Only because they are around and have worked fine for me, Bosal. Seems like five years is the beginning of crunchy someplace along the line, the internal surfaces as much as the external. Autopartswarehouse.com is a price reference, also for all the gaskets and hangers.
The average length chrome, push fit extensions get the tips close to the rear edge of a U.S. bumper. Never noticed sound without a shorter, longer comparison. I have noticed the trunk being open is a guaranteed stink pump.
Interesting essay on catalytic converters on bmpdesign.com. In short, run stock. Green, no legal bombs, and any performance gains with test pipes, super flow aftermarket alternatives may be equaled by losing ten pounds in the driver's seat.
Exhaust systems
I'm really interested in this.
Besides a million little things, I am pretty much down to doing new shocks and exhaust on my 78'.
I've disconnected the smog pump and it did give me a little more "oumff".
My exhaust is completely original and will need to be done.
I don't think I'll be changing the headers , so, the thermal reactors have to stay in although without the smog pump, I assume they are really taking up space.
Is that correct? I can only take them out if I put a different header on there???
Also, I don't have to worry about smog in my county, but, I am generally one that is aware of the environment.
My question to everyone is-
Should I just go original and put a new cat. in there? Is that the best way to go? Better for compression?
Or, would it best better to run with out one? Seems I would gain a nice amount of horse power with out it, like it was meant to run in the first place.
I don't see the car ever having to be smogged again as when/if I do sell it, it will be back home to it's original State of Wa. where 78' are under the smog line. I'm in a county in Oregon right now where it's not required.
I get confused by lousy mpg with smog, or much better with out. If I have to run more gas, isn't that worse over all? Or, is that cat. the way to go to burn everything?
And T., thanks for the heads up on it all.
Besides a million little things, I am pretty much down to doing new shocks and exhaust on my 78'.
I've disconnected the smog pump and it did give me a little more "oumff".
My exhaust is completely original and will need to be done.
I don't think I'll be changing the headers , so, the thermal reactors have to stay in although without the smog pump, I assume they are really taking up space.
Is that correct? I can only take them out if I put a different header on there???
Also, I don't have to worry about smog in my county, but, I am generally one that is aware of the environment.
My question to everyone is-
Should I just go original and put a new cat. in there? Is that the best way to go? Better for compression?
Or, would it best better to run with out one? Seems I would gain a nice amount of horse power with out it, like it was meant to run in the first place.
I don't see the car ever having to be smogged again as when/if I do sell it, it will be back home to it's original State of Wa. where 78' are under the smog line. I'm in a county in Oregon right now where it's not required.
I get confused by lousy mpg with smog, or much better with out. If I have to run more gas, isn't that worse over all? Or, is that cat. the way to go to burn everything?
And T., thanks for the heads up on it all.
The BMP design article pretty much convinced me to bite the $400 bullet (?) and replace the Catalytic converter. Haven't checked out quality and price of choices. My state has no inspections, but cats do what they do, there is a law, penalties, and probably effort involved in getting around it with a custom or test pipe.
Because of all the bad press on heat exchangers, head cracking, my first Five series was one model beyond the problems with a 528. You can Google search the topic here; what's involved in switching them out. Exhaust manifolds have got to be around, save they are not quick and easy to pull from an engine in car (for bolt access), and they are heavy to ship.
If you do wind up with used, be very careful fooling with the rear (cat) studs. Busting them off while trying to replace is not an option.
Because of all the bad press on heat exchangers, head cracking, my first Five series was one model beyond the problems with a 528. You can Google search the topic here; what's involved in switching them out. Exhaust manifolds have got to be around, save they are not quick and easy to pull from an engine in car (for bolt access), and they are heavy to ship.
If you do wind up with used, be very careful fooling with the rear (cat) studs. Busting them off while trying to replace is not an option.
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vanquisheder
- Posts: 1
- Joined: Tue Aug 10, 2010 3:40 am
I'm warned, thanks.T.Hanson wrote:...
If you do wind up with used, be very careful fooling with the rear exhaust systems (cat) studs. Busting them off while trying to replace is not an option.