My 91 explorer exhaust

[Morgan07]

So a while back I bought my first car, my 1991 ford explorer 2 door, and it’s got 200,000km on it and I’ve been driving the heck out of it and I love it, however recently I’ve been having trouble with my catalytic converter flange on my Y pipe and cannot seem to find any way to find/buy a different Y pipe or a addapter flange. If any one can help that’d be awesome. Thanks

 

[dvdswan]

Welcome to the site. Is this for the 4.0L engine?

 

[Morgan07]

Welcome to the site. Is this for the 4.0L engine?

Thank you. Yes it’s a 4.0L.

 

[Josh P]

Seems like a good excuse for a set of headers.

 

[410Fortune]

Borla headers, if still available for the 4.0, do include a new y pipe

Pace setter and jba headers re use the factory y pipe

91 explorer only came with one engine lol

Have you considered having an exhaust shop just cut it out and replace it with pipe?

You can use the y pipe from any 90-94 4.0 explorer or ranger. The 93-94 trucks have two 02 sensors but you can just plug or ignore one of them

 

[Morgan07]

I’d like to do headers, however my budget at the moment is a little tight. Later down the road I plan on doing a full rebuild, with a cam and I think I’ll probably do headers at the same time. I’m just looking for a quick easy way to get the truck back on the road

 

[fordawin]

junkyards are goldmines for these old fords. might get lucky there.

 

[Morgan07]

junkyards are goldmines for these old fords. might get lucky there.

Might be worth checking the local junkyards, but I’m going to try and cut up and a 2 into 1 exhaust adapter. I’ll post some pictures when it’s done

 

[410Fortune]

I have made a 2-1 adapter on that same piece there a couple of times
You can shove two pipes inside that oval and weld them up then reduce it down to a single 2.5”’pipe or so
Any exhaust shop can do this
There is no aftermarket cat converter that will bolt up. You have to fabricate

 

[Morgan07]

I have started to build my new exhaust over the span of a couple of different pay periods, works been a little bit iffy lately but I’m making it work. I started out by cutting up a 3 inch y pipe and attaching it to the oval pipe. As I’m sure you can tell I’m not a great welder but it holds together and sounds okay, at the moment my whole exhaust consists of a 2 1/2 inch cherry bomb but I’m slowly building it together, I’m thinking about doing a side exit

 

[BrooklynBay]

Sometimes you could get a deal from Rock Auto, Amazon or EBay.

 

[410Fortune]

Nice looking adapter! I’ve made a few of those Myself

You gonna run 3” pipe back to the cherry bomb and then reduce down to 2.5”? 2.5 is a good size for a 4.0 any larger tail pipe and you lose low end torque

 

[Morgan07]

Nice looking adapter! I’ve made a few of those Myself

You gonna run 3” pipe back to the cherry bomb and then reduce down to 2.5”? 2.5 is a good size for a 4.0 any larger tail pipe and you lose low end torque

That’s the plan, I went and got a reducer to 2.5” and I put a length of pipe on it as well as the cherry bomb and it’s running great and sounding pretty good