Those edelbrock shorty headers man.....

[Hippie Metal]

holy crap do they give you a run for your money when it comes to bolting up the Y-pipe...A new one at that from BJ's

[OneMoreJeepPlease]

Tell me about it. You can't use the heat riser cause the spring is the wrong way, but you have to cause its too short otherwise. Just wait till you try to change the starter. You can't you have to drop the y to get to the top bolt. It use to be a job that took 15min start to finish to an hour+ job.

all headers suck, but the gains for a hotrod type stuff are well worth it. i cant convince myself they are worth the hassle on the wag.

[Blake]

Originally Posted by jamesdart

all headers suck, but the gains for a hotrod type stuff are well worth it. i cant convince myself they are worth the hassle on the wag.

X2


oh - and they WILL leak - soon

[bigbadjeep]

eh, on the leaking soon, my thorleys have been on for 4 years and no leaks. Also with the starter issue no problems here.

[Blake]

Originally Posted by bigbadjeep

eh, on the leaking soon, my thorleys have been on for 4 years and no leaks.

You must be a really good welder and was able to weld them directly to the heads....

But seriously, I swore off headers years ago and then ended up with a set on my J10. Some local 'sucker' traded me the headers for a set of stock manifolds. I bet he thought he was getting a good deal.

BTW - I think the stock manifolds flow just as well as headers and have just as much power

I'd be interested to see what Ristow has to say about this...

[The Colonel]

Originally Posted by Blake

BTW - I think the stock manifolds flow just as well as headers and have just as much power

I'd be interested to see what Ristow has to say about this...

http://www.ifsja.org/forums/vb/showt...27#post1399227

if you have leaky header gaskets, check out remflex gaskets, they are awsome. im not sur eif they make amc gaskets but i think they will make any gasket to order.

[Blake]

Interesting - I somehow missed that thread.

So at 5k RPM's, they give you ~20 extra ponies. I think either of my FSJ's would blow up if I kept 'em at 5k for very long.

But to the original poster - good luck!

[serehill]

I'll run them no matter what opinions are. Folks can dis them all they want. If you like em run them. I've seen good ones & bad ones in stock manifolds & headers usually it's cheap headers that have the problems. I like the cool factor. Mine sound good & runs good. If you're going to run stock exhaust & mufflers there's no use running them. It's a packge. Throw a big intake & carb & no exhaust on one now that's a waste too. If it can't exhale it can't inhale. It's the total package that make them work. I do agree 2 barrel with smog controls & stock everything else Headers are a waste.

[Rich88]

Originally Posted by Blake

BTW - I think the stock manifolds flow just as well as headers and have just as much power

The principle of headers is that the exhaust pressure fronts from the respective exhaust ports travels out to the collector instead of immediately backing up and interfering with outflow from the other cylinders sharing the same manifold.

However, for this reason additional horsepower from headers really doesn't kick in until 3-5K rpm, as the time between pulses shortens. Below that, won't make much (if any) difference. So you'll only see a difference when downshifting to pass or screaming up a highway entrance....or charging up a long rise at highway speed. That ain't a bad thing if the cool factor is important to you (and MPG is not) or you're pulling a horse trailer, or running from zombies, etc.

[mark j]

I have the shorty's and no complaints here. No problems getting to the starter. Had custom Y-pipe made so no problems there either. No leaks as long as the bolts are properly torqued down.

[billyrb]

on all of the headers, you need to loosely bolt up everything, and THEN tighten a little at a time. If you install and tighten the headers first, then you'll have a fun time getting the y-pipe bolted up.

[serehill]

I just cut the y pipe & rewelded. Now everything fits perfect if it's in a bind it will cause issues. They never are plug & play. I would hate to have to unbolt everything when I wanted to replace a gasket or something.

[Logans Run]

I have these headers, but no Y pipe.
I may make one (or more likely and H pipe) someday.
I know the system works better with the back pressure that this kind of set up provides.
Both of my pipes come straight off the headers and go straight out the back, dumping down onto the street right at the rear wheel wells.

[interceptor]

Thorleys, installed years ago with the thick expensive gaskets, maybe remflex, i forget. Havent leaked ever and i have never re torqued them. I run cat delete with the bj's offroad muffler. Still plenty of back pressure for low end power.

[CutterN55]

I had a Y-pipe made when I deleted emissions and put headers on. Either way, I've tried all the tricks and my shorty headers are a pain in the arse.
I've gone through 3 or 4 sets of head to manifold gaskets (more if I'd change them out more often) and flange gaskets. I switched to a doughnut style flange setup and it worked better, but still leaked and eventually blew out.

I may try to put a little flexible pipe section in there at the end of the Y-pipe so there's a little more give in the pipe and less stress at the mounting surfaces. I've had nothing but hell though.

They sound awesome when there is new gaskets & cool factor is there, but sound like poo-poo when I'm wide open and have blown out my gaskets after a couple months. If I could do it again, I would rather have spent the money on a front locker.

I vote no for a wheelin truck. I'm leaving mine as is for now. when I figure out what I'm doing for a new power plant I'll figure it out then.

[Hippie Metal]

Thinking about getting the Doug thorley set up and matching y pipe