Headers

stanthedog · Post by **stanthedog** » Thu Jun 21, 2007 1:59 pm

Who makes a good header and heater box in 1.5" or 1-5/8" for t-3's. Mines a 73 with a 2074cc mill. I think the 1-3/8" might be a little restrictive to the 42x37 valves.

Air_Cooled_Nut · Post by **Air_Cooled_Nut** » Thu Jun 21, 2007 8:41 pm

No one. If anyone does, it's gonna be speeeeeeennnnnndy! If you find a source let us know. I'd like to have heat in my ride

stanthedog · Post by **stanthedog** » Fri Jun 22, 2007 9:14 am

So the t-1 boxes are different than the t-3? And if so, the only way would be to split the stock boxes and put a 1-1/2 or 5/8" J-tube in.

Air_Cooled_Nut · Post by **Air_Cooled_Nut** » Fri Jun 22, 2007 10:10 am

stanthedog wrote:So the t-1 boxes are different than the t-3? And if so, the only way would be to split the stock boxes and put a 1-1/2 or 5/8" J-tube in.

Correct, they are too short.

The fins in the stock boxes are actually part of the exhaust so it's not a simple exchange of exhaust tubes (even if it were the diameters would be different). Look in your Bentley shop manual of a cut-away view of the engine and you'll see what I mean:

stanthedog · Post by **stanthedog** » Fri Jun 22, 2007 11:36 am

I know about the fins inside, but i've talked to guys using the aftermarket heater boxes, there's no fins in them, just the pipe, and they work fine, plenty of heat. Maybe not as much as the stock ones.

stanthedog · Post by **stanthedog** » Fri Jun 22, 2007 11:41 am

ARE the stock size exhast tubes big enough for a 150hp 2074cc engine?

Air_Cooled_Nut · Post by **Air_Cooled_Nut** » Sat Jun 23, 2007 12:32 pm

stanthedog wrote:ARE the stock size exhast tubes big enough for a 150hp 2074cc engine?

Nope.