1G 2g exhaust manifold on 6 bolt head

[AWD-Tony]

Which exhaust gasket is used for 2g manifold on 6 bolt head? Research done and I’m certain it’s a 6 bolt head. 2.0 on side of head above triangular 3 bolt thermostat housing and drilled hole is on the left side above #1 exhaust port. The previous owner replaced the exhaust studs but they’re 3 different sizes ughhh. Think the gasket below is for 7 bolt. Bottom half is barely on the head from what it looks like.
Thanks!!

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[streetraceboi]

That gasket is fine

 

[AWD-Tony]

Thanks SRB!!

 

[streetraceboi]

My bad. Didn't see it sitting flush. it looked like it was sitting away from the head. Try flipping it around

 

[AWD-Tony]

It only goes on one way. There’s a difference in the 1 and 4 runners. One side is a few mm longer between respective runners. It’s not flush but close enough from what the pic shows.

 

[Bud92gsx]

I do not believe it matters, pretty sure the exhaust ports are same size.
I'm using a 2g manifold on a 6 bolt head.

 

[AWD-Tony]

Ok. Just wanted to make sure. Thanks Bud!!

 

[Bud92gsx]

Let me rephrase that. Unless your using the 1g auto manifold, I don't think it matters.

 

[AWD-Tony]

Do you know the difference between 2g auto and manual ex mani?

Never mind. Haha

FYI. The gasket is an exact match of exhaust manifold.

My bad. Didn't see it sitting flush. it looked like it was sitting away from the head. Try flipping it around

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[Bud92gsx]

2g exhaust manifolds are the same.
I tried quoting you but I failed .

 

[streetraceboi]

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Is that where its getting stuck at? And not allowing it to sit flush?

1g heads have smaller end studs. 2g head have larger. That's why. 1g have all same size all around, 2g have all the same but 2 studs the ends

 

[AWD-Tony]

It’s not in all the way in on that end. I can push it in all the way but there’s copper spray on it so I didn’t in case I had to use a different gasket.

 

[streetraceboi]

The 2G exhaust manifolds also use 10mm mani bolts on the outside runners, and 8mm on the inside, unlike the 1G which uses 8mm all around.

 

[AWD-Tony]

1g heads have smaller end studs. 2g head have larger. That's why. 1g have all same size all around, 2g have all the same but 2 studs the ends

Correct. Think the previous owner tapped the end bolts (plus one more). Maybe it fit better??? Don’t know if it was necessary.

The 2G exhaust manifolds also use 10mm mani bolts on the outside runners, and 8mm on the inside, unlike the 1G which uses 8mm all around.

3 14mm nuts, 1 11/16 nut and rest are 1/2 inch. Lmao

 

[streetraceboi]

3 14mm nuts, 1 11/16 nut and rest are 1/2 inch. Lmao

Id find him and slap him...

3 14mm nuts, 1 11/16 nut and rest are 1/2 inch. Lmao

M10 studs and M8 studs** NOT the nut size on my above comment

 

[AWD-Tony]

Haha. I know. Pretty sure they’re not the nuts for those studs except the 14

 

[pauleyman]

The 2G exhaust manifolds also use 10mm mani bolts on the outside runners, and 8mm on the inside, unlike the 1G which uses 8mm all around.

Not qyite. 1g 7 bolt use 10mm on the outside also.

 

[Archer Fabrications]

Doesnt matter 6bolt 7bolt 1g 2g all the manifolds bolt to each other and so do all the exhaust head flange gaskets... it’s not complicated . Gasket is the same for all 4g63 evos also. If your having issues your using a bad brand or lower quality gasket. All oem mitsu MLS exhaust gaskets fit all 4g63 heads.

 

[Vegas Smith]

The 2G exhaust manifolds also use 10mm mani bolts on the outside runners, and 8mm on the inside, unlike the 1G which uses 8mm all around.

That's not completely correct. I would use the terms 6 and 7 bolt because a 1g 7-bolt head has the large end studs just like a 2g 7 bolt.

 

[brian9397gsx]

Also the 2g exhaust ports are slightly larger not that it matters much. But like stated before the only difference is the studs used. Make sure that you use some thread sealant on the middle bottom stud on the head side as it goes into an oil return passage to avoid oil leaking out onto the manifold.

 

[Vegas Smith]

Also the 2g exhaust ports are slightly larger not that it matters much. But like stated before the only difference is the studs used. Make sure that you use some thread sealant on the middle bottom stud on the head side as it goes into an oil return passage to avoid oil leaking out onto the manifold.

Ahh, good idea my friend. I forgot about that stupid oil galley.

 

[streetraceboi]

Not qyite. 1g 7 bolt use 10mm on the outside also.

I just copied and pasted what I found in a quick search on here, since he claimed to not find anything l o l