Going the X pipe route huh?....I might have missed it but were you using just straight duals before?

Brad
Odenville, AL

1955 Fairlane Victoria
1956 Ford F100 (Restoration Underway....slowly )
2006 F150 SuperCrew

Straight with 18" extentions.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

It'll be interesting to see the results. Especially with Ted's results on the dyno showing that some type of mid-pipe as close to the headers/manifolds as possible produces better results than straights.

Keep us updated! Good luck!

Brad
Odenville, AL

1955 Fairlane Victoria
1956 Ford F100 (Restoration Underway....slowly )
2006 F150 SuperCrew

The 18" extentions were on Ted's advice.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Tim,

       You will like the X pipe. I run one on my F code. Car runs the same ET'S and MPH with mufflers and the X pipe as it does with an old set of Hedmanns and 18" tubes. With the Headers I removed the entire exhaust system and left it in the garage, so the car was 75 (?) pounds lighter, and no faster than the muffled runs. Most of the benefits seem to be low to mid range, but there is some top end help as well. Maybe Ted has some idea why, I don't.

Frank/Rebop

Bristol, In ( by Elkhart) 

Off to El Mirage again tomorrow!  First meet since Bonneville.  Say a prayer and wish me luck!

 

bla bla bla

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

It would be interesting to see a computerized flow simulation of an X pipe. I will bet there is some kind of induction effect that has the flow from one engine leg pulling the exhaust from the other leg along with it. It might be that if the thing was truly designed using a good program the best solution might be a single pipe from the X to one big muffler or outlet, call it a Y pipe. A venturi down stream of the joint might make the effect stronger. Does the X pipe seem to be RPM dependent or does it add power across the RPM band?

Doug T

The Highlands, Louisville, Ky.

Got back from Elmo yesterday. Went out there looking to top 140, it's a little harder to do it there than at Bonneville where we ran 142, when my first pass was done I had a timing slip that read 141.707! Not a bad day for me.

Only thing different is the carb (quick fuel 750an) and an X-pipe.  If the X pipe helps low and mid range it sure helped it climb through the rpm. It felt real strong.




I'm happy!

bla blabla

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Wow Tim, 141.7 on dirt, that makes my pucker factor go up just thinking about it! Good job and glad to see you home safe and sound. By the way how about a update on the sedan.

Glen Henderson



Freedom is not Free

Letohatchee, AL

Not much to say about the Sedan as I've been busy with other things, but racing season is coming to a close and I will have some time to work on it soon.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias