MGB: Header Comparison

I am looking at Headers and know that I want one that is an LCB.

So is there a comparison that has been done by anyone between say, the Maniflow header and system, Peco header and system, and any others out there?

Been searching on the web via google but haven't found anything.

You PECO owners, how do you like your full system?

Any Maniflow full system owners out there?

Anyone own the new stainless system that Moss is selling with the 3 into 1 header?

Thanks all

Jay

Jay.....word of caution; my 80B had one of the aftermarket headers installed when I purchased along with a weber downdraft conversion. The header was the cheaper 3 into 1 style...do not know the manufacturer. I have been told that this arrangement and/or product (cheaper brand) is subject to cracking at the 3 into 1 joint. When I had an aftermarket cat installed many years ago to pass local emissions testing; sure enough the header cracked at this joint. I have since replaced with stock exhaust manifold with 2 into 1 downpipe and monza system from there back. Good performance and like the sound. Food for thought.

I have a Peco system intalled. It fits nice, and doesn't have a center muffler, so even with my car lowered an inch, there is no dragging the exhaust on speed bumps. It sounds great too. The only issue I have is the the paint came off the header right away. I am going to use a header wrap to fix this issue (It looks terrible). The next car I do will probably have the header coated. Some people don't like the red color of the entire exhaust system, you can simply paint it with a rattle can.

PS Some of the vendors sell a "more" complete kit than others. A complete kit should include all the clamps and a "thick" exhaust manifold gasket. The Peco looks better with a chrome tip. A BMW chrome tip fits perfectly (They would be a nice bonus if it was also included).

Gary,

the color I could deal with easy enough and yeah, orange? and a chrome tip is easy enough.

could you feel a difference though?

and,

how is the sound while cruising. My current excuse for a system has a droning rasp that is neato torpedo for about ten minutes till I am sick of it!

I am somewhat of the same mind. If the headers really don't do much I may just buy a monza system from the stock head pipes back and call it a day. Pretty reasonable on E-bay too.

Get the new Moss Tourist Trophy polished stainless steel system. It's a 2" system that comes with all gaskets and newer style couplers and rubber hangers. Looks and sounds great too! And I got a great deal through Chris Roop.
I went with the one that uses the stock manifolid.

Kevin,

great looking system! Those are about $400 right?

Moss list price.

459-075 $324.95 Stainless Steel Exhaust 1962-'74.5

459-085 $399.95 Stainless Steel Exhaust with Polished Header 1962-'74.5

Chris could save you 20% off that.


Compare to the old Walker system

I have a set of headers from Jet-Hot. They are in the garage waiting on a rebuilt engine but they will look good when there is something to attach them to.

Jay, I have the full Peco system on my GT. Sounds great, mileage improved and it feels as strong as my roadster (thats probably my imagination--that sound).

I am also looking to put a header on my B, ceramic coated heater (Jegs, Pace Setter 72C1044 - MG $242.99) to drop the under hood temperature. Has anyone used this one? The header helps to get the exhaust gas out faster, however if you don't do something to get more air in (carbs, filters, etc.) you would not see an increase in power. Both have to be done to get more power out of the engine. The coated header will help a little on keeping the carb cooler and the under hood temperature lower which should also add more power.

gsj28 Wrote:

jayrz Wrote:

My understanding is that the PECO header can release a couple more HP if the rest of the system flows well but the same gains can be made by matching and polishing the factory system. The biggest advantage to headers is lighter weight rather than effiency. A downside would be, again from talking to mechanics, headers tend to warp after a few years and need the mating surface refaced to prevent leaks.

The local MG specialist had a barrel full of headers he'd taken off customers cars to fix exhaust leaks. His recommendation for a daily driver was a factory exhaust manifold.