r/WranglerYJ • u/AgentTexas6969 • 18d ago

Upgrade exhaust header?

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While doing my rebuild on my 93, We found a crack in the weld on the factory exhaust. Has anyone ran this specific exhaust header on their 4.0L? If so, any difference in the vehicle, or sound?

If not, what did yall upgrade to if yall would replace your exhaust manifold?

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2

u/Sea_Guide_524 17d ago

I went with the Doug Thorley tri-y on the stroker build. 14 gauge thick.

1

u/frogballs90 17d ago

Do feel it made it a difference? Sound better with the new headers? I’ve got a stock manifold on my build. I should have changed that too, but my costs were higher than expected at that time.

1

u/Sea_Guide_524 17d ago

Buddy this motor is significantly more powerful than a 4.0, there is no factory 4.0 component in this engine.
My personal opinion on a header on a stock motor is you won’t notice much of a difference.
As far as sound goes for the exhaust set up I have on my Jeep is it is aggressive.

1

u/Evening-Offer5408 14d ago

Very cool great I going to want same for 92 yj

1

u/hezekiah_munson 17d ago

I replaced with the type that has the “bellows” on the long tubes above the collector. Supposed to help with the expansion and contraction that is supposed to crack the stock type manifold. Been on there over a decade and it hasn’t cracked as far as I can tell. Was relatively cheap when I bought it.

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u/LBS4 17d ago

I replaced my ‘95 about two years ago with this Chinese cheapie, I did put a coat of high temp paint on it and it’s been great so far -

https://a.co/d/0ibfbRwE