4age 16 valve exhaust gasket?

[Richardanka]

Hey guys,

Noob to the forum and very novice with regards the 4age but recently picked up a celica ta22 with 4age swapped in.

Runs pretty good but was just tinkering with tps and ignition timing and noticed the exhaust manifold is blowing on the left side, took it off and the gasket is shredded.

I cant even tell the original shape and it looks home made, just wondering if all 16v gaskets are the same as i can find two different shapes online? Also has anyone had experience with oem vs 3rd party?

Attatched a pic of my bay if anyone could help identify which type of 4age i have (im pretty sure its 16v big port), please excuse the piss bag lol, bit of a bodge from prev owner.

Here are a two options im not sure what to go for.
http://pages.ebay.com/link/?nav=item.view&id=131628200996&alt=web

http://pages.ebay.com/link/?nav=item.view&id=361414964363&alt=web

Any help is appreciated!

Cheers
Rich

[jondee86]

Welcome to club4AG Rich

Your engine looks to be a bigport going by the RWD TVIS manifold. All the 16V
exhaust gaskets are the same, but the second one that you linked has had the
two end holes elongated so that the gasket can also be used on the 20V version.
The outer two bolts on the 20V have different spacing from the 16V, otherwise
the 20V gasket is the same as the 16V gasket.

Toyota OEM quality is very good, but Toyota prices can be a bit over the top.
Any half decent aftermarket gasket should do the job. Just check the manifold
bolts are still tight after a couple of heat cycles.

Cheers... jondee86

[oldeskewltoy]

the first one is OEM, the exhaust outlets measure 33mm. The second one is a "performance" gasket. As Jondee points out, the end bolt holes are dual pattern so they will fit the 2 bolt patterns used on 4AGE exhaust. The second one has larger exhaust outlets, they measure closer to 38mm.

[allencr]

Make SURE that the manifold is flat & smooth, same with the head.
Tighten it down in steps, using a pattern, inside to out or outside in.
DO not fully tighten it down on one end, working your way straight across to the other.

[Richardanka]

Thanks for the welcome and reply guys, ive ordered the toyota oem one as the engine is pretty much stock at the moment and ive heard some issues with cheaper alternatives.

Hopefully this will keep my engine bay cooler too!

Rich

Sent from my D5803 using Tapatalk

[sirdeuce]

was mentioned earlier, tighten from inside out, but at least get an idiot book, Haynes or Chilton at minimum, to get some of the proper info on such processes. The factory manual would be best. Get the proper tools as well, including a good torque wrench. A torque wrench is not just a tool, but your friend! It'll get the fasteners tight enough that the new gasket will blow out too early and let you know when you are tight enough so you don't strip the threads out of the aluminum head. After you replace the gasket, check the torque after about three heat cycles. when the engine and manifold heat up and cool down the expansion and contraction "chew" on the gasket making it thinner and effectively reduce the torque of the fasteners, allowing the gasket to blow out. Do that process about three or four times and then a periodic check. Pretty much goes for all fasteners. Good luck and have fun.