7 bolt head??? or what?

[EisHERE]

I know that the head was ported and what not, but now I'm confused about the exhaust manifold area.. I took it off to do the broken mani studs (2) and I had ordered them for a 6bolt but look here, and I have a bigger bolt on each end. thankfully, the broken studs are on the outside of the head so I'm going to try and weld a nut on but what I need to know now is what is up with this?? Do I send back the arp ss mani studs for a six bolt and get ones for the 7 or what? :S sorry i'm lost right now.

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[BogusSVO]

Pics of the intake side woll tell more.

 

[EisHERE]

Pics of the intake side woll tell more.

Intake is still on... why would there be two bigger bolts on the sides? anything else you could use a picture of, I can get. just keep in mind it's still installed, only thing off right now is the manifold and turbo

 

[Diamond Star Werks]

What month of 92 is year car made? Pix head bolts, thermostat housing, intake ports, all will help better.

 

[finesse49ers]

A 7 bolt head will have bigger studs on the outsides on the lower section of studs like you have pictured.

To be exact the 4 studs on top use 12mm nuts and on the bottom 5 studs the 2 on the outside are 14mm and the 3 in the middle are also 12mm.

 

[EisHERE]

July 1991. PO says it's a six bolt. but why would the manifold studs be diff sized if it is in fact a 6 bolt head? basically, I would have to buy a manifold gasket for a 7 bolt, and mani studs for a 7 bolt?

 

[BogusSVO]

Its common to find a 7 bolt head on a 6 bolt short block.

That swap is getting done daily it seems.

post a pic of the therm housing.

 

[finesse49ers]

I have never worked on or owned a 6 bolt head, I would like to assume that both 6 and 7 bolts are designed the way I described in my previous post. I could see why it was done that way - to give greater support for the turbo kit. I'm sure someone with knowledge of 6 bolt heads will chime in to give confirmation.

 

[BogusSVO]

I could see someone doing that mod to a 6 bolt head.

The intake and the therm mounting are the 2 easiest ways to tell a 6 bolt from a 7 bolt.

http://www.dsmtuners.com/forums/dsm-build-journals/417422-4g63-head-build-ups-6-bolt-7-bolt.html

 

[Diamond Star Werks]

Is the front of your oil pan flat or is it curved?

 

[EisHERE]

pictures are here...

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[BogusSVO]

Is the front of your oil pan flat or is it curved?

MJ.. why dose that matter? He is not trying to figure what short block he has, but what head.

 

[Diamond Star Werks]

July 1991. PO says it's a six bolt. but why would the manifold studs be diff sized if it is in fact a 6 bolt head? basically, I would have to buy a manifold gasket for a 7 bolt, and mani studs for a 7 bolt?

July Makes it a late 92 model. Technically a 93. So it may all be 7 bolt.

 

[snowborder714]

Heads are referred to either 1g or 2g, not 6 bolt or 7 bolt. A head from a 1g 7 bolt block is still a 1g head.

That said, it looks like it's from a late 1g model based on the stud size and thermostat housing.

 

[BogusSVO]

I have never worked on or owned a 6 bolt head, I would like to assume that both 6 and 7 bolts are designed the way I described in my previous post. I could see why it was done that way - to give greater support for the turbo kit. I'm sure someone with knowledge of 6 bolt heads will chime in to give confirmation.

I just went and looked thu my pile of 4g heads. I will confirm some of the 1g, Large intake runner heads have tha large 10 mm exhaust studs in the outer corners.
Casting number of G6

OP That looks to be a 1g/6bolt therm housing.

You have the odd ball 6 bolt/1g head.

Keep the kit you have, change the 8mm studs out, leave the 10mm alone.
Throw the spare 8mm in your tool box for use at a later time.

 

[snowborder714]

Dale, so you're saying this head is from a '90-'92 6 bolt DSM?

My info on the studs came from here:
Early 1g set (all the same size)
Late 1g/2g set (different corner sizes)

 

[EisHERE]

PS, this isn't the original motor that was in the car. It was swapped for a different one. I will know what year he swapped it for shortly.

edit- was swapped for a 91. haha you guys are awesome. thanks for the help. I do need one of the bigger bolts though, only one remains. know the size?

 

[Diamond Star Werks]

MJ.. why dose that matter? He is not trying to figure what short block he has, but what head.

True sorry. Need to stop trying to drive and reply. Lol

 

[BogusSVO]

It is an odd duck that is for sure.

G6 casting

Large intake runners

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1g therm mounting

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10mm end studs on the exhaust

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NO front CAS mounting holes.

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Takes the 11mm head bolts
center 2 measured at the HG surface .470

Snow... that would make it late 1g
Damn screwball DSMs....

I have 2 of these heads, got to make sure to ream the head bolt holes.

 

[snowborder714]

Dale, all I want to know is if I was right about it being a late 1g head (which would've come mated to a 1g 7 bolt block)

 

[BogusSVO]

Dale, all I want to know is if I was right about it being a late 1g head (which would've come mated to a 1g 7 bolt block)

Yes!! YES!! YES!! You, The almighty Snowboarder were right!!

I had to take a few mins, I only have some where between 14-20 of these heads in my shop, counting the Hyundai clones too.

I have the habit of calling all the big intake runners 1g heads, and all small intake runners 2g

I keep forgetting about this bastard head that looks 1g but bolts down 2g

 

[snowborder714]

No need for name calling now

It was fairly easy to identify since that's what I've been messing with in my car. Such a pain sometimes. Any 1g 7 bolt setups should not have been made.

 

[BogusSVO]

No need for name calling now

It was fairly easy to identify since that's what I've been messing with in my car. Such a pain sometimes. Any 1g 7 bolt setups should not have been made.

I would have to agree..... Like I said, the 2 I have, when I get to finish machining them, they will be just run of the mill 1g heads, with the proper .500 head bolt holes i them!

 

[19Eclipse90]

Dale -- I know you said you were going to look into this at some point in time but not sure if you ever did. Very surprised Brian didn't remember (or failed to link, whichever the case may be) as well.
Eric's trick: http://www.dsmtuners.com/forums/newbie-forum/431917-2nd-gen-1st-gen-head.html#post152931766.

That would have immediately pointed to a 1G head. All 7-bolt heads had the two larger outer studs, so two and two together -- and assuming no one has been in there and changed anything -- it's clearly a 1G 7-bolt head.

Also for future reference:
http://www.dsmtuners.com/forums/newbie-forum/404339-how-distinguish-7-bolt-head-6-bolt-non-turbo-head-6-bolt-turbo-head.html

 

[BogusSVO]

I slammed forgot about that.

I now have put both those links in my "cheat" link list!