ea81/ea82 y-pipe fitment

[mountaingoatgruff]

will a 92 loyales' y-pipe (ea82) bolt up to an 84 gl's ea81? i'd like to use maremont part number 29568 from partsamerica.com since there's one local and it's cheaper than the actual part for an 84 gl.

 

also, the hanger bracket by the rear flange should be in the right place for my 5 speed with this y-pipe, right?

[GeneralDisorder]

I have a factory 93 loyale y-pipe on my Brat as well as the EA82 from the same vehicle. I had to cut the heat sheild for the cat back on the passenger side to clear the radius rod plate on that side.

 

Also the runners to the heads will be longer as the EA82's don't have spacers under the heads. So you would have to remove any spacers you still have in place for it to fit properly. The transmission bracket might work *if* you remove the spacers.

 

Anyway - it wasn't a direct bolt in for me. It works though.

 

GD

[mountaingoatgruff]

so you removed the spacers and bolted the pipe flanges directly to the heads so that the pipe would have proper clearances further back? i wouldn't have thought to do that since my only experience with ea82's is limited to stripping parts off the tops, but it makes perfect sense. the y-pipe i'm going to use is a maremont aftermarket so i'll probably encounter other issues but i don't mind jacking with it if i know its doable. i was mainly after whether it would bolt up to the ea81 heads and tailpipe flange without having to bend the pipes in or anything, aren't ea82 heads taller or is that extra meat outside of the ports?

[GeneralDisorder]

I didn't have to remove any spacers since I'm currently using the whole EA82 in my Brat. The original engine is slowly being rebuilt.

 

GD

[TomRhere]

According to MilesFox, the EA-82 Y-pipe is a bolt-on replacement for the EA-81 Y-pipe, if the ASV spacers are removed. I haven't tried one, so can't confirm it.

 

As for your question about the head shape at the exhaust ports between the two, here's a pic. Here's link to thread the pic came from. http://www.ultimatesubaru.org/forum/showthread.php?t=82829

 

Ea-82 on left, EA-81 on right.

 

[The Beast I Drive]

Ive used the EA82 Y pipe on an EA81, it fits the engine directly but you have to take off those cast iron spacers.

[one eye]

I also heve an EA82 y pipe bolted to my EA81 motor in my 86 SJR Maroon wagon.

 

Jeff

[mountaingoatgruff]

i originally bought a maremont semi-universal replacement cat to weld into my existing y-pipe but the angles are a bit off on the inlets and since the aftermarket cat uses 2 1/8" inlets and the factory y-pipe is about 1 3/4" i was going to have to put a couple adapters in there and it just looked like a mess, the whole thing was quickly exceeding my welding skills & time constraints. also, i figure that if the cat uses 2 1/8" then the whole y-pipe from the same company would likely be bigger pipes than my factory one. i looked at the pictures at the parts store and i'd estimate the pipes on the maremont part are 2" after what looks like a stepdown from the 2 1/8" at the cat. it'll be here on tuesday so i'll know for sure then.

 

i need a muffler too and i know the bolts back there are rust siezed, maybe this will be the first step in a series of exhaust upgrades!

[McDave]

Could you post part numbers and prices when you get your Maremont stuff? THX

[mountaingoatgruff]

maremont 29568 ($254 @ partsamerica.com) beside factory ea81 y-pipe:

 

 

 

 

i know it doesn't look like it but the od's of the pipes are all the same (1.75"). the cat has bigger inlets/outlet and the bends are smoother. the outlet of the cat is 2" with a dumb stepdown to 1.75" - wouldn't be hard to make it 2" all the way.

 

i think eventually i'll put 2" pipe from this cat to my second cat, then since that cat has 2.25" in/out, i'll run 2.25" to a low restriction muffler and just put a turndown on that keeping it all short and straight ending just before the rear axle.

[McDave]

Thanks for the photos. I was wondering if I would be able to keep the pipe heat shields that are bolted on to my pipes. Obviously not since the bends are different. It does look like a quality part otherwise.