Re: American exhaust headers

["Mark Price" <mprice@xxxxxxxxxx>]

I don't think the relationship to the car body will change much on the Gremlin/ Hornet body with the 91 up H.O. manifold. I know from Tom's last few emails that the  mounts appear to move the engine slightly forward an inch on the 72 up cars. I don't think the H.O. pipe is close enough to the crossmember at any point for this to be a problem. The only area that is tight or close is the relationship of the stock outlet angle to the bellhousing area.
Jeeps kept it in tight to the pan and angled back to allow a 45* or so bend pipe to come straight down and just inside of the front driveshaft. The cars allow this to work, But the angle could be better. It is in no way close to the floor or any other obstructions other than the bellhousing. Manual trans cars have the Z-bar in the same area and require a little creativity to get the front pipe to snake past everything. Even with my redesign I had to do an s-Bend. My mistake was using 2 1/2" pipe which makes it much more complicated to get a good fit. I'd not go with anything larger than 2 1/4" if I was doing it again.
  I have some pics of mine, Somewhere. I can't get fresh pics as it is just too tight to get the camera to show anything with detail. I think the pics are either on the old computer in my sons room or on a CD somewhere. I will try to look for them. It is hard to do stuff at home right now. The motherboard fried in my home Emachine and the replacement I bought was DOA and I'm waiting for it to get through the RMA process and be replaced. 
Mark Price
mpriceAtwestco.net
Morgantown, WV
69 AMC rambler, 4.0L, EFI, 5 speed 
65 Ambassador Conv, 327 AUTO, Basketcase
01 S-10 CREWCRAP 4X4



---------- Original Message ----------------------------------
From: farna@xxxxxxx
Reply-To: mail-From-mprice-westco.net@xxxxxxxxxxxx
Date:  Mon, 13 Jun 2005 10:06:59 -0400

>I'm not sure if it's worth anything or not. IIRC the center outlet early iron exhaust manifold is pretty high up on the engine. The outlet for the Jeep exhaust is about even with the oil pan rail (seam between the pan and block), so it is a bit lower. Might work just fine with some creative bending -- I think Mark Price is running a late Jeep 4.0L exhaust in his American and needed a sharp bend near the manifold to pipe connection. Might be a bit tighter in a Hornet/Gremlin. 
>
>On June 9, 2005 Tom Jennings wrote:
>
>> On Thu, 9 Jun 2005 farna@xxxxxxx wrote:
>> 
>> > It depends on the year of the header. Stock 87-90 Jeep exhaust will fit with no problems. 91+ exits further forward. There may be clearance issues around the crossmember and/or engine mount. Jeeps don't have a crossmember under the engine.
>> 
>> Not sure if this is worth anything, but on the 70 Hornet I've got
>> the center-output manifold; the down pipe is steeply angled, but
>> does clear OK. A more-rear exit would have made it more straight
>> down, cleaner looking.
>> 
>> Right about the level where the exhaust exits the manifold, the
>> floorpan kicks back, making for decent clearance, on
>> Hornet/Gremlin.
>
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