exhaust manifold leak! - Toyota Nation Forum : Toyota Car and Truck Forums

rubeq · 10-04-2009, 07:27 PM

Found a crack in my manifold. It goes all around the left pipe. Just wondering if that's the reason why my car has no power. Alredy changed plugs,cap and rotor,oil changed and new tires. And my car still won't accelerate. I ordered some 4-2-1 SS headers and was wondering if ill see a boost in performace with the headers since I have the cracked manifold...

gold94corolla · 10-04-2009, 08:33 PM

yup, sounds like it should help.... my headers had a crack, but it didn't help to change mine. Good luck!

rubeq · 10-04-2009, 08:38 PM

Thanks! Can't wait to install them. Are they easy to install?

Zain · 10-06-2009, 01:05 PM

i have a crack in mine too
and engine is making more noise
i tought about ordering the aftermarket headers
but i cudnt find the 2 bolts oxygen sensor
m still working on it

gold94corolla · 10-08-2009, 07:15 PM

I had a time installing my exhaust... the bolts were all stuck together at the cat converter.... I had to replace 100% of the exhaust . Maybe check here:

http://www.cardomain.com/ride/801395/9#Exhaust

rubeq · 10-09-2009, 09:49 PM

thanks that helped alot! hopefully i wont have to replace the exhaust sooner than i thought. as i add something to the car i find more and more stuck/rusted bolts!!! its like my car sat in water. will update thursday when i install them! btw nice rolla!

trife96 · 10-10-2009, 11:25 AM

next time you might want to just post all your issues in one thread. The exhaust manifold may rob you of some of the power but the manifold alone is not the only problem. BTW, what is the mileage? Does it smoke any?

awildman · 10-10-2009, 11:25 AM

A crack in the exhaust manifold can/will cause loss of power at lower RPMs.

Apply good penetrating oil to the fasteners, and let it soak for 15 minutes or so before you attempt to break them loose. No guarantee, of course, but it does help. And good wrenches will help prevent rounding off the fastener heads.

rubeq · 10-10-2009, 12:32 PM

right now im at 150k miles. and no smoke

Rip The E Brake · 10-12-2009, 04:26 AM

awildman is correct.

FYI, you will probably end up cutting the CAT bolt up locations. The stock CAT for this car runs extremely hot, and rust/moisture will fuse the piping together.

Just be ready to have it welded back together.

Bitter · 10-12-2009, 07:14 AM

i ground the heads off the bolts and knocked the rest of the bolt right on through then just used new bolts.

gold94corolla · 10-12-2009, 11:23 AM

I think they mean your cat bolts will look like this LOL

This handy tool took care of that

Bitter · 10-12-2009, 06:38 PM

mine looked just like that, as i said...i ground the heads of the bolts off with an angle grinder then used a hammer and short punch to knock the rest of the bolt through. took about 5 minutes per side to do that.

Rip The E Brake · 10-12-2009, 09:55 PM

Mine look exactly like yours Gold. LOL.

rubeq · 10-16-2009, 09:32 PM

installed the headers. i can say theres a little more power. remember i had the leaky manifold.so any little power increase to me is worth it. im probably at stock power but dont notice haha!