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post #1 of (permalink) Old 02-01-2007, 07:11 AM Thread Starter
 
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Finally! Finished my dream exhaust

When I first swapped in my V8, I did shorty headers (free), and had a local shop do the exhaust. It was alright, but didn’t like headers, and the exhaust hung too low. So I decided to re-do it with my new welder.

I bought rams horn manifolds off Ebay, sandblasted them, and coated them with a brush-on cast-iron look high temp coating. The big reasons to do rams horns is lower underhood heat, better clearances, less bolt loosening, and it allows me to use an off the shelf Y pipe (Walker # 42087 about $45). That Y pipe uses 2 – 2” pipes. I cut the end off, and got some 3” exhaust pipe, and went to work cutting, bending, and welding it up. This is my first project with the welder (literally doing the project hours after I got the MIG welder set up). I did re-use some of the pieces from the old exhaust and the muffler, so my cost for re-doing this was low.

To make it work, I had to re-locate the brake proportioning valve so that I could run the pipe real close to the frame next to the oil filter (higher out of the way). The whole thing tucks above frame rail height.

Costs:
Rams horns: $50
High temp coating: free, I had it laying around (but $20 if you need to buy)
3” exhaust tube: $20 from a local shop – nice 14 gauge
Hangers: Included when I bought the pipe
Walker pipe: $45 shipped

So the total thing cost me just over $100, and lots of my time.

Now to get to work on the skidplate……

Here it is layed out on the floor. 4 total pieces, but 3 shown (the last section did not change).
<img src=http://i11.photobucket.com/albums/a157/pnut333/floorlayout.jpg>

Looking forward
<img src=http://i11.photobucket.com/albums/a157/pnut333/lookingfwd.jpg>

How the Y pipe goes around the oil pan.
<img src=http://i11.photobucket.com/albums/a157/pnut333/underoilpan.jpg>

Tight fit around oil filter (but not too close)
<img src=http://i11.photobucket.com/albums/a157/pnut333/oilfilter.jpg>

Rear looking
<img src=http://i11.photobucket.com/albums/a157/pnut333/lookingrear.jpg>

After the skid is on, I will be close to flat belly
<img src=http://i11.photobucket.com/albums/a157/pnut333/sideclearance.jpg>

Here is a view of one of the rams horns installed
<img src=http://i11.photobucket.com/albums/a157/pnut333/ramshorn.jpg>

The outlet. Didn't change since last summer (when I took this pic).
<img src=http://i11.photobucket.com/albums/a157/pnut333/outlet.jpg>
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post #2 of (permalink) Old 02-01-2007, 07:32 AM
 
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Re: Finally! Finished my dream exhaust

Looks good. I am real close to getting rid of my headers too and I have been looking at these exhaust manifolds. I have only seen them for $90. Do you have a link to where you got them, assuming they have more to sell.
Also, can you put up a picture of the passenger side manifold , I'd like to see how that fit in too.
Thanks.
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post #3 of (permalink) Old 02-01-2007, 07:45 AM Thread Starter
 
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Re: Finally! Finished my dream exhaust

No pass side pic, I'll take one tonight. Here are a few links to Ebay auctions. You want the used ones. The new versions have too long of a neck.

http://cgi.ebay.com/ebaymotors/58-59-60-...1QQcmdZViewItem

This one is great, pre-finished, studs, and The spacer already there!
http://cgi.ebay.com/ebaymotors/CHEVY-GM-...1QQcmdZViewItem

http://cgi.ebay.com/ebaymotors/58-59-60-...1QQcmdZViewItem

That's just a sample. I bought both mine in one auction. They were rough looking. You can get them from a salvage yard too cheap.
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post #4 of (permalink) Old 02-01-2007, 11:50 AM
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Re: Finally! Finished my dream exhaust

[ QUOTE ]
The big reasons to do rams horns is lower underhood heat, better clearances, less bolt loosening

[/ QUOTE ]


Amen to that. [img]/ubbthreads/images/graemlins/goodpost.gif[/img] [img]/ubbthreads/images/graemlins/thumbsup.gif[/img]


You've done a very nice job. I would recommend getting some exhaust wrap and wrapping around the oil pan to keep from cooking the oil. Examples are: http://www.heatshieldproducts.com/exhaust_wrap.php, http://www.designengineering.com/pro...asp?m=sc&cid=3, and http://www.thermotec.com/products/full/11001/11001.html


Here's a pic with wrap installed:



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post #5 of (permalink) Old 02-01-2007, 02:19 PM
 
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Re: Finally! Finished my dream exhaust

Thanks for the links and the info on the lengths, I did not know there was a diifference. I will be putting these on a 1979 350 in a 1988 Wrangler.
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post #6 of (permalink) Old 02-01-2007, 04:41 PM
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Re: Finally! Finished my dream exhaust

Matt....your garage is still too clean....though I did notice a rag on the floor...

Oh...and the exhaust does look good.....I'll try to resist the "I told you so" on the headers and brake prop valve....

In fact, I wish my jeep looked half as good as yours.....I think the one shot showing the ground clearance underneath says it all....
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post #7 of (permalink) Old 02-01-2007, 08:13 PM Thread Starter
 
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Re: Finally! Finished my dream exhaust

[ QUOTE ]
Matt....your garage is still too clean....though I did notice a rag on the floor...

Oh...and the exhaust does look good.....I'll try to resist the "I told you so" on the headers and brake prop valve....

In fact, I wish my jeep looked half as good as yours.....I think the one shot showing the ground clearance underneath says it all....

[/ QUOTE ]

This is the time of year (believe it or not), that the garage starts to get dirty. All the winter snow falls off of our cars in the (heated) garage and leaves a muddy slop (dries up on the weekend when we don't go out).

I have to vacuum up pounds of dirt a few times throughout the winter. In the spring, I take EVERYTHING out of the garage and do a full floor wash with soap and stuff.

So short story, it is more dirty than it looks right now. I just like to keep things organized and put away and clean as I go when doing a project.
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post #8 of (permalink) Old 02-03-2007, 06:39 AM
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Re: Finally! Finished my dream exhaust

[img]/ubbthreads/images/graemlins/tongue.gif[/img] That is a fine looking setup, Peanut. Not only do I like it, but I know from experience that your engine will like it too. I have owned a freight train load of Shivel-A Vie Ate engines, and have long since discovered that a Chevy wants a LARGE SINGLE exhaust, not doolz. Yep, I've done it both ways, and dual exhaust just wasn't as good. [img]/ubbthreads/images/graemlins/tongue.gif[/img] I agree with Tim that you need to WRAP the wye-pipe with heat tape, and maybe even the collector. A few years ago I was setting up a 3/4T GM with 350 V-8 to pull a heavy trailer over the Rockies. I knew that I would have to "punish" that 350 in order to make some of those "pulls", so I built the ultimate "dream" exhaust. Two-inch individual header pipes that collected into a two-in one-out Flowmaster with a three-inch tailpipe. In order to keep my feet from frying, I wrapped each header pipe clear to the Flowmaster. You cannot BELIEVE how good that system sounds when the exhaust noise is bouncing off a guard rail as you pull a grade in 3rd-under with the tach sitting on 3800. The only problem I have with that system is that by wrapping the header pipes, it just transferred the heat farther back and warmed up the bottom of the pickup bed. I need to have some kind of a shield above the Flowmaster. [img]/ubbthreads/images/graemlins/crazy.gif[/img]
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