

I have to get a new torch to heat this sucker up, mine stopped working. I've already trimmed it, now the bend has to be moved.

So, the progressive will suck, eh? I hope not.
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1971 Super Beetle, 1776, dual Weber's, roller crank, big valve modified racing heads, close ratio trans, lowered suspension, 4 wheel disc brakes, car has over 368,000 actual miles. (RIP 1970 Beetle/Baja, 1986 GTI, 1999 Jetta, 2002 Jetta)

[oprn]

John@aircooled seems to have a handle on making them run correctly. Some people seem to like them.

If I had one I would give it an honest try. Sounds like they can be a challenge.
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age)

[Rome]

[stevemariott]

Haha, you're welcome! Tri-Mil is good stuff. Good luck with the progressive.

[Paul Jr]

[runamoc]