7 bolt head on 6 bolt block... What needs to be done?

[superorange]

The head is from a 2g and I have 6bolt arps and block. What needs to be drilled/ done to the head to fit/ work on my setup? Please help. Thank you.

 

[AwD4g63TsI]

Go to RRE's website. They literally walk you through this process.

 

[BogusSVO]

Read this thread...

http://www.dsmtuners.com/forums/cyl...bolt-head-12mm-bolts-without-bigger-bore.html

 

[superorange]

Does anyone have the link to the page on rre's site? I can't find it and don't want any mistakes.

 

[BogusSVO]

What questions do you have?
Is it about the CAS rewire?
What has to be done to the head to bolt it down properly?
What therm housing/water pipe to use?

http://www.dsmtuners.com/forums/newbie-forum/341028-4g63t-head-oil-port-mod.html

http://www.dsmtuners.com/forums/cylinder-head-short-block/341885-oil-port-mod-2-4g63t.html

 

[007jimmy]

RRE's Eclipse Tech Tips and Magazine Articles

 

[superorange]

Thanks for the help basically I need to know anything I will need to change or buy to switch to 7 bolt head so far I have the head and manifold that is all. The head is at the machine shop getting resurfaced and going to be modded to fit the 6 bolt arps. What else will I need to buy or change. Thank you.

 

[richard33]

You forgot to mention this 7 bolt head will be going in a 1g so it already has a CAS. You need to bore the head studs out to 12mm, and get the right intake manifold.

Does the thermostat housing need to be a 7 bolt one?

 

[19Eclipse90]

You forgot to mention this 7 bolt head will be going in a 1g so it already has a CAS. You need to bore the head studs out to 12mm, and get the right intake manifold.

Does the thermostat housing need to be a 7 bolt one?

Since it is going in a 1G, it would be preferable to use a 1G thermostat housing.

 

[Timechg]

You forgot to mention this 7 bolt head will be going in a 1g so it already has a CAS. You need to bore the head studs out to 12mm, and get the right intake manifold.

Does the thermostat housing need to be a 7 bolt one?

He said he's putting a 2g 7 bolt head in. If it is the 95-96 then you don't have the 1g style CAS, the 97-99 have a CAS that is similar to the 1g style.

I have the same set up 2g 7 bolt head with 1g block and used the 2g thermostat housing and 2g water pipe (I have a 14b installed at the moment).

You can use the 1g thermostat housing and 1g pipe if you want, but you would also need the 1g lower radator hose.

 

[TexasTurbo]

You are going to have problems if you drill those holes out to only the size of the 6 bolt studs (12mm).

 

[gieri002]

Right, It is not 12mm you need the head drilled out to, rather 13mm or 1/2 inch, you have to have some clearance around the head bolt/stud.